340
FZPN03 KNHC 181544
HSFEP2
HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC THU DEC 18 2025
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 DEC 18.
24 HOUR FORECAST VALID 1200 UTC FRI DEC 19.
48 HOUR FORECAST VALID 1200 UTC SAT DEC 20.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.WITHIN 30N118W TO 30N124W TO 29N124W TO 28N122W TO 28N119W TO
30N118W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN W TO NW SWELL.
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.WITHIN 15N133W TO 17N136W TO 17N140W TO 08N140W TO 12N133W TO
15N133W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN E SWELL.
.24 HOUR FORECAST WITHIN 11N136W TO 13N137W TO 13N140W TO
07N140W TO 07N138W TO 09N136W TO 11N136W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN NE TO E SWELL.
.30 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
2.5 TO 3.0 M IN NE TO E SWELL.
.30 HOUR FORECAST WITHIN 15N94W TO 16N95W TO 16N96W TO 15N97W TO
14N96W TO 14N95W TO 15N94W...INCLUDING THE GULF OF
TEHUANTEPEC... NE WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST WITHIN 16N94W TO 16N96W TO 13N98W TO 12N98W TO
13N96W TO 14N95W TO 16N94W...INCLUDING THE GULF OF
TEHUANTEPEC... NE WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.42 HOUR FORECAST WITHIN 11N86W TO 11N89W TO 10N89W TO 09N88W TO
10N86W TO 11N86W...INCLUDING THE GULF OF PAPAGAYO... NE WINDS 20
TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST LITTLE CHANGE.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 1500 UTC THU DEC 18...
INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH
THE MONSOON TROUGH EXTENDS FROM THE COAST OF PANAMA FROM 09N78W
TO 09N112W. THE ITCZ CONTINUES FROM 09N112W TO BEYOND 07N140W.
SCATTERED MODERATE CONVECTION IS NOTED FROM 06N-13N BETWEEN
92W-115W.
.FORECASTER LANDSEA. NATIONAL HURRICANE CENTER.
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