High Seas Forecast
Issued by NWS

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000
FZPN02 KWBC 301125
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1145 UTC SUN APR 30 2017

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

SECURITE

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

SYNOPSIS VALID 0600 UTC APR 30.
24 HOUR FORECAST VALID 0600 UTC MAY 01.
48 HOUR FORECAST VALID 0600 UTC MAY 02.

.WARNINGS.

...GALE WARNING...
.LOW 54N131W 1001 MB MOVING E 15 KT. FROM 49N TO 53N BETWEEN
128W AND 137W WINDS 25 TO 40 KT. SEAS 10 TO 20 FT. ELSEWHERE
OVER FORECAST WATERS WITHIN 120 NM NE SEMICIRCLE...300 NM W AND
480 NM S QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 16 FT...HIGHEST
IN S QUADRANT.
.24 HOUR FORECAST LOW DISSIPATED INLAND. CONDITIONS DIMINISHED.

...GALE WARNING...
.LOW 53N176W 989 MB MOVING NE 20 KT. FROM 45N TO 50N BETWEEN
170W AND 176E WINDS 25 TO 40 KT. SEAS 13 TO 22 FT. ELSEWHERE
OVER FORECAST WATERS WITHIN 660 NM S AND SW SEMICIRCLES WINDS 20
TO 30 KT. SEAS 9 TO 17 FT.
.24 HOUR FORECAST LOW 56N164W 993 MB. BETWEEN 240 NM AND 600 NM
S AND SE QUADRANTS WINDS 20 TO 30 KT. SEAS 9 TO 16 FT.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS MERGED WITH LOW
51N164W DESCRIBED BELOW.

...GALE WARNING...
.LOW 56N175W 985 MB MOVING SW 10 KT NEXT 12 HOURS THEN TURNING
SE 15 KT. FRONT EXTENDS FROM THE LOW TO 56N166W TO 52N157W TO
47N157W TO 37N168W. WITHIN 180 NM E OF FRONT FROM 43N TO 52N
WINDS 25 TO 40 KT. SEAS 9 TO 15 FT. ELSEWHERE OVER FORECAST
WATERS WITHIN 420 NM N SEMICIRCLE AND WITHIN 240 NM NE AND E OF
FRONT WINDS 20 TO 30 KT. SEAS IN ICE FREE WATERS 8 TO 13 FT...
EXCEPT IN BERING SEA E OF 165W 8 FT OR LESS.
.24 HOUR FORECAST LOW 52N174W 994 MB. FRONT TO EXTEND FROM
58N154W TO 57N147W TO 54N145W TO 47N148W. WITHIN 90 NM N AND NE
OF FRONT W OF 145W WINDS 25 TO 35 KT. SEAS 9 TO 12 FT. ELSEWHERE
WITHIN 540 NM SW AND W SEMICIRCLES AND 600 NM N QUADRANT AND
WITHIN 240 NM NE AND E OF FRONT WINDS 20 TO 30 KT. SEAS 8 TO 14
FT...HIGHEST S OF LOW...EXCEPT NE AND E OF FRONT TO 10 FT.
.48 HOUR FORECAST LOW 51N164W 997 MB. DISSIPATING FRONT TO
EXTEND FROM 60N142W TO 57N140W TO 48N145W. EXCEPT WHERE NOTED
WITH LOW 46N152W BELOW...WITHIN 900 NM S AND 720 NM W QUADRANTS
AND FROM 50N TO 60N BETWEEN 170W AND 180W AND BETWEEN THE FRONT
AND A LINE FROM 48N130W TO 57N135W WINDS 20 TO 30 KT. SEAS 8 TO
14 FT... EXCEPT N OF 50N W OF 164W AND ALSO E OF FRONT 10 FT OR
LESS.

...GALE WARNING...
.LOW 37N162E 1005 MB MOVING E 45 KT NEXT 24 HOURS THEN TURNING
MORE NE 30 KT AND INTENSIFYING AFTER 24 HOURS. FROM 30N TO 40N
BETWEEN 173E AND 160E WINDS 20 TO 30 KT. SEAS TO 11 FT.
.24 HOUR FORECAST LOW 38N174W 1003 MB. FROM 35N TO 40N BETWEEN
173W AND 177E WINDS 25 TO 35 KT. SEAS 9 TO 13 FT. ELSEWHERE FROM
32N TO 41N BETWEEN 172W AND 174E AND WITHIN 420 NM SE QUADRANT
WINDS TO 25 KT. SEAS TO 11 FT.
.48 HOUR FORECAST LOW 46N152W 988 MB. FROM 40N TO 45N BETWEEN
148W AND 154W WINDS 25 TO 35 KT. SEAS 10 TO 15 FT. ELSEWHERE
WITHIN 660 NM S...540 NM SE AND 420 NM E QUADRANTS AND WITHIN
240 NM W AND NW QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.

.SYNOPSIS AND FORECAST.

.E OF A LINE FROM 41N125W TO 30N133W AND W OF 121W AREA OF N TO
NW WINDS 20 TO 30 KT. SEAS TO 10 FT.
.24 HOUR FORECAST E OF A LINE FROM 43N126W TO 30N132W AND W OF
121W AREA OF N TO NW WINDS 20 TO 30 KT. SEAS TO 11 FT.
.48 HOUR FORECAST E OF A LINE FROM 41N125W TO 30N131W AND W OF
121W N TO NW WINDS 20 TO 30 KT. SEAS TO 12 FT.

.BETWEEN 30N AND A LINE FROM 30N165W TO 35N155W TO 30N145W WINDS
TO 25 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.LOW 40N149W 1020 MB MOVING NE 25 KT. WINDS LESS THAN 25 KT.
SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LOW 47N138W 1018 MB. WITHIN 300 NM S...240 NM
SE AND 120 NM NE QUADRANTS WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW DISSIPATED. CONDITIONS DIMINISHIED.

.48 HOUR FORECAST OVER FORECAST WATERS W OF A LINE FROM 52N169E
TO 40N165E AREA OF S TO SE WINDS TO 25 KT. SEAS TO 9 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 240 NM E OF
A LINE FROM 41N149W TO 33N155W AND OVER FORECAST WATERS FROM 30N
TO 37N W OF 173E.
.24 HOUR FORECAST DENSE FOG WITHIN 300 NM SE OF A LINE FROM
45N137W TO 35N158W...FROM 36N TO 39N BETWEEN 170W AND 180W AND
FROM 44N TO 47N W OF 163E.
.48 HOUR FORECAST DENSE FOG WITHIN AN AREA BOUNDED BY A LINE
FROM 49N143W TO 43N130W TO 32N151W TO 32N155W TO 38N155W TO
46N151W TO 49N143W...WITHIN 90 NM OF 32N163E AND FROM 40N TO 51N
W OF 166E.

.HIGH 37N135W 1032 MB NEARLY STATIONARY.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST HIGH 35N134W 1028 MB.

.HIGH 43N137W 1029 MB MOVING NE 20 KT.
.24 HOUR FORECAST HIGH 45N127W 1030 MB.
.48 HOUR FORECAST HIGH INLAND.

.HIGH 39N157W 1022 MB MOVING NE 20 KT.
.24 HOUR FORECAST HIGH 42N147W 1023 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

.HIGH 30N179W 1024 MB MOVING SE 10 KT.
.24 HOUR FORECAST HIGH S OF AREA.

.HIGH 40N179W 1021 MB MOVING E 30 KT.
.24 HOUR FORECAST HIGH DISSIPATED.

.24 HOUR FORECAST NEW HIGH 40N166E 1025 MB.
.48 HOUR FORECAST HIGH 40N177E 1031 MB.

.FORECASTER BANCROFT. 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 SUN APR 30.
24 HOUR FORECAST VALID 0600 UTC MON MAY 01.
48 HOUR FORECAST VALID 0600 UTC TUE MAY 02.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.N OF A LINE FROM 20N113W TO 21N128W WINDS 20 KT OR LESS. SEAS 8
TO 9 FT IN MIXED SW AND NW SWELL.
.24 HOUR FORECAST N OF 28N BETWEEN 122W AND 128W WINDS 20 KT OR
LESS. SEAS 8 FT IN MIXED SW AND NW SWELL.
.48 HOUR FORECAST N OF 29N BETWEEN 122W AND 129W WINDS 20 KT OR
LESS. SEAS 8 FT IN MIXED SW AND NW SWELL.

.12 HOUR FORECAST S OF 01S BETWEEN 110W AND 120W WINDS 20 KT OR
LESS. SEAS 8 FT IN SW SWELL.
.24 HOUR FORECAST S OF 01N BETWEEN 101W AND 122W WINDS 20 KT OR
LESS. SEAS 8 FT IN SW SWELL.
.48 HOUR FORECAST S OF 01S BETWEEN 95W AND 110W WINDS 20 KT OR
LESS. SEAS 8 FT IN SW SWELL.

.GULF OF CALIFORNIA FROM 26N TO 28N NW WINDS 20 TO 25 KT. SEAS
LESS THAN 8 FT.
.06 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 0845 UTC SUN APR 30...

.SCATTERED MODERATE TO STRONG FROM 02N TO 10N E OF 91W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH AXIS EXTENDS FROM 09N77W TO 10N90W TO 07N104W.
ITCZ AXIS EXTENDS FROM 07N104W TO 04N114W TO 04N130W TO 02N140W.
SCATTERED MODERATE WITHIN 120 NM OF EITHER SIDE OF THE TROUGH
AND ITCZ AXIS BETWEEN 91W AND 127W.

.FORECASTER LATTO. NATIONAL HURRICANE CENTER.

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

SYNOPSIS VALID 0600 UTC APR 30 2017.
24 HOUR FORECAST VALID 0600 UTC MAY 01 2017.
48 HOUR FORECAST VALID 0600 UTC MAY 02 2017.

.WARNINGS.

...GALE WARNING...
.LOW 26N161W 1010 MB MOVING SSW 10 KT. FRONTS FROM LOW TO
30N160W AND FROM LOW TO 27N157W 22N155W 16N164W NEARLY
STATIONARY. WINDS 30 TO 35 KT WITHIN 150 NM NW QUADRANT OF LOW.
WINDS 20 TO 30 KT ELSEWHERE WITHIN 300 NM NW SEMICIRCLE OF LOW.
SEE SEAS BELOW. SCATTERED MODERATE TSTMS WITHIN 120 NM E OF
FRONTS N OF 20N.
.24 HOUR FORECAST LOW DISSIPATED. TROUGH 30N160W 20N161W
15N162W. WINDS 20 TO 25 KT FROM 20N TO 26N BETWEEN 166W AND
176W.
.48 HOUR FORECAST TROUGH 30N161W 20N162W 18N164W. WINDS
DECREASED TO 20 KT OR LESS.

.SYNOPSIS AND FORECAST.

.FRONT JUST W OF AREA MOVING E 15 KT. WINDS 20 TO 25 KT N OF 28N
E OF 165E.
.24 HOUR FORECAST FRONT 30N169E 29N160E. WINDS DIMINISHED TO 20
KT OR LESS.
.48 HOUR FORECAST FRONT MOVED N OF FORECAST AREA.

.HIGH 30N178W 1024 MB MOVING SE SLOWLY. RIDGE FROM HIGH TO
26N170E 25N160E.
.24 HOUR FORECAST HIGH 28N177W 1021 MB DISSIPATING.
.48 HOUR FORECAST HIGH DISSIPATED.

.NE TO E WINDS 20 TO 25 KT IN AREA 20N170W 15N165W 08N178E
08N160E 18N160E 20N170W...AND N OF LINE 30N154W 15N140W.
.24 HOUR FORECAST WINDS 20 TO 25 KT E OF 156W N OF 10N.
.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 14N TO 25N W OF 170W.

.WINDS 20 KT OR LESS REST OF AREA.

.SEAS 12 TO 14 FT N OF 27N BETWEEN 160W AND 163W. SEAS 8 TO 12
FT ELSEWHERE N OF 24N BETWEEN 145W AND 168W. SEAS 8 TO 10 FT
FROM 08N TO 22N BETWEEN 165W AND 162E.
.24 HOUR FORECAST SEAS 8 TO 12 FT N OF 20N BETWEEN 162W AND
170W. SEAS 8 TO 10 FT FROM 09N TO 18N W OF 178W.
.48 HOUR FORECAST SEAS DECREASED TO 8 FT OR LESS ENTIRE FORECAST
AREA.

.SEAS 8 FT OR LOWER REST OF AREA.

.ISOLATED MODERATE TSTMS S OF 10N W OF 172W...AND FROM 02N TO
05N BETWEEN 164W AND 167W.

$$

.FORECASTER POWELL. HONOLULU HI.



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