000
FZPN03 KNHC 182120
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC SAT DEC 18 2021

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 AND 03.4S TO THE
EQUATOR E OF 120W

SYNOPSIS VALID 1800 UTC SAT DEC 18.
24 HOUR FORECAST VALID 1800 UTC SUN DEC 19.
48 HOUR FORECAST VALID 1800 UTC MON DEC 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FROM 12N TO 18N W OF 125W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 
11 FT IN MIXED NW AND NE SWELL. ELSEWHERE FROM 09N TO 23N W OF 
120W...AND FROM 20N TO 25N BETWEEN 115W AND 120W WINDS 20 KT OR 
LESS. SEAS 8 TO 9 FT IN NW TO N SWELL.
.24 HOUR FORECAST FROM 07N TO 18N W OF 130W...AND FROM 10N TO 
15N BETWEEN 121W AND 130W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT 
IN MIXED NW AND NE SWELL.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.06 HOUR FORECAST FROM 10N TO 11N E OF 88W...INCLUDING THE 
GULF OF PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.30 HOUR FORECAST FROM 10N TO 11N E OF 88W...INCLUDING THE GULF 
OF PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

.GULF OF CALIFORNIA N OF 27N NW TO N WINDS 20 TO 25 KT...EXCEPT 
25 TO 30N N OF 30N W OF 114W. SEAS TO 8 FT N OF 29N.
.12 HOUR FORECAST GULF OF CALIFORNIA N OF 26N NW TO N WINDS 20 
TO 25 KT. SEAS LESS THAN 8 FT.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.30 HOUR FORECAST COLD FRONT FROM 30N135W TO 28N140W. NW OF 
FRONT NW WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.
.42 HOUR FORECAST COLD FRONT FROM 30N133W TO 25N140W. NW OF 
FRONT NW WINDS 20 TO 25 KT. SEAS 8 TO 12 FT IN NW SWELL. N OF 
28N E OF FRONT TO A LINE FROM 30N128W TO 28N132W SW WINDS 20 TO 
25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST COLD FRONT FROM 30N131W TO 23N140W. NW OF 
FRONT NW WINDS 20 TO 25 KT. SEAS 8 TO 12 FT IN NW SWELL. N OF 
27N E OF FRONT TO 127W S TO SW WINDS 20 TO 25 KT. SEAS TO 8 FT.

.30 HOUR FORECAST N OF 14.5N BETWEEN 95.5W AND 96.5W...INCLUDING 
THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS LESS THAN 8 
FT.
.42 HOUR FORECAST N OF 13N BETWEEN 94W AND 96W...INCLUDING THE 
GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS BUILDING TO 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

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

CONVECTION VALID AT 2100 UTC SAT DEC 18...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

HE MONSOON TROUGH EXTENDS FROM SOUTHERN COSTA RICA NEAR 09N83W 
TO 08N95W TO 1010 LOW PRESSURE LOCATED NEAR 10N109W TO 09N115W. 
THE ITCZ CONTINUES FROM 09N115W TO 09N127W TO 11N140W. SCATTERED 
MODERATE TO ISOLATED STRONG CONVECTION IS NOTED FROM 10N-15N 
BETWEEN 100W-112W...FROM 07N-13N BETWEEN 116W-126W...AND FROM 
07N-10N BETWEEN 130W-136W.

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.