SUBJ: TROPICAL CYCLONE WARNING
REF/A/NAVPACMETOCCEN PEARL HARBOR HI/150200Z AUG 00//
AMPN/TROPICAL CYCLONE FORMATION ALERT//
WTPN31 PGTW 150900    
1. TROPICAL DEPRESSION 16W WARNING NR 001    
   02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   150600Z2 --- NEAR 33.1N7 179.7E4
     MOVEMENT PAST SIX HOURS - 025 DEGREES AT 06 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
   REPEAT POSIT: 33.1N7 179.7E4
    ---
   FORECASTS:
   12 HRS, VALID AT:
   151800Z5 --- 34.2N9 180.0E9
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   VECTOR TO 24 HR POSIT: 010 DEG/ 06 KTS
    ---
   24 HRS, VALID AT:
   160600Z3 --- 35.4N2 179.7W4
   MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
   BECOMING EXTRATROPICAL
   VECTOR TO 36 HR POSIT: 010 DEG/ 08 KTS
    ---
   36 HRS, VALID AT:
   161800Z6 --- 36.9N8 179.4W1
   MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
   EXTRATROPICAL
    ---
REMARKS:
150900Z5 POSITION NEAR 33.4N0 179.8E5.
TROPICAL DEPRESSION (TD) 16W, LOCATED APPROXIMATELY 330 NM
NORTH-NORTHWEST OF MIDWAY ISLAND, HAS TRACKED NORTH-NORTHEAST AT 06
KNOTS DURING THE PAST 6 HOURS. THE WARNING POSITION IS BASED ON
150530Z4 INFRARED SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED 
ON SATELLITE CURRENT INTENSITY ESTIMATES OF 25 KNOTS. ANIMATED 
VISIBLE SATELLITE IMAGERY DEPICTS A WELL-DEFINED LOW-LEVEL 
CIRCULATION CENTER (LLCC) WITH CONVECTION DEVELOPING OVER THE CENTER 
DURING THE PAST 10 HOURS. ANIMATED WATER VAPOR IMAGERY DEPICTS A 
MID-LATITUDE LOW NEAR 43N7 175W3 WITH ASSOCIATED TROUGH EXTENDING 
SOUTH (NORTHWEST OF THE SYSTEM). A 150554Z0 TROPICAL RAINFALL 
MEASURING MISSION PASS DEPICTS A PARTIALLY-EXPOSED, DISTINCT LLCC 
WITH DEEP CONVECTION SOUTH THROUGH WEST. UPPER-AIR ANALYSIS 
INDICATES THAT TD 16W IS SITUATED UNDER AN AREA OF UPPER-LEVEL 
DIFFLUENCE, BETWEEN THE SUBTROPICAL RIDGE TO THE WEST AND THE TROUGH 
TO THE NORTHWEST. TD 16W IS FORECAST TO TRACK SLOWLY NORTHWARD UNDER 
THE STEERING INFLUENCE OF THE LOW TO MID-LEVEL RIDGE TO THE EAST. TD 
16W IS FORECAST TO MAINTAIN INTENSITY THROUGH THE FORECAST PERIOD, 
AND IS EXPECTED TO BEGIN EXTRA-TROPICAL TRANSITION (XTT) WITHIN 12-
24 HOURS.  MAXIMUM SIGNIFICANT WAVE HEIGHT AT 150600Z2 IS 08 FEET. 
REFER TO WWPW30 RJTX FOR ADDITIONAL SEA HEIGHT INFORMATION.
THIS WARNING SUPERSEDES AND CANCELS REF A, NAVPACMETOCCEN 150200Z
AUG 00 TROPICAL CYCLONE FORMATION ALERT (WTPN21 PGTW 150200 )
NEXT WARNINGS AT 151500Z2 (DTG 151351Z6), 152100Z9 (DTG 151951Z2), 
160300Z0 (DTG 160151Z4) AND 160900Z6 (DTG 160751Z0). REFER TO 
TYPHOON 15W (EWINIAR) WARNINGS (WTPN33 PGTW) FOR SIX-HOURLY 
UPDATES.//
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