Tropical Cyclones [Index]

Tropical Cyclone 199737 [Australian Region][South Indian Ocean][South Pacific Ocean][Southern Hemisphere]

WTPS21 PGTW 970527 14:00z
SUBJ/TROPICAL CYCLONE FORMATION ALERT 271355Z MAY 97//
RMKS/
1. IMMEDIATE DELIVERY REQ TO AMEMBASSY SUVA
2. IMMEDIATE DELIVERY REQ TO AMEMBASSY PORT MORESBY AND
AMEMBASSY HONIARA SOLOMON ISLANDS
3. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS
POSSIBLE WITHIN A 350 NM RADIUS OF 12.0S3 168.8E3 WITHIN
THE NEXT 12 TO 24 HOURS. AVAILABLE DATA DOES NOT JUSTIFY
ISSUANCE OF NUMBERED TROPICAL CYCLONE WARNINGS AT THIS
TIME. WINDS IN THE AREA ARE ESTIMATED TO BE 25 TO 25
KNOTS. METSAT IMAGERY AT 271030Z INDICATES THAT A
CIRCULATION CENTER IS LOCATED NEAR 12.1S4 168.8E3.  THE
SYSTEM IS MOVING SOUTHWARD AT 01 KNOTS.
4. REMARKS:  A TROPICAL DISTURBANCE HAS FORMED SOUTHEAST
OF THE SOLOMON ISLANDS IN RESPONSE TO STRONG WESTERLY
WINDS ALONG THE EQUATOR. CONVECTION REMAINS DISORGANIZED,
HOWEVER SYNOPTIC DATA INDICATES THE PRESENCE OF A LOW
LEVEL CIRCULATION CENTER.  THE DISTURBANCE HAS REMAINED
QUASI-STATIONARY.
5. THIS ALERT VALID UNTIL 281400Z5.//
=========================================================================
WTPS31 PGTW 970528 09:00z
IMMEDIATE DELIVERY REQ TO AMEMBASSY SUVA
AMEMBASSY SUVA REQ PASS TO USAID OFDA ADVISOR
IMMEDIATE DELIVERY REQ TO AMEMBASSY PORT MORESBY
1. TROPICAL CYCLONE 37P WARNING NR 001
   01 ACTIVE TROPICAL CYCLONE IN SOUTHERN HEMISPHERE
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   280600Z6 --- 14.3S8 167.3E7
     MOVEMENT PAST SIX HOURS - 170 DEGREES AT 06 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   REPEAT POSIT: 14.3S8 167.3E7
    ---
   FORECASTS:
   12 HRS, VALID AT:
   281800Z9 --- 15.6S2 167.6E0
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   VECTOR TO 24 HR POSIT: 160 DEG/ 09 KTS
    ---
   24 HRS, VALID AT:
   290600Z7 --- 17.2S0 168.2E7
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   RADIUS OF 035 KT WINDS - 040 NM NORTHEAST SEMICIRCLE
                            025 NM ELSEWHERE
   VECTOR TO 36 HR POSIT: 150 DEG/ 10 KTS
    ---
   36 HRS, VALID AT:
   291800Z0 --- 18.9S8 169.2E8
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   VECTOR TO 48 HR POSIT: 140 DEG/ 12 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   300600Z9 --- 20.7S9 170.8E6
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   BECOMING EXTRATROPICAL
    ---
REMARKS:
280900Z9 POSITION 14.6S1  167.4E8
TROPICAL CYCLONE 37P (TC 37P) HAS FORMED NORTHEAST OF
ESPIRITU SANTU ISLAND AND IS MOVING SOUTHWARD AT 6 KNOTS.
THE WARNING POSITION IS BASED ON 280530Z VISIBLE
SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED ON
280425Z VISIBLE AND INFRARED SATELLITE IMAGERY. TC 37P IS
FORECAST TO GRADUALLY TURN EASTWARD AND ACCELERATE IN
STEERING FLOW BETWEEN A MID-LEVEL RIDGE TO THE NORTHEAST
AND A MID-LEVEL TROUGH TO THE SOUTHWEST. TC 37P IS
FORECAST TO INTENSIFY THROUGH 24 HOURS, THEN WEAKEN
AFTER IT ENCOUNTERS STRONGER VERTICAL WIND SHEAR.
MAXIMUM SIGNIFICANT WAVE HEIGHT AT 280600Z IS 11 FEET.
NEXT WARNINGS AT 282100Z3 (DTG 281951Z6) AND 290900Z0
(DTG 290751Z4). THIS WARNING SUPERSEDES AND CANCELS
NAVPACMETOCCEN WEST GU 271355Z MAY 97 TROPICAL CYCLONE
FORMATION ALERT (WTPS21 PGTW 271400).//
=========================================================================
WTPS31 PGTW 970528 21:00z
IMMEDIATE DELIVERY REQ TO AMEMBASSY SUVA
AMEMBASSY SUVA REQ PASS TO USAID OFDA ADVISOR
IMMEDIATE DELIVERY REQ TO AMEMBASSY PORT MORESBY
1. TROPICAL CYCLONE 37P WARNING NR 002
   01 ACTIVE TROPICAL CYCLONE IN SOUTHERN HEMISPHERE
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   281800Z9 --- 15.9S5 167.7E1
     MOVEMENT PAST SIX HOURS - 165 DEGREES AT 07 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   REPEAT POSIT: 15.9S5 167.7E1
    ---
   FORECASTS:
   12 HRS, VALID AT:
   290600Z7 --- 17.4S2 168.1E6
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   VECTOR TO 24 HR POSIT: 160 DEG/ 07 KTS
    ---
   24 HRS, VALID AT:
   291800Z0 --- 18.8S7 168.6E1
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   RADIUS OF 035 KT WINDS - 040 NM NORTHEAST SEMICIRCLE
                            025 NM ELSEWHERE
   VECTOR TO 36 HR POSIT: 150 DEG/ 08 KTS
    ---
   36 HRS, VALID AT:
   300600Z9 --- 20.2S4 169.4E0
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   VECTOR TO 48 HR POSIT: 130 DEG/ 08 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   301800Z2 --- 21.3S6 170.7E5
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
    ---
REMARKS:
282100Z3 POSITION 16.3S0  167.8E2
TROPICAL CYCLONE 37P IS MOVING SOUTH-SOUTHEASTWARD AT
7 KNOTS.  THE SYSTEM IS FORECAST TO PEAK WITHIN THE NEXT
24 HOURS FOLLOWED BY RAPID WEAKENING AND EXTRATROPICAL
TRANSITION AS IT ENCOUNTERS STRONG VERTICAL WIND SHEAR
SOUTH OF THE SUBTROPICAL RIDGE. MAXIMUM SIGNIFICANT WAVE
HEIGHT AT 281800Z9 IS 11 FEET. NEXT WARNINGS AT 290900Z0
(DTG 290755Z8) AND 292100Z4 (DTG 291955Z1).//
=========================================================================
WTPS31 PGTW 970529 09:00z
IMMEDIATE DELIVERY REQ TO AMEMBASSY SUVA
AMEMBASSY SUVA REQ PASS TO USAID OFDA ADVISOR
1. TROPICAL CYCLONE 37P WARNING NR 003
   01 ACTIVE TROPICAL CYCLONE IN SOUTHERN HEMISPHERE
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   290600Z7 --- 16.7S4 168.1E6
     MOVEMENT PAST SIX HOURS - 160 DEGREES AT 08 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY A COMBINATION OF
     SATELLITE AND SYNOPTIC DATA
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   REPEAT POSIT: 16.7S4 168.1E6
    ---
   FORECASTS:
   12 HRS, VALID AT:
   291800Z0 --- 17.8S6 168.6E1
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   RADIUS OF 035 KT WINDS - 040 NM NORTHEAST SEMICIRCLE
                            025 NM ELSEWHERE OVER WATER
   VECTOR TO 24 HR POSIT: 155 DEG/ 05 KTS
    ---
   24 HRS, VALID AT:
   300600Z9 --- 18.7S6 169.0E6
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER
WATER
   VECTOR TO 36 HR POSIT: 155 DEG/ 05 KTS
    ---
   36 HRS, VALID AT:
   301800Z2 --- 19.6S6 169.4E0
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER
WATER
   VECTOR TO 48 HR POSIT: 140 DEG/ 06 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   310600Z0 --- 20.5S7 170.2E0
   MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER
WATER
    ---
REMARKS:
290900Z0 POSITION 17.0S8  168.2E7
TROPICAL CYCLONE 37P IS TRACKING SOUTH-SOUTHEASTWARD AT 8
KNOTS. THE SYSTEM IS EXPECTED TO INTENSIFY THROUGH THE
12-HOUR FORECAST POSITION AND TO WEAKEN BEYOND THE 24-
HOUR FORECAST POSITION AS THE SYSTEM ENCOUNTERS STRONG
VERTICAL WIND SHEAR. THE SYSTEM IS FORECAST TO BE
DISSIPATED BY THE 48-HOUR FORECAST POSITION. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 290600Z IS 12 FEET. NEXT
WARNINGS AT 292100Z4 (DTG 291955Z1) AND 300900Z2 (DTG
300755Z0).//
=========================================================================
WTPS31 PGTW 970529 21:00z
IMMEDIATE DELIVERY REQ TO AMEMBASSY SUVA
AMEMBASSY SUVA REQ PASS TO USAID OFDA ADVISOR
1. TROPICAL CYCLONE 37P WARNING NR 004
   01 ACTIVE TROPICAL CYCLONE IN SOUTHERN HEMISPHERE
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   291800Z0 --- 18.0S9 170.0E8
     MOVEMENT PAST SIX HOURS - 125 DEGREES AT 12 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   REPEAT POSIT: 18.0S9 170.0E8
    ---
   FORECASTS:
   12 HRS, VALID AT:
   300600Z9 --- 19.5S5 171.7E6
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   VECTOR TO 24 HR POSIT: 135 DEG/ 09 KTS
    ---
   24 HRS, VALID AT:
   301800Z2 --- 20.8S0 173.0E1
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER
WATER
   VECTOR TO 36 HR POSIT: 145 DEG/ 08 KTS
    ---
   36 HRS, VALID AT:
   310600Z0 --- 22.1S5 173.9E0
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER
WATER
    ---
REMARKS:
292100Z4 POSITION 18.4S3  170.4E2
TROPICAL CYCLONE 37P IS MOVING SOUTHEASTWARD AT 12
KNOTS. WE EXPECT TC 37P TO CONTINUE SOUTHEASTWARD AND TO
DISSIPATE AS A SIGNIFICANT TROPICAL CYCLONE WITHIN THE
NEXT 36 HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT
291800Z0 IS 12 FEET. NEXT WARNINGS AT 300900Z2 (DTG
300755Z0) AND 302100Z6 (DTG 301955Z3).//
=========================================================================
WTPS31 PGTW 970530 09:00z
IMMEDIATE DELIVERY REQ TO AMEMBASSY SUVA
AMEMBASSY SUVA REQ PASS TO USAID OFDA ADVISOR
1. TROPICAL CYCLONE 37P WARNING NR 005
   01 ACTIVE TROPICAL CYCLONE IN SOUTHERN HEMISPHERE
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   300600Z9 --- 18.9S8 172.3E3
     MOVEMENT PAST SIX HOURS - 120 DEGREES AT 11 KTS
     POSITION ACCURATE TO WITHIN 100 NM
     POSITION BASED ON CENTER LOCATED BY A COMBINATION OF
     SATELLITE AND EXTRAPOLATION
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER
WATER
   REPEAT POSIT: 18.9S8 172.3E3
    ---
   FORECASTS:
   12 HRS, VALID AT:
   301800Z2 --- 20.0S2 174.2E4
   MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER
WATER
    ---
REMARKS:
300900Z2 POSITION 19.2S2  172.8E8
TROPICAL CYCLONE 37P (TC 37P) HAS WEAKENED RAPIDLY AS IT
MOVES OVER COOLER WATERS AND ENCOUNTERS STRONGER VERTICAL
WIND SHEAR. TC 37P HAS DISSIPATED AS A SIGNIFICANT
TROPICAL CYCLONE OVER WATER. MAXIMUM SIGNIFICANT WAVE
HEIGHT AT 300600Z IS 9 FEET. THIS IS THE FINAL WARNING ON
THIS SYSTEM BY THE JOINT TYPHOON WARNING CENTER
(NAVPACMETOCCEN WEST GU). THE SYSTEM WILL BE CLOSELY
MONITORED FOR SIGNS OF REGENERATION.//