High Seas Forecast
Issued by NWS

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000
FZPN01 KWBC 211544
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC MAY 21.
24 HOUR FORECAST VALID 1200 UTC MAY 22.
48 HOUR FORECAST VALID 1200 UTC MAY 23.

.WARNINGS.

...GALE WARNING...
.LOW 55N150W 984 MB MOVING NE 05 KT. FRONT EXTENDS FROM 58N147W
TO 57N141W TO 53N137W. WITHIN 120 NM N AND NE OF FRONT AND
BETWEEN 240 NM AND 660 NM S QUADRANT WINDS 25 TO 35 KT. SEAS 10
TO 17 FT. ELSEWHERE WITHIN 720 NM SE...780 NM W AND 960 NM S
QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST LOW 56N146W 994 MB. WITHIN 300 NM E AND NE
QUADRANTS AND FROM 39N TO 55N BETWEEN 140W AND 160W WINDS 20 TO
30 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST LOW 55N147W 1004 MB. BETWEEN 360 NM AND 900 NM
S QUADRANT WINDS TO 25 KT. SEAS TO 9 FT.

...GALE WARNING...
.LOW 48N160E 985 MB MOVING NE 15 KT. FRONT EXTENDS FROM 52N165E
TO 46N173E TO 37N168E. OVER FORECAST WATERS WITHIN 300 NM E AND
420 NM S QUADRANTS AND WITHIN 180 NM NE AND E OF FRONT N OF 44N
WINDS 25 TO 40 KT. SEAS 10 TO 20 FT...HIGHEST S OF LOW.
ELSEWHERE WITHIN 240 NM NE AND E OF FRONT WINDS 20 TO 30 KT.
SEAS TO 12 FT.
.24 HOUR FORECAST LOW 52N169E 983 MB. FRONT TO EXTEND FROM
57N176E TO 50N174W TO 39N178E. WITHIN 480 NM SE AND 600 NM SW
QUADRANTS WINDS 25 TO 40 KT. SEAS 11 TO 21 FT. ELSEWHERE WITHIN
300 NM E AND NE OF THE FRONT WINDS 20 TO 30 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW 54N178E 985 MB. WITHIN 420 NM S AND 480 NM
SE QUADRANTS WINDS 25 TO 35 KT. SEAS 12 TO 20 FT. ELSEWHERE
BETWEEN 360 NM AND 600 NM N QUADRANT AND FROM 40N TO 54N BETWEEN
155W AND 165E WINDS 20 TO 30 KT. SEAS TO 12 FT.

.SYNOPSIS AND FORECAST.

.OVER FORECAST WATERS E OF A LINE FROM 30N122W TO 36N127W TO
41N127W AREA OF N TO NW WINDS 20 TO 30 KT. SEAS TO 11 FT.
.24 HOUR FORECAST FROM 36N TO 43N BETWEEN 123W AND 127W AREA OF
N TO NW WINDS 20 TO 30 KT. SEAS TO 11 FT.
.48 HOUR FORECAST CONDITIONS DIMINISHED.

.N OF 60N BETWEEN 167W AND 173W AREA OF N TO NW WINDS 20 TO 30
KT. SEAS TO 8 FT.
.24 HOUR FORECAST N OF 62N BETWEEN 164W AND 169W NW WINDS TO 25
KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST CONDITIONS DIMINISHED.

.48 HOUR FORECAST NEW LOW 40N133W 1011 MB. FRONT TO EXTEND FROM
LOW CENTER TO 34N136W TO 30N140W. WITHIN 300 NM W AND NW OF THE
FRONT WINDS TO 25 KT. SEAS TO 10 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 34N TO 48N
BETWEEN 180W AND 167E.
.24 HOUR FORECAST DENSE FOG WITHIN 360 NM E OF A LINE FROM
50N176W TO 44N178E TO 36N174E.
.48 HOUR FORECAST DENSE FOG WITHIN 180 NM SE OF A LINE FROM
44N170W TO 37N179E AND FROM 42N TO 45N BETWEEN 169E AND 161E.

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

.HIGH 39N174W 1030 MB MOVING SE 15 KT.
.24 HOUR FORECAST HIGH 37N167W 1031 MB.
.48 HOUR FORECAST HIGH 36N160W 1032 MB.

.48 HOUR FORECAST HIGH 38N177E 1023 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 1200 UTC MON MAY 21.
24 HOUR FORECAST VALID 1200 UTC TUE MAY 22.
48 HOUR FORECAST VALID 1200 UTC WED MAY 23.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.AREA BOUNDED BY 21N140W TO 13N128W TO 11N128W TO 11N140W TO
21N140W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. ELSEWHERE
FROM 09N TO 16N W OF 123W WINDS 20 KT OR LESS. SEAS TO 9 FT IN
MIXED SWELL.
.24 HOUR FORECAST LOW PRES NEAR 10.5N126W 1009 MB. FROM 10N TO
15N BETWEEN 116W AND 128W WINDS 20 KT OR LESS. SEAS TO 9 FT IN
MIXED NE AND SW SWELL. FROM 10.5N TO 14N W OF 130W NE TO E WINDS
20 TO 25 KT. SEAS 8 TO 9 FT. ELSEWHERE FROM 10N TO 17N W OF 130W
WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED NE AND SW SWELL.
.48 HOUR FORECAST LOW PRES NEAR 11N128W 1009 MB. FROM 10N TO 13N
W OF 120W WINDS 20 KT OR LESS. SEAS TO 8 FT IN MIXED SWELL.

.AREA S OF LINE FROM 00N130W TO 09N123W TO 16N123W TO 20N108W TO
07N90W TO 01S92W TO 01N80.5W WINDS 20 KT OR LESS. SEAS 8 TO 12
FT IN SW SWELL...HIGHEST NEAR 03N106W. 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 25N BETWEEN 90W AND 115W WINDS 20 KT OR
LESS. SEAS 8 TO 10 FT IN SW SWELL...EXCEPT MIXED NW AND SW SWELL
NW PART. S OF 02.5N BETWEEN 80W AND 90W WINDS 20 KT OR LESS.
SEAS TO 9 FT IN SW SWELL.
.48 HOUR FORECAST S OF 26N BETWEEN 90W AND 116W WINDS 20 KT OR
LESS. SEAS TO 8 FT IN PRIMARILY SW SWELL...EXCEPT MIXED NW AND
SW SWELL NW PART. S OF 04N BETWEEN 80W AND 90W WINDS 20 KT OR
LESS. SEAS TO 8 FT IN SW SWELL.

.N OF 29N BETWEEN 118W AND 123W WINDS 20 KT OR LESS. SEAS TO 8
FT IN NW SWELL.
.24 HOUR FORECAST N OF 25N BETWEEN 122W AND COAST OF BAJA
CALIFORNIA WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED NW AND SW
SWELL.
.48 HOUR FORECAST N OF 26N E OF 121W 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 1500 UTC MON MAY 21...

.SCATTERED MODERATE TO STRONG WITHIN 150 NM OF COAST BETWEEN 90W
AND 95W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH EXTENDS FROM 09N74W TO 12N97W TO 08N123W TO
10N128W. THE ITCZ EXTENDS FROM 08.5N135W TO BEYOND 09N140W.
SCATTERED MODERATE TO STRONG FROM 04.5N TO 11N BETWEEN COAST OF
COLOMBIA AND 105W...AND FROM 05N TO 11N BETWEEN 107W AND 124W.
SCATTERED MODERATE TO STRONG WITHIN 180 NM N OF ITCZ BETWEEN
134W AND 140W.

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.



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