000
FZPN03 KNHC 181511
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC THU MAR 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC THU MAR 18.
24 HOUR FORECAST VALID 1200 UTC FRI MAR 19.
48 HOUR FORECAST VALID 1200 UTC SAT MAR 20.

.WARNINGS.

...GALE WARNING...
.09 HOUR FORECAST WITHIN 15N94W TO 15N95W TO 15N96W TO 16N95W TO
16N94W TO 15N94W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 
20 TO 30 KT. SEAS LESS THAN 8 FT.
.12 HOUR FORECAST LITTLE CHANGE...EXCEPT WINDS 20 TO 35 KT. SEAS
8 TO 10 FT.
.24 HOUR FORECAST WITHIN 14N94W TO 14N96W TO 16N95W TO 16N94W 
TO 14N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 30
TO 40 KT. SEAS 10 TO 14 FT. ELSEWHERE WITHIN 13N94W TO 12N95W 
TO 11N98W TO 16N96W TO 16N94W TO 13N94W N TO NE WINDS 20 TO 30 
KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST WITHIN 14N94W TO 14N95W TO 14N96W TO 16N96W TO
16N95W TO 14N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE 
WINDS 30 TO 40 KT. SEAS 10 TO 15 FT. ELSEWHERE WITHIN 11N95W TO
10N100W TO 13N99W TO 16N96W TO 16N94W TO 11N95W N TO NE WINDS 20
TO 30 KT. SEAS 8 TO 13 FT.

.SYNOPSIS AND FORECAST.

.COLD FRONT FROM 30N130W TO 24N140W. WITHIN 29N137W TO 27N140W 
TO 30N140W TO 30N136W TO 29N137W WINDS 20 KT OR LESS. SEAS 8 TO 
13 FT IN NW SWELL.
.24 HOUR FORECAST COLD FRONT FROM 30N127W TO 21N140W. WITHIN 
27N130W TO 20N140W TO 30N140W TO 30N126W TO 27N130W WINDS 20 KT 
OR LESS. SEAS 8 TO 12 FT IN NW SWELL.
.48 HOUR FORECAST DISSIPATING COLD FRONT FROM 30N120W TO 22N137W. 
WITHIN 29N114W TO 28N114W TO 29N115W TO 30N116W TO 29N115W TO 
29N114W NW WINDS 20 TO 25 KT. SEAS TO 8 FT. WITHIN 20N127W TO 
06N126W TO 06N140W TO 30N140W TO 30N116W TO 20N127W WINDS 20 KT 
OR LESS. SEAS 8 TO 12 FT IN NW TO N SWELL.

.WITHIN 08N129W TO 09N134W TO 08N140W TO 11N137W TO 10N129W TO
08N129W WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED SWELL.
.24 HOUR FORECAST WITHIN 07N122W TO 06N133W TO 10N140W TO 
09N131W TO 10N123W TO 07N122W WINDS 20 KT OR LESS. SEAS 8 FT IN
MIXED SWELL.
.48 HOUR FORECAST CONDITIONS MERGED.

.24 HOUR FORECAST WITHIN 10N86W TO 10N88W TO 11N88W TO 11N86W TO
10N86W...INCLUDING THE GULF OF PAPAGAYO...NE WINDS 20 TO 25 KT. 
SEAS LESS THAN 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

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

CONVECTION VALID AT 1500 UTC THU MAR 18...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
TROUGH FROM LOW PRES NEAR 09N76W TO 05N87W. ITCZ FROM 05N87W TO 
02N108W TO 03N120W TO 04N140W. SCATTERED MODERATE ISOLATED 
STRONG FROM 04N TO 09N BETWEEN 77W AND 84W...FROM 00N TO 05N 
BETWEEN 100W AND 109W...FROM 04N TO 06N BETWEEN 114W AND 121W... 
AND FROM 02N TO 04N BETWEEN 128W AND 134W. SCATTERED MODERATE 
FROM 00N TO 02N BETWEEN 79W AND 83W...AND FROM 06N TO 08N 
BETWEEN 122W AND 129W.

$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.