000
FZPN03 KNHC 200920
HSFEP2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC TUE SEP 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC TUE SEP 20.
24 HOUR FORECAST VALID 0600 UTC WED SEP 21.
48 HOUR FORECAST VALID 0600 UTC THU SEP 22.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST

.LOW PRES NEAR 13N97W 1009 MB. WITHIN 120 NM N SEMICIRCLE NE TO 
E WINDS 20 KT. SEAS 8 FT. ELSEWHERE N OF 15N BETWEEN 94W AND 96W 
INCLUDING GULF OF TEHUANTEPEC N WINDS 20 TO 25 KT. SEAS TO 9 FT. 
FROM 08N TO 11N BETWEEN 93W AND 98W S TO SW WINDS 20 KT. SEAS 
LESS THAN 8 FT.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
13N98W 1007 MB. WITHIN 120 NM N SEMICIRCLE WINDS 20 TO 25 KT. 
SEAS TO 9 FT. ELSEWHERE N OF 15N BETWEEN 94W AND 96W INCLUDING 
GULF OF TEHUANTEPEC N TO NE WINDS 20 TO 25 KT. SEAS TO 9 FT. 
FROM 03N TO 09N BETWEEN 90W AND 105W S TO SW WINDS 20 TO 25 KT. 
SEAS TO 9 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
13N99W 1005 MB. WITHIN 120 NM NW SEMICIRCLE WINDS 20 TO 25 KT. 
SEAS 8 TO 11 FT. ELSEWHERE N OF 14N BETWEEN 94W AND 96W 
INCLUDING GULF OF TEHUANTEPEC N TO NE WINDS 20 KT. SEAS 8 FT. 
WITHIN 300 NM SE SEMICIRCLE SW WINDS 20 TO 25 KT. SEAS 8 TO 11 
FT.

.MONSOON TROUGH 12N125W TO 09N140W. WITHIN 120 NM N OF TROUGH NE 
WINDS 20 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST WINDS LESS 20 KT. SEAS LESS THAN 8 FT.

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

CONVECTION VALID AT 0845 UTC TUE SEP 20...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH AXIS EXTENDS FROM 14N90W TO LOW PRES NEAR 
13N97W 1009 MB THEN ENDING NEAR 09N105W. THE MONSOON TROUGH 
RESUMES OVER THE PACIFIC AT 16N110W TO LOW PRES NEAR 12N120W 
1010 MB TO LOW PRES NEAR 11N135W 1011 MB TO 09N140W. SCATTERED 
MODERATE CONVECTION NOTED WITHIN 180 NM S OF TROUGH AXIS BETWEEN 
85W AND 95W...AND OVER FORECAST WATERS WITHIN 240 NM N OF AXIS 
BETWEEN 90W AND 100W.

SCATTERED MODERATE ISOLATED STRONG CONVECTION ALSO WITHIN 90 NM 
OF MEXICAN COAST FROM 18N TO 21N.

$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.