High Seas Forecast
Issued by NWS

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000
FZPN01 KWBC 212151
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC MON MAY 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC MAY 21.
24 HOUR FORECAST VALID 1800 UTC MAY 22.
48 HOUR FORECAST VALID 1800 UTC MAY 23.

.WARNINGS.

...GALE WARNING...
.COMPLEX LOW WITH MEAN CENTER 55N149W 985 MB MOVING NE 05 KT.
FRONT EXTENDS FROM 59N143W TO 55N136W TO 52N134W. WITHIN 90 NM
NE AND E OF FRONT AND BETWEEN 180 NM AND 600 NM S QUADRANT WINDS
25 TO 35 KT. SEAS 9 TO 15 FT. ELSEWHERE WITHIN 720 NM SE...780
NM W AND 1020 NM S QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST MERGED LOW 56N148W 998 MB. BETWEEN 240 NM AND
360 NM N AND NE QUADRANTS AND FROM 39N TO 53N BETWEEN 135W AND
159W WINDS TO 25 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW 55N147W 1006 MB. WINDS LESS THAN 25 KT.
SEAS LESS THAN 8 FT.

...GALE WARNING...
.LOW 49N162E 984 MB MOVING NE 15 KT. FRONT EXTENDS FROM 53N167E
TO 46N176E TO 35N168E. OVER FORECAST WATERS W OF A LINE FROM
38N166E TO 46N170E TO 52N168E WINDS 25 TO 40 KT. SEAS 11 TO 20
FT. ELSEWHERE WITHIN 240 NM NE AND E OF FRONT WINDS 20 TO 30 KT.
SEAS 8 TO 13 FT.
.24 HOUR FORECAST LOW 53N169E 981 MB. FRONT TO EXTEND FROM
58N177E TO 50N171W TO 40N177W. WITHIN 540 NM SE AND 660 NM SW
QUADRANTS WINDS 25 TO 40 KT. SEAS 11 TO 21 FT. ELSEWHERE WITHIN
180 NM NE AND E OF FRONT...EXCEPT 300 NM SE OF FRONT S OF 49N
WINDS 20 TO 30 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW 54N178W 986 MB. WITHIN 420 NM S AND 480 NM
SE QUADRANTS WINDS 25 TO 35 KT. SEAS 11 TO 19 FT. ELSEWHERE
BETWEEN 300 NM AND 540 NM N QUADRANT AND FROM 43N TO 53N BETWEEN
164W AND 169E WINDS 20 TO 30 KT. SEAS TO 12 FT.

...GALE WARNING...
.48 HOUR FORECAST FROM 30N TO 37N BETWEEN 160E AND 170E WINDS 25
TO 35 KT. SEAS TO 12 FT.

.SYNOPSIS AND FORECAST.

.OVER FORECAST WATERS E OF A LINE FROM 32N124W TO 37N127W TO
43N122W AREA OF N TO NW WINDS 20 TO 30 KT. SEAS TO 11 FT.
.24 HOUR FORECAST FROM 38N TO 44N BETWEEN 124W AND 127W AREA OF
N TO NW WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST CONDITIONS DIMINISHED.

.N OF 60N BETWEEN 166W AND 172W AREA OF N TO NW WINDS TO 25 KT.
SEAS TO 8 FT.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.48 HOUR FORECAST NEW LOW 41N132W 1011 MB. FRONT TO EXTEND FROM
LOW CENTER TO 34N134W TO 30N136W. WITHIN 300 NM W AND NW OF THE
FRONT WINDS TO 25 KT. SEAS TO 9 FT.

.48 HOUR FORECAST WITHIN 300 NM S OF A LINE FROM 45N150W TO
44N160W TO 42N168W WINDS TO 25 KT. SEAS TO 10 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 34N TO 48N
BETWEEN 178W AND 169E.
.24 HOUR FORECAST DENSE FOG WITHIN 240 NM SE OF A LINE FROM
48N171W TO 44N178W TO 37N177E.
.48 HOUR FORECAST DENSE FOG FROM 35N TO 39N BETWEEN 174W AND
170E.

.HIGH 31N141W 1026 MB NEARLY STATIONARY.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST HIGH DISSIPATED.

.HIGH 39N172W 1030 MB MOVING SE 15 KT.
.24 HOUR FORECAST HIGH 37N165W 1032 MB.
.48 HOUR FORECAST HIGH 35N158W 1031 MB.

.24 HOUR FORECAST HIGH 37N162E 1022 MB.
.48 HOUR FORECAST HIGH 40N179E 1022 MB.

.FORECASTER KOSIER. 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 1800 UTC MON MAY 21.
24 HOUR FORECAST VALID 1800 UTC TUE MAY 22.
48 HOUR FORECAST VALID 1800 UTC WED MAY 23.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.AREA BOUNDED BY 22N140W TO 16N127W TO 15N120W TO 10N120W TO
10N140W TO 22N140W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED
SWELL.
.24 HOUR FORECAST LOW PRES NEAR 10.5N126W 1010 MB. FROM 10N TO
16N BETWEEN 118W AND 140W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN
MIXED NE AND SW SWELL.
.48 HOUR FORECAST LOW PRES NEAR 11N126W 1011 MB. FROM 09.5N TO
14N W OF 122W WINDS 20 KT OR LESS. SEAS TO 8 FT IN MIXED SWELL.

.AREA S OF LINE FROM 00N130W TO 09N123W TO 15N120W TO 20N108W TO
07N90W TO 01S92W TO 01N80.5W WINDS 20 KT OR LESS. SEAS 8 TO 12
FT IN SW SWELL...HIGHEST NEAR 05N105W. FROM 21N TO 23N BETWEEN
107W AND 112W WINDS 20 KT OR LESS. SEAS TO 8 FT IN MIXED NW AND
SW SWELL.
.24 HOUR FORECAST S OF 26N BETWEEN 88W AND 118W WINDS 20 KT OR
LESS. SEAS 8 TO 10 FT IN SW SWELL...EXCEPT MIXED NW AND SW SWELL
NW PART. S OF 03.5N BETWEEN 80W AND 88W WINDS 20 KT OR LESS.
SEAS TO 9 FT IN SW SWELL.
.48 HOUR FORECAST FROM 10N TO 24N BETWEEN 103W AND 116W WINDS 20
KT OR LESS. SEAS TO 8 FT IN MIXED NW AND SW SWELL. FROM 02N TO
15N BETWEEN 87W AND 103W...AND FROM 00N TO 03.5N BETWEEN 80W AND
87W...WINDS 20 KT OR LESS. SEAS TO 8 FT IN SW SWELL.

.N OF 28.5N BETWEEN 118W AND 124W WINDS 20 KT OR LESS. SEAS TO 8
FT IN NW SWELL.
.24 HOUR FORECAST N OF 26N BETWEEN 124W AND COAST OF BAJA
CALIFORNIA WINDS 20 KT OR LESS. SEAS TO 8 FT IN MIXED NW AND SW
SWELL.
.42 HOUR FORECAST N OF 26N E OF 122W 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 2030 UTC MON MAY 21...

.SCATTERED MODERATE TO STRONG WITHIN 120 NM OF COAST BETWEEN 90W
AND 97W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH EXTENDS FROM 09.5N74W TO 11N94W TO 09.5N115W TO
08N133W. THE ITCZ EXTENDS FROM 08N134W TO BEYOND 09.5N140W.
SCATTERED MODERATE TO STRONG CONVECTION FROM 04.5N TO 11N
BETWEEN COAST OF COLOMBIA AND 100W. WIDELY SCATTERED MODERATE
ISOLATED STRONG FROM 05N TO 11.5N BETWEEN 100W AND 124W. WIDELY
SCATTERED MODERATE TO STRONG WITHIN 180 NM N OF AXIS BETWEEN
133W AND 140W.

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.


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