ABPW10 PGTW 081330
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND
/SOUTH PACIFIC OCEANS REISSUED/081330Z-090600ZJUN2020//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
A. TROPICAL CYCLONE SUMMARY: NONE.
B. TROPICAL DISTURBANCE SUMMARY:
(1) AN AREA OF CONVECTION (INVEST 98W) HAS PERSISTED NEAR
10.0N 131.7E, APPROXIMATELY 235 NM NORTHWEST OF PALAU. ANIMATED
ENHANCED INFRARED SATELLITE IMAGERY AND A 080758Z SSMIS 91GHZ
MICROWAVE IMAGE DEPICT A LOW LEVEL CIRCULATION WITH WEAK, FRAGMENTED
FORMATIVE BANDING TO THE SOUTH. RECENT ASCAT IMAGERY INDICATES A
DEFINED CIRCULATION WITH 20-25 KNOT EASTERLIES OVER THE NORTH
QUADRANT AND 5-10 KNOT WINDS ELSEWHERE. INVEST 98W IS IN A FAVORABLE
ENVIRONMENT FOR DEVELOPMENT WITH LOW (<15KTS) VERTICAL WIND SHEAR,
GOOD EQUATORWARD OUTFLOW, AND WARM (28-30C) SEA SURFACE
TEMPERATURES. GLOBAL MODELS ARE IN GENERAL AGREEMENT THAT INVEST 98W
WILL CONTINUE TO CONSOLIDATE AS IT TRACKS NORTHWESTWARD, CROSSES
LUZON, AND FURTHER INTENSIFIES IN THE SOUTH CHINA SEA. MAXIMUM
SUSTAINED SURFACE WINDS ARE ESTIMATED AT 15 TO 20 KNOTS. MINIMUM SEA
LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1006 MB. THE POTENTIAL FOR
THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24
HOURS IS LOW.
ABPW10 PGTW 091830
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND
/SOUTH PACIFIC OCEANS REISSUED/091830Z-100600ZJUN2020//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
A. TROPICAL CYCLONE SUMMARY: NONE.
B. TROPICAL DISTURBANCE SUMMARY:
(1) THE AREA OF CONVECTION (INVEST 98W) PREVIOUSLY LOCATED
NEAR 10.0N 131.7E IS NOW LOCATED NEAR 11.1N 126.3E, APPROXIMATELY
192 NM SOUTHEAST OF LEGAZPI, PHILIPPINES. ANIMATED ENHANCED
INFRARED SATELLITE IMAGERY AND 091237Z ASCAT-B DATA DEPICT A
CONSOLIDATING LOW LEVEL CIRCULATION CENTER (LLCC) WITH POCKETS OF
DEEP CONVECTION OVER THE WESTERN PERIPHERY. INVEST 98W IS IN A
FAVORABLE ENVIRONMENT FOR DEVELOPMENT WITH LOW (<15KTS) VERTICAL
WIND SHEAR, MODERATE EQUATORWARD OUTFLOW, AND WARM (28-30C) SEA
SURFACE TEMPERATURES. GLOBAL MODELS ARE IN FAIR AGREEMENT THAT
INVEST 98W WILL CONTINUE TO CONSOLIDATE AS IT TRACKS NORTH-
NORTHWESTWARD AND ULTIMATELY CROSSES LUZON, ENTERING INTO THE SOUTH
CHINA SEA BY TAU 96. MODEL SOLUTIONS DIVERGE THEREAFTER WITH GFS
PROVIDING FURTHER INTENSIFICATION INTO A TROPICAL STORM WHILE ECMWF,
UKMET AND NAVGEM DO NOT. MAXIMUM SUSTAINED SURFACE WINDS ARE
ESTIMATED AT 15 TO 20 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED
TO BE NEAR 1008 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A
SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS UPGRADED TO
MEDIUM.