[Index]
Monthly Global Tropical Cyclone Tracks June 2009
[Summaries and Track Data] [Prepared by Gary Padgett]
| Tropical
Cyclones
[Index] |
Monthly Global Tropical Cyclone Tracks June 2009 [Summaries and Track Data] [Prepared by Gary Padgett] |
GLOBAL TROPICAL CYCLONE TRACKS - JUNE 2009
!!!! IMPORTANT -- PLEASE SEE NOTE AT END OF FILE !!!!
JUNE HIGHLIGHTS
---------------
--> Rather quiet month--three tropical storms in North Pacific
GLOBAL OVERVIEW
---------------
As was the case with May, no tropical cyclones nor significant
tropical LOWs formed in the Southern Hemisphere during June. The only
named storms formed in the North Pacific Ocean--two in the west and
one in the east. Typhoon Linfa formed just after mid-month in the
northern South China Sea and moved slowly northward, reaching a peak
intensity of 75 kts per JTWC's analysis. JMA's peak intensity for
Linfa was 60 kts (10-min avg)--just under typhoon strength. Linfa
weakened prior to making landfall in Fujian Province, China. According
to the Wikipedia report, Linfa left 7 persons dead with 12 missing,
plus caused several hundred million dollars damage in the Philippines,
Taiwan, and mainland China.
During the final week of the month, Tropical Storm Nangka/Feria
moved across the central Philippines and later made landfall in
southern Guangdong Province, China. Nangka/Feria remained a relatively
weak tropical storm throughout its life. JTWC's and JMA's peak MSW
estimates were 45 kts and 40 kts, respectively. The storm spawned a
rare tornado in the Philippines, where scattered damage and six deaths
were reported. There were also 11 persons reported missing.
In the Eastern North Pacific, Tropical Depression 01E formed on the
18th a few hundred miles to the south-southeast of Cabo San Lucas. The
depression moved northward toward the coast, prompting the issuance of
a tropical storm watch for portions of the Mexican mainland and a
tropical storm warning for some offshore islands. However, TD-01E
weakened and dissipated very near the coast without reaching tropical
storm intensity. A few days later Tropical Storm Andres formed about
175 nm south of Zihuatanejo, Mexico. Andres was the latest-forming
initial tropical storm in the Eastern Pacific basin since Tropical
Storm Ava formed on July 3, 1969. Andres moved northwestward near the
Mexican coastline and very briefly reached minimal hurricane intensity
late on 23 June as it brushed the coast. However, within 24 hours
after peaking in intensity, Andres had dissipated due to the effects
of cooler SSTs, drier air, and increased vertical shear.
During the latter week of June a tropical depression formed in the
eastern Arabian Sea and moved into the Gujarat region of India. The
system hovered in the coastal region, later moving back into the Arabian
Sea, but subsequently dissipated without attaining cyclonic storm
intensity. According to the Wikipedia report, nine persons died due
to strong lightning storms associated with the depression, and over
100 mm of rain fell in Gujarat prior to landfall.
In the North Atlantic basin, an interesting low-pressure area north
of the Azores was numbered as an invest area (92L), and the system was
referenced in TPC/NHC's Tropical Weather Outlooks. The LOW exhibited
a convective cloud pattern consistent with a subtropical storm, and
SAB's Hebert/Poteat numbers reached ST3.0, suggesting winds of 45 kts.
The system formed within the envelope of an upper-level cold LOW, and
according to Jack Beven, was capped with a very large upper-level warm
core. This warm core was likely created by a suppressed tropopause
and stratospheric air intrusion rather than warming due to convective
heating, suggesting the system was not a tropical cyclone. SSTs were
near 15 C, while AMSU data indicated that 500-mb temperatures were
around -20 to -24 C. It is within the realm of possibility that this
system might be reviewed for inclusion as a subtropical cyclone, but
I tend to think it doubtful that this LOW will ever find its way into
the Atlantic Best Tracks file.
*************************************************************************
*************************************************************************
!!!!!!!!!!!!!!!!! EXTRA FEATURE !!!!!!!!!!!!!!!!!
A REVIEW OF THE 2008-2009 TROPICAL CYCLONE SEASON
FOR THE SOUTHERN HEMISPHERE
Following is a tabular summary of all the tropical depressions
and tropical cyclones which occurred in the Southern Hemisphere
between 1 July 2008 and 30 June 2009 as reported in the Monthly
Global Tropical Cyclone Summaries prepared by the author.
(1) Number - this is the sequential cyclone number assigned by JTWC
in Hawaii.
(2) Name - the name (if any) assigned by the responsible Tropical
Cyclone Warning Centre. For systems in the South Indian Ocean
west of 90E and in the Southwest Pacific east of 160E which were
unnamed, the alphanumeric designator applied by La Reunion or
Fiji, respectively, is given in this column.
(3) Dates - range of dates for which tracking information for the
cyclone is available in the Global Tropical Cyclone Tracks files
prepared by the author. The dates given in most cases refer to
the time the system was in warning status and generally do not
include the pre-depression stages of the disturbance.
(4) Pressure - Lowest central pressure (either estimated or recorded)
during the lifetime of the cyclone. An asterisk (*) following
the pressure indicates the reading was an actual measured
pressure. Central pressure is given in millibars, which is
numerically equivalent to hectopascals.
(5) MSW 1-min avg - maximum 1-minute average sustained windspeed in
knots as assigned by JTWC. An asterisk (*) following the MSW
indicates that it was an actual measured value.
(6) MSW 10-min avg - maximum 10-minute average sustained windspeed
in knots as assigned by the responsible Tropical Cyclone Warning
Centre. An asterisk (*) following the MSW indicates that it was
an actual measured value.
(7) Basins - tropical cyclone basins where the cyclone tracked during
its life:
SWI - Southwest Indian Ocean - West of 90E
AUW - Northwest Australia/Southeast Indian Ocean - 90E to 135E
AUE - Northeast Australia/Coral Sea - 135E to 160E
SPA - South Pacific Ocean - East of 160E
SAT - South Atlantic Ocean
A number in parentheses (e.g. (1) ) following an entry refers to
a note following the entries for the given basin. A separate table
is given for each of the four Southern Hemisphere basins.
Abbreviations for Tropical Cyclone Warning Centres:
JTWC - Joint Typhoon Warning Center, formerly on Guam, now at
Pearl Harbor, Hawaii
MFR - Meteo France Reunion (RSMC La Reunion)
RSMC - Regional Specialised Meteorological Centre
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
SOUTHWEST INDIAN OCEAN
JTWC NAME DATES CENT MSW MSW BASIN
NUM PRS 1-MIN 10-MIN
(mb) (kts) (kts)
------------------------------------------------------------------------
01S Asma 16-23 Oct 985 55 45 SWI
03S Bernard 19-21 Nov 994 40 35 SWI
04S Cinda 15-21 Dec 985 55 50 SWI
06S Dongo 08-18 Jan 985 55 50 SWI
08S Eric 17-21 Jan 994 35 35 SWI
09S Fanele 18-27 Jan 927 100 100 SWI
13S Gael 01-12 Feb 934 120 95 SWI
16S Hina 21-26 Feb 980 60 55 SWI
19S (MFR-10) 08-10 Mar 997 35 30 SWI
24S Izilda 24-29 Mar 974 65 60 SWI
26S Jade 03-14 Apr 975 65 60 SWI
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
NORTHWEST AUSTRALIA / SOUTHEAST INDIAN OCEAN
JTWC NAME DATES CENT MSW MSW BASIN
NUM PRS 1-MIN 10-MIN
(mb) (kts) (kts)
------------------------------------------------------------------------
02S Anika 19-21 Nov 990 50 50 AUW
05S Billy 17-29 Dec 948 105 95 AUW
10S Dominic 25-27 Jan 980 50 50 AUW
14S Freddy 03-15 Feb 983 55 50 AUW
--- ----- 26-28 Feb 996 -- 30 AUW
17S Gabrielle 01-05 Mar 998 35 40 AUW (1)
22S Ilsa 17-27 Mar 958 110 90 AUW
27S Kirrily 26-29 Apr 998 40 35 AUW
NOTES:
(1) During a post-storm analysis, it was determined that Gabrielle had
not met Australia's requirements for a tropical cyclone. Gales did
occur in one quadrant or another at a time, but to qualify as a
tropical cyclone, gales must occur in at least two quadrants
simultaneously for at least six hours.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
NORTHEAST AUSTRALIA / CORAL SEA
JTWC NAME DATES CENT MSW MSW BASIN
NUM PRS 1-MIN 10-MIN
(mb) (kts) (kts)
------------------------------------------------------------------------
07P Charlotte 09-12 Jan 987 35 45 AUE
12P Ellie 29 Jan-01 Feb 990 40 40 AUE (1)
18P Hamish 05-13 Mar 925 130 115 AUE
--- ----- 18-22 Mar 997 -- 40 AUE/SPA (2)
23P Jasper 22-26 Mar 980 45 55 AUE/SPA
--- ----- 16-25 Apr 988 -- 45 AUE/SPA (3)
NOTES:
(1) Ingham (WMO 32078, 18.65S/146.18E, Alt. 11.8m) reported a 10-min
mean wind of 43 kts at 31/1700 UTC.
(2) While within Brisbane's AOR, this system was more tropical in nature
and had some associated gales. After moving into Nadi's AOR, the
LOW took on a more hybrid character.
(3) According to Derrick Herndon, on 23 April the AMSU intensity
algorithm suggested a CP of 970 mb and winds of 70 kts. He also
noted that QuikScat imagery on the same date indicated wind flags
of 60 kts. The LOW at this time sported a large eye-like feature,
and since it appeared to be warm core and driven by convective
instead of baroclinic processes, it may possibly have been a
tropical cyclone.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
SOUTH PACIFIC OCEAN
JTWC NAME DATES CENT MSW MSW BASIN
NUM PRS 1-MIN 10-MIN
(mb) (kts) (kts)
------------------------------------------------------------------------
--- (05F) 12-14 Jan 999 -- 30 SPA
--- (06F) 19-23 Jan 1006 -- 30 SPA (1)
11P Hettie 25-31 Jan 993 35 35 SPA
--- (09F) 01-05 Feb 997 -- 30 SPA (1)
15P Innis 14-24 Feb 990 35 40 SPA
20P Joni 10-15 Mar 980 55 55 SPA
21P Ken 16-24 Mar 985 45 50 SPA
25P Lin 31 Mar-09 Apr 975 50 60 SPA
--- ----- 15-18 Apr 1004 40 -- SPA (2)
NOTES:
(1) Peripheral gales occurred with this system.
(2) System was a subtropical LOW. SAB rendered a Hebert/Poteat number
of ST3.0 on 16 April. The CP value is based upon NCEP reanalysis
data.
*************************************************************************
*************************************************************************
ATLANTIC (ATL) - North Atlantic Ocean, Caribbean Sea, Gulf of Mexico
Sources of Information
----------------------
The track coordinates, central pressure and 1-minute average
maximum sustained wind values were obtained from the operational
forecast/advisories issued by the Tropical Prediction Center/National
Hurricane Center located in Miami, Florida. A 1-minute averaging
period is the standard used by all U. S. civilian and military
warning services for tropical cyclone warnings.
Following is the link to the Wikipedia page for the 2009 Atlantic
Hurricane Season:
http://en.wikipedia.org/wiki/2009_Atlantic_hurricane_season>
Systems Tracked
---------------
Non-tropical LOW (Invest 92L) 28 May - 04 Jun
*************************************************************************
Storm Name: None Cyclone Number: None Basin: ATL
(System was a non-tropical LOW - Invest Number 92L)
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
09 MAY 28 1800 40.9 N 56.0 W 1013
09 MAY 29 0000 40.2 N 51.4 W 1013
09 MAY 29 0600 40.0 N 47.1 W 1012
09 MAY 29 1200 40.1 N 42.5 W 1009
09 MAY 29 1800 40.3 N 37.7 W 1006
09 MAY 30 0000 40.7 N 35.0 W 1008
09 MAY 30 0600 40.3 N 32.7 W 1005
09 MAY 30 1200 40.2 N 31.5 W 1005
09 MAY 30 1800 40.1 N 30.1 W 1004
09 MAY 31 0000 40.1 N 29.6 W 1006
09 MAY 31 0600 40.2 N 29.0 W 1003
09 MAY 31 1200 40.1 N 28.6 W 1004
09 MAY 31 1800 40.0 N 27.5 W 1002
09 JUN 01 0000 38.4 N 28.0 W 1004 30
09 JUN 01 0600 38.7 N 26.3 W 1003 30
09 JUN 01 1200 39.2 N 25.5 W 1001 30
09 JUN 01 1800 40.1 N 24.7 W 1001 35 ST1.5
09 JUN 02 0000 40.8 N 24.2 W 1001 35 ST2.5
09 JUN 02 0600 41.7 N 23.7 W 999 40 ST2.5
09 JUN 02 1200 42.8 N 23.7 W 995 45 ST3.0
09 JUN 02 1800 44.0 N 23.8 W 995 45 ST3.0
09 JUN 03 0000 44.7 N 24.7 W 995 45 ST3.0
09 JUN 03 0600 44.9 N 25.2 W 996 40 ST2.5
09 JUN 03 1200 44.7 N 25.6 W 997 35 ST2.5
09 JUN 03 1800 44.8 N 24.3 W SAB: 44.2N 25.4W/ST2.5
09 JUN 04 0000 44.6 N 24.3 W SAB: 43.3N 24.3W/ST1.5
09 JUN 04 0600 44.2 N 21.2 W
09 JUN 04 1200 44.8 N 19.8 W
09 JUN 04 1800 44.4 N 18.6 W
Note: A special thanks to Steve Young for producing and sending the above
track. Portions of the track through 31 May 1800 UTC and from 03 June
1800 UTC were generated using GRADS software with the NCEP re-analysis.
Data points from 01 June 0000 UTC through 03 June 1200 UTC are based upon
NRL data files. Satellite classifications using the Hebert/Poteat method
for subtropical systems were obtained from SAB satellite bulletins.
This system was not a tropical cyclone, but did display some satellite
characteristics of a subtropical cyclone. TPC/NHC currently considers
the LOW to have been non-tropical--it remains to be seen if it might
possibly be considered for reclassification as a subtropical cyclone.
*************************************************************************
*************************************************************************
NORTHEAST PACIFIC (NEP) - North Pacific Ocean East of Longitude 180
Sources of Information
----------------------
The track coordinates, central pressure and 1-minute average
maximum sustained wind values were obtained from the operational
forecast/advisories issued by the Tropical Prediction Center/National
Hurricane Center in Miami, Florida, for locations east of longitude
140W, and from the Central Pacific Hurricane Center in Honolulu,
Hawaii, for locations west of longitude 140W. A 1-minute averaging
period is the standard used by all U. S. civilian and military
warning services for tropical cyclone warnings.
Following is the link to the Wikipedia page for the 2009 Eastern
Pacific Hurricane Season. Detailed reports for Tropical Depression 01E
and Hurricane Andres are already available.
http://en.wikipedia.org/wiki/2009_Pacific_hurricane_season>
Systems Tracked
---------------
Tropical Depression (01E) 18 - 19 Jun
Hurricane ANDRES (02E) 21 - 24 Jun
*************************************************************************
Storm Name: None Cyclone Number: 01E Basin: NEP
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
09 JUN 18 1200 17.9 N 108.5 W 1005 25
09 JUN 18 1800 17.9 N 108.2 W 1005 25
09 JUN 19 0000 18.5 N 107.8 W 1005 30
09 JUN 19 0600 19.2 N 107.3 W 1004 30
09 JUN 19 1200 20.3 N 107.1 W 1003 30
09 JUN 19 1800 21.9 N 106.9 W 1001 30
09 JUN 19 2100 22.3 N 106.9 W 1001 30
Note: A special advisory package was issued at 20/0000 UTC to report that
the depression had dissipated.
*************************************************************************
Storm Name: ANDRES Cyclone Number: 02E Basin: NEP
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
09 JUN 21 1800 14.6 N 101.3 W 1002 30
09 JUN 22 0000 14.7 N 101.7 W 999 35
09 JUN 22 0600 14.9 N 102.0 W 998 40
09 JUN 22 1200 15.8 N 101.9 W 997 45
09 JUN 22 1800 16.0 N 102.3 W 995 50
09 JUN 23 0000 16.5 N 102.8 W 995 50
09 JUN 23 0600 17.2 N 103.1 W 994 55
09 JUN 23 1200 17.8 N 104.0 W 990 60
09 JUN 23 1800 18.4 N 104.8 W 988 60
09 JUN 24 0000 18.9 N 105.6 W 988 65 Upgraded at 2100Z
09 JUN 24 0600 19.3 N 106.4 W 990 60 Downgraded at 0300Z
09 JUN 24 1200 20.1 N 107.4 W 1000 40 See Note
09 JUN 24 1800 21.5 N 107.6 W 1008 25 Dissipated
Note: The 24/0900 UTC advisory maintained Andres as a 50 kt/996 mb
tropical storm, whereas at 1500 UTC the cyclone was downgraded to a
30 kt/1005 mb tropical depression. The CP and MSW I've included above
for synoptic hour 24/1200 UTC is an average of the two.
*************************************************************************
*************************************************************************
NORTHWEST PACIFIC (NWP) - North Pacific Ocean West of Longitude 180
Sources of Information
----------------------
The track coordinates and 1-minute average maximum sustained wind
values in general were taken from operational warnings issued by the
Joint Typhoon Warning Center (JTWC) of the U. S. Air Force and Navy,
located at Pearl Harbor, Hawaii. The central pressure and 10-minute
average maximum sustained wind estimates for most systems were obtained
from warnings issued by the Japanese Meteorological Agency (JMA), which
is the World Meteorological Organization's Regional Specialised Meteor-
ological Centre for the basin. In a few instances, information from
warnings issued by other Asian warning centers may have been utilized.
The center position coordinates from JMA and other centers were com-
pared with those from JTWC and annotations made in the Remarks column
when the differences in general amounted to 40-50 nm or more.
Michael V. Padua of Naga City in the Philippines, owner of the
Typhoon 2000 website, sends me cyclone tracks based upon warnings
issued by the Japanese Meteorological Agency and the Philippines'
Atmospheric, Geophysical & Astronomical Services Administration
(PAGASA). A special thanks to Michael for his efforts.
Following is the link to the Wikipedia page for the 2009 Pacific
Typhoon Season. A detailed report for Typhoon Linfa is already
available.
http://en.wikipedia.org/wiki/2009_Pacific_typhoon_season>
Following are links to Michael Padua's storm log for Tropical
Storm Nangka/Feria:
http://www.typhoon2000.ph/stormarchives/2009/stormlogs/06feria09_log.htm>
http://www.maybagyo.com/stormarchives/2009/stormlogs/06feria09_log.htm>
Systems Tracked
---------------
Typhoon LINFA (03W / 0903) 14 - 23 Jun
Tropical Storm NANGKA (04W / 0904 / FERIA) 22 - 27 Jun
*************************************************************************
Storm Name: LINFA Cyclone Number: 03W Basin: NWP
PAGASA Internal Name: None JMA Tropical Storm Number: 0903
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
09 JUN 14 0600 12.0 N 128.0 E 1006 25 JMA bulletins
09 JUN 14 1200 13.0 N 126.0 E 1006 25
09 JUN 14 1800 14.0 N 126.0 E 1006 25
09 JUN 15 0000 14.0 N 127.0 E 1006 20 Downgraded to LPA
09 JUN 15 0600 16.0 N 127.0 E 1006 20
09 JUN 15 1200 16.0 N 125.0 E 1006 20
09 JUN 15 1800 16.0 N 124.0 E 1006 20
09 JUN 16 0000 16.0 N 124.0 E 1006 20
09 JUN 16 0600 18.0 N 124.0 E 1004 20
09 JUN 16 1200 19.0 N 124.0 E 1004 20
09 JUN 16 1800 18.0 N 117.0 E 1004 20 New LOW center
09 JUN 17 0000 17.0 N 117.0 E 1006 20
09 JUN 17 0600 17.4 N 116.6 E 1002 20 25
09 JUN 17 1200 18.2 N 116.7 E 1002 30 25
09 JUN 17 1800 18.2 N 116.2 E 1002 35 25 JMA: 19.0N/117.0E
09 JUN 18 0000 18.1 N 116.8 E 1002 40 30 JMA: 17.6N/116.3E
09 JUN 18 0600 17.8 N 116.4 E 996 40 35
09 JUN 18 1200 17.5 N 116.4 E 994 40 35
09 JUN 18 1800 17.4 N 116.7 E 994 40 35
09 JUN 19 0000 18.1 N 116.8 E 994 45 35 JMA: 17.6N/116.9E
09 JUN 19 0600 18.4 N 117.5 E 990 50 45
09 JUN 19 1200 19.2 N 117.3 E 985 50 50
09 JUN 19 1800 19.6 N 117.2 E 985 55 50
09 JUN 20 0000 20.2 N 117.2 E 980 60 55
09 JUN 20 0600 20.4 N 117.4 E 980 65 55
09 JUN 20 1200 21.2 N 117.7 E 975 75 60
09 JUN 20 1800 22.0 N 118.0 E 980 70 55
09 JUN 21 0000 23.2 N 118.5 E 985 65 50 JMA: 22.6N/118.2E
09 JUN 21 0600 23.8 N 118.6 E 985 55 50 JMA: 23.4N/118.2E
09 JUN 21 1200 24.5 N 118.3 E 985 50 50 JMA: 24.1N/118.4E
09 JUN 21 1800 25.3 N 118.7 E 992 35 45 JMA: 24.8N/118.5E
09 JUN 22 0000 25.9 N 119.3 E 996 30 40
09 JUN 22 0600 26.8 N 120.3 E 998 30 30
09 JUN 22 1200 27.7 N 121.9 E 1000 25 25 JMA: 28.0N/121.0E
09 JUN 22 1800 29.0 N 122.0 E 1000 25 JMA bulletins
09 JUN 23 0000 30.0 N 123.0 E 1000 25
Note: JMA classified this disturbance as a minor tropical depression at
14/0600 UTC but downgraded it to a low-pressure area 18 hours later. A
new LOW center formed on 16 June about 400 nm west of the old center,
which was still being followed. The Wikipedia report treats the two as
one system; however, JMA continued to report the old center in their
high seas bulletins for another 24 hours or so after the new center had
been identified in the South China Sea. My inclination was to treat the
system as two separate disturbances, but in order to be consistent with
the Wikipedia report, I have compiled just one track, indicating in the
Remarks column at which point the new center developed.
*************************************************************************
Storm Name: NANGKA Cyclone Number: 04W Basin: NWP
PAGASA Internal Name: FERIA JMA Tropical Storm Number: 0904
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 10-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
09 JUN 22 1200 11.0 N 129.2 E 1002 25 30
09 JUN 22 1800 11.1 N 128.0 E 1002 30 30
09 JUN 23 0000 11.1 N 126.7 E 1002 35 30
09 JUN 23 0600 11.3 N 125.8 E 998 35 35 JMA: 12.1N/125.6E
09 JUN 23 1200 11.8 N 124.1 E 994 35 40
09 JUN 23 1800 12.1 N 123.0 E 994 45 40
09 JUN 24 0000 12.6 N 122.2 E 994 45 40
09 JUN 24 0600 13.0 N 121.5 E 996 40 40
09 JUN 24 1200 13.6 N 120.3 E 994 40 40
09 JUN 24 1800 14.4 N 119.3 E 996 40 40
09 JUN 25 0000 15.1 N 118.8 E 994 45 40
09 JUN 25 0600 16.1 N 118.4 E 994 45 40
09 JUN 25 1200 17.5 N 117.7 E 996 40 35
09 JUN 25 1800 18.6 N 116.8 E 996 40 35
09 JUN 26 0000 19.2 N 116.3 E 996 40 35
09 JUN 26 0600 20.8 N 115.6 E 996 40 35
09 JUN 26 1200 22.2 N 114.9 E 996 30 35
09 JUN 26 1800 22.9 N 114.4 E 998 25 30 Inland in China
09 JUN 27 0000 24.0 N 115.0 E 1002 25 JMA bulletin
*************************************************************************
*************************************************************************
NORTH INDIAN OCEAN (NIO) - Bay of Bengal and Arabian Sea
Sources of Information
----------------------
The track coordinates and 1-minute average maximum sustained wind
values in general were taken from operational warnings issued by the
Joint Typhoon Warning Center (JTWC) of the U. S. Air Force and Navy,
located at Pearl Harbor, Hawaii. Occasionally some information may
have been 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 Meteor-
ological Centre for the basin.
The reported maximum sustained winds 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.
SPECIAL NOTE!!! I have changed the header in the second MSW column
to reflect a 3-min avg MSW. This is what the India Meteorological
Department uses as their standard. They do not modify the Dvorak
scale, but consider the reported MSW to be a 3-min avg. The
difference between a true 1-min avg MSW and 3-min avg MSW would be
expected to be essentially negligible. I made this change in order
to have a column available to report IMD's intensity estimates, out
of consideration for the fact that the office is the WMO's official
RSMC for the North Indian Ocean basin. For the Northwest Pacific
basin and the entire Southern Hemisphere, the 10-min avg MSW column
provides a place to report the RSMC's intensity estimate for comparison
purposes with JTWC's 1-min avg MSW.
Following is the link to the Wikipedia page for the 2009 North
Indian Ocean Cyclone Season:
http://en.wikipedia.org/wiki/2009_North_Indian_Ocean_cyclone_season>
Systems Tracked
---------------
Depression (Invest 93A) 22 - 26 Jun
*************************************************************************
Storm Name: None Cyclone Number: None Basin: NIO
(NRL Invest Number 93A)
Date Time Lat Lon Cent MSW MSW Remarks
(GMT) Press 1-min 3-min
(mb) (kts) (kts)
-------------------------------------------------------------------------
09 JUN 22 1900 18.0 N 71.3 E 30 SAB bulletin-T2.0/2.0
09 JUN 23 0000 18.0 N 71.5 E 998 30 25 JTWC: 19.1N/70.6E
09 JUN 23 0300 19.0 N 71.5 E 1000 30 25 SAB: T2.0/2.0
09 JUN 23 0830 20.3 N 70.9 E 30 SAB: T2.0/2.0
09 JUN 23 1200 20.5 N 71.0 E 998 25 IMD bulletin
09 JUN 23 1730 21.5 N 70.5 E 30 Inland/JTWC bulletin
09 JUN 23 2030 21.1 N 70.2 E 30 SAB bulletin-T2.5/2.5
09 JUN 23 2300 22.0 N 69.7 E 30 JTWC bulletin/overland
09 JUN 24 0530 22.0 N 70.0 E 25 "
09 JUN 24 1130 22.1 N 69.6 E 25 "
09 JUN 24 1715 22.9 N 69.4 E 25 "
09 JUN 24 2330 23.0 N 68.6 E 25 Center over Arabian Sea
09 JUN 25 0530 22.6 N 68.7 E 25
09 JUN 25 0900 22.5 N 68.6 E 998 25 IMD bulletin
09 JUN 25 1200 22.8 N 68.5 E 996 25 25
09 JUN 25 1730 23.0 N 68.3 E 25 JTWC bulletin
09 JUN 25 2330 23.7 N 68.0 E 25 "
09 JUN 26 0530 23.1 N 69.5 E 20 " / Overland
Note: A few of the 1-min avg MSW values were taken from a track sent to
the author by Steve Young which presumably was based on NRL data.
*************************************************************************
*************************************************************************
SOURCES OF TROPICAL CYCLONE INFORMATION
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:
ftp://ftp.nhc.noaa.gov/pub/products/nhc/recon/>
Information regarding how to interpret the coded reconnaissance
messages may be found at the following URL:
http://www.nhc.noaa.gov/reconlist.shtml>
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:
http://www.nhc.noaa.gov/archive/2004/index.shtml>
Links to tropical products archives for earlier years are available at
the following URL:
http://www.nhc.noaa.gov/pastall.shtml>
JTWC warnings for past storms are archived on the NRL Monterrey website:
http://www.nrlmry.navy.mil/tc_pages/tc_home.html>
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:
http://www.nrlmry.navy.mil/tc_pages/tc_home.html>
http://cimss.ssec.wisc.edu/tropic/tropic.html>
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:
http://www.ssd.noaa.gov/PS/TROP/trop-epac.html>
(2) For the Atlantic, Gulf of Mexico and Caribbean Sea:
http://www.ssd.noaa.gov/PS/TROP/trop-atl.html>
(4) Cyclone Tracking Information
--------------------------------
There is a U. S. Navy site that tracks tropical cyclones at 6-hourly
intervals which often includes pre and post-advisory positions. The
link to the site is:
http://www.nrlmry.navy.mil/atcf_web/doc_archives/>
Steve Young has compiled many of these tracks onto a single webpage
which is very user-friendly:
http://home.earthlink.net/~shy9/tc1.htm>
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!!!!!! IMPORTANT NOTE - PLEASE READ !!!!!!
To repeat the caveat which is included in the Author's Note
at the end of the cyclone summaries--the tropical cyclone tracks
I prepare are based upon the operational warnings/advisories/
advices/bulletins which are issued by the various tropical cyclone
warning agencies around the world. Users of these tracks should
be aware that they are preliminary and subject to revision during
post-seasonal analyses of the cyclones by the forecasters and
analysts at the several warning centers.
For the Atlantic and Northeast Pacific basins, official tropical
cyclone reports and "best tracks" can be found at the website of
the Tropical Prediction Center/National Hurricane Center:
http://www.nhc.noaa.gov>
The Joint Typhoon Warning Center's website contains links to their
Annual Tropical Cyclone Reports which include that agency's "best
tracks" for tropical cyclones in the Northwest Pacific basin, the
North Indian Ocean, and the Southern Hemisphere:
https://metocph.nmci.navy.mil/jtwc.php>
SPECIAL NOTE: Back issues of the global tropical cyclone summaries
and monthly cyclone track files can be obtained at the following
websites:
ftp://ftp.aoml.noaa.gov/hrd/pub/landsea/padgett/>
http://australiasevereweather.com/cyclones/>
http://www.typhoon2000.ph>
http://mpittweather.com>
PREPARED BY:
Gary Padgett [email protected]
SIGNIFICANT CONTRIBUTIONS BY:
Michael V. Padua [email protected]
[email protected]
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Document: trak0906.htm
Updated: 9th July 2009 |
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