000
FZPN03 KNHC 022141
HSFEP2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL 
2230 UTC FRI AUG 02 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC FRI AUG 02.
24 HOUR FORECAST VALID 1800 UTC SAT AUG 03.
48 HOUR FORECAST VALID 1800 UTC SUN AUG 04.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM GIL AT 14.6N 129.4W 992 MB AT 2100 UTC AUG 02
MOVING W OR 270 DEG AT 8 KT.  MAXIMUM SUSTAINED WIND 60 GUSTS
75 KT.  TROPICAL STORM FORCE WIND WITHIN 50 NM N AND 30 NM S
SEMICIRCLES.  SEAS 12 FT OR GREATER WITHIN 120 NM N AND 75 NM S
SEMICIRCLES WITH SEAS TO 21 FT.  ELSEWHERE WITHIN 180 NM N AND
120 NM S SEMICIRCLES  WINDS TO 33 KT.  SEAS TO 12 FT. 
.24 HOUR FORECAST  TROPICAL STORM GIL NEAR 14.7N 132.0W. MAXIMUM
SUSTAINED WIND 55 GUSTS 65 KT.  LITTLE CHANGE IN RADIUS OF
TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER.  ELSEWHERE
WITHIN 150 NM N AND 90 NM S SEMICIRCLES  WINDS TO 33 KT.
SEAS TO 12 FT. 
.48 HOUR FORECAST TROPICAL STORM GIL NEAR 14.5N 135.0W. MAXIMUM
SUSTAINED WINDS 45 KT GUSTS 55 KT. LITTLE CHANGE IN RADIUS OF
TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER.  ELSEWHERE 
WITHIN 120 NM N AND 75 NM S SEMICIRCLES  WINDS TO 33 KT.
SEAS TO 12 FT. 
.72 HOUR FORECAST TROPICAL STORM GIL NEAR 14.0N 138.0W.
MAXIMUM SUSTAINED WIND 40 GUSTS 50 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL DEPRESSION GIL NEAR 13.5N 141.0W.
MAXIMUM SUSTAINED WIND 30 GUSTS 40 KT.
.120 HOUR FORECAST TROPICAL DEPRESSION GIL NEAR 13.5N 144.5W.
MAXIMUM SUSTAINED WIND 25 GUSTS 35 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 1009 MB.  WITHIN 60 NM OF CENTER  WINDS 20
TO 25 KT.  SEAS TO 9 FT. 
.24 HOUR FORECAST  LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
13N122W 1008 MB.  WITHIN 60 NM OF CENTER WINDS 20 TO 25 KT.
SEAS TO 9 FT. 
.48 HOUR FORECAST  LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
13N125W 1008 MB.  WITHIN 60 NM OF CENTER WINDS 20 TO 25 KT.
SEAS TO 9 FT. 
 
.FROM 08N TO 20N W OF 135W  WINDS 20 KT OR LESS. 
SEAS TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST  FROM 11N TO 21N W OF 128W WINDS 20 KT OR LESS.
SEAS TO 9 FT IN MIXED SWELL.
.48 HOUR FORECAST  FROM 14N TO 20N W OF 138W WINDS 20 KT OR LESS.
SEAS TO 8 FT IN MIXED SWELL.

.CONVECTION VALID 2100 UTC FRI AUG 02...

.TROPICAL STORM GIL...NUMEROUS MODERATE TO STRONG WITHIN 120 NM
NW QUADRANT OF CENTER. 

.LOW PRES CENTER 1009 MB AT 13N120W...SCATTERED MODERATE TO
ISOLATED STRONG CONVECTION WITHIN 90 NM S SEMICIRCLE OF CENTER.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...                
MONSOON TROUGH EXTENDS FROM 10N85W TO 08N93W TO 1009 MB LOW PRES 
AT 13N120W.  ITCZ  FROM 13N133W TO BEYOND 11N140W.  SCATTERED
MODERATE CONVECTION WITHIN 120 NM S OF AXIS E OF 88W AND ISOLATED
MODERATE WITHIN 150 NM S OF AXIS W OF 103W.

$$
.FORECASTER WALLY BARNES.  NATIONAL HURRICANE CENTER.