000
FZPN03 KNHC 210304
HSFEP2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC FRI SEP 21 2012

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 FRI SEP 21.
24 HOUR FORECAST VALID 0000 UTC SAT SEP 22.
48 HOUR FORECAST VALID 0000 UTC SUN SEP 23.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW PRES AT 14N103W 1007 MB. WITHIN 30 NM NE QUADRANT WINDS 
20 KT OR LESS. SEAS TO 8 FT.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...14N106W 
1006 MB. WITHIN 120 NM OF CENTER WINDS 20 TO 30 KT. SEAS TO 
10 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
15N109W 1004 MB. WITHIN 180 NM OF CENTER WINDS 25 TO 30 KT. 
SEAS TO 11 FT. ELSEWHERE FROM 07N TO 13N BETWEEN 102W AND 
112W SW WINDS 20 TO 25 KT. SEAS TO 10 FT. 

.LOW PRES...REMNANTS OF LANE...1015 MB AT 21N136W WITH WEAK 
TROUGH FROM 24N136W TO 19N137W. WITHIN 150 NM NW QUADRANT OF 
LOW PRES NE WINDS 20 TO 25 KT. SEAS TO 9 FT.
.24 HOUR FORECAST TROUGH 23N139W TO 19N140W. W OF TROUGH 
NE WINDS 20 KT OR LESS. SEAS TO 8 FT.
.36 HOUR FORECAST TROUGH DISSIPATED. WINDS 20 KT OR LESS. 
SEAS LESS THAN 8 FT. 

.N OF 26N FROM 120W TO 125W N WINDS 20 TO 25 KT. SEAS 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. 

.WITHIN 30 NM OF LINE 16N95W TO 14N96W TO 14N101W INCLUDING 
GULF OF TEHUANTEPEC...NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST WITHIN 45 NM OF LINE 16N95W TO 14N97W 
INCLUDING GULF OF TEHUANTEPEC...NE TO E WINDS 20 TO 25 KT. 
SEAS TO 10 FT.
.48 HOUR FORECAST WITHIN 30 NM OF LINE 16N95W TO 14N97W 
INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 25 KT. 
SEAS TO 9 FT.

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

CONVECTION VALID AT 0300 FRI SEP 21...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N84W TO 1007 MB LOW PRES 14N103W TO 
11N125W THEN ITCZ TO 09N133W TO BEYOND 07N140W. SCATTERED 
MODERATE ISOLATED STRONG CONVECTION WITHIN 150 NM N SEMICIRCLE 
OF LOW PRES CENTER AT 14N103W. SCATTERED MODERATE CONVECTION 
WITHIN 120 NM S OF AXIS FROM 128W TO 138W. 

$$
.FORECASTER WALLY BARNES. NATIONAL HURRICANE CENTER.