226 
FZPN03 KNHC 182107
HSFEP2


HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC THU FEB 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 THU FEB 18.
24 HOUR FORECAST VALID 1800 UTC FRI FEB 19.
48 HOUR FORECAST VALID 1800 UTC SAT FEB 20.

.WARNINGS.

...GALE WARNING...
.18 HOUR FORECAST N OF 15N BETWEEN 94W AND 96W...INCLUDING THE 
GULF OF TEHUANTEPEC... N WINDS 20 TO 30 KT. SEAS BUILDING TO 8 
FT.
.24 HOUR FORECAST N OF 14N BETWEEN 94W AND 96W...INCLUDING THE 
GULF OF TEHUANTEPEC... N WINDS 30 TO 45 KT. SEAS 10 TO 15 FT. 
ELSEWHERE N OF 13N BETWEEN 93W AND 97W N TO NE WINDS 20 TO 30 
KT.  SEAS 8 TO 10 FT.
.48 HOUR FORECAST N OF 13N BETWEEN 94W AND 96W...INCLUDING THE 
GULF OF TEHUANTEPEC... N WINDS 30 TO 45 KT. SEAS 13 TO 20 FT. 
ELSEWHERE WITHIN 11N95W TO 11N97W TO 13N99W TO 16N95W TO 15N93W 
TO 11N95W N TO NE WINDS 20 TO 30 KT. SEAS 11 TO 18 FT IN N TO NE 
SWELL. REMAINDER OF AREA N OF 08N BETWEEN 92W AND 102W WINDS 
LESS THAN 20 KT. SEAS 8 TO 11 FT IN N TO NE SWELL.

.SYNOPSIS AND FORECAST.

.N OF 20N E OF 125W WINDS LESS THAN 20 KT. SEAS 8 TO 10 FT IN NW 
SWELL.
.24 HOUR FORECAST BETWEEN 22N AND 27N BETWEEN 114W AND 121W N TO 
NE WINDS 20 KT OR LESS. SEAS 8 FT IN W SWELL.
.36 HOUR FORECAST WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT.

.FROM 07N TO 11N W OF 131W NE WINDS 20 KT OR LESS. SEAS 8 FT IN 
NW SWELL.
.24 HOUR FORECAST FROM 04N TO 11N W OF 136W NE WINDS 20 KT OR 
LESS. SEAS 8 FT IN NW SWELL.
.48 HOUR FORECAST FROM 06N TO 12N W OF 135W NE WINDS 20 KT OR 
LESS. SEAS 8 FT IN NW SWELL.

.FROM 11N TO 12N BETWEEN 86W AND 88W..INCLUDING THE GULF OF 
PAPAGAYO... NE TO E WINDS 20 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE
.48 HOUR FORECAST FROM 10N TO 11N BETWEEN 86W AND 88W..INCLUDING 
THE GULF OF PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. 
ELSEWHERE WITHIN 11N86W TO 08N85W TO 08N91W TO 10N90W TO 12N86W 
NE WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NE SWELL.

.N OF 30N BETWEEN 113W AND 115W..INCLUDING THE GULF OF 
CALIFORNIA... N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST FROM 24N TO 29N BETWEEN 109W AND 
112W...INCLUDING THE GULF OF CALIFORNIA...NW TO N WINDS 20 TO 30 
KT. SEAS 8 FT OR LESS.
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.48 HOUR FORECAST NW OF LINE FROM 30N118W TO 25N130W TO 21N140W 
N TO NE WINDS 20 KT. SEAS 8 FT OR LESS.

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

CONVECTION VALID AT 1515 UTC THU FEB 18...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH FROM 07N78W TO 04N85W TO 02N99W. ITCZ FROM 02N99W 
TO 07N115W TO 03N135W TO 04N140W. SCATTERED MODERATE FROM 06N TO 
11N BETWEEN 108W AND 116W.

$$
.FORECASTER . NATIONAL HURRICANE CENTER.