743
FZPN01 KWBC 182134
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE
NATIONAL WEATHER SERVICE. EMAIL US AT
VOSOPS@NOAA.GOV(LOWERCASE).

FOR ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE
THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM).

SECURITE

PACIFIC S OF 67N AND N OF 30N E OF A LINE FROM THE BERING STRAIT
TO 53N172E TO 50N180W TO 30N180W

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 1800 UTC AUG 18.
24 HOUR FORECAST VALID 1800 UTC AUG 19.
48 HOUR FORECAST VALID 1800 UTC AUG 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.N OF 62N BETWEEN THE W COAST OF ALASKA AND 171W N WINDS
TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.LOW 55N152W 1012 MB MOVING NE 15 KT. FROM 47N TO 55N
BETWEEN 146W AND 157W WINDS TO 25 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 57N147W 1016 MB. WITHIN 360 NM E AND
SE OF A LINE FROM LOW CENTER TO  45N158W WINDS TO 25 KT.
SEAS TO 3 M.
.48 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW
59N150W DESCRIBED BELOW.

.LOW 54N169W 1008 MB MOVING NE 15 KT. FROM 48N TO 56N BETWEEN
162W AND 178W WINDS TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW 56N163W 1012 MB. WITHIN 540 NM SW
QUADRANTS WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW 59N150W 1013 MB. WITHIN 360 NM E AND
NE QUADRANTS WINDS TO 25 KT. SEAS TO 2.5.

.FROM 30N TO 48N BETWEEN 118W AND 128W N WINDS TO 25 KT.
SEAS TO 2.5 M.
.24 HOUR FORECAST FROM 30N TO 51N BETWEEN 118W AND 129W
N TO NW WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST FROM 30N TO 52N BETWEEN 120W AND 132W
N TO NW WINDS TO 25 KT. SEAS TO 2.5 M.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 45N
TO 55N BETWEEN 138W AND 164W.
.24 HOUR FORECAST DENSE FOG FROM 43N TO 58N BETWEEN 139W
AND 152W.
.48 HOUR FORECAST DENSE FOG FROM 45N TO 56N BETWEEN 138W
AND 151W.

.FORECASTER MILLS. OCEAN PREDICTION CENTER.

NWS NATIONAL HURRICANE CENTER MIAMI FL

E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE
EQUATOR E OF 120W

SYNOPSIS VALID 1800 UTC TUE AUG 18.
24 HOUR FORECAST VALID 1800 UTC WED AUG 19.
48 HOUR FORECAST VALID 1800 UTC THU AUG 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 16N95W TO 14.5N95.5W TO 14N95.5W TO 14.5N95W TO 15N95W
TO 16N95W...INCLUDING THE GULF OF TEHUANTEPEC... N TO NE WINDS
20 TO 25 KT. SEAS TO 2.5 M. ELSEWHERE WITHIN 15N95W TO 14N97W TO
13N97W TO 13N96W TO 14N95W TO 15N95W WINDS 20 KT OR LESS. SEAS
2.5 TO 3.0 M IN N TO NE SWELL.
.24 HOUR FORECAST GULF OF TEHUANTEPEC N OF 15N N TO NE WINDS 20
TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.WITHIN 01N101W TO 01N108W TO 00N113W TO 00N132W TO 03.4S114W TO
03.4S89W TO 01N101W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN
MIXED SE AND SW SWELL.
.24 HOUR FORECAST WITHIN 01S96W TO 03N96W TO 02N112W TO 00N135W
TO 03S120W TO 03.4S82W TO 01S96W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN MIXED SE AND SW SWELL.
.48 HOUR FORECAST WITHIN 00N106W TO 01N108W TO 01S113W TO
03.4S111W TO 02S104W TO 03.4S95W TO 00N106W WINDS 20 KT OR LESS.
SEAS 2.5 M IN MIXED SE AND S SWELL.

.06 HOUR FORECAST WITHIN 12N87W TO 11N88W TO 11N87W TO 12N87W...
INCLUDING THE GULF OF PAPAGAYO... E WINDS 20 TO 25 KT. SEAS LESS
THAN 2.5 M.
.18 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.30 HOUR FORECAST WITHIN 12N87W TO 12N88W TO 11N88W TO 11N87W TO
11N86W TO 12N87W...INCLUDING THE GULF OF PAPAGAYO... E WINDS 20
TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.18 HOUR FORECAST WITHIN 14N136W TO 14N137W TO 13N138W TO
12N137W TO 12N136W TO 13N136W TO 14N136W WINDS 20 KT OR LESS.
SEAS 2.5 M IN E SWELL.
.24 HOUR FORECAST WITHIN 14N136W TO 14N138W TO 13N139W TO
12N139W TO 12N138W TO 13N137W TO 14N136W WINDS 20 KT OR LESS.
SEAS 2.5 M IN E SWELL.
.48 HOUR FORECAST WITHIN 15.5N140W TO 14.5N140W TO 15N140W TO
15.5N140W WINDS 20 KT OR LESS. SEAS 2.5 M IN E SWELL.

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

CONVECTION VALID AT 2000 UTC TUE AUG 18...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10.5N75W TO 09N95W. ITCZ FROM 09N95.5W TO
09.5N103W...THEN RESUMES FROM 08.5N105W TO 06.5N114W TO
10.5N131W...
THEN RESUMES NEAR 09.5N134W TO BEYOND 09N140W. SCATTERED TO
NUMEROUS
MODERATE ISOLATED STRONG FROM 03.5N TO 16N BETWEEN 81W AND 90W.
SCATTERED MODERATE ISOLATED STRONG CONVECTION FROM 10N TO 14N
BETWEEN 90W AND 98W. SCATTERED TO NUMEROUS MODERATE TO STRONG
FROM 06.5N TO 14N BETWEEN 99W AND 109W. SCATTERED MODERATE
CONVECTION IS NOTED FROM 02.5N TO 13N BETWEEN 109W AND 125W.
SCATTERED TO NUMEROUS MODERATE TO STRONG FROM 00N TO 14N BETWEEN
128W AND 140W.


.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.

$$