IS NOW LOCATED NEAR 22.6N 167.4E, APPROXIMATELY 205 NM NORTH-NORTH-
EAST OF WAKE ISLAND. RECENT ANIMATED ENHANCED WATER VAPOR IMAGERY
REVEALS DEEP CONVECTION HAS INCREASED IN THE EASTERN SEMICIRCLE AND
INFRARED IMAGERY SHOWS AN INCREASE OF SURFACE INFLOW INTO A DEVELOP-
ING LOW LEVEL CIRCULATION CENTER (LLCC). UPPER LEVEL ANALYSIS INDI-
CATES THE LLCC IS IN AN ENVIRONMENT OF LOW TO MODERATE VERTICAL WIND
SHEAR AND INCREASING 850 MB VORTICITY. MAXIMUM SUSTAINED SURFACE
WINDS ARE ESTIMATED AT 10 TO 15 KNOTS. MINIMUM SEA LEVEL PRESSURE IS
ESTIMATED TO BE NEAR 1008 MB. DUE TO AN INCREASE IN DEEP CONVECTION
AND IMPROVED SURFACE INFLOW, THE POTENTIAL FOR THE DEVELOPMENT OF A
SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS UPGRADED TO
FAIR.
18/1425 UTC 22.3N 166.7E T1.5/1.5 91W -- West Pacific Ocean
Like the Atlantic Ocean, the WPAC also has barometric lows that make the transition to subtropical and later to tropical stage. This is an example.






