000
FZPN03 KNHC 201449
HSFEP2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC SAT AUG 20 2011

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC SAT AUG 20.
24 HOUR FORECAST VALID 1200 UTC SUN AUG 21.
48 HOUR FORECAST VALID 1200 UTC MON AUG 22.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM GREG NEAR 19.7N 120.0W 1004 MB AT 1500 UTC AUG
20 MOVING W OR 275 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 35 KT
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 55 NM N
SEMICIRCLE...45 NM SE QUADRANT AND 35 NM SW QUADRANT.  SEAS 12
FT OR GREATER WITHIN 120 NM N SEMICIRCLE...30 NM SE QUADRANT AND
90 NM SW QUADRANT WITH SEAS TO 16 FT.
.24 HOUR FORECAST POST TROPICAL REMNANT LOW GREG NEAR 19.7N 
123.0W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. SEAS 12 FT 
WITHIN 90 NM NW SEMICIRCLE. 
.48 HOUR FORECAST POST TROPICAL REMNANT LOW GREG NEAR 19.0N 
125.8W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT. SEAS TO 11 FT.
.72 HOUR FORECAST POST TROPICAL REMNANT LOW GREG NEAR 18.0N 
128.1W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 25 KT.

.SYNOPSIS AND FORECAST.

.EXCEPT AS NOTED IN GREG WARNING...WITHIN 150 NM N AND 90 NM S 
SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. 
.24 HOUR FORECAST EXCEPT AS NOTED IN GREG WARNING...WITHIN 120 
NM NW AND 60 NM SE SEMICIRCLES WINDS 20 TO 30 KT. SEAS 8 TO 11 
FT.
.48 HOUR FORECAST WITHIN 90 NM NW SEMICIRCLE OF GREG REMNANT 
LOW WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. 

.WITHIN 180 NM SE OF LINE FROM 13N122W TO 19N118W SW WINDS 20 TO 
25 KT. SEAS 9 TO 13 FT IN SW SWELL.
.24 HOUR FORECAST WITHIN 120 NM SE OF LINE FROM 11N126W TO 
16N119W SW WINDS 20 KT. SEAS 8 TO 9 FT IN SW SWELL.
.48 HOUR FORECAST WITHIN 60 NM SE OF LINE FROM 11N127W TO 
15N122W SW WINDS 20 KT. SEAS 8 FT.

.FROM 05N TO 10N BETWEEN 100W AND 106W SW WINDS 20 KT. SEAS TO 9 
FT IN S SWELL.
.24 HOUR FORECAST FROM 08N TO 12N BETWEEN 100W AND 109W SW WINDS 
20 KT. SEAS TO 9 FT IN SW SWELL.
.48 HOUR FORECAST FROM 09N TO 12N BETWEEN 102W AND 109W SW WINDS 
20 KT. SEAS TO 9 FT IN SW SWELL.
 
.REMAINDER OF AREA WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT.

CONVECTION VALID AS OF 1500 UTC SAT AUG 20...
.TROPICAL STORM GREG...SCATTERED MODERATE WITHIN 45 NM S AND 30 
NM N SEMICIRCLES.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH INLAND ACROSS CENTRAL AMERICA THEN FROM 15N93W TO 
1008 MB LOW PRES NEAR 13N105W TO 10N110W RESUMES FROM 15N122W TO 
09N140W. SCATTERED MODERATE WITHIN 90 NM S OF TROUGH FROM 122W 
TO 129W. SCATTERED MODERATE TO ISOLATED STRONG WITHIN 75 NM SE 
OF LINE FROM 17N117W TO 15N120W. SIMILAR CONVECTION IS ALSO 
NOTED FROM 10N TO 15N BETWEEN 103W AND 110W. CLUSTER OF MODERATE 
TO STRONG CONVECTION OVER THE GULF OF TEHUANTEPEC AND WITHIN 120 
NM S OF MONSOON TROUGH FROM 93W TO 96W.

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.