000
FZPN03 KNHC 132107
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC THU OCT 13 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC THU OCT 13.
24 HOUR FORECAST VALID 1800 UTC FRI OCT 14.
48 HOUR FORECAST VALID 1800 UTC SAT OCT 15.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM IRWIN NEAR 18.6N 106.5W 1003 MB AT 2100 UTC OCT
13 MOVING E OR 090 DEG AT 5 KT. MAXIMUM SUSTAINED WINDS 35 KT 
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 30 NM S 
SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 60 NM NE QUADRANT...180 
NM SE QUADRANT...150 NM SW QUADRANT...AND 30 NM NW QUADRANT WITH 
SEAS TO 17 FT.
.24 HOUR FORECAST TROPICAL STORM IRWIN NEAR 17.5N 105.7W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE 
WINDS WITHIN 30 NM W SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 
120 NM W AND 30 NM E SEMICIRCLES WITH SEAS TO 16 FT.
.48 HOUR FORECAST TROPICAL STORM IRWIN NEAR 15.5N 106.1W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE
WINDS WITHIN 30 NM E SEMICIRCLE AND 45 NM W SEMICIRCLE. SEAS 12 
FT OR GREATER WITHIN 150 NM W AND 60 NM E SEMICIRCLES WITH SEAS 
TO 15 FT.
.72 HOUR FORECAST TROPICAL STORM IRWIN NEAR 14.5N 107.5W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM IRWIN NEAR 14.5N 108.5W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT.
.120 HOUR FORECAST TROPICAL STORM IRWIN NEAR 14.5N 109.5W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT.

.SYNOPSIS AND FORECAST.

.EXCEPT AS NOTED IN IRWIN WARNINGS...WITHIN 180 NM S AND 60 NM N 
SEMICIRCLES OF CENTER WINDS 20 TO 33 KT. SEAS 9 TO 14 FT. 
ELSEWHERE FROM 10N TO 18N BETWEEN 100W AND 110W SW TO W WINDS 20 
KT. SEAS 9 TO 14 FT PRIMARILY IN SW SWELL. REMAINDER OF AREA S 
OF 20N BETWEEN 100W AND 135W WINDS LESS THAN 20 KT. SEAS 8 TO 11 
FT IN MERGING NW AND SW SWELL.
.24 HOUR FORECAST EXCEPT AS NOTED IN IRWIN WARNINGS...WITHIN 150 
NM W AND 60 NM E SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. 
ELSEWHERE FROM 08N TO 17N BETWEEN 100W AND 110W W TO NW WINDS 20 
KT. SEAS 8 TO 11 FT IN MERGING NW AND SW SWELL. REMAINDER OF 
AREA S OF 20N BETWEEN 100W AND 132W WINDS LESS THAN 20 KT. SEAS 
8 TO 11 FT IN MERGING NW AND SW SWELL.
.48 HOUR FORECAST EXCEPT AS NOTED IN IRWIN WARNINGS...WITHIN 180 
NM W AND 90 NM E SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. 
ELSEWHERE FROM 05N TO 15N BETWEEN 100W AND 110W W TO NW WINDS 20 
KT. SEAS 8 TO 10 FT IN MERGING NW AND SW SWELL. REMAINDER OF 
AREA S OF 20N BETWEEN 100W AND 130W WINDS LESS THAN 20 KT. SEAS 
8 TO 10 FT IN MERGING NW AND SW SWELL.

.LOW PRES 1010 MB NEAR 09N127W. S OF 08N BETWEEN 120W AND 130W S 
TO SW WINDS 20 KT. SEAS 8 TO 10 FT IN MERGING NW AND SW SWELL. 
.24 HOUR FORECAST LOW PRES 1009 MB NEAR 11N124W. WITHIN 180 NM 
SE SEMICIRCLE WINDS 20 KT. SEAS 8 TO 11 FT PRIMARILY IN NW SWELL.
.48 HOUR FORECAST LOW PRES 1009 MB NEAR 12N118W WITHIN 150 NM SE 
SEMICIRCLE WINDS 20 KT. SEAS 8 TO 10 FT PRIMARILY IN NW SWELL.

.N OF 07N E OF 100W W TO NW WINDS 20 TO 30 KT. SEAS 9 TO 13 FT 
IN SW SWELL. 
.24 HOUR FORECAST GULF OF TEHUANTEPEC N WINDS 20 TO 25 KT. SEAS 
8 TO 11 FT. ELSEWHERE N OF 05N E OF 100W W TO NW WINDS 20 TO 25 
KT. SEAS 9 TO 13 FT IN SW SWELL. S OF 05N E OF 100W WINDS LESS 
THAN 20 KT. SEAS 8 TO 10 FT IN SW SWELL. 
.48 HOUR FORECAST GULF OF TEHUANTEPEC NW TO N WINDS 20 TO 25 KT. 
SEAS 8 TO 11 FT. ELSEWHERE N OF 05N E OF 105W SW TO W WINDS 20 
TO 30 KT. SEAS 9 TO 14 FT IN SW SWELL.

.N OF 28N BETWEEN 125W AND 132W N WINDS 20 KT. SEAS 9 TO 11 FT 
IN NW SWELL. ELSEWHERE N OF 20N W OF 110W WINDS LESS THAN 20 KT. 
SEAS 8 TO 11 FT IN NW SWELL. 
.24 HOUR FORECAST COLD FRONT FROM 30N135W TO 26N140W. NW OF 
FRONT NW TO N WINDS 20 KT. SEAS TO 9 FT. N OF 20N BETWEEN 110W 
AND 132W WINDS LESS THAN 20 KT. SEAS 8 TO 10 FT IN NW SWELL.
.36 HOUR FORECAST LOW PRES N OF AREA NEAR 31N138W. N OF 28N W OF 
136W W TO NW WINDS 20 TO 25 KT. SEAS 9 TO 14 FT IN NW SWELL. 
ELSEWHERE N OF 20N BETWEEN 108W AND 125W WINDS LESS THAN 20 KT. 
SEAS 8 TO 10 FT IN NW SWELL. 
.48 HOUR FORECAST LOW PRES N OF AREA NEAR 31N137W. N OF 27N W OF 
136W W TO NW WINDS 20 TO 25 KT. SEAS 9 TO 15 FT IN NW SWELL. 
ELSEWHERE N OF 20N BETWEEN 108W AND 120W WINDS LESS THAN 20 KT. 
SEAS 8 TO 10 FT IN NW SWELL.

.REMAINDER OF AREA WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT.

CONVECTION VALID AT 2015 UTC THU OCT 13...
.TROPICAL STORM IRWIN...SCATTERED MODERATE WITHIN 120 NM NE AND 
NW QUADRANTS.

.NUMEROUS MODERATE TO ISOLATED STRONG FROM 12N TO 15N BETWEEN 
92W AND 95W. SCATTERED MODERATE ELSEWHERE FROM 12N TO 15N 
BETWEEN 90W AND 99W. ISOLATED MODERATE FROM 12N TO 15N BETWEEN 
101W AND 106W.   

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH OVER PARTS OF NORTHERN CENTRAL AMERICA AND SE 
MEXICO THEN RESUMES W OF T.S. IRWIN FROM 13N114W TO LOW PRES 
NEAR 09N127W TO 08N140W. NO DEEP CONVECTION IN ASSOCIATION WITH 
THE MONSOON TROUGH W OF 114W.

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.