Tropical Cyclones
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Monthly Global Tropical Cyclone Summary July 2006
[Summaries and Track Data] [Prepared by Gary Padgett]


                                 JULY, 2006

  (For general comments about the nature of these summaries, as well as
  information on how to download the tabular cyclone track files, see
  the Author's Note at the end of this summary.)


                              JULY HIGHLIGHTS

   --> Second Atlantic storm of season flirts with East Coast
   --> Eastern North Pacific active with two major hurricanes
   --> Western North Pacific active with all storms making landfall
   --> Very rare Bay of Bengal July tropical storm forms


             !!!!!!!!!!!!!!    EXTRA FEATURE    !!!!!!!!!!!!!!
                          ADDENDUM TO JUNE SUMMARY

                         East Coast LOW of 27 June

  A. Synoptic History

     The following is a brief synopsis of an interesting non-frontal LOW
  which formed off the U. S. East Coast in late June and made landfall
  in North Carolina.   It was my intention to include a write-up for this
  system in the June summary, but I inadvertently omitted it and someone
  called it to my attention.

     On 19 June the Tropical Weather Outlooks issued by TPC/NHC began to
  mention an area of showers and thunderstorms located over the Bahamas,
  Florida Straits and extending eastward over the Atlantic for several
  hundred miles.  This area persisted over the next several days, and
  on the afternoon of 21 June a concentrated area of showers and thunder-
  storms formed about 220 nm northeast of the northern Bahamas.  Upper-
  level winds, however, were unfavorable for tropical cyclone development.
  This disturbed weather, which resulted from the interaction of a surface
  trough and an upper-level LOW, continued in the area and by late on the
  22nd a broad surface circulation appeared to be forming.  By the next
  morning the circulation had become better organized and upper-level winds
  had become more favorable for further strengthening.  The 1130 AM EDT
  Tropical Weather Outlook noted that the possibility existed for a
  tropical or subtropical depression to form during the next day or so.

     The broad LOW drifted west-northwestward with little change in
  organization and had moved inland over the Florida Peninsula by the
  afternoon of 25 June.   By the morning of the 26th the broad LOW was
  moving northward and convective activity had become more concentrated
  over the northwestern Bahamas and off the eastern coast of Florida.
  Grand Bahama reported a sustained wind of 29 kts, gusting to 37 kts,
  and there were indications that a small low-pressure area might form
  off Florida's east coast and move northward over the Gulf Stream toward
  the Carolinas.  A Special Tropical Disturbance Statement (STDS) was
  issued at 0730 AM EDT on 27 June, noting that satellite and radar
  information indicated that the anticipated small LOW appeared to be
  forming about 120 nm south of Cape Fear, North Carolina, and was moving
  north-northeastward at 13-17 kts.

     A second STDS was issued around 1430 EDT and reported that an Air
  Force reconnaissance aircraft had investigated the system and found that
  the small LOW was located about 30 nm southwest of Cape Lookout, North
  Carolina.  A small area of tropical storm-force winds was occurring
  on its east side, but it was (at the time) determined that the system
  did not have a closed circulation.  During the afternoon the LOW moved
  inland near Morehead City and convection began to weaken and become
  less organized; however, winds to gale force were being felt over
  portions of the Outer Banks and adjacent waters.  The small LOW
  subsequently moved over southeastern Virginia and across Chesapeake
  Bay, where gale-force winds were reported.  The system continued to
  accelerate to the northeast, being located over southwestern New Jersey
  early on the 28th.  Around midday the LOW was located over southern New
  England, and by late afternoon had merged with a frontal zone and was
  moving over the Canadian Maritimes.

  B. Additional Discussion

     A question that has been raised is "Why wasn't this system named as
  a tropical storm?"   I have learned from NHC that they almost did start
  advisories on the system.   Prior to landfall, the reason that the system
  was not upgraded was that the reconnaissance aircraft did not find a
  closed surface circulation.     Central convection at the time was
  sufficient to warrant classification as a tropical cyclone, and as noted
  above, a small area of gale-force winds was present, but since no surface
  circulation was in evidence, the system did not meet that all important
  criterion of a tropical cyclone.

     After the system had made landfall, regular surface observations did
  indicate a closed circulation with some gale-force winds still present,
  at least for a brief time, but at that point convection was on the
  wane and it did not have sufficient organized deep convection to be a
  bona fide tropical cyclone.

     The word from NHC is that there is nothing further to be learned about
  this system and that it will not be added posthumously to the 2006 roster
  of tropical or subtropical storms.    However, in the author's humble
  opinion, the question should be raised, "Did the closed circulation then
  develop after landfall when deep convection was on the decrease?"
  Experience has shown that almost all tropical systems begin to weaken
  and lose organization immediately after moving inland.  However, there
  are some exceptions.  Tropical Storm Beryl of 1988 and Tropical Storm
  Bertha of 2002 both formed and intensified to tropical storm intensity
  with their respective centers inland over swampy southeastern Louisiana.
  Perhaps that happened in this case, although what seems more likely is
  that the circulation closed off just before landfall and after the
  reconnaissance plane had left the area, or else for some reason the
  reconnaissance crew was unable to detect the circulation.  However, this
  likely cannot be proven, so as things stand now, this system will be 
  given no further consideration as a possible after-the-fact tropical or
  or subtropical storm.  (Thanks to James Franklin of NHC for supplying 
  some of the above information regarding this system.)

  (Report written by Gary Padgett)

                            ACTIVITY BY BASINS

  ATLANTIC (ATL) - North Atlantic Ocean, Caribbean Sea, Gulf of Mexico

  Activity for July:  1 tropical storm

                          Sources of Information

     Most of the information presented below was obtained from the
  various tropical cyclone products issued by the Tropical Prediction
  Center/National Hurricane Center (TPC/NHC) in Miami, Florida:
  discussions, public advisories, forecast/advisories, tropical weather
  outlooks, special tropical disturbance statements, etc.    Some
  additional information may have been gleaned from the monthly
  summaries prepared by the hurricane specialists and available on
  TPC/NHC's website.     All references to sustained winds imply a
  1-minute averaging period unless otherwise noted.

                    Atlantic Tropical Activity for July

     Over the period 1950-2005, the Atlantic basin in July has produced
  the following averages:

          NS - 0.9                     NSD - 2.9 
          H  - 0.4                     HD  - 0.8
          IH - 0.1                     IHD - 0.1

  July of 2006 came close to the average with 1 NS which generated 2.8 NSD.
  However, no hurricane formed during the month.   This slightly less than
  average July followed on the heels of the most active month of July ever
  seen in the Atlantic basin.  During the previous July 5 NS developed with
  3 reaching hurricane intensity--2 of those became IHs with Emily becoming
  the first-ever recorded July Category 5 hurricane.    The July, 2005, 
  cyclones produced 25.5 NSD, 11.3 HD, and 6.3 IHD.    The situation was 
  reversed in the Eastern North Pacific where July of 2005 was extremely 
  quiet and July of 2006 was well above average.  A short report on this 
  year's Tropical Storm Beryl follows.

     Another system perhaps worthy of mentioning was an area of disturbed
  weather which formed over the southwestern Gulf of Mexico late in the
  month in association with a slow-moving tropical wave.  By the morning
  of the 24th a weak surface low pressure system was located just east of
  La Pesca, Mexico, and moving northward at less than 10 kts.  Showers and
  thunderstorm activity had increased over much of the western Gulf of
  Mexico and some NOAA buoys in the Bay of Campeche had recorded wind gusts
  of 35-45 kts during the morning.  Over the next day or so the LOW drifted
  northward along the Mexican coastline accompanied by thunderstorms and
  strong gusty winds in squalls, but upper-level conditions were not very
  favorable for tropical cyclone development.  By the 25th the system was
  inland over southern Texas, still moving northward, bringing locally
  heavy rainfall to portions of that state.  Upper-level winds had become
  somewhat more conducive to development, but the LOW continued moving
  further inland and weakened.

     Finally, at the end of the month a westward moving tropical wave
  approaching the Antilles became much better organized and advisories
  were initiated on Tropical Depression 03 at 0300 UTC on 1 August (during
  the evening of 31 July local time).     This system subsequently 
  strengthened into Tropical Storm Chris the next day.  The report on
  Chris will be included in the August summary.

                           TROPICAL STORM BERYL
                               18 - 23 July

     July's lone Atlantic tropical cyclone developed in a surface trough
  associated with a decaying stationary frontal zone off the Southeastern
  U. S. coast.  Two areas of low pressure developed along the front, one
  to the southeast of Cape Cod and the other south of the Cape Hatteras
  area.  The southernmost one began to show increased organization and
  advisories were initiated on Tropical Depression 02 at 1500 UTC on
  18 July, placing the center approximately 190 nm south-southeast of
  Cape Hatteras.  Shortly before 2045 UTC reconnaissance aircraft found
  a FLW of 46-47 kts in the southeastern quadrant along with a CP of
  1007 mb, so the depression was upgraded to Tropical Storm Beryl in
  a special update issued just after the regular 2100 UTC advisory
  package had been disseminated.

     Beryl moved slowly northward, passing about 100 nm east of Cape
  Hatteras on the 19th.  A reconnaissance aircraft around 19/2030 UTC
  found an 850-mb FLW of 57 kts in the southwestern quadrant with a
  surface pressure of 1002 mb.  Also, a dropsonde in the northwestern
  quadrant reported a surface wind of 49 kts.  Based on this data and
  the improving structure in radar and satellite imagery, Beryl's MSW
  was bumped up to its peak of 50 kts.  The cyclone at this time was
  located about 115 nm northeast of Cape Hatteras, moving north at 7 kts.
  A gradual turn to the north-northeast was forecast, and by the 20th
  Beryl was moving in this direction with an increasing northeasterly

     Weakening slightly on the 21st, Beryl passed over Nantucket Island
  where gusts to tropical storm force were reported.  The cyclone continued
  to accelerate northeastward and lost its tropical characteristics over
  western Nova Scotia late on 21 July.  The extratropical remnant continued
  to speed east-northeastward across northern Nova Scotia and Newfoundland
  and into the North Atlantic.  By 1800 UTC on 23 July it had weakened to
  a 25-kt LOW far to the east of Newfoundland.  The peak wind gust reported
  on Nantucket was 38 kts with the only damage being downed telephone poles 
  and fallen branches.  There were also some power outages reported in the
  Halifax area.

     The excellent online Wikipedia report, from which some of the above
  information was taken, may be accessed at the following URL:>

     The track of Beryl in tabular format may be found at the following

     Unfortunately, John Diebolt still has not gotten the problem with
  his database fixed, so the track graphic for Beryl is not yet available.
  When it becomes so, I will post the link in a future summary.

  (Report written by Gary Padgett)


  NORTHEAST PACIFIC (NEP) - North Pacific Ocean East of Longitude 180

  Activity for July:  2 tropical depressions **
                      1 tropical storm
                      1 hurricane
                      2 major hurricanes

  ** - systems became tropical storms in August

                          Sources of Information

     Most of the information presented below was obtained from the
  various tropical cyclone products issued by the Tropical Prediction
  Center/National Hurricane Center (TPC/NHC) in Miami, Florida (or the
  Central Pacific Hurricane Center (CPHC) in Honolulu, Hawaii, for
  locations west of longitude 140W):  discussions, public advisories,
  forecast/advisories, tropical weather outlooks, special tropical
  disturbance statements, etc.  Some additional information may have
  been gleaned from the monthly summaries prepared by the hurricane
  specialists and available on TPC/NHC's website.  All references to
  sustained winds imply a 1-minute averaging period unless otherwise

                 Northeast Pacific Tropical Activity for July

     Over the period 1971-2005, the Northeast Pacific basin in July has
  produced the following averages:

          NS - 3.7                     NSD - 15.6
          H  - 1.9                     HD  -  6.8
          IH - 1.1                     IHD -  2.1

  Following a very quiet July of 2005 when only 2 minor tropical storms
  developed, July of 2006 was well above average with 4 NS, 3 hurricanes
  and 2 major hurricanes.  These cyclones produced a combined 22.3 NSD,
  11.5 HD, and 4.5 IHD.  Hurricane Daniel was the first Category 4 or
  higher hurricane to form in July since Category 5 Hurricane Elida in
  July, 2002.  The three hurricanes all pursued tracks away from the
  Mexican mainland, but at the end of the month Tropical Storm Emilia
  moved northward and brushed the tip of Baja California.   Short
  reports on all the named systems follow.  Unfortunately, John Diebolt
  still is having problems with his database of track graphics so those
  are not yet available.  When the problem is corrected and the track
  graphics can be created, I will include the links in a future summary.

     The online Wikipedia reports for the Eastern Pacific cyclones may 
  be accessed at the following URL:>

     A tropical disturbance well to the southwest of Baja California began
  to show signs of increased organization late in the month and advisories
  were initiated on Tropical Depression 07E at 2100 UTC on 31 July.  At
  0300 UTC the depression was upgraded to Tropical Storm Fabio.  At the
  same time another disturbance was organizing to the south of Manzanillo
  and was classified as Tropical Depression 08E at 0300 UTC on 1 August,
  or late on 31 July local time.   This system was upgraded to Tropical
  Storm Gilma later on 1 August.  Reports on both Fabio and Gilma will be
  included in the August summary.

                              HURRICANE BUD
                               11 - 15 July

     Hurricane Bud developed from a tropical wave which had emerged off
  the coast of West Africa on 27 June.  The wave traveled across the
  Atlantic and Caribbean, reaching the Eastern Pacific by 7 July.  An area
  of low pressure formed along the wave on 9 July approximately 520 nm
  south of Manzanillo, Mexico.  Associated convection gradually became
  better organized and a tropical depression had formed by 0000 UTC on
  11 July about 600 nm south of Cabo San Lucas on the southern tip of
  the Baja California Peninsula.   TD-03E was upgraded to Tropical Storm
  Bud six hours later, but northerly shear initially hampered development
  of the cyclone.  The shear, however, diminished considerably on the 11th
  and Bud rapidly intensified and was upgraded to the season's first
  hurricane in a special advisory issued at 11/2230 UTC.

     Hurricane Bud continued moving west-northwestward as it steadily
  intensified on 12 July.  The cyclone reached its estimated peak
  intensity of 110 kts with an attendant CP of 953 mb at 0600 UTC
  on 13 July, at which time it was centered approximately 650 nm west-
  southwest of Cabo San Lucas.  After peaking in intensity Bud began to
  encounter cooler waters and stable air which led to steady weakening.
  The storm dropped below hurricane intensity early on 14 July, and by
  late in the day had lost most of its deep convection.  Bud was down-
  graded to a tropical depression at 15/0600 UTC, and the final advisory
  was issued at 2100 UTC that day, placing the weak remnant LOW about
  1350 nm west of Cabo San Lucas.

     The track of Hurricane Bud in tabular format may be accessed at the
  following URL:>

                            HURRICANE CARLOTTA
                               12 - 17 July

     Hurricane Carlotta operated more or less simultaneously with Hurricane
  Bud, following a very similar west-northwestward track but forming more
  to the east and tracking a little further north that did Bud.  The third
  named storm of the Eastern Pacific season formed from a tropical wave
  that entered the basin on 9 July.  Thunderstorm activity gradually became
  better organized over the next couple of days and a tropical depression
  formed early on 12 July about 285 nm south-southeast of Manzanillo,
  Mexico.  Moving west-northwestward, TD-04E quickly intensified into a
  tropical storm and was named Carlotta.  Carlotta continued to intensify,
  becoming a hurricane at 13/0600 UTC about 350 nm south of the southern
  tip of Baja California.   The first advisory upgrading Carlotta to
  hurricane status estimated the MSW at 75 kts--the peak for the cyclone's
  history.  The estimated minimum CP for Carlotta was 981 mb.

     Carlotta temporarily weakened back to tropical storm status at 1800
  UTC on the 14th as its circulation began to spread over cooler waters
  to the northwest of Socorro Island.   No sooner had the cyclone been
  downgraded than it began to make an unexpected comeback:  deep convection
  increased in both coverage and intensity near the center, and a cloud-
  filled eye developed.  Therefore, Carlotta was re-upgraded to hurricane
  status at 15/0000 UTC.  However, later that day a second and final
  weakening trend began as the storm moved over increasingly cooler SSTs.
  Carlotta was downgraded to a tropical storm at 15/1800 UTC, and the
  system had weakened to a tropical depression by 1200 UTC on 16 July while
  located about 565 nm west-southwest of Cabo San Lucas.  By early on the
  17th it had weakened into a non-convective remnant LOW.

     The track of Hurricane Carlotta in tabular format may be accessed at
  the following URL:>

                             HURRICANE DANIEL
                               17 - 26 July

     Peaking at 130 kts, major Hurricane Daniel was the strongest hurricane
  to traverse Eastern Pacific waters since Hurricane Javier in September,
  2004.  The precursor wave from which Daniel developed left the West
  Coast of Africa on 30 June, entering the Eastern North Pacific on
  12 July.  By 15 July the disturbance was showing signs of organization
  and a tropical depression had formed by 0000 UTC on 17 July about 630 nm
  south of Cabo San Lucas.   TD-05E continued moving westward in deep-layer
  easterly flow and became Tropical Storm Daniel later that day.   The
  cyclone was upgraded to hurricane status at 1800 UTC on the 18th while
  centered approximately 775 nm south-southwest of Cabo San Lucas.  Daniel
  turned west-northwestward on the 20th and became the season's second
  major hurricane at 20/0600 UTC as winds increased to 100 kts.  Peak
  intensity of 130 kts was reached at 0000 UTC on 22 July with the storm
  then located approximately 1050 nm west-southwest of the southern tip of
  Baja California.  The estimated minimum CP was 933 mb.

     The cyclone turned westward on the 22nd, then resumed a west-
  northwesterly motion the next day which brought it over cooler SSTs.
  Daniel's intensity gradually weakened over the next two days, and it
  crossed longitude 140W and entered the Central Pacific basin around
  1200 UTC on 24 July with the MSW estimated at 85 kts.  At this time
  warning responsibility was shifted to the CPHC in Honolulu.  As Daniel
  was moving over 25C waters, its intensity continued to decline and the
  cyclone was downgraded to a 55-kt tropical storm at 25/0600 UTC.
  Interestingly, at the time it was felt that since shear was light and
  the storm would reach 26C SSTs again in a couple of days, Daniel might
  very well approach the Big Island as a strong tropical storm.  However,
  the system ran into some cooler, drier air which really did a number on
  the convection.  By late on the 25th deep convection had all but
  vanished and Daniel was downgraded to a tropical depression at 26/0000
  UTC.  The residual depression continued to move slowly westward but
  showed no signs of re-intensification, so the final advisory was issued
  at 2100 UTC on 26 July, placing the center about 675 nm east-southeast
  of Hilo, Hawaii.

     The track of Hurricane Daniel in tabular format may be accessed at
  the following URL:>

                          TROPICAL STORM EMILIA
                               21 - 28 July

     The origins of July's fourth tropical cyclone are a little obscure.
  Based on the TPC/NHC monthly summary for July and the Tropical Weather
  Outlooks, there is no clear connection with a tropical wave from the
  Caribbean side of Central America.  The first mention of the pre-Emilia
  disturbance was in a Tropical Weather Outlook at 1700 UTC on 16 July.
  An area of disturbed weather was located about 385 nm south-southeast of
  Acapulco and was showing some signs of organization.  A small area of
  low pressure formed within the disturbance and drifted very slowly
  westward, then north-northwestward over the next several days.  All
  through this period the Tropical Weather Outlooks kept hinting that the
  system was on the verge of developing into a tropical depression, but
  that didn't happen until around 1200 UTC on 21 July when Tropical
  Depression 06E was first identified about 350 nm south of Acapulco.  The
  system slowly strengthened, becoming Tropical Storm Emilia at 0600 UTC
  on 22 July while centered about 350 nm south of Manzanillo.  Over the
  next several days Emilia followed a general northwesterly track but with
  some significant wobbles or zigzags.

     The cyclone strengthened, reaching an initial peak intensity of 60 kts
  on the 23rd while centered approximately 200 nm west-southwest of
  Manzanillo.  However, the next day the storm encountered unfavorable
  vertical shear and had weakened to 45 kts by the 25th.   As Emilia
  continued plodding northwestward, the inhibiting shear diminished
  significantly and Emilia quickly re-intensified, reaching an intensity
  of 60 kts (with an attendant CP of 989 mb) for the second time at
  26/0600 UTC.  The storm at this juncture was located about 125 nm west-
  northwest of Cabo San Lucas, and the storm subsequently brushed portions
  of the southern and western Baja California coastline, causing tropical
  storm conditions and locally heavy rainfall in many areas.  Late on the
  26th Emilia reached colder SSTs and began to weaken rapidly, becoming
  a tropical depression early on 27 July.  The system then turned west-
  ward and degenerated into a non-convective remnant low pressure area
  the next day about 250 nm west of Punta Eugenia.  The remnant LOW
  continued slowly westward while dissipating.

     No reports of damage or casualties resulting from Tropical Storm
  Emilia have been received.

     The track of Tropical Storm Emilia in tabular format may be accessed
  at the following URL:>

  (All Northeast Pacific basin reports written by Gary Padgett)


  NORTHWEST PACIFIC (NWP) - North Pacific Ocean West of Longitude 180

  Activity for July:  2 tropical depressions **
                      1 tropical storm ++
                      1 typhoon
                      1 super typhoon

  ** - one depression formed on final day of month and became typhoon in
       August / another was weak and classified as a tropical depression
       by JMA only

  ++ - classified as a typhoon by PAGASA

                          Sources of Information

     Most of the information presented below is based upon tropical
  cyclone warnings and significant tropical weather outlooks issued
  by the Joint Typhoon Warning Center of the U. S. Air Force and
  Navy (JTWC), located at Pearl Harbor, Hawaii.   In the companion
  tropical cyclone tracks file, I normally annotate track coordinates
  from some of the various Asian warning centers when their center
  positions differ from JTWC's by usually 40-50 nm or more.   All
  references to sustained winds imply a 1-minute averaging period
  unless otherwise noted.

     Michael V. Padua of Naga City in the Philippines, owner of the
  Typhoon 2000 website, normally sends me cyclone tracks based upon
  warnings issued by the Japanese Meteorological Agency (JMA) and the
  Philippines' Atmospheric, Geophysical & Astronomical Services
  Administration (PAGASA).  A very special thanks to Michael for the
  assistance he so reliably provides.
      In the title line for each storm I have referenced all the cyclone
  names/numbers I have available:   JTWC's depression number, the 
  JMA-assigned name (if any), JMA's tropical storm numeric designator,
  and PAGASA's name for systems forming in or passing through their
  area of warning responsibility.

                 Northwest Pacific Tropical Activity for July

     In contrast to the month of June, which was very quiet in the Western
  North Pacific with only one tropical storm, the month of July was quite
  active with one strong tropical storm, two typhoons, and one super
  typhoon.  In fact, Tropical Storm  Bilis/Florita was upgraded to typhoon
  status by PAGASA.  All the storms made landfall.  Former Super Typhoon
  Ewiniar made landfall in South Korea as a tropical storm, while Bilis,
  Kaemi and Prapiroon all made landfall in mainland China with Bilis and
  Kaemi striking the island of Taiwan also.  All three of the Chinese
  tropical cyclones were deadly with Bilis responsible for several hundred
  fatalities.  Reports follow on the named cyclones, all authored by Kevin

     In addition to the named storms, one additional system was treated as
  a relatively weak tropical depression by JMA, and also by the China
  Meteorological Administration.  This system formed in the northwestern
  South China Sea south of Hainan Dao on 3 July and moved northward,
  crossing the island and entering the Gulf of Tonkin, finally making
  a second landfall near the Chinese/Vietnamese border.  Also, the
  Guangdong Regional Meteorological Centre identified a weak tropical
  depression in the South China Sea on 21 July.  This system remained weak
  and had dissipated by the following day.  No tracks were included for
  these systems in the accompanying cyclone tracks file.  Some additional
  information on these two weak depressions may be found at the following

                            SUPER TYPHOON EWINIAR
                         (TC-04W / TY 0306 / ESTER)
                              29 June - 12 July 

  Ewiniar: contributed by the Federated States of Micronesia, is the name 
           of a Chuuk traditional storm god

  A. Introduction

     The fourth significant tropical cyclone of 2006 in the NW Pacific 
  basin, Ewiniar became the second super typhoon of the year, albeit for 
  only six hours.  Forming from a monsoon trough several hundred miles 
  southeast of the Philippine Islands, Ewiniar followed a long, north-
  oriented trajectory for over a week, finally making landfall over South 
  Korea on 10 July.

  B. Synoptic History

     As Tropical Storm Jelawat (TC-03W) was poised to move inland over 
  southern China on 28 June, an area of convection persisted approximately
  360 nm southeast of Yap.  It was first mentioned in JTWC's STWO at 1730 
  UTC 28 June.  The disturbance quickly developed, and at 29/0600 UTC, a 
  TCFA was issued.  The first warning followed at 29/1800 UTC, placing the
  newly-formed Tropical Depression 04W approximately 200 nm south of Yap.   
  TD-04W drifted slowly west-northwestward on 30 August and became a 
  tropical storm at 30/1800 UTC.  At the same time, JMA raised their 10-min 
  avg MSW to 35 kts and assigned the name Ewiniar.  Tropical Storm Ewiniar 
  rapidly strengthened late on 30 June, but the rate of intensification 
  slowed dramatically the next day.  The system remained a tropical storm 
  until 03/0000 UTC when it was finally upgraded to a typhoon while passing 
  280 nm south of Yap. 

     Typhoon Ewiniar steadily intensified while tracking northwestwards 
  along the southwestern periphery of a subtropical ridge, reaching its 
  maximum intensity of 130 kts at 0000 UTC 5 July while centred 
  approximately 530 nm south-southeast of Naha, Okinawa.  Ewiniar was a 
  super typhoon for a mere six hours before weakening began to set in on 
  5 July.  However, it remained a powerful major typhoon until 7 July when 
  the MSW fell below 100 kts.  In response to an amplifying mid-latitude 
  trough over eastern China, Typhoon Ewiniar turned northward, passing 
  through the southern Ryukyu Islands on 8 July.  After passing 100 nm 
  west of Naha, Okinawa, at 08/1800 UTC, the system was downgraded to a 
  tropical storm while moving northward through the East China Sea at 
  09/1200 UTC.  Accelerating northwards, Ewiniar made landfall on the 
  southwest coast of South Korea near Kunsan early on 10 July with an 
  estimated MSW of 35 kts.  After JTWC issued the final warning at 10/0600
  UTC, Ewiniar tracked across South Korea on 10 July, emerging into the 
  Sea of Japan later that same day.   JMA declared the system extratropical
  and issued the final bulletin at 11/0600 UTC. 

     JMA's peak 10-min avg MSW for Typhoon Ewiniar was 100 kts on 5 July 
  with an attendant estimated minimum CP of 920 mb.  The cyclone was known
  as Typhoon Ester in the Philippines, and PAGASA's peak estimated 
  intensity for the storm was 95 kts (10-min avg).

     The track of Super Typhoon Ewiniar/Ester in tabular format may be 
  accessed at the following URL:>

  C. Damage and Casualties

     Ewiniar brought strong winds and heavy rainfall to South Korea where 
  much damage was reported.  At least eight persons were killed or missing.  
  In China, at least 34 people perished due to floods and mudslides.  
  Typhoon Ewiniar also affected Yap, Palau, Okinawa, and North Korea.
  The above casualty information, along with a much more detailed 
  description on the impact of Super Typhoon Ewiniar, may be obtained at 
  the following link:>

  (Report written by Kevin Boyle)

                           TROPICAL STORM BILIS
                       (TC-05W / STS 0604 / FLORITA)
                                8 - 15 July

  Bilis: contributed by the Philippines, means speed or fleetness

  A. Introduction

     As Typhoon Ewiniar was racing northwards towards Korea on 5 July, 
  Tropical Storm Bilis was evolving from a large monsoon depression west 
  of Chuuk.  The storm slowly strengthened while following a west-northwest
  to northwest path across the Northwestern Pacific, finally making 
  landfall over mainland China, via Taiwan, early on 14 July.  Bilis 
  caused catastrophic loss of life in China and estimated damages of over 
  2.5 billion dollars.  

  B. Storm Origins

     The broad persistent area of convection that evolved into Tropical 
  Storm Bilis was first mentioned in JTWC�s STWO at 0600 UTC 5 July when 
  it was located approximately 290 nm west of Chuuk.   An upper-level 
  analysis indicated that the system was embedded in a low to moderate 
  wind shear environment with favourable outflow aloft.  Drifting slowly 
  west-northwestwards, the disturbance developed into a large monsoon 
  depression on 7 July.   A TCFA was issued at 07/1200 UTC, followed in 
  turn by the first warning at 08/0000 UTC, relocating the centre to a 
  position 180 nm southwest of Guam.  Tropical Depression 05W slowly 
  strengthened and was upgraded to a tropical storm at 09/1200 UTC.  The 
  tropical cyclone had been named Bilis when JMA  raised their MSW to 
  35-kts six hours earlier. 

  C. Synoptic History

     Tropical Storm Bilis remained a large system with monsoon depression 
  characteristics throughout its life.  The JTWC warning issued at 09/1200
  UTC noted a circulation measuring approximately 600 nm in diameter while
  an earlier QuikScat pass revealed the strongest winds between 30 nm and 
  90 nm from the centre.  Due to the hindering effects of moderate wind 
  shear and upper-level confluence to the north, Tropical Storm Bilis 
  strengthened slowly as it followed a west-northwestward track south of 
  a subtropical ridge, reaching a first peak intensity of 50 kts at 
  10/1800 UTC while located approximately 540 nm south-southeast of Naha, 
  Okinawa.  Bilis maintained a MSW of 40-45 kts for the next two days 
  while drifting northwestwards.  In time, the wind shear relaxed and the 
  convergence aloft to the north diminished, allowing Bilis to generate 
  deep convection near its centre with convective bands spiraling into the
  northern semicircle.  Tropical Storm Bilis reached its overall peak 
  strength of 55 kts at 13/0600 UTC and maintained this intensity while 
  crossing Taiwan on 13 July.   From there, Bilis made landfall near 
  Fuzhou, China, early on 14 July.  JTWC issued their last warning at 
  14/0900 UTC while JMA released their final bulletin at 15/0600 UTC.  The 
  remnants of Bilis persisted for several days as it slowly drifted 
  westwards over China. 

     PAGASA assigned the name Florita for this system and issued warnings 
  between 10/0000 UTC and 14/0000 UTC.  Florita was upgraded to a typhoon 
  at 12/0600 UTC until it was downgraded at 13/0000 UTC.   The highest 
  10-min avg MSW estimated by PAGASA was 65 kts whereas the highest 
  maximum intensity estimated by JMA was 60 kts (10-min avg).   Both these
  peak intensities imply a stronger system than was being carried by JTWC.
  JMA's minimum estimated CP was 970 mb.

     The track of Tropical Storm Bilis/Florita in tabular format may be
  accessed at the following URL:>

  D. Damage and Casualties

     Torrential rains from Tropical Storm Bilis had a devastating impact 
  on China.  Heavy flooding and mudslides caused estimated damages of over
  2.5 billion US dollars and the loss of over 600 lives. 

     Although Bilis did not attain typhoon intensity, its broad area of 
  high winds and heavy rains south of the centre affected the Philippines,
  causing the loss of 14 lives and 45 million pesos in damages. 

     Four deaths were reported from Taiwan.

     A huge wealth of information on the effects of Tropical Storm Bilis 
  can be accessed at:>

  (Report written by Kevin Boyle)

                               TYPHOON KAEMI
                       (TC-06W / TY 0506 / GLENDA)
                               17 - 26 July

  Kaemi: contributed by the Republic of Korea (South Korea) means ant.
         The ant often appears in Korean fairy tales as a symbol of

  A. Storm Origins

     Kaemi developed from a disturbance in the eastern part of the 
  monsoon trough and was first mentioned as an area of convection 
  consolidating around a LLCC in JTWC's STWO at 2200 UTC 16 July.  The 
  system was located approximately 625 nm east-southeast of Guam.  Upper-
  level analysis revealed a light shear environment with good polar 
  outflow aloft.  Moving west-northwestward, the system continued to 
  develop, prompting JTWC to issue a TCFA at 17/1430 UTC.  The first 
  warning on Tropical Depression 06W followed at 18/0000 UTC.  The 
  tropical cyclone intensified and was upgraded to a tropical storm at 
  18/1800 UTC, centred 165 nm south-southwest of Guam.  TC-06W was named 
  Kaemi after JMA raised their MSW to 35 kts at 19/0600 UTC.

  B. Synoptic History

     Tropical Storm Kaemi continued to intensify as it tracked generally 
  west-northwestward under the influence of a subtropical ridge to the 
  northeast and became a 70-kt typhoon at 1200 UTC 20 July approximately 
  300 nm north-northwest of Yap.  Despite moderate wind shear conditions, 
  Kaemi reached its peak intensity of 90 kts at 21/1800 UTC.  On 22 July 
  Typhoon Kaemi turned to a more northwesterly track as the western 
  extent of the steering ridge broke down.  The tropical cyclone slowly 
  began to weaken due to the persistent northeasterly wind shear which 
  displaced the CDO to the southwest of the LLCC.  After Kaemi weakened 
  to minimal typhoon intensity at 24/0000 UTC, the wind shear abated, and 
  the system re-strengthened back up to 75 kts before the system moved 
  across southern Taiwan on 24 July.  It was downgraded to a 50-kt 
  tropical storm at 25/0600 UTC prior to making landfall on the Chinese 
  mainland coast near Jinjiang, Fujian Province.  JTWC issued the final 
  warning at 25/1200 UTC.  JMA downgraded Kaemi to a tropical storm at 
  25/0000 UTC and issued their last bulletin at 25/0600 UTC. 

     PAGASA named this tropical cyclone Glenda after the tropical cyclone 
  entered their AOR at 21/0000 UTC.  The agency estimated a peak 
  intensity of 80 kts from 23/0600 UTC to 24/0600 UTC.   JMA estimated a 
  maximum intensity of 80 kts (10-min avg MSW) and a minimum CP of 955 

     The track of Typhoon Kaemi/Glenda in tabular format may be accessed
  at the following URL:>

  C. Damage and Casualties

     According to Wikipedia, Typhoon Kaemi killed at least 32 people in 
  China. There were no reports of casualties in Taiwan with only slight 
  damage reported. 

     The online Wikipedia report for Typhoon Kaemi may be found at the
  following link:>

  (Report written by Kevin Boyle)

                            TYPHOON PRAPIROON
                        (TC-07W / TY 0606 / HENRY)
                           28 July - 5 August

  Prapiroon: contributed by Thailand, is the Thai god of rain

  A. Introduction

     Typhoon Prapiroon was the last of a series of three tropical cyclones 
  to strike the Chinese mainland, following the disastrous impacts of 
  Typhoon Kaemi and Tropical Storm Bilis during mid-July.  Prapiroon 
  followed a west-northwesterly track, further south than the previous 
  two storms, crossing the northern Philippines on 31 July.  From there, 
  Prapiroon transited the South China Sea and moved into China on 3 August.

  B. Synoptic History

     Typhoon Prapiroon was first detected as an area of persistent 
  convection approximately 65 nm west-southwest of Yap, and was first 
  mentioned in JTWC's regular STWO at 0600 UTC 25 July.  Both multi-
  spectral satellite imagery and a 24/2216 UTC QuikScat pass revealed a 
  LLCC with persistent convection on the western periphery.  Upper-level 
  analysis indicated low to moderate wind shear with developing equatorward
  outflow.  The disturbance persisted for several days without significant
  development as it drifted west to west-northwestwards towards the 
  northern Philippines.   PAGASA named this system Henry after it entered 
  their AOR at 28/1200 UTC.   Finally, at 30/0230 UTC, a TCFA was issued 
  based on increasing deep convection over a better-defined LLCC.  The 
  first warning at 31/0000 UTC placed Tropical Depression 07W approximately
  115 nm east-northeast of Manila, Philippines.  Movement was towards the 
  west-northwest south of a subtropical ridge. 

     After crossing Luzon, Philippines, on 31 July, Tropical Depression 07W 
  was upgraded to a 40-kt tropical storm in the South China Sea at 01/0000 
  UTC.    It was named Prapiroon six hours later when JMA raised their 
  10-min avg MSW to 35 kts.  Prapiroon continued to intensify as it drifted 
  west-northwestward and became a minimal typhoon at 02/0600 UTC 
  approximately 205 nm south of Hong Kong, China.  Typhoon Prapiroon 
  reached its maximum intensity of 70 kts at 03/0000 UTC.  The abrupt 
  stair-step in the storm's track late on 2 August was caused by a deep 
  mid-latitude trough over China.  The system made landfall in the vicinity
  of Yangjiang, Guangdong Province, China, as a minimal typhoon at around 
  03/1200 UTC.   It was downgraded to a 45-kt tropical storm in JTWC's 
  final warning at 03/1800 UTC.  JMA maintained Prapiroon as a tropical 
  storm until 05/0000 UTC when that agency issued the final statement. 

     PAGASA issued advisories on Tropical Storm Henry from 28/1200 UTC 
  until 01/1200 UTC and estimated a peak intensity of 45 kts.  JMA 
  estimated a maximum intensity of 70 kts and a minimum CP of 965 mb.

     The track of Typhoon Prapiroon/Henry in tabular format may be accessed
  at the following URL:>

  C. Damage and Casualties

     Typhoon Prapiroon brought heavy rainfall and powerful winds to 
  southern China on 3 August.  News reports indicate that 77 people were 

     The Wikipedia report for Prapiroon may be accessed at the following 

  (Report written by Kevin Boyle)


  NORTH INDIAN OCEAN (NIO) - Bay of Bengal and Arabian Sea

  Activity for July:  1 tropical cyclone of gale intensity

                        Sources of Information

     Most of the information presented below is based upon tropical
  cyclone warnings and significant tropical weather outlooks issued
  by the Joint Typhoon Warning Center of the U. S. Air Force and
  Navy (JTWC), located at Pearl Harbor, Hawaii.   Occasionally some
  information may be gleaned from the daily tropical weather outlooks
  and other bulletins issued by the Indian Meteorological Department
  (IMD), which is the World Meteorological Organization's Regional
  Specialised Meteorological Centre (RSMC) for the basin.
     The reported maximum sustained winds (MSW) are based on a 1-minute
  averaging period, which is used by all U. S. civilian and military
  weather services for tropical cyclone warnings.     For synoptic
  observations in the North Indian Ocean region, both 10-minute and
  3-minute average winds are employed, but IMD makes no attempt to
  modify the Dvorak scale for estimating tropical cyclone intensity;
  hence, a 1-minute average MSW is implied.  In the North Indian Ocean
  basin JTWC usually does not initiate warnings until a system has
  become well-organized and likely to attain tropical storm status
  within 48 hours.

                              TROPICAL CYCLONE
                                 2 - 4 July

     Tropical Cyclone 03B was a very rare North Indian Ocean July tropical
  storm.  Since 1981, only one other tropical cyclone of gale intensity has
  formed in that basin (per JTWC's analysis)--that was in 1992.  No North
  Indian systems have reached hurricane intensity during the month.  By
  July the southwest monsoon has advanced northward and the ITCZ lies over
  land, sometimes retreating southward to the head of the Bay of Bengal.
  In their famous book _Atlantic Hurricanes_, Dunn and Miller write that
  occasionally during the summer tropical cyclones will form over the wet,
  monsoon-flooded plains of Bengal and have produced winds to 50 kts as
  they begin moving northwestward across northern India.

     An area of convection developed and persisted on 30 June approximately
  180 nm south of Calcutta.  The convection was southwest of a LLCC and was
  being enhanced by the convergence of strong southwesterly monsoonal
  winds.  However, an upper-level analysis indicated that vertical shear
  was high, so no imminent development was expected.  The system began to
  intensify somewhat rapidly late on 1 July and at 0300 UTC on the 2nd the
  IMD had classified it as a deep depression, implying 30-kt winds.  The
  center was located about 130 nm south-southeast of Calcutta and was
  forecast to move in a westerly direction.    The 0830 UTC satellite
  bulletin from AFWA assigned a Dvorak rating of T2.5/2.5, and the JTWC
  bulletin at 1130 UTC also rated the system at T2.5/2.5.

     As it strengthened the system drifted a little west-southwestward.
  JTWC issued their first warning on TC-03B at 02/1800 UTC, placing the
  center very near the Indian coast about 190 nm southwest of Calcutta,
  or just southeast of Cuttack.  A 02/1800 UTC surface observation at
  Bhubaneswar, India, reported a SLP of 982 mb.   However, according to
  the IMD, the center crossed the Orissa coast between Paradip and
  Chandbali around 1500 UTC.   The system quickly began to weaken as it
  moved farther inland and JTWC issued their second and final warning on
  TC-03B at 03/0600 UTC.  IMD continued to follow the system as depression
  through 1200 UTC on 4 July when it was well inland.

     The track of Tropical Cyclone 03B in tabular format may be accessed at
  the following URL:>

     No reports of damage or casualties resulting from Tropical Cyclone 03B
  are available.

     A short online report on this system may be accessed at the following

  (Report written by Gary Padgett)


  SOUTHWEST INDIAN OCEAN (SWI) - South Indian Ocean West of Longitude 90E

  Activity for July:  No tropical cyclones



  Activity for July:  No tropical cyclones



  Activity for July:  No tropical cyclones


  SOUTH PACIFIC (SPA) - South Pacific Ocean East of Longitude 160E

  Activity for July:  No tropical cyclones



     The purpose of this section is to list some websites where many and
  varied types of tropical cyclone information are archived.  Many readers
  will know about these already, but for the benefit of those who don't,
  I wanted to include them. 

  (1) Aircraft Reconnaissance Information

     Various types of messages from reconnaissance aircraft may be
  retrieved from the following FTP site:>

     Information regarding how to interpret the coded reconnaissance
  messages may be found at the following URL:>

  Links are also included to websites with further information about the
  U. S. Air Force 53rd Weather Reconnaissance Squadron and the NOAA Air-
  craft Operations Center.

  (2) Archived Advisories

     All the advisory products (public advisories, forecast/advisories,
  strike probabilities, discussions, various graphics) issued by TPC/NHC
  are archived on TPC's website.  For the current year (using 2004 as an
  example), the archived products can be found at:>

  Links to tropical products archives for earlier years are available at
  the following URL:>

  JTWC warnings for past storms are archived on the NRL Monterry website:>

  On the NRL site, the link to past years can be found in the upper left 
  corner of the screen.

     I am not aware at the moment of any other TCWC which archives all
  its tropical cyclone warning/advisory products for public access, but
  if I learn of any, I will add them to this list.

  (3) Satellite Imagery

     Satellite images of tropical cyclones in various sensor bands are
  available on the NRL Monterrey and University of Wisconsin websites,
  courtesy of Jeff Hawkins and Chris Velden and their associates.  The
  links are:>>

  On the NRL site, the link to past years can be found in the upper left 
  corner of the screen.  For the CIMSS site, a link to data archives is 
  located in the lower left portion of the screen.

     Additional tropical satellite imagery, along with looping ability for
  composite microwave imagery for the Western Hemisphere north of the
  equator, can be found at:

  (1) For the Eastern North Pacific:>

  (2) For the Atlantic, Gulf of Mexico and Caribbean Sea:>

     I'm sure there are other sites with available imagery available, and
  as I learn of them, I will add the links to this list.


                               EXTRA FEATURE

     In order to shorten the amount of typing in preparing the narrative
  material, I have been in the habit of freely using abbreviations and
  acronyms.   I have tried to define most of these with the first usage
  in a given summary, but I may have missed one now and then.  Most of
  these are probably understood by a majority of readers but perhaps a
  few aren't clear to some.  To remedy this I developed a Glossary of
  Abbreviations and Acronyms which I first included in the August, 1998
  summary.  I don't normally include the Glossary in most months in
  order to help keep them from being too long.  If anyone would like to
  receive a copy of the Glossary, please e-mail me and I'll be happy
  to send them a copy.


  AUTHOR'S NOTE:  This summary should be considered a very preliminary 
  overview of the tropical cyclones that occur in each month. The cyclone
  tracks (provided separately) will generally be based upon operational
  warnings issued by the various tropical cyclone warning centers.  The
  information contained therein may differ somewhat from the tracking and
  intensity information obtained from a "best-track" file which is based
  on a detailed post-seasonal analysis of all available data. Information
  on where to find official "best-track" files from the various warning
  centers will be passed along from time to time.

    The track files are not being sent via e-mail.  They can be retrieved
  from the archive sites listed below.  (Note: I do have a limited e-mail
  distribution list for the track files.    If anyone wishes to receive
  these via e-mail, please send me a message.)

    Both the summaries and the track files are standard text files
  created in DOS editor.  Download to disk and use a viewer such as
  Notepad or DOS editor to view the files.

     The first summary in this series covered the month of October,
  1997.   Back issues can be obtained from the following websites
  (courtesy of Michael Bath, Michael V. Padua, Michael Pitt, Chris
  Landsea, and John Diebolt):>>>>>

     Another website where much information about tropical cyclones may
  be found is the website for the UK Meteorological Office.  Their site
  contains a lot of statistical information about tropical cyclones
  globally on a monthly basis.  The URL is:>


     JTWC now has available on its website the Annual Tropical Cyclone
  Report (ATCR) for 2004 (2003-2004 season for the Southern Hemisphere).
  ATCRs for earlier years are available also.

     The URL is:>

     Also, TPC/NHC has available on its webpage nice "technicolor"
  tracking charts for the 2005 Atlantic and Eastern North Pacific
  tropical cyclones; also, storm reports for all the 2005 Atlantic
  and Eastern North Pacific cyclones are now available, as well as
  track charts and reports on storms from earlier years. 

     The URL is:>

     A special thanks to Michael Bath of McLeans Ridges, New South Wales,
  Australia, for assisting me with proofreading the summaries.


  Gary Padgett
  E-mail:  [email protected]
  Phone:  334-222-5327

  Kevin Boyle  (Eastern Atlantic, Western Northwest Pacific, South
                China Sea)
  E-mail:  [email protected]

  Simon Clarke  (Northeast Australia/Coral Sea, South Pacific)
  E-mail:  [email protected]


Document: summ0607.htm
Updated: 3rd October 2006

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