High Seas Forecast
Issued by NWS

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000
FZPN01 KWBC 260959
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC THU APR 26 2018

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

SEE ANNOUNCEMENT OF PLANNED INMARSAT I-3 TO I-4 MIGRATION
IN 2018 AT OCEAN.WEATHER.GOV/GMDSS_NOTICE.PHP (LOWERCASE).

SECURITE

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

SYNOPSIS VALID 0600 UTC APR 26.
24 HOUR FORECAST VALID 0600 UTC APR 27.
48 HOUR FORECAST VALID 0600 UTC APR 28.

.WARNINGS.

...STORM WARNING...
.24 HOUR FORECAST WITHIN 720 NM W OF A FRONT TO EXTEND FROM
40N153W TO 30N163W AREA OF N TO NE WINDS 20 TO 30 KT. SEAS TO 11
FT.
.30 HOUR FORECAST NEW LOW 35N157W 1013 MB. OVER FORECAST WATERS
WITHIN 780 NM SW AND 420 NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS
8 TO 12 FT.
.42 HOUR FORECAST LOW 36N158W 1005 MB. BETWEEN 120 NM AND 240 NM
NW SEMICIRCLE WINDS 40 TO 50 KT. SEAS 17 TO 22 FT.
.48 HOUR FORECAST LOW 34N159W 1002 MB. BETWEEN 120 NM AND 300 NM
NW SEMICIRCLE WINDS 40 TO 55 KT. SEAS 16 TO 28 FT. ELSEWHERE
FROM 30N TO 42N BETWEEN 145W AND 170W WINDS 25 TO 40 KT. SEAS 9
TO 18 FT.

...GALE WARNING...
.LOW W OF AREA NEAR 46N151E 989 MB MOVING NE 30 KT. OVER
FORECAST WATERS WITHIN 480 NM E AND 720 NM SE QUADRANTS WINDS 25
TO 35 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW W OF AREA NEAR 54N164E 980 MB. WITHIN 480
NM E...900 NM SE...AND 480 NM S QUADRANTS WINDS 30 TO 45 KT.
SEAS 11 TO 20 FT.
.48 HOUR FORECAST LOW 59N171W 990 MB. WITHIN 300 NM E...720 NM
SE...AND 480 NM SW QUADRANTS WINDS 25 TO 40 KT. SEAS 8 TO 16 FT.

...GALE WARNING...
.OVER FORECAST WATERS FROM 51N TO 57N W OF 177E AREA OF SW WINDS
TO 25 KT. SEAS TO 10 FT.
.24 HOUR FORECAST NEW LOW 62N170W 998 MB. BETWEEN 180 NM AND 480
NM SE AND S QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.

...GALE WARNING...
.42 HOUR FORECAST LOW JUST W OF AREA 40N159E 1004 MB. OVER
FORECAST WATERS WITHIN 600 NM E AND 360 NM SE QUADRANTS WINDS 25
TO 40 KT. SEAS 9 TO 14 FT.
.48 HOUR FORECAST LOW 44N166E 1000 MB. WITHIN 360 NM E AND
SE...AND 540 NM SW QUADRANTS WINDS 30 TO 45 KT. SEAS 9 TO 17 FT.

...HEAVY FREEZING SPRAY WARNING.
.MODERATE TO HEAVY FREEZING SPRAY N OF 61N W OF THE ALASKAN
COAST.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.SYNOPSIS AND FORECAST.

.LOW JUST NW OF AREA NEAR 64N172W 994 MB NEARLY STATIONARY NEXT
06 HOURS THEN WILL MOVE NE. OVER ICE FREE FORECAST WATERS WITHIN
240 NM SE SEMICIRCLE WINDS 20 TO 30 KT. SEAS TO 11 FT. ELSEWHERE
BETWEEN 480 NM AND 960 NM SE AND 300 NM AND 660 NM SW QUADRANTS
WINDS TO 25 KT. SEAS 8 TO 15 FT WITH W TO SW SWELL.
.24 HOUR FORECAST LOW N OF AREA. ASSOCIATED CONDITIONS
DIMINISHED.

.LOW 43N169E 1024 MB MOVING NE 25 KT. WITHIN 180 NM S QUADRANT
WINDS TO 25 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.

.48 HOUR FORECAST OVER FORECAST WATERS WITHIN AN AREA BOUNDED BY
A LINE FROM 47N136W TO 52N129W TO 45N138W TO 47N136W AREA OF N
TO NW WINDS 20 TO 30 KT. SEAS TO 12 FT.

.48 HOUR FORECAST OVER FORECAST WATERS FROM 30N TO 35N E OF 122W
AREA OF NW WINDS 20 TO 30 KT. SEAS TO 11 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM OVER FORECAST
WATERS FROM 30N TO 46N W OF 164E.
.24 HOUR FORECAST DENSE FOG FROM 42N TO 53N BETWEEN 179W AND
168E AND FROM 31N TO 37N W OF 165E.
.48 HOUR FORECAST DENSE FOG FROM 40N TO 47N BETWEEN 170W AND
169E AND FROM 36N TO 48N W OF 169E.

.HIGH 38N151W 1031 MB MOVING E 10 KT.
.24 HOUR FORECAST HIGH 37N147W 1025 MB.
.48 HOUR FORECAST HIGH 36N139W 1026 MB.

.HIGH 37N179W 1035 MB MOVING NE 10 KT.
.24 HOUR FORECAST HIGH 39N175W 1037 MB.
.48 HOUR FORECAST HIGH 38N174W 1035 MB.

.48 HOUR FORECAST NEW HIGH 47N155W 1034 MB.

.FORECASTER BELL. 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 APR 26.
24 HOUR FORECAST VALID 0600 UTC FRI APR 27.
48 HOUR FORECAST VALID 0600 UTC SAT APR 28.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FROM 08N TO 19N W OF 125W WINDS 20 KT OR LESS. SEAS 8 FT IN
MIXED NW AND NE SWELL.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST FROM 11N TO 20N BETWEEN W OF 130W WINDS 20 KT
OR LESS. SEAS 8 FT IN NW SWELL.

.06 HOUR FORECAST FROM 21N TO 25N BETWEEN 110W AND 115W WINDS 20
KT OR LESS. SEAS TO 8 FT IN NW SWELL.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.18 HOUR FORECAST FROM 21N TO 24N BETWEEN 111W AND 115W NW WINDS
20 TO 25 KT. SEAS 8 FT.
.24 HOUR FORECAST FROM 20N TO 23N BETWEEN 108W AND 113W WINDS 20
KT OR LESS. SEAS 8 FT IN NW SWELL
.48 HOUR FORECAST 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 0930 UTC THU APR 26...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH FROM 07N78W TO 08N100W. ITCZ FROM 08N100W TO
BEYOND 06N140W. SCATTERED MODERATE N OF 04N BETWEEN 80W AND 87W.
SCATTERED MODERATE CONVECTION ALONG THE ITCZ FROM 03N TO 12N
BETWEEN 110W AND 125W.


$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.


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