WTPS21 PGTW 201000
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE FORMATION ALERT (INVEST 94P) CANCELLATION//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/191221ZJAN2026// 
AMPN/REF A IS A TROPICAL CYCLONE FORMATION ALERT.// 
RMKS/
1. REMARKS: THIS CANCELS REF A (WTPS21 PGTW 191230). THE SYSTEM IS 
CURRENTLY CLASSIFIED AS A SUBTROPICAL CYCLONE, GENERALLY CHARACTERIZED 
AS HAVING BOTH TROPICAL AND MIDLATITUDE CYCLONE FEATURES. ANIMATED 
ENHANCED INFRARED (EIR) SATELLITE IMAGERY DEPICTS INVEST 94P WITH A 
HIGHLY ELONGATED CIRCULATION AND CONVECTION DISPLACED FAR TO THE SOUTH 
AND NORTH OF THE CENTER. THE CENTER HAS BECOME IRREGULAR AND ILL-DEFINED 
OVER THE PAST 6 HOURS AS THE SYSTEM QUICKLY ACCELERATES POLEWARD. 
ENVIRONMENTAL ANALYSIS INDICATES THAT 94P IS IN AN UNFAVORABLE 
ENVIRONMENT FOR DEVELOPMENT CHARACTERIZED BY STRONG POLEWARD OUTFLOW 
AND LOW TO MODERATE (15-20 KTS) VERTICAL WIND SHEAR, GREATLY OFFSET BY 
SIGNIFICANT DRY AIR ENTRAINMENT FROM THE WEST AND MARGINAL (25-26 C) 
SEA SURFACE TEMPERATURES. GLOBAL MODELS AGREE ON 94P CONTINUING TO 
TRACK QUICKLY SOUTHEASTWARD OVER THE NEXT 24 HOURS WITH AN ASYMMETRIC 
WIND FIELD. FOR HAZARDS AND WARNINGS, REFERENCE THE FLEET WEATHER CENTER 
SAN DIEGO HIGH WINDS AND SEAS PRODUCT OR REFER TO LOCAL WMO DESIGNATED 
FORECAST AUTHORITY. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 30 
TO 35 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 989 MB. 
THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE 
WITHIN THE NEXT 24 HOURS IS DOWNGRADED TO LOW.// 
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