High Seas Forecast
Issued by NWS

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506
FZPN01 KWBC 210354
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC MAY 21.
24 HOUR FORECAST VALID 0000 UTC MAY 22.
48 HOUR FORECAST VALID 0000 UTC MAY 23.

.WARNINGS.

...GALE WARNING...
.LOW 53N154W 982 MB MOVING NE 10 KT. WITHIN 540 NM NE...720 NM
SE...780 NM SW...AND 300 NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS
12 TO 20 FT.
.24 HOUR FORECAST LOW 54N149W 988 MB. WITHIN 480 NM E...540 NM
S...AND 600 NM W QUADRANTS WINDS 25 TO 35 KT. SEAS 10 TO 18 FT.
.48 HOUR FORECAST LOW 56N147W 1005 MB. WITHIN 300 NM N AND 1140
NM S QUADRANTS WINDS TO 25 KT. SEAS TO 12 FT.

...GALE WARNING...
.LOW W OF AREA NEAR 47N157E 984 MB MOVING NE 15 KT. OVER
FORECAST WATERS FROM 38N TO 52N W OF 173E WINDS 25 TO 40 KT.
SEAS 10 TO 18 FT.
.24 HOUR FORECAST LOW 50N164E 988 MB. WITHIN 600 NM NE...780 NM
SE...AND 540 NM SW QUADRANTS WINDS 25 TO 40 KT. SEAS 10 TO 19 FT.
.48 HOUR FORECAST LOW 54N174E 983 MB. FRONT TO EXTEND FROM
59N179E TO 52N167W TO 41N177W. WITHIN 540 NM SE AND 720 NM SW
QUADRANTS WINDS 25 TO 40 KT. SEAS 12 TO 21 FT. ELSEWHERE WITHIN
300 NM E AND NE OF THE FRONT WINDS 20 TO 30 KT. SEAS TO 12 FT.

.SYNOPSIS AND FORECAST.

.FROM 30N TO 42N BETWEEN 118W AND 131W NW WINDS 20 TO 30 KT.
SEAS TO 10 FT.
.24 HOUR FORECAST FROM 30N TO 43N BETWEEN 118W AND 128W NW WINDS
20 TO 30 KT. SEAS TO 11 FT.
.48 HOUR FORECAST FROM 30N TO 46N BETWEEN 119W AND 128W NW WINDS
TO 25 KT. SEAS TO 9 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 35N TO 40N
BETWEEN 158W AND 165W AND FROM 32N TO 46N W OF 176E.
.24 HOUR FORECAST DENSE FOG FROM 34N TO 49N BETWEEN 179W AND
169E.
.48 HOUR FORECAST DENSE FOG WITHIN 300 NM SE OF A LINE FROM
48N172W TO 37N174E.

.HIGH 32N141W 1027 MB NEARLY STATIONARY.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST HIGH 31N135W 1020 MB.

.HIGH 32N155W 1025 MB NEARLY STATIONARY.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST HIGH DISSIPATED.

.HIGH 31N176W 1026 MB MOVING NW 10 KT.
.24 HOUR FORECAST HIGH DISSIPATED.

.HIGH 39N177W 1026 MB MOVING SE 20 KT.
.24 HOUR FORECAST HIGH 38N170W 1031 MB.
.48 HOUR FORECAST HIGH 37N164W 1033 MB.

.48 HOUR FORECAST HIGH 37N169E 1024 MB.

.48 HOUR FORECAST NEW HIGH 54N132W 1017 MB.

.FORECASTER NOLT. 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 MON MAY 21.
24 HOUR FORECAST VALID 0000 UTC TUE MAY 22.
48 HOUR FORECAST VALID 0000 UTC WED MAY 23.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FROM 11N TO 13N BETWEEN 132W AND 135W NE WINDS 20 TO 25 KT. SEAS
9 TO 10 FT. ELSEWHERE WITHIN AREA BOUNDED BY 22N140W TO 15N130W
TO 11N130W TO 11N140W TO 22N140W WINDS 20 KT OR LESS. SEAS 8 TO 9
FT IN MIXED NE AND SW SWELL.
.24 HOUR FORECAST FROM 19N140W TO 16N130W TO 11N130W TO 10N140W
TO 19N140W WINDS 20 KT OR LESS. SEAS TO 9 FT PRIMARILY IN NE
SWELL.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.WITHIN AREA BOUNDED BY 00N130W TO 15N130W TO 08N100W TO 03.4S90W
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN SW SWELL.
.24 HOUR FORECAST LOW PRES NEAR 11N126W 1011 MB. FROM 10N TO 14N
BETWEEN 120W AND 130W WINDS 20 KT OR LESS. SEAS TO 9 FT IN MIXED
NE WIND WAVES AND SW SWELL. ELSEWHERE WITHIN AREA BOUNDED BY
03.4S120W TO 14N120W TO 20N110W TO 03.4S85W WINDS 20 KT OR LESS.
SEAS 8 TO 10 FT IN SW SWELL.
.48 HOUR FORECAST LOW PRES NEAR 11N127W 1010 MB. WITHIN 150 NM NW
SEMICIRCLE WINDS 20 KT OR LESS. SEAS 8 FT PRIMARILY IN NE SWELL.
WITHIN AREA BOUNDED BY 26N115W TO 03N88W TO 05N100W TO 12N113W TO
26N115W WINDS 20 KT OR LESS. SEAS 8 FT IN SW SWELL.

.N OF 29N BETWEEN 118W AND 122W WINDS 20 KT OR LESS. SEAS 8 FT IN
NW SWELL.
.24 HOUR FORECAST N OF 28N BETWEEN 115W AND 123W WINDS 20 KT OR
LESS. SEAS 8 FT IN MIXED NW AND SW 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 0230 UTC MON MAY 21...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 11N85W TO 10N130W. ITCZ FROM 10N130W TO
BEYOND 10N140W. SCATTERED MODERATE TO STRONG CONVECTION FROM 06N
TO 09N BETWEEN 85W AND 90W AND FROM 08N TO 11N BETWEEN 105W AND
115W. SCATTERED MODERATE FROM 10N TO 12N BETWEEN 130W AND 135W.

$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.



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