High Seas Forecast
Issued by NWS

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163
FZPN01 KWBC 290358
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
ISSUED BY NATIONAL WEATHER SERVICE HONOLULU HI
0430 UTC WED MAR 29 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC MAR 29.
24 HOUR FORECAST VALID 0000 UTC MAR 30.
48 HOUR FORECAST VALID 0000 UTC MAR 31.

.WARNINGS.

...STORM WARNING...
.LOW 41N174W 975 MB MOVING NE 25 KT. BETWEEN 300 NM AND 720 NM
SW QUADRANT WINDS 35 TO 50 KT. SEAS 17 TO 34 FT. ELSEWHERE
WITHIN 240 N NW...480 NM NE...1020 NM SE AND 900 NM SW QUADRANTS
WINDS 25 TO 35 KT. SEAS 10 TO 22 FT...EXCEPT IN SW QUADRANT 14
TO 28 FT. ALSO WITHIN 360 NM NW...780 NM NE AND 1140 NM SE
QUADRANTS WINDS TO 25 KT. SEAS 8 TO 15 FT.
.24 HOUR FORECAST LOW 45N174W 964 MB. BETWEEN 180 NM AND 780 NM
SW QUADRANT WINDS 40 TO 55 KT. SEAS 22 TO 40 FT. ELSEWHERE
WITHIN 1200 NM S SEMICIRCLES...AND 480 NM NW AND 840 NM NE
QUADRANTS WINDS 25 TO 40 KT. SEAS 10 TO 21 FT...EXCEPT IN SW
QUADRANT 13 TO 26 FT. ALSO WITHIN 840 NM NW...960 NM NE...1500
NM SE AND 1200 NM SW QUADRANTS WINDS TO 25 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST LOW 52N162W 967 MB. BETWEEN 360 NM AND 780 NM
NE QUADRANT...BETWEEN 240 NM AND 1320 NM SE QUADRANT...AND
WITHIN 600 NM NW AND 1380 NM SW QUADRANTS WINDS 30 TO 45 KT.
SEAS 12 TO 22 FT...EXCEPT IN SW QUADRANT 17 TO 34 FT. ELSEWHERE
WITHIN 1620 NM S SEMICIRCLE AND 720 NM NW QUADRANT WINDS 20 TO
30 KT. SEAS 10 TO 20 FT.

...GALE WARNING...
.LOW 49N165E 991 MB DRIFTING S. WITHIN 420 NM SW QUADRANT WINDS
25 TO 40 KT. SEAS 8 TO 14 FT. ELSEWHERE WITHIN 180 NM NW...780
NM NE AND 240 NM SE QUADRANTS WINDS TO 25 KT. SEAS TO 9 FT.
.24 HOUR FORECAST LOW 46N164E 997 MB. WITHIN 540 NM S SEMICIRCLE
WINDS 25 TO 40 KT. SEAS 10 TO 16 FT. ELSEWHERE FROM 30N TO 54N W
OF 170W WINDS TO 25 KT. SEAS 8 TO 16 FT.
.48 HOUR FORECAST LOW 44N171E 1000 MB. WITHIN 780 NM SW QUADRANT
WINDS 25 TO 40 KT. SEAS 10 TO 17 FT. ELSEWHERE WITHIN 480 NM NW
AND 840 NM SW QUADRANT WINDS TO 25 KT. SEAS 8 TO 14 FT.

...GALE WARNING...
.LOW 44N135W 1014 MB MOVING NE 30 KT. WITHIN 540 NM NE...420 NM
SE AND 840 NM SW QUADRANTS WINDS 20 TO 30 KT. SEAS 10 TO 15 FT.
.12 HOUR FORECAST LOW 48N126W 1000 MB. WITHIN 360 NM SE QUADRANT
WINDS 25 TO 40 KT. SEAS 10 TO 15 FT.
.24 HOUR FORECAST LOW DISSIPATED INLAND. FROM 40N TO 50N BETWEEN
124W AND 140W WINDS TO 25 KT. SEAS TO 12 FT.
.48 HOUR FORECAST FROM 44N TO 51N BETWEEN 124W AND 130W WINDS TO
25 KT. SEAS TO 12 FT.

...GALE WARNING...
.FROM 30N TO 40N BETWEEN 116W AND 127W WINDS 20 TO 30 KT. SEAS 8
TO 15 FT.
.24 HOUR FORECAST FROM 30N TO 40N BETWEEN 119W AND 128W WINDS TO
25 KT. SEAS 8 TO 15 FT.
.48 HOUR FORECAST 30N TO 44N BETWEEN 116W AND 130W WINDS 25 TO
40 KT. SEAS 8 TO 14 FT.

...HEAVY FREEZING SPRAY WARNING...
.LIGHT TO MODERATE FREEZING SPRAY NE OF A LINE FROM 56N147W TO
59N179W.
.24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY NE OF A
56N171W TO 59N179E.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY NE OF A LINE
FROM 56N168W TO 60N179W.

.SYNOPSIS AND FORECAST.

.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.

.LOW 57N148W 996 MB MOVING NE 10 KT. WITHIN 300 NM N AND 600 NM
S SEMICIRCLES WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DESCRIBED BELOW.

.LOW 49N160W 1000 MB MOVING NE 20 KT. WITHIN 240 NM W
SEMICIRCLES...AND 360 NM NE AND 780 NM SE QUADRANTS WINDS 20 TO
30 KT. SEAS 10 T0 17 FT.
.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DESCRIBED BELOW.

.EXCEPT AS NOTED IN WARNINGS SECTION ABOVE FROM 30N TO 60N
BETWEEN 116W AND 170W WINDS TO 25 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST EXCEPT AS NOTED WARNINGS SECTION ABOVE FROM
30N TO 60N BETWEEN 116W AND 150W WINDS TO 25 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST EXCEPT AS NOTED IN WARNINGS SECTIONS ABOVE
FROM 30N TO 40N BETWEEN 116W AND 140W WINDS TO 25 KT. SEAS TO 12
FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM OVER FORECAST
WATERS FROM 35N TO 46N BETWEEN 127W AND 146W AND FROM 30N TO 41N
BETWEEN 171W AND 180W.
.24 HOUR FORECAST DENSE FOG FROM 30N TO 50N BETWEEN 147W AND
175W.
.48 HOUR FORECAST DENSE FOG FROM 30N TO 55N BETWEEN 135W AND
164W.

.HIGH 33N133W 1030 MB MOVING SW 15 KT.
.24 HOUR FORECAST HIGH 32N140W 1029 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

.HIGH 35N153W 1023 MB MOVING NE 25 KT.
.24 HOUR FORECAST HIGH 38N140W 1029 MB.
.48 HOUR FORECAST HIGH 39N132W 1031 MB.

.FORECASTER HOLLEY. 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 0000 UTC WED MAR 29.
24 HOUR FORECAST VALID 0000 UTC THU MAR 30.
48 HOUR FORECAST VALID 0000 UTC FRI MAR 31.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.GULF OF CALIFORNIA FROM 26N TO 29N NW TO N WINDS 20 TO 25 KT.
SEAS LESS THAN 8 FT.
.06 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.N OF 27N BETWEEN 118W AND 127W NW TO N WINDS 20 TO 25 KT. SEAS
9 TO 12 FT IN NW SWELL. ELSEWHERE N OF 20N W OF 110W WINDS 20 KT
OR LESS. SEAS 8 TO 11 FT IN NW SWELL.
.24 HOUR FORECAST N OF 28N BETWEEN 122W AND 126W N WINDS 20 TO
25 KT. SEAS 10 TO 11 FT. ELSEWHERE N OF 20N W OF 110W...EXCEPT N
OF 27N W OF 134W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NW
SWELL.
.48 HOUR FORECAST N OF 28N BETWEEN 120W AND 126W N WINDS 20 TO
25 KT. SEAS 9 TO 10 FT. ELSEWHERE N OF 20N W OF 110W...EXCEPT N
OF 27N W OF 132W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW
SWELL.

.FROM 09N TO 22N W OF 130W NE TO E WINDS 20 TO 25 KT. SEAS 9 TO
11 FT. ELSEWHERE S OF 20N W OF LINE 20N110W TO 08N120W TO
00N140W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED NE AND NW
SWELL.
.24 HOUR FORECAST FROM 07N TO 16N W OF 130W NE TO E WINDS 20 TO
25 KT. SEAS TO 9 FT. ELSEWHERE S OF 20N W OF LINE 20N110W TO
07N120W TO 02N140W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED
NE AND NW SWELL.
.48 HOUR FORECAST FROM 10N TO 20N W OF 130W AND FROM 05N TO 10N
W OF 122W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED NE AND NW
SWELL.

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

CONVECTION VALID AT 0200 UTC WED MAR 29...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
ITCZ AXIS EXTENDS FROM 06N86W TO 04N95W TO 02N103W. SCATTERED
MODERATE ISOLATED STRONG IS NOTED FROM 04N TO 07N BETWEEN 89W
AND 94W.

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.



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