High Seas Forecast
Issued by NWS

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066
FZPN01 KWBC 281558 CCC
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
ISSUED BY NATIONAL WEATHER SERVICE HONOLULU HI
1630 UTC TUE MAR 28 2017

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

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

SYNOPSIS VALID 1200 UTC MAR 28.
24 HOUR FORECAST VALID 1200 UTC MAR 29.
48 HOUR FORECAST VALID 1200 UTC MAR 30.

.WARNINGS.

...STORM WARNING...
.LOW 38N165E 980 MB MOVING NE 35 KT. OVER FORECAST WATERS WITHIN
500 NM S AND SW QUADRANTS WINDS 40 TO 50 KT. SEAS 20 TO 36 FT.
ELSEWHERE W OF A LINE FROM 30N175W 40N179W TO 43N172E WINDS 25
TO 40 KT. SEAS 9 TO 22 FT.
.24 HOUR FORECAST LOW 44N176W 970 MB. OVER FORECAST WATERS WITHIN
900 NM SW SEMICIRCLE WINDS 40 TO 55 KT. SEAS 17 TO 33 FT.
ELSEWHERE FROM 30N TO 50N BETWEEN 157W AND 160E WINDS 25 TO 40 KT.
SEAS 9 TO 17 FT.
.48 HOUR FORECAST LOW 49N166W 968 MB. WITHIN 1040 NM S AND SW
QUADRANTS WINDS 40 TO 50 KT. SEAS 25 TO 38 FT. ELSEWHERE BETWEEN
49N AND 30N FROM 140W TO 175E WINDS 25 TO 40 KT. SEAS 10 TO 18 FT.

...GALE WARNING...
.FROM 30N TO 38N E OF 124W N TO NW WINDS 25 TO 35 KT. SEAS 8 TO
12 FT.
.24 HOUR FORECAST FROM 30N TO 39N BETWEEN 119W AND 125W N TO NW
WINDS 25 TO 35 KT. SEAS 10 TO 14 FT.
.48 HOUR FORECAST FROM 30N TO 40N BETWEEN 119W AND 126W N WINDS
25 TO 35 KT. SEAS 8 TO 12 FT.

...GALE WARNING...
.LOW 49N165E 992 MB DRIFTING S 5 KT THEN E AFT 24 HRS. WITHIN
240 NM W AND SW SEMICIRCLES WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.
.24 HOUR FORECAST LOW 48N165E 996 MB. OVER FORECAST WATERS
BETWEEN 160 NM AND 500 NM S AND SW QUADRANTS WINDS 25 TO 35 KT.
SEAS 8 TO 16 FT.
.48 HOUR FORECAST LOW 47N168E 999 MB. WITHIN 480 NM S QUADRANT
WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.

...GALE WARNING...
.FRONT FROM LOW 53N133W TO 45N146W TO 37N150W TO 30N165W.
WITHIN 300 NM E OF FRONT BETWEEN 43N AND 36N WINDS 25 TO 35 KT.
SEAS 10 TO 14 FT.
.24 HOUR FORECAST NEW LOW 47N127W 1008 MB. FRONT FROM LOW TO
42N131W TO 36N143W. OVER FORECAST WATERS WINDS 25 TO 35 KT
WITHIN 180 NM E OF FRONT N OF 42N. WINDS 25 TO 30 KT WITHIN
160 NM E OF REST OF FRONT.
.48 HOUR FORECAST LOW MOVED INLAND AND FRONT DISSIPATED.
ASSOCIATED CONDITIONS DIMINISHED.

...GALE WARNING...
.48 HOUR FORECAST NEW LOW 49N166W 968 MB. OVER FORECAST WATERS
FROM 46N TO 57N BETWEEN 180W AND 140W WINDS 30 TO 45 KT. SEAS 11
TO 18 FT...EXCEPT N OF THE ALEUTIAN ISLANDS SEAS 8 TO 13 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY NE OF A LINE FROM 56N167W TO
61N178W.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.

.SYNOPSIS AND FORECAST.

.LOW 49N164W 993 MB MOVING E 20 KT. WITHIN 300 NM W AND NW
QUADRANTS WINDS 20 TO 30 KT. SEAS 9 TO 14 FT. ELSEWHERE WITHIN
600 NM SE AND S QUADRANTS WINDS 20 TO 30 KT. SEAS 10 TO 16 FT.
.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.LOW 53N133W 1003 MB MOVING NE 25 KT. OVER FORECAST WATERS
WITHIN 540 NM S AND SE QUADRANTS WINDS 20 TO 30 KT. SEAS 10 TO
16 FT.
.24 HOUR FORECAST LOW MOVED INLAND AND ASSOCIATED CONDITIONS
DIMINISHED.

.LOW 54N152W 994 MB MOVING NE 20 KT. OVER FORECAST WATERS WITHIN
360 NM SE QUADRANT WINDS TO 25 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST LOW 60N148W 997 MB. OVER FORECAST WATERS WITHIN
460 NM SE QUADRANT WINDS 20 TO 25 KT. SEAS 8 TO 11 FT.
LOW ABOUT TO MOVE INLAND WITH ASSOCIATED CONDITIONS DIMINISHED.

.BOGOSLOF VOLCANO AT 54N168W IS IN A STATE OF UNREST. MARINERS
TRAVELING IN THE VICINITY OF THE VOLCANO ARE URGED TO EXERCISE
CAUTION. IF MARINERS ENCOUNTER ANY VOLCANIC ASH...REPORT THE
OBSERVATION TO THE OCEAN PREDICTION CENTER BY CALLING
301-683-1520.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 180 NM
EITHER SIDE OF A LINE FROM 45N142W TO 34N153W...AND WITHIN 120
NM OF 48N137W.
.24 HOUR FORECAST DENSE FOG WITHIN 180 NM EITHER SIDE OF A LINE
FROM 47N127W TO 33N150W...AND FROM 30N TO 41N BETWEEN 170W AND
179W.
.48 HOUR FORECAST DENSE FOG WITHIN 300 NM EITHER SIDE OF A LINE
FROM 45N173W TO 47N161W TO 33N155W. ELSEWHERE WITHIN 960 NM S
QUADRANT WINDS 25 TO 40 KT

.HIGH 35N131W 1031 MB NEARLY STATIONARY.
.24 HOUR FORECAST HIGH 33N133W 1029 MB.
.48 HOUR FORECAST HIGH 33N137W 1029 MB.

.HIGH 33N166W 1019 MB MOVING NE 40 KT.
.24 HOUR FORECAST HIGH 37N147W 1026 MB.
.48 HOUR FORECAST HIGH 40N136W 1029 MB.

.FORECASTER LAU. NWS HONOLULU HAWAII.

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 1200 UTC TUE MAR 28.
24 HOUR FORECAST VALID 1200 UTC WED MAR 29.
48 HOUR FORECAST VALID 1200 UTC THU MAR 30.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.
.GULF OF CALIFORNIA N OF 30N NW TO N WINDS 20 TO 25 KT. SEAS LESS
THAN 8 FT.
.12 HOUR FORECAST GULF OF CALIFORNIA FROM 26N TO 29N W OF 110W NW
TO N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.WITHIN AREA BOUNDED BY 25N112W TO 24N113W TO 27N124W TO 30N126W
TO 30N116W TO 25N112W NW TO N WINDS 20 TO 25 KT. SEAS 8 TO 13 FT
IN NW SWELL...HIGHEST NEAR 30N119W. WITHIN AREA BOUNDED BY
08N133W TO 05N140W TO 18N140W TO 19N129W TO 14N126W TO 08N133W NE
TO E WINDS 20 TO 25 KT. SEAS 10 TO 12 FT IN MIXED NE WIND WAVES
AND NW SWELL. ELSEWHERE WITHIN AREA BOUNDED BY 11N113W TO 02N140W
TO 18N127W TO 20N140W TO 30N140W TO 24N112W TO 11N113W WINDS 20
KT OR LESS. SEAS 8 TO 11 FT IN MIXED SW AND NW SWELL
.24 HOUR FORECAST WITHIN AREA BOUNDED BY 26N121W TO 26N123W TO
27N125W TO 30N126W TO 30N120W TO 26N121W NW TO N WINDS 20 TO 25
KT. SEAS 11 TO 14 FT IN NW SWELL. ELSEWHERE WITHIN AREA BOUNDED
BY 03N125W TO 00S140W TO 30N140W TO 29N115W TO 20N108W TO 03N125W
WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SW AND NW SWELL.
.48 HOUR FORECAST WITHIN AREA BOUNDED BY 00S120W TO 03N140W TO
30N140W TO 30N116W TO 19N107W TO 00N120W WINDS 20 KT OR LESS.
SEAS 8 TO 11 FT IN MIXED SW AND NW SWELL.

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

CONVECTION VALID AT 1500 UTC TUE MAR 28...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
ITCZ AXIS EXTENDS FROM 06N86W TO 05N95W TO 02N107W. SCATTERED
MODERATE ISOLATED STRONG FROM 03N TO 06N BETWEEN 88W AND 99W.
SCATTERED MODERATE FROM 08N TO 10N BETWEEN 120W AND 125W.

$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.



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