WPAC: Ex-Tropical Depression (99W)
Moderator: S2k Moderators
Difference in opinion about current location. From JTWC's new significant weather advisory:
701
ABPW10 PGTW 270600
MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND
/SOUTH PACIFIC OCEANS/270600Z-280600ZAUG2010//
REF/A/MSG/NAVMARFCSTCEN PEARL HARBOR HI/270421ZAUG2010//
AMPN/REF A IS A TROPICAL CYCLONE FORMATION ALERT.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
A. TROPICAL CYCLONE SUMMARY: NONE.
B. TROPICAL DISTURBANCE SUMMARY:
(1) THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 22.6N
131.4E, IS NOW LOCATED NEAR 23.2N 130.4E, APPROXIMATELY 235 NM
SOUTHEAST OF OKINAWA, JAPAN. RECENT ANIMATED MULTISPECTRAL
SATELLITE IMAGERY AND A 270059Z 37 GHZ TRMM MICROWAVE IMAGE REVEAL
INCREASED CENTRAL CONVECTION WITH WEAK BANDING WRAPPING INTO A
BROADLY DEFINED LOW LEVEL CIRCULATION CENTER. A 270122Z PARTIAL
ASCAT PASS INDICATES BROAD TROUGHING WITH THE STRONGEST WINDS ALONG
THE THE NORTHERN PERIPHERY OF THE SYSTEM. UPPER LEVEL ANALYSIS
REVEALS THAT THE SYSTEM REMAINS IN AN AREA OF LOW VERTICAL WIND
SHEAR AND ENHANCED DIFFLUENCE ALOFT ASSOCIATED WITH AN UPPER LEVEL
ANTICYCLONE DIRECTLY OVER THE SYSTEM. MAXIMUM SUSTAINED SURFACE
WINDS ARE ESTIMATED AT 15 TO 20 KNOTS. MINIMUM SEA LEVEL PRESSURE
IS ESTIMATED TO BE NEAR 1005 MB. THE POTENTIAL FOR THE DEVELOPMENT
OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS REMAINS
FAIR.
<snip>
701
ABPW10 PGTW 270600
MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND
/SOUTH PACIFIC OCEANS/270600Z-280600ZAUG2010//
REF/A/MSG/NAVMARFCSTCEN PEARL HARBOR HI/270421ZAUG2010//
AMPN/REF A IS A TROPICAL CYCLONE FORMATION ALERT.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
A. TROPICAL CYCLONE SUMMARY: NONE.
B. TROPICAL DISTURBANCE SUMMARY:
(1) THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 22.6N
131.4E, IS NOW LOCATED NEAR 23.2N 130.4E, APPROXIMATELY 235 NM
SOUTHEAST OF OKINAWA, JAPAN. RECENT ANIMATED MULTISPECTRAL
SATELLITE IMAGERY AND A 270059Z 37 GHZ TRMM MICROWAVE IMAGE REVEAL
INCREASED CENTRAL CONVECTION WITH WEAK BANDING WRAPPING INTO A
BROADLY DEFINED LOW LEVEL CIRCULATION CENTER. A 270122Z PARTIAL
ASCAT PASS INDICATES BROAD TROUGHING WITH THE STRONGEST WINDS ALONG
THE THE NORTHERN PERIPHERY OF THE SYSTEM. UPPER LEVEL ANALYSIS
REVEALS THAT THE SYSTEM REMAINS IN AN AREA OF LOW VERTICAL WIND
SHEAR AND ENHANCED DIFFLUENCE ALOFT ASSOCIATED WITH AN UPPER LEVEL
ANTICYCLONE DIRECTLY OVER THE SYSTEM. MAXIMUM SUSTAINED SURFACE
WINDS ARE ESTIMATED AT 15 TO 20 KNOTS. MINIMUM SEA LEVEL PRESSURE
IS ESTIMATED TO BE NEAR 1005 MB. THE POTENTIAL FOR THE DEVELOPMENT
OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS REMAINS
FAIR.
<snip>
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- StormingB81
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- StormingB81
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The ECM still tries to develop a weak system with this region, though its a little weaker then what it was on its 12z run yesterday.
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620
FKPQ30 RJTD 271200
TC ADVISORY
DTG: 20100827/1200Z
TCAC: TOKYO
TC: NIL
NR: 3
PSN: N2700 E12710
MOV: N 09KT
C: 1004HPA
MAX WIND: 30KT
FCST PSN +6HR: 27/1800Z N2850 E12640
FCST MAX WIND +6HR: 35KT
FCST PSN +12HR: 28/0000Z N3005 E12620
FCST MAX WIND +12HR: 35KT
FCST PSN +18HR: 28/0600Z N3430 E12430
FCST MAX WIND +18HR: 35KT
FCST PSN +24HR: 28/1200Z N3440 E12425
FCST MAX WIND +24HR: 35KT
RMK: NIL
NXT MSG: 20100827/1800Z =
FKPQ30 RJTD 271200
TC ADVISORY
DTG: 20100827/1200Z
TCAC: TOKYO
TC: NIL
NR: 3
PSN: N2700 E12710
MOV: N 09KT
C: 1004HPA
MAX WIND: 30KT
FCST PSN +6HR: 27/1800Z N2850 E12640
FCST MAX WIND +6HR: 35KT
FCST PSN +12HR: 28/0000Z N3005 E12620
FCST MAX WIND +12HR: 35KT
FCST PSN +18HR: 28/0600Z N3430 E12430
FCST MAX WIND +18HR: 35KT
FCST PSN +24HR: 28/1200Z N3440 E12425
FCST MAX WIND +24HR: 35KT
RMK: NIL
NXT MSG: 20100827/1800Z =
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- StormingB81
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Re: WPAC: Tropical Depression (99W)
Well, the rain is here...wind, so far, is unimpressive. In fact, it's pretty tame. Come on, invest...this all you got? 

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- StormingB81
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WTPQ20 RJTD 271200
RSMC TROPICAL CYCLONE ADVISORY
NAME TD
ANALYSIS
PSTN 271200UTC 27.0N 127.2E POOR
MOVE N 09KT
PRES 1004HPA
MXWD 030KT
GUST 045KT
FORECAST
24HF 281200UTC 34.7N 124.4E 120NM 70%
MOVE NNW 19KT
PRES 998HPA
MXWD 035KT
GUST 050KT =

JMA Typhoon model not that excited for this system:
FXPQ21 RJTD 270600
RSMC GUIDANCE FOR FORECAST
NAME TD
PSTN 270600UTC 26.1N 127.3E
PRES 1004HPA
MXWD 30KT
FORECAST BY TYPHOON ENSEMBLE PREDICTION SYSTEM
TIME PSTN PRES MXWD
(CHANGE FROM T=0)
T=006 27.7N 126.1E +001HPA +002KT
T=012 30.6N 124.6E 000HPA +001KT
T=018 32.7N 123.7E 000HPA 000KT
T=024 34.5N 123.2E -002HPA 000KT
T=030 36.7N 122.9E -002HPA 000KT
T=036 38.3N 122.8E -003HPA -002KT
T=042 39.3N 122.8E -002HPA -003KT
T=048 40.3N 124.7E -003HPA -006KT
T=054 41.6N 126.1E -002HPA -008KT
T=060 44.4N 128.7E -005HPA -008KT
T=066 46.4N 129.4E -008HPA -009KT
T=072 49.3N 133.7E -012HPA -009KT
T=078 49.9N 135.2E -010HPA -005KT
T=084 51.0N 136.5E -009HPA -009KT
T=090 51.6N 137.2E -007HPA -009KT
T=096 50.6N 137.0E -007HPA -009KT
T=102 51.9N 138.8E -006HPA -004KT
T=108 52.3N 139.8E -005HPA -003KT
T=114 55.4N 145.0E -003HPA -006KT
T=120 52.3N 160.4E -008HPA +008KT
T=126 52.8N 162.9E -007HPA +005KT
T=132 53.4N 165.7E -008HPA +003KT=
RSMC TROPICAL CYCLONE ADVISORY
NAME TD
ANALYSIS
PSTN 271200UTC 27.0N 127.2E POOR
MOVE N 09KT
PRES 1004HPA
MXWD 030KT
GUST 045KT
FORECAST
24HF 281200UTC 34.7N 124.4E 120NM 70%
MOVE NNW 19KT
PRES 998HPA
MXWD 035KT
GUST 050KT =

JMA Typhoon model not that excited for this system:
FXPQ21 RJTD 270600
RSMC GUIDANCE FOR FORECAST
NAME TD
PSTN 270600UTC 26.1N 127.3E
PRES 1004HPA
MXWD 30KT
FORECAST BY TYPHOON ENSEMBLE PREDICTION SYSTEM
TIME PSTN PRES MXWD
(CHANGE FROM T=0)
T=006 27.7N 126.1E +001HPA +002KT
T=012 30.6N 124.6E 000HPA +001KT
T=018 32.7N 123.7E 000HPA 000KT
T=024 34.5N 123.2E -002HPA 000KT
T=030 36.7N 122.9E -002HPA 000KT
T=036 38.3N 122.8E -003HPA -002KT
T=042 39.3N 122.8E -002HPA -003KT
T=048 40.3N 124.7E -003HPA -006KT
T=054 41.6N 126.1E -002HPA -008KT
T=060 44.4N 128.7E -005HPA -008KT
T=066 46.4N 129.4E -008HPA -009KT
T=072 49.3N 133.7E -012HPA -009KT
T=078 49.9N 135.2E -010HPA -005KT
T=084 51.0N 136.5E -009HPA -009KT
T=090 51.6N 137.2E -007HPA -009KT
T=096 50.6N 137.0E -007HPA -009KT
T=102 51.9N 138.8E -006HPA -004KT
T=108 52.3N 139.8E -005HPA -003KT
T=114 55.4N 145.0E -003HPA -006KT
T=120 52.3N 160.4E -008HPA +008KT
T=126 52.8N 162.9E -007HPA +005KT
T=132 53.4N 165.7E -008HPA +003KT=
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