MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI/JTWC//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN
/AND SOUTH PACIFIC OCEANS REISSUED/301400-310600ZMAR2007//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
A. TROPICAL CYCLONE SUMMARY: NONE.
B. TROPICAL DISTURBANCE SUMMARY:
(1) AN AREA OF CONVECTION HAS PERSISTED NEAR 6.1N 158.1E,
APPROXIMATELY 45 NM SOUTH OF POHNPEI. THIS CONVECTION IS ASSOCIATED
WITH AN AREA OF ELONGATED LOW-LEVEL TROUGHING, AS THE TROUGH AXIS
EXTENDS WEST-TO-EAST ALONG 5N (JUST SOUTH OF CHUUK TO JUST SOUTH OF
POHNPEI). ANIMATED ENHANCED INFRARED IMAGERY AND A 300912Z SSMIS PASS
REVEAL A DEVELOPING LOW LEVEL CIRCULATION AT THE EASTERN END OF THIS
TROUGH. IN FACT, POHNPEI (PTTP) HAS REPORTED 24-HOUR PRESSURE FALLS
AROUND THREE MILLIBARS. THE DISTURBANCE LIES BENEATH THE DIFFLUENT
SOUTHWESTERN QUADRANT OF AN UPPER-LEVEL, NEAR-EQUATORIAL RIDGE; VERTICAL
WIND SHEAR VALUES ARE ASSESSED AS LOW TO MODERATE (10 TO 15 KNOTS).
MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 10 TO 15 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 IS POOR.
(2) NO OTHER SUSPECT AREAS.
2. SOUTH PACIFIC AREA (WEST COAST OF SOUTH AMERICA TO 135 EAST):
A. TROPICAL CYCLONE SUMMARY: NONE.
B. TROPICAL DISTURBANCE SUMMARY: NONE.
3. JUSTIFICATION FOR REISSUE: ADDED PARA 1.B.(1) POOR AREA.
FORECAST TEAM: ALPHA//
That SSMIS pass in question:
Looking interesting.
