000
FZPN03 KNHC 202105
HSFEP2

HIGH SEAS FORECAST
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 
2230 UTC MON SEP 20 2010

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 MON SEP 20.
24 HOUR FORECAST VALID 1800 UTC TUE SEP 21.
48 HOUR FORECAST VALID 1800 UTC WED SEP 22.

.WARNINGS.
...GALE WARNING...
.LOW PRES NEAR 20N108W 1001 MB MOVING NW 7 KT. WITHIN 90 NM OF 
LOW CENTER WINDS 25 TO 35 KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
22N110W 1003 MB. WITHIN 60 NM OF LOW CENTER WINDS 25 TO 35 KT. 
SEAS 8 TO 10 FT.
.48 HOUR FORECAST WINDS BELOW GALE FORCE. 
 
.SYNOPSIS AND FORECAST.
.EXCEPT AS NOTED IN WARNINGS SECTION...FROM 08N TO 18N BETWEEN 
100W AND 110W SW TO W WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST...EXCEPT AS NOTED IN WARNINGS SECTION... 
WITHIN 120 NM E SEMICIRCLE WINDS 20 TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE... 
23N111W 1005 MB. WITHIN 60 NM OF LOW CENTER WINDS 20 TO 30 KT. 
SEAS TO 9 FT.  

.LOW PRES NEAR 13N124W 1008 MB MOVING NE 5 KT. TROUGH FROM LOW 
CENTER TO 12N135W. WITHIN 60 NM OF LOW CENTER WINDS WINDS 20 TO 
25 KT. SEAS 8 TO 10 FT. ELSEWHERE FROM 08N TO 13N BETWEEN 110W 
AND 135W AND E OF TROUGH SW TO W WINDS 20 TO 25 KT. SEAS 8 T0 10 
FT.
.24 HOUR LOW PRES 14N121W 1008 MB. TROUGH FROM LOW CENTER TO 
12N130W. WITHIN 60 NM OF LOW CENTER WINDS 20 TO 25 KT. SEAS 8 TO 
10 FT. ELSEWHERE FROM 09N TO 14N BETWEEN 105W AND 130W AND E OF 
TROUGH SW TO W WINDS 20 TO 25 KT. SEAS 8 TO 12 FT IN SW SWELL.
.48 HOUR FORECAST TROUGH FROM 14N114W TO 12N125W. FROM 08N TO 
14N E OF TROUGH TO 95W SW TO W WINDS 20 TO 25 KT. SEAS 8 TO 12 
FT IN SW SWELL. FROM 09N TO 14N W OF TROUGH TO 125W W TO NW 
WINDS 20 KT. SEAS 8 FT.

.N OF 24N BETWEEN 116W AND 121W NW TO N WINDS 20 TO 25 KT. SEAS 
TO 9 FT. FROM 20N TO 24N BETWEEN 114W AND 121W WINDS LESS THAN 
20 KT. SEAS TO 8 FT IN NW SWELL.
.24 HOUR FORECAST N OF 20N BETWEEN 115W AND 119W WINDS LESS THAN 
20 KT. SEAS TO 8 FT IN NW SWELL.
.48 HOUR FORECAST FROM 14N TO 23N BETWEEN 110W AND 119W WINDS 
LESS THAN 20 KT. SEAS TO 8 FT IN NW SWELL.

.N OF 27N W OF 138W WINDS LESS THAN 20 KT. SEAS TO 8 FT IN NW 
SWELL.
.12 HOUR FORECAST WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT.

.24 HOUR FORECAST FROM 14N TO 20N W OF 130W WINDS LESS THAN 20 
KT. SEAS TO 8 FT IN PRIMARILY NW SWELL.
.48 HOUR FORECAST LITTLE CHANGE.

.24 HOUR FORECAST GULF OF CALIFORNIA N OF 28N SE TO S WINDS 20 
KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

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

CONVECTION VALID AS OF 2100 UTC MON SEP 20...

.SCATTERED MODERATE TO ISOLATED STRONG FROM 10N TO 13N BETWEEN 
91W AND 95W.  

.LOW PRES 20N108W...SCATTERED MODERATE TO STRONG WITHIN 120 NM W 
SEMICIRCLE.

INTERTROPICAL CONVERGENCE ZONE...MONSOON TROUGH FROM 19N110W TO 
TO LOW PRES 13N124W 1008 MB TO 11N140W. SCATTERED MODERATE WITHIN
90 NM S OF TROUGH W OF 128W.

$$
.FORECASTER GR. TROPICAL PREDICTION CENTER.