High Seas Forecast
Issued by NWS

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FZPN01 KWBC 210955
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC THU MAR 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

FROM APRIL 1 TO OCTOBER 15, DUE TO THE CLIMATOLOGY OF THE NORTH
PACIFIC, HIGH SEAS FORECASTS WILL ONCE AGAIN INCLUDE ALL
FORECASTS OF WINDS 20 TO 30 KNOTS AND SEAS 8 FEET OR GREATER.
ALSO, PLEASE SEE HTTPS://OCEAN.WEATHER.GOV/PROPOSED_HIGH_SEAS
_TROPICAL.PHP FOR A PROPOSAL, AND A REQUEST FOR COMMENTS, TO
INCREASE READABILITY OF THE HIGH SEAS FORECAST (WEB ADDRESS
LOWERCASE).

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 MAR 21.
24 HOUR FORECAST VALID 0600 UTC MAR 22.
48 HOUR FORECAST VALID 0600 UTC MAR 23.

.WARNINGS.

...STORM WARNING...
.LOW W OF AREA NEAR 37N153E 972 MB MOVING NE 25 KT. W OF A LINE
FROM 30N169E TO 36N172E TO 41N160E WINDS 25 TO 40 KT. SEAS 11 TO
19 FT.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN LOW 41N166E 974 MB AND
SECOND LOW 45N175E 977 MB. WITHIN 480 NM SW AND 420 NM SE
QUADRANTS OF MAIN LOW WINDS 35 TO 50 KT. SEAS 18 TO 36 FT.
ELSEWHERE FROM 30N TO 48N W OF 172W WINDS 25 TO 40 KT. SEAS 10
TO 25 FT. ELSEWHERE FROM 33N TO 42N BETWEEN 161W AND 172W WINDS
25 TO 35 KT. SEAS 9 TO 14 FT.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN LOW 50N176W 977 MB AND
SECOND LOW 52N166W 983 MB. FROM 34N TO 58M BETWEEN 150W AND 173E
 WINDS 25 TO 40 KT. SEAS 12 TO 29 FT...HIGHEST S QUADRANT.

...GALE WARNING...
.LOW 52N170W 995 MB MOVING NE 25 KT. WITHIN 480 NM NE
QUADRANT...AND FROM 40N TO 52N BETWEEN 160W AND 169W WINDS 25 TO
40 KT. SEAS 10 TO 21 FT.
.24 HOUR FORECAST LOW 60N166W 993 MB. N OF 50N BETWEEN 150W AND
163W WINDS 25 TO 35 KT. SEAS 9 TO 18 FT.
.36 HOUR FORECAST LOW N OF AREA WITH ASSOCIATED CONDITIONS
DIMINISHED.

...GALE WARNING...
.LOW 50N177W 994 MB MOVING NE 15 KT. FROM 41N TO 45N BETWEEN
171W AND 174E WINDS 25 TO 35 KT. SEAS 12 TO 19 FT.
.24 HOUR FORECAST LOW 53N170W 1001 MB. WITHIN 120 NM SE QUADRANT
WINDS TO 25 KT. SEAS 9 TO 13 FT.
.30 HOUR FORECAST LOW DISSIPATED. ASSOCIATED CONDITIONS
DIMINISHED.

...GALE WARNING...
.LOW 41N139W 1008 MB MOVING E 15 FT. WITHIN 240 NM W AND NW
QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST LOW 41N134W 1001 MB. WITHIN 360 NM W AND NW
QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 15 FT.
.48 HOUR FORECAST LOW 45N130W 998 MB. WITHIN 420 NM SW AND 360
NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS 10 TO 18 FT. ELSEWHERE
FROM 33N TO 49N BETWEEN 130W AND 139W AND FROM 34N TO 42N WINDS
20 TO 30 KT. SEAS 8 TO 16 FT.

.SYNOPSIS AND FORECAST.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 55N BETWEEN
164W AND 170W.
.24 HOUR FORECAST DENSE FOG FROM 35N TO 46N BETWEEN 158W AND
174W...AND FROM 42N TO 48N BETWEEN 174W AND 160E.
.48 HOUR FORECAST DENSE FOG FROM 40N TO 56N BETWEEN 153W AND
170W...AND FROM 47N TO 56N BETWEEN 170W AND 175E.

.LIGHT FREEZING SPRAY N OF 55N W OF 178W.
.24 HOUR FORECAST CONDITIONS IMPROVED.

.FORECASTER ROWLAND. 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 THU MAR 21.
24 HOUR FORECAST VALID 0600 UTC FRI MAR 22.
48 HOUR FORECAST VALID 0600 UTC SAT MAR 23.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 10N119W TO 13N120W TO 11N132W TO 07N134W TO 03N126W TO
06N120W TO 10N119W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW
SWELL.
.24 HOUR FORECAST WITHIN 13N118W TO 13N132W TO 11N138W TO
05N139W TO 07N117W TO 13N118W WINDS 20 KT OR LESS. SEAS 8 FT IN N
SWELL.
.48 HOUR FORECAST WITHIN 09N118W TO 14N129W TO 14N140W TO
04N140W TO 05N127W TO 07N119W TO 09N118W NE WINDS 20 TO 25 KT.
SEAS 8 TO 9 FT IN NW TO N SWELL.

.24 HOUR FORECAST COLD FRONT FROM 30N135W TO 23N140W. WITHIN
30N136W TO 30N140W TO 25N140W TO 28N138W TO 30N136W WINDS 20 KT
OR LESS. SEAS 8 FT IN W TO NW SWELL.
.48 HOUR FORECAST COLD FRONT FROM 30N124W TO 19N140W. WITHIN
30N128W TO 30N140W TO 21N140W TO 23N137W TO 30N128W WINDS 20 KT
OR LESS. SEAS 8 TO 10 FT IN W TO NW SWELL.

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

CONVECTION VALID AT 0900 UTC THU MAR 21...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH EXTENDS FROM 06N77W TO 04N99W. ITCZ CONTINUES
FROM 04N99W TO 06N110W...AND FROM 04N117W TO BEYOND 03N140W. A
TROUGH EXTENDS FROM 01N115W TO 08N111W. SCATTERED MODERATE
ISOLATED STRONG FROM 02N TO 09N BETWEEN 92W AND 107W. SCATTERED
MODERATE FROM 02N TO 07N BETWEEN 78W AND 89W AND FROM 01N TO 06N
BETWEEN 119W AND 140W.

$$
.FORECASTER AREINHART. NATIONAL HURRICANE CENTER.


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