670
FZPN01 KWBC 312216
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC MON AUG 31 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 31.
24 HOUR FORECAST VALID 1800 UTC SEP 01.
48 HOUR FORECAST VALID 1800 UTC SEP 02.

.WARNINGS.

...GALE WARNING...
.LOW 60N146W 994 MB MOVING SE 10 KT. FROM 57N TO 59N BETWEEN 145W
AND 158W...INCLUDING THE SHELIKOF STRAIT...WINDS 25 TO 40 KT.
SEAS 3 TO 4.5 M. ELSEWHERE FROM 48N TO 60N BETWEEN 140W AND 160W
WINDS 20 TO 30 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 54N135W 994 MB. WITHIN 360 NM SW QUADRANT
WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. WITHIN 600 NM SW AND 720 NM W
QUADRANTS WINDS 20 TO 30 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW 51N131W 995 MB. WITHIN 720 NM S...780 NM W
AND 360 NM NW QUADRANTS WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M.

...GALE WARNING...
.LOW 56N174E 998 MB MOVING NE 25 KT. FROM 45N TO 60N W OF 175W
WINDS 25 TO 35 KT. SEAS 2.5 TO 4M. ELSEWHERE FROM 50N TO 60N W OF
160W WINDS 20 TO 30 KT. SEAS TO 3 M.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN LOW 56N175E 992 MB. FROM
50N TO 62N W OF 175W AND S OF 50N W OF 172W WINDS 20 TO 30 KT.
SEAS 2.5 TO 4 M.
.48 HOUR FORECAST LOW DISSIPATED WITH NEW LOW W OF THE AREA
54N168E 980 MB. N OF 42N BETWEEN 170W AND 180W AND FROM 60N TO
64N W OF 170W WINDS 25 TO 40 KT. SEAS 3.5 TO 6 M...HIGHEST NEAR
180W. ELSEWHERE IN THE BERING SEA N OF 52N W OF 160W WINDS 20 TO
30 KT. SEAS 2.5 TO 4.5 M.

.SYNOPSIS AND FORECAST.

.FROM 50N TO 57N BETWEEN 151W AND 172W AREA OF SW TO W WINDS TO
25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST CONDITIONS DESCRIBED ABOVE WITH LOW 56N175E.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 45N TO 58N W OF
159W AND N OF 65N W OF ALASKA.
.24 HOUR FORECAST DENSE FOG WITHIN 660 NM NW AND N OF A LINE FROM
53N156W TO 46N180W.
.48 HOUR FORECAST DENSE FOG FROM 44N TO 52N W OF 163W AND IN THE
BERING SEA FROM 52N TO 60N W OF 162W.

.FORECASTER KREKELER. 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 MON AUG 31.
24 HOUR FORECAST VALID 1800 UTC TUE SEP  1.
48 HOUR FORECAST VALID 1800 UTC WED SEP  2.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE KARINA NEAR 17.5N 125.8W 950 MB AT 2100 UTC AUG 31
MOVING WNW OR 285 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 115 KT
GUSTS 140 KT. TROPICAL STORM FORCE WINDS WITHIN 100 NM N
SEMICIRCLE...80 NM SE QUADRANT AND 70 NM SW QUADRANT.  SEAS 4 M
OR GREATER WITHIN 270 NM N SEMICIRCLE AND 180 NM S SEMICIRCLE
WITH SEAS TO 11 M. ELSEWHERE WITHIN 19N123W TO 21N125W TO
22N127W TO 18N129W TO 14N125W TO 16N123W TO 19N123W WINDS 20 TO
33 KT. SEAS 4.0 TO 7.0 M. REMAINDER OF AREA WITHIN 20N119W TO
30N121W TO 26N133W TO 20N136W TO 13N131W TO 11N123W TO 20N119W
WINDS 20 KT OR LESS. SEAS 2.5 TO 4.0 M IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE KARINA NEAR 18.1N 129.2W. MAXIMUM
SUSTAINED WINDS 110 KT GUSTS 135 KT. TROPICAL STORM FORCE WINDS
WITHIN 100 NM N SEMICIRCLE AND 70 NM S SEMICIRCLE. SEAS 4 M OR
GREATER 240 NM IN NW QUADRANT...180 NM IN NE AND SW
QUADRANTS...AND 120 NM IN SE QUADRANT WITH SEAS TO 11 M.
ELSEWHERE WITHIN 23N129W TO 23N132W TO 19N133W TO 17N132W TO
16N128W TO 19N126W TO 23N129W WINDS 20 TO 33 KT. SEAS 4.0 TO 6.5
M. REMAINDER OF AREA WITHIN 26N128W TO 24N140W TO 17N140W TO
12N131W TO 13N126W TO 19N124W TO 26N128W WINDS 20 KT OR LESS.
SEAS 2.5 TO 4.0 M IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE KARINA NEAR 18.9N 133.1W. MAXIMUM
SUSTAINED WINDS 100 KT GUSTS 120 KT. TROPICAL STORM FORCE WINDS
WITHIN 60 NM S SEMICIRCLE...100 NM NE QUADRANT AND 90 NM NW
QUADRANT. SEAS 4 M OR GREATER 240 NM IN NW QUADRANT...180 NM IN
NE AND SW QUADRANTS...AND 120 NM IN SE QUADRANT WITH SEAS TO 10
M. ELSEWHERE WITHIN 25N132W TO 24N137W TO 21N137W TO 18N135W TO
18N131W TO 25N132W WINDS 20 TO 33 KT. SEAS 3.5 TO 7.0 M.
REMAINDER OF AREA WITHIN 26N129W TO 27N140W TO 11N140W TO 09N137W
TO 10N129W TO 18N128W TO 26N129W WINDS 20 KT OR LESS. SEAS 2.5
TO 3.5 M IN MIXED SWELL.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

...STORM WARNING...
.LOW PRESSURE NEAR 13N107W 1005 MB LOW. WITHIN 17N104W TO
18N108W TO 16N111W TO 10N110W TO 09N107W TO 11N105W TO 17N104W
WINDS
20 TO 30 KT. SEAS 2.5 TO 3.0 M.
.12 HOUR FORECAST LOW PRESSURE...POSSIBLE TROPICAL CYCLONE...
NEAR 14N109W 1001 MB. WITHIN 14N108W TO 14N109W TO 13N109W TO
13N108W TO 14N108W WINDS 30 TO 35 KT. SEAS 4.0 TO 5.5 M.
ELSEWHERE WITHIN 18N106W TO 19N109W TO 16N113W TO 09N110W TO
11N106W TO 18N106W WINDS 20 TO 30 KT. SEAS 2.5 TO 4.0 M.
.24 HOUR FORECAST LOW PRESSURE...POSSIBLE TROPICAL
CYCLONE...15N110W 994 MB. WITHIN 15N109W TO 16N109W TO 15N111W
TO 14N110W TO 14N109W TO 15N109W WINDS 30 TO 40 KT. SEAS 5.5 TO
7.0 M. ELSEWHERE WITHIN 18N106W TO 20N112W TO 17N115W TO 10N111W
TO 10N107W TO 18N106W WINDS 20 TO 30 KT. SEAS 2.5 TO 5.5 M.
.36 HOUR FORECAST LOW PRESSURE...POSSIBLE TROPICAL
CYCLONE...16N111W 990 MB. WITHIN 17N111W TO 16N112W TO 15N111W
TO 15N110W TO 17N111W WINDS 40 TO 50 KT. SEAS 5.5 TO 7.0 M.
ELSEWHERE WITHIN 17N110W TO 17N112W TO 16N112W TO 15N111W TO
15N110W TO 17N110W WINDS 30 TO 40 KT. SEAS 4.5 TO 5.5 M.
REMAINDER OF AREA WITHIN 21N108W TO 21N113W TO 18N116W TO
14N115W TO 11N111W TO 13N106W TO 21N108W...INCLUDING NEAR CABO
CORRIENTES...WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M.
.48 HOUR FORECAST LOW PRESSURE...POSSIBLE TROPICAL
CYCLONE...17N113W 990 MB. WITHIN 17N112W TO 18N112W TO 18N113W
TO 17N113W TO 17N112W WINDS 40 TO 50 KT. SEAS 6.0 TO 7.5 M.
ELSEWHERE WITHIN 18N111W TO 18N113W TO 17N114W TO 16N113W TO
17N111W TO 18N111W WINDS 30 TO 40 KT. SEAS 5.0 TO 6.0 M.
REMAINDER OF AREA WITHIN 22N108W TO 22N114W TO 17N118W TO
11N112W TO 15N106W TO 22N108W...INCLUDING NEAR CABO CORRIENTES...
WINDS 20 TO 30 KT. SEAS 2.5 TO 5.0 M.

.SYNOPSIS AND FORECAST.

.24 HOUR FORECAST WITHIN 02S118W TO 01S120W TO 03.4S120W TO
03.4S116W TO 02S118W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S
TO SW SWELL.
.48 HOUR FORECAST WITHIN 01N108W TO 02N128W TO 00N135W TO
01S120W TO 03.4S120W TO 03.4S106W TO 01N108W WINDS 20 KT OR
LESS. SEAS 2.5 TO 3.0 M IN S TO SW SWELL.

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

CONVECTION VALID AT 2130 UTC MON AUG 31...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

THE MONSOON TROUGH EXTENDS FROM COASTAL PANAMA AT 08N82W TO
12N117W. AFTER ENDING SOUTHEAST OF KARINA, THE MONSOON TROUGH
RESUMES AGAIN FROM 09N131W TO BEYOND 08N140W. NUMEROUS MODERATE
AND SCATTERED STRONG CONVECTION IS OCCURRING FROM 06N-17N BETWEEN
98W-114W. SCATTERED MODERATE AND ISOLATED STRONG CONVECTION IS
NOTED FROM 05N-10N BETWEEN 90W-97W, NORTH OF 05N BETWEEN 81W-88W,
AND FROM 04N-10W BETWEEN 116W-130W.


.FORECASTER LANDSEA. NATIONAL HURRICANE CENTER.

$$