000
FZPN03 KNHC 030246
HSFEP2

HSFEP2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL 
0430 UTC SAT AUG 03 2013

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS

SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE 
HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE 
MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.

SECURITE

E PACIFIC FROM THE EQUATOR TO 30N E OF 140W. 

SYNOPSIS VALID 0000 UTC SAT AUG 03.
24 HOUR FORECAST VALID 0000 UTC SUN AUG 04.
48 HOUR FORECAST VALID 0000 UTC MON AUG 05.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM GIL AT 14.9N 130.6W 995 MB AT 0300 UTC AUG 03
MOVING W OR 275 DEG AT 10 KT.  MAXIMUM SUSTAINED WIND 55 GUSTS
65 KT.  TROPICAL STORM FORCE WIND WITHIN 50 NM N SEMICIRCLE AND
30 NM S SEMICIRCLE.  SEAS 12 FT OR GREATER WITHIN 90 NM N 
SEMICIRCLE AND 45 NM S SEMICIRCLE WITH SEAS TO XX FT. ELSEWHERE
WITHIN 150 NM N AND 90 NM S SEMICIRCLES  WINDS TO 33 KT. 
SEAS TO 12 FT. 
.24 HOUR FORECAST  TROPICAL STORM GIL NEAR 14.8N 133.2W.
MAXIMUM SUSTAINED WIND 45 GUSTS 55 KT.  LITTLE CHANGE IN RADIUS
OF TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER.
ELSEWHERE WITHIN 120 NM N AND 60 NM S SEMICIRCLES WINDS TO 33 KT.
SEAS TO 12 FT.  
.48 HOUR FORECAST  TROPICAL STORM GIL NEAR 14.3N 136.1W.
MAXIMUM SUSTAINED WIND 40 GUSTS 50 KT.  LITTLE CHANGE IN RADIUS
OF TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER.
ELSEWHERE WITHIN 90 NM N AND 30 NM S SEMICIRCLES  WINDS TO 33 KT.
SEAS TO 12 FT.  
.72 HOUR FORECAST  TROPICAL STORM GIL NEAR 13.5N 139.0W.
MAXIMUM SUSTAINED WIND 40 GUSTS 50 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST  TROPICAL STORM GIL NEAR 13.0N 142.0W.
MAXIMUM SUSTAINED WIND 35 GUSTS 45 KT.
.120 HOUR FORECAST  TROPICAL DEPRESSION GIL NEAR 13.0N 145.0W.
MAXIMUM SUSTAINED WIND 30 GUSTS 40 KT.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

.SYNOPSIS AND FORECAST.

.LOW PRES AT 13N120W 1010 MB.  WITHIN 60 NM OF CENTER  WINDS 20
TO 25 KT.  SEAS TO 9 FT. 
.24 HOUR FORECAST  LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
13N123W 1009 MB.  WITHIN 60 NM OF CENTER  WINDS 20 TO 25 KT.
SEAS TO 9 FT. 
.48 HOUR FORECAST  LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
13N126W 1009 MB.  WITHIN 60 NM OF CENTER  WINDS 20 TO 25 KT.
SEAS TO 9 FT. 
 
.FROM 09N TO 19N W OF 135W  WINDS 20 KT OR LESS. 
SEAS TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST  FROM 09N TO 21N W OF 136W WINDS 20 KT OR LESS.
SEAS TO 9 FT IN MIXED SWELL.
.48 HOUR FORECAST  CONDITIONS MERGE WITH TROPICAL STORM GIL. 

.CONVECTION VALID 0300 UTC SAT AUG 03...

.TROPICAL STORM GIL...NUMEROUS MODERATE TO STRONG WITHIN 75 NM
N QUADRANT AND 60 NM ELSEWHERE AROUND CENTER. 

.LOW PRES CENTER 1010 MB AT 13N120W...SCATTERED MODERATE TO
ISOLATED STRONG CONVECTION WITHIN 45 NM S QUADRANT.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...                
MONSOON TROUGH EXTENDS FROM 10N85W TO 08N94W TO 1009 MB LOW PRES 
AT 13N120W.  ITCZ  FROM 13N133W TO BEYOND 12N140W.  SCATTERED
MODERATE CONVECTION WITHIN 240 NM S OF AXIS FROM 104W TO 118W
THEN WITHIN 120 NM OF AXIS TO BEYOND 140W. 

$$
.FORECASTER WALLY BARNES. NATIONAL HURRICANE CENTER.