High Seas Forecast
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770
FZPN02 KWBC 261725
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1745 UTC THU APR 26 2018

CCODE/1:31:12:01:00/AOW+POR/NWS/CCODE
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 APR 26.
24 HOUR FORECAST VALID 1200 UTC APR 27.
48 HOUR FORECAST VALID 1200 UTC APR 28.

.WARNINGS.

...STORM WARNING...
.18 HOUR FORECAST NEW LOW 36N157W 1016 MB. FRONT TO EXTEND FROM
40N153W TO LOW CENTER TO 30N162W. WITHIN 720 NM W OF THE FRONT
AREA OF N TO NE WINDS 20 TO 30 KT. SEAS TO 11 FT.
.24 HOUR FORECAST LOW 36N156W 1014 MB. OVER FORECAST WATERS
WITHIN 420 NM N QUADRANT AND FROM 30N TO 40N BETWEEN 157W AND
173W WINDS 25 TO 35 KT. SEAS 8 TO 12 FT.
.36 HOUR FORECAST LOW 36N158W 1007 MB. WITHIN 300 NM NW
SEMICIRCLE WINDS 35 TO 50 KT. SEAS 11 TO 21 FT.
.48 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER 32N159W 1000 MB.
FRONT TO EXTEND FROM 32N160W TO 35N155W TO 34N149W. WITHIN 180
NM NW AND N OF FRONT WINDS 40 TO 55 KT. SEAS 15 TO 26 FT.
ELSEWHERE FROM 30N TO 41N BETWEEN 142W AND 169W WINDS 25 TO 40
KT. SEAS 9 TO 18 FT.

...GALE WARNING...
.LOW W OF AREA NEAR 48N152E 983 MB MOVING NE 30 KT. OVER
FORECAST WATERS WITHIN 600 NM E AND 840 NM SE QUADRANTS WINDS 30
TO 45 KT. SEAS 8 TO 15 FT.
.24 HOUR FORECAST LOW NW OF AREA NEAR 55N167E 981 MB. WITHIN 900
NM SE QUADRANT WINDS 30 TO 40 KT. SEAS 9 TO 18 FT. ELSEWHERE
WITHIN 480 NM NE AND 720 NM SW QUADRANTS...AND WITHIN 360 NM SE
OF A FRONT TO EXTEND FROM 41N171E TO 37N160E WINDS 20 TO 30 KT.
SEAS 8 TO 16 FT.
.48 HOUR FORECAST LOW 59N167W 995 MB. BETWEEN 180 NM AND 780 NM
SE AND BETWEEN 180 NM AND 540 NM SW QUADRANTS WINDS 25 TO 35 KT.
SEAS 8 TO 16 FT...HIGHEST NEAR 53N161W.

...GALE WARNING...
.LOW NW OF AREA NEAR 62N177E 999 MB MOVING E 20 KT. OVER
FORECAST WATERS FROM 51N TO 60N W OF 175E AREA OF SW TO W WINDS
20 TO 30 KT. SEAS TO 10 FT.
.12 HOUR FORECAST LOW 61N174W 997 MB. FROM 52N TO 61N BETWEEN
164W AND 178E WINDS 25 TO 35 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW 61N164W 999 MB. FROM 51N TO 60N BETWEEN
153W AND 170W WINDS 25 TO 35 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW 49N127W 1010 MB. OVER FORECAST WATERS
FROM 51N TO 57N BETWEEN 130W AND 137W AREA OF NW TO N WINDS 20
TO 30 KT. SEAS TO 9 FT.
.36 HOUR FORECAST LOW 50N128W 1010 MB. WITHIN 480 NM NW
QUADRANTS WINDS 25 TO 35 KT. SEAS TO 11 FT.
.48 HOUR FORECAST LOW 49N129W 1012 MB. WITHIN 360 NM W AND 480
NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 13 FT.

...GALE WARNING...
.30 HOUR FORECAST LOW W OF AREA NEAR 38N156E 1003 MB. OVER
FORECAST WATERS WITHIN 600 NM E QUADRANT WINDS 20 TO 30 KT. SEAS
TO 10 FT.
.36 HOUR FORECAST LOW 40N161E 1002 MB. WITHIN 660 NM E AND 540
NM S AND SW QUADRANTS WINDS 25 TO 40 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST LOW 48N172E 997 MB. WITHIN 660 NM SE AND 1020
NM S QUADRANTS WINDS 25 TO 40 KT. SEAS 9 TO 18 FT.

.SYNOPSIS AND FORECAST.

.LOW 64N171W 992 MB MOVING N 10 KT. OVER ICE FREE FORECAST
WATERS WITHIN 240 NM SE AND S QUADRANTS WINDS 20 TO 30 KT. SEAS
TO 9 FT. ELSEWHERE WITHIN 1080 NM SE OF A LINE FROM 58N150W TO
49N178W WINDS TO 25 KT. SEAS 8 TO 13 FT WITH W TO SW SWELL.
.24 HOUR FORECAST LOW N OF AREA. ASSOCIATED CONDITIONS
DIMINISHED.

.LOW 42N176E 1028 MB MOVING N 25 KT. WITHIN 120 NM OF LOW CENTER
WINDS TO 25 KT. SEAS TO 10 FT.
.12 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.

.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 W OF A LINE FROM 32N163E TO 44N169E TO 50N160E.
.24 HOUR FORECAST DENSE FOG FROM 42N TO 55N BETWEEN 177W AND
172E...W OF A LINE FROM 32N163E TO 39N168E...AND FROM 44N TO 47N
W OF 162E.
.48 HOUR FORECAST DENSE FOG W OF A LINE FROM 31N160E TO 42N174E
TO 48N167E TO 49N170E.

.HIGH 37N150W 1028 MB MOVING E 10 KT.
.24 HOUR FORECAST HIGH 37N144W 1025 MB.
.48 HOUR FORECAST HIGH 36N140W 1026 MB.

.HIGH 38N178W 1035 MB MOVING E 05 KT.
.24 HOUR FORECAST HIGH 38N174W 1037 MB.
.48 HOUR FORECAST HIGH 37N175W 1034 MB.

.HIGH 45N180W 1033 MB MOVING E 20 KT.
.24 HOUR FORECAST HIGH 44N168W 1036 MB.
.48 HOUR FORECAST HIGH 47N152W 1033 MB.

.FORECASTER HUFFMAN. 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 THU APR 26.
24 HOUR FORECAST VALID 1200 UTC FRI APR 27.
48 HOUR FORECAST VALID 1200 UTC SAT APR 28.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FROM 08N TO 16N W OF 123W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT
IN MIXED NE AND NW SWELL.
.24 HOUR FORECAST FROM 09N TO 14N W OF 126W WINDS 20 KT OR LESS.
SEAS TO 8 FT IN MIXED NE AND NW SWELL.
.48 HOUR FORECAST FROM 08N TO 22N W OF 130W WINDS 20 KT OR LESS.
SEAS 8 TO 9 FT IN MIXED NE AND NW SWELL.

.06 HOUR FORECAST FROM 22N TO 26N BETWEEN 112W AND 116W WINDS 20
KT OR LESS. SEAS TO 8 FT IN NW SWELL.
.24 HOUR FORECAST FROM 19N TO 24N BETWEEN 109W AND 114W WINDS 20
KT OR LESS. SEAS TO 8 FT IN NW SWELL.
.36 HOUR FORECAST N OF 26N E OF 117W NW WINDS 20 TO 25 KT. SEAS
TO 8 FT.
.48 HOUR FORECAST N OF 27N E OF 118W NW WINDS 20 TO 25 KT. SEAS
8 TO 9 FT. ELSEWHERE N OF 25N E OF 121W WINDS 20 KT OR LESS.
SEAS 8 FT IN NW SWELL.

.48 HOUR FORECAST N OF 15N BETWEEN 94W AND 96W...INCLUDING THE
GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 25 KT. SEAS TO 8 FT.

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

CONVECTION VALID AT 1445 UTC THU APR 26...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH FROM 11N86W TO 08N100W. ITCZ FROM 08N100W TO
09N115W TO BEYOND 05N140W. SCATTERED MODERATE ISOLATED STRONG
FROM 04N TO 10N BETWEEN 80W AND 87W. SCATTERED MODERATE FROM 04N
TO 11N BETWEEN 115W AND 129W.

.FORECASTER LATTO. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 1200 UTC APR 26 2018.
24 HOUR FORECAST VALID 1200 UTC APR 27 2018.
48 HOUR FORECAST VALID 1200 UTC APR 28 2018.

.WARNINGS.

...GALE WARNING...
.COLD FRONT FROM 30N171W TO 27N179W MOVING ESE 10 KT. WINDS
INCREASING TO E TO NE 20 TO 25 KT OVER FORECAST WATERS N OF
FRONT.
.24 HOUR FORECAST FRONT FROM 30N150W TO 28N165W TO 27N172W.
TROUGH FROM 24N160W TO 28N160W. WINDS N TO NE 20 TO 30 KT OVER
FORECAST WATERS N OF FRONT.
.36 HOUR FORECAST FRONT FROM 30N156W TO 27N158W TO 26N163W TO
24N167W. TROUGH FROM 20N161W TO 27N163W. WINDS NW TO NE 20 TO 30
KT OVER FORECAST WATERS N OF FRONT. WINDS INCREASING TO SE TO S
20 TO 30 KT N OF 27N WITHIN 210 NM E OF FRONT.
.48 HOUR FORECAST FRONT FROM 30N152W TO 26N154W TO 23N157W.
TROUGH FROM 18N159W TO 21N163W TO 19N169W. TROUGH MERGED WITH
FRONT. WINDS NW TO NE 20 TO 30 KT OVER FORECAST WATERS N OF
FRONT. WINDS SE TO S 30 TO 40 KT N OF 26N WITHIN 210 NM E OF
FRONT. WINDS SE TO SW 20 TO 30 KT ELSEWHERE N OF 23N WITHIN 660
NM E OF FRONT. ASSOCIATED SEAS INCLUDED BELOW.

.SYNOPSIS AND FORECAST.

.RIDGE FROM 30N163E TO 29N160E.
.48 HOUR FORECAST RIDGE FROM 30N171E TO 26N160E.

.OTHERWISE AND ELSEWHERE WINDS E TO NE 20 TO 30 KT WITHIN A
POLYGON BOUND BY 26N179W 16N155W 09N160W 11N179W 09N160E 20N160E
26N179W.
.24 HOUR FORECAST WIND NE 20 TO 30 KT WITHIN A POLYGON BOUND BY
30N174E 30N172W 15N172W 09N160E 22N160E 30N174E.
.48 HOUR FORECAST WINDS NE TO E 20 TO 30 KT WITHIN A POLYGON
BOUND BY 30N169W 15N169W 11N164E 23N164E 30N169W.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.SEAS 8 TO 11 FT WITHIN A POLYGON BOUND BY 30N174E 30N159W
21N168W 13N160W 08N172E 08N160E 23N160E 30N174E.
.24 HOUR FORECAST SEAS 8 TO 12 FT WITHIN A POLYGON BOUND BY
30N172E 30N158W 23N167W 15N164W 09N176E 09N160E 24N160E 30N172E.
.48 HOUR FORECAST SEAS BUILDING TO 13 TO 16 FT N OF 28N BETWEEN
165W AND 158W. SEAS 8 TO 13 FT ELSEWHERE WITHIN A POLYGON BOUND
BY 30N165E 30N144W 25N144W 15N169W 10N174E 10N160E 24N160E
30N165E.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

.ITCZ FROM 10N155W TO 09N161W TO 11N170W TO 09N179W TO 06N170E
TO 06N160E. NUMEROUS STRONG TSTMS WITHIN 210 NM N OF CONVERGENCE
LINE W OF 179W. SCATTERED MODERATE TO STRONG TSTMS ELSEWHERE
WITHIN 360 NM OF CONVERGENCE LINE W OF 179W. ALSO SCATTERED
MODERATE TSTMS WITHIN 240 NM OF CONVERGENCE LINE E OF 179W.

$$

.FORECASTER BEDAL. HONOLULU HI.



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