279
FZPN03 KNHC 180131
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC TUE AUG 18 2026

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC TUE AUG 18.
24 HOUR FORECAST VALID 0000 UTC WED AUG 19.
48 HOUR FORECAST VALID 0000 UTC THU AUG 20.

.WARNINGS.

...GALE WARNING...
.WITHIN 16N94W TO 16N95W TO 16N96W TO 15N96W TO 15N95W TO
16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO
35 KT. SEAS BUILDING TO 2.5 TO 3.0 M. WITHIN 11N97W TO 11N98W TO
11N100W TO 10N100W TO 09N99W TO 09N98W TO 11N97W WINDS 20 KT OR
LESS. SEAS 2.5 TO 3.0 M IN MIXED NE TO E AND SW SWELL.
.12 HOUR FORECAST LITTLE CHANGE...EXCEPT WINDS BELOW GALE FORCE.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.

.SYNOPSIS AND FORECAST.

.WITHIN 28N115W TO 29N115W TO 30N117W TO 29N116W TO 27N115W TO
26N115W TO 28N115W...INCLUDING SEBASTIAN VIZCAINO BAY AND WITHIN
60 NM OF SHORE...NW WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.09 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.TROPICAL WAVE NEAR 126W. WITHIN 13N125W TO 14N127W TO 13N130W
TO 10N128W TO 10N126W TO 10N124W TO 13N125W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN MIXED SE AND SW SWELL.
.24 HOUR FORECAST TROPICAL WAVE NEAR 136W. CONDITIONS IMPROVE.
WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

.WITHIN 01S102W TO 01S105W TO 00N108W TO 01S110W TO 03S111W TO
03.4S95W TO 01S102W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN SE
TO S SWELL.
.24 HOUR FORECAST WITHIN 01N100W TO 01N110W TO 00N130W TO
03.4S120W TO 03.4S89W TO 01N100W...EXCEPT LEE OF GALAPAGOS
ISLANDS...WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SE AND
SW SWELL.
.48 HOUR FORECAST WITHIN 02N96W TO 01N106W TO 02N116W TO 01N129W
TO 03S120W TO 03.4S81W TO 02N96W...EXCEPT LEE OF GALAPAGOS
ISLANDS...WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SE AND
SW SWELL.

.SCATTERED TSTMS FROM 19N TO 27N BETWEEN MEXICO AND 109.5W. WINDS
20 KT OR LESS. SEAS LESS THAN 2.5 M.
.03 HOUR FORECAST WITHIN 26N109W TO 28N111W TO 26N111W TO
25N110W TO 24N108W TO 25N108W TO 26N109W...INCLUDING THE CENTRAL
AND SOUTHERN GULF OF CALIFORNIA...E TO SE WINDS 20 TO 30 KT.
SEAS LESS THAN 2.5 M. SCATTERED TSTMS.
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST WITHIN 31N113W TO 31N114W TO 29N113W TO
30N112W TO 31N113W...INCLUDING THE NORTHERN GULF OF CALIFORNIA
...SE TO S WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.42 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.06 HOUR FORECAST WITHIN 11N87W TO 12N88W TO 11N89W TO 10N88W TO
10N87W TO 11N87W...INCLUDING THE GULF OF PAPAGAYO...NE TO E
WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE...EXCEPT SEAS BUILDING TO 2.5 TO
3.0 M.
.48 HOUR FORECAST LITTLE CHANGE.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

CONVECTION VALID AT 0100 UTC TUE AUG 18...

.TROPICAL WAVE NEAR 78W...SCATTERED TO NUMEROUS MODERATE AND
ISOLATED STRONG FROM 02N TO 12N BETWEEN 77W AND 93W.

.TROPICAL WAVE NEAR 98W...SCATTERED MODERATE ISOLATED STRONG
FROM 06N TO 13N BETWEEN 96W AND 103W.

.TROPICAL WAVE NEAR 126W...SCATTERED MODERATE ISOLATED STRONG
FROM 06N TO 14N BETWEEN 114W AND 136W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM LOW PRES NEAR 09N72W TO 09N84W TO 06.5N108W.
ITCZ FROM 06.5N108W TO 08.5N122W THEN RESUMES FROM 09N129W TO
BEYOND 08N140W. SCATTERED MODERATE ISOLATED STRONG FROM 00N TO
02.5N BETWEEN 129W AND 138W.

$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.