282
FZPN01 KWBC 180938
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC WED SEP 18 2024

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

THE NATIONAL WEATHER SERVICE IS ACCEPTING PUBLIC COMMENTS UNTIL
OCTOBER 16 2024 ON A PROPOSAL TO REPLACE FEET WITH METERS WHEN
DESCRIBING SEAS IN A VARIETY OF NATIONAL MARINE CENTER TEXT AND
GRAPHICAL PRODUCTS FOR THE HIGH SEAS AREAS ONLY.
TO LEARN MORE PLEASE VISIT (WEB ADDRESS LOWERCASE)
HTTPS://OCEAN.WEATHER.GOV/PROPOSED-METERS.PHP

FROM OCTOBER 15 TO APRIL 1, DUE TO THE CLIMATOLOGY OF THE NORTH
PACIFIC AND THE FREQUENCY AND VOLUME OF WEATHER HAZARDS, ALONG
WITH CUSTOMER FEEDBACK, HIGH SEAS FORECASTS WILL BE LIMITED TO
WINDS OF 25 TO 35 KNOTS AND HIGHER, AND SEAS OF 12 FEET OR
GREATER, ALONG WITH FREEZING SPRAY, DENSE FOG, VOLCANIC ASH,
AND ANYTHING TROPICAL (INCLUDING A DEPRESSION). LESSER
CONDITIONS WILL BE INCLUDED FOR WARNING CONDITIONS AND TO
PRESERVE CONTINUITY WHERE APPROPRIATE.

SECURITE

PACIFIC N OF 30N AND S OF 67N E OF A LINE FROM BERING STRAIT
TO 50N 160E

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 0600 UTC SEP 18.
24 HOUR FORECAST VALID 0600 UTC SEP 19.
48 HOUR FORECAST VALID 0600 UTC SEP 20.

.WARNINGS.

...STORM WARNING...
.LOW 59N160W 982 MB MOVING E 25 KT. WITHIN 240 NM S QUADRANT
WINDS 35 TO 50 KT. SEAS 16 TO 27 FT. ELSEWHERE WITHIN 600 NM
E... AND 420 NM S QUADRANT AND W SEMICIRCLE WINDS 25 TO 35 KT.
SEAS 9 TO 19 FT...HIGHEST NEAR 54N160W.
.24 HOUR FORECAST LOW 59N141W 1002 MB. WITHIN 480 NM S AND SW
QUADRANTS WINDS 25 TO 40 KT. SEAS 9 TO 18 FT...HIGHEST NEAR
55N145W.
.48 HOUR FORECAST LOW 58N139W 1012 MB. FROM 50N TO 59N E OF 141W
WINDS LESS THAN 25 KT. SEAS 8 TO 10 FT.

...GALE WARNING...
.LOW 42N164E 1003 MB MOVING NE 30 KT. WITHIN 420 NM SE
SEMICIRCLE WINDS 25 TO 35 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW 46N180W 1003 MB. FROM 45N TO 51N BETWEEN
162W AND 174W AND WITHIN 420 NM S OF A LINE FROM 46N174W TO
40N173E WINDS 25 TO 35 KT. SEAS 8 TO 15 FT.
.48 HOUR FORECAST LOW 51N156W 1000 MB. WITHIN 420 NM N
SEMICIRCLE AND WITHIN 300 NM S OF A FRONT FROM 51N143W TO
51N157W TO 43N170W WINDS 25 TO 35 KT. SEAS 8 TO 14 FT. ALSO
WITHIN AN AREA BOUNDED BY A LINE FROM 50N175W TO 50N170W TO
39N170W TO 36N177E TO 50N175W WINDS LESS THAN 25 KT. SEAS 8 TO
12 FT.

...GALE WARNING...
.36 HOUR FORECAST LOW 48N165E 995 MB. FROM 41N TO 49N W OF 172E
WINDS 25 TO 40 KT. SEAS 8 TO 15 FT.
.48 HOUR FORECAST LOW 51N173E 987 MB. WITHIN 420 NM E AND NE...
AND 480 NM S AND SW QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 16
FT...HIGHEST NEAR 49N173E.

.SYNOPSIS AND FORECAST.

.COMPLEX LOW WITH MEAN CENTER 45N126W 1010 MB MOVING SE 15 KT.
FROM 40N TO 51N BETWEEN 128W AND 135W AREA OF N TO NW WINDS TO
25 KT. SEAS TO 10 FT.
.24 HOUR FORECAST LOW DISSIPATED INLAND. FROM 39N TO 50N BETWEEN
125W AND 130W AREA OF N TO NW WINDS TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST FROM 37N TO 50N BETWEEN 124W AND 129W AREA OF
N TO NW WINDS 20 TO 30 KT. SEAS TO 11 FT.

.LOW W OF AREA 51N156W 999 MB MOVING NE 15 KT. N OF 48N W OF
165E WINDS TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LOW NW OF AREA NEAR 54N165E 993 MB. N OF 50N W
OF 175E WINDS 20 TO 30 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW NW OF AREA NEAR 55N166E 993 MB WITH
CONDITIONS DESCRIBED ABOVE WITH LOW 51N173E.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 240 NM S OF
A LINE FROM 52N148W TO 48N151W TO 46N159W.
.24 HOUR FORECAST DENSE FOG FROM 44N TO 50N BETWEEN 155W AND
180W.
.48 HOUR FORECAST DENSE FOG WITHIN 300 NM S OF A LINE FROM
53N145W TO 52N157W TO 48N170W.

.FORECASTER CLARK. OCEAN PREDICTION CENTER.

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 0600 UTC WED SEP 18.
24 HOUR FORECAST VALID 0600 UTC THU SEP 19.
48 HOUR FORECAST VALID 0600 UTC FRI SEP 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.03 HOUR FORECAST WITHIN 14N139W TO 14N140W TO 12.5N140W TO
13N139.5W TO 14N139W WINDS 20 KT OR LESS. SEAS 8 FT IN NE SWELL.
.15 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

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

CONVECTION VALID AT 0820 UTC WED SEP 18...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM 10.5N74W TO 11.5N83W TO 09N95W
TO 10.5N117W TO 10.5N133W...THEN ITCZ TO BEYOND 11N140W.
SCATTERED MODERATE ISOLATED STRONG CONVECTION FROM 03.5N TO 10N E
OF 86W. SCATTERED MODERATE TO STRONG CONVECTION FROM 06.5N TO
18N BETWEEN 91W AND 105W...AND FROM 08N TO 12.5N BETWEEN 108W AND
139W.

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.