High Seas Forecast
Issued by NWS

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000
FZPN02 KWBC 180525
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0545 UTC MON DEC 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE
NATIONAL WEATHER SERVICE. EMAIL US AT
VOSOPS@NOAA.GOV(LOWERCASE).

SECURITE

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

SYNOPSIS VALID 0000 UTC DEC 18.
24 HOUR FORECAST VALID 0000 UTC DEC 19.
48 HOUR FORECAST VALID 0000 UTC DEC 20.

.WARNINGS.

...STORM WARNING...
.LOW NW OF AREA 57N170E 962 MB MOVING NE 05 KT. FRONT EXTENDS
FROM 57N175E TO 50N176E TO 33N164E. WITHIN 300 NM NE AND E OF
THE FRONT N OF 36N WINDS 40 TO 55 KT. SEAS 16 TO 32 FT.
ELSEWHERE OVER FORECAST WATERS WITHIN 480 NM NE...1320 NM
SE...AND 1560 NM SW QUADRANTS WINDS 25 TO 40 KT. SEAS 12 TO 24
FT.
.24 HOUR FORECAST LOW NW OF AREA 59N171E 951 MB. FRONT TO EXTEND
FROM 63N173W TO 59N168W TO 52N169W TO 37N180W. WITHIN 600 NM SE
AND 540 NM S QUADRANTS...AND 180 NM NE AND E OF THE FRONT N OF
46N WINDS 40 TO 50 KT. SEAS 18 TO 30 FT. ELSEWHERE WITHIN 720 NM
NE...1360 NM SE...AND 960 NM S QUADRANTS WINDS 25 TO 40 KT. SEAS
13 TO 27 FT.
.48 HOUR FORECAST LOW NW OF FORECAST AREA 65N175W 969 MB. WITHIN
660 NM S SEMICIRCLE WINDS 30 TO 45 KT. SEAS 13 TO 29 FT.

...STORM WARNING...
.48 HOUR FORECAST LOW 48N167E 988 MB. WITHIN 360 NM SE QUADRANT
WINDS 45 TO 60 KT. SEAS 18 TO 25 FT. ELSEWHERE OVER FORECAST
WATERS WITHIN 540 NM E...660 NM SE...780 NM SW...AND 90 NM NW
QUADRANTS WINDS 30 TO 45 KT. SEAS 10 TO 20 FT.

...GALE WARNING...
.LOW 59N148W 998 MB MOVING SE 20 KT. BETWEEN 240 NM AND 540 NM S
AND 300 NM AND 780 NM SW QUADRANTS WINDS 25 TO 40 KT. SEAS 12 TO
19 FT.
.24 HOUR FORECAST LOW 55N135W 1012 MB. BETWEEN 180 NM AND 720 NM
SW QUADRANT WINDS 20 TO 30 KT. SEAS 12 TO 14 FT.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS ABSORBED BY LOW
49N123W DESCRIBED BELOW.

...GALE WARNING...
.FRONT EXTENDS FROM 43N144W TO 33N158W TO 30N166W. BETWEEN THE
FRONT AND A LINE FROM 43N144W TO 34N173W TO 30N179E WINDS 25 TO
40 KT. SEAS 11 TO 21 FT.
.24 HOUR FORECAST LOW 33N151W 1011 MB. OVER FORECAST WATERS
WITHIN 420 NM NW SEMICIRCLE WINDS 25 TO 35 KT. SEAS 12 TO 20 FT.
.48 HOUR FORECAST LOW 31N156W 1003 MB. WITHIN 840 NM NW...420 NM
W...AND 360 NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS 12 TO 21 FT.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW 45N134W 1013 MB. FRONT TO EXTEND FROM
LOW TO 40N143W. WTHIN 180 NM EITHER SIDE OF THE FRONT WINDS 20
TO 30 KT. SEAS 9 TO 12 FT.
.48 HOUR FORECAST LOW INLAND 49N123W 998 MB. OVER FORECAST
WATERS WITHIN 720 NM SW AND 660 NM NW QUADRANTS WINDS 25 TO 40
KT. SEAS 11 TO 16 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY OVER FORECAST WATERS N OF 61N
W OF 167W.
.24 HOUR FORECAST CONDITIONS IMPROVING.

.SYNOPSIS AND FORECAST.

.OVER FORECAST WATERS FROM 30N TO 42N BETWEEN 124W AND 130W AREA
OF N WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.OVER FORECAST WATERS WITHIN 180 NM SE OF A FRONT FROM 49N126W
TO 47N135W WINDS TO 25 KT. SEAS TO 10 FT.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM OVER FORECAST
WATERS WITHIN 90 NM E OF A LINE FROM 48N174E TO 43N172E.
.24 HOUR FORECAST CONDITIONS IMPROVING.

.HIGH 37N135W 1026 MB MOVING E 10 KT.
.24 HOUR FORECAST HIGH 37N130W 1025 MB.
.48 HOUR FORECAST HIGH 30N125W 1022 MB.

.HIGH 42N169W 1037 MB MOVING NE 20 KT.
.24 HOUR FORECAST HIGH 45N158W 1036 MB.
.48 HOUR FORECAST HIGH 47N150W 1035 MB.

.48 HOUR FORECAST HIGH 44N177W 1034 MB.

.FORECASTER BELL. 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 DEC 18.
24 HOUR FORECAST VALID 0000 UTC TUE DEC 19.
48 HOUR FORECAST VALID 0000 UTC WED DEC 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN AREA BOUNDED BY 27N140W TO 30N132W TO 30N116W TO 25N112W
TO 27N140W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT NW TO N SWELL.
.24 HOUR FORECAST FROM 20N TO 28N W OF 120W WINDS 20 KT OR LESS.
SEAS 8 TO 9 FT IN NW TO N SWELL.
.48 HOUR FORECAST W OF LINE FROM 30N135W TO 12N132W WINDS 20 KT
OR LESS. SEAS 8 TO 9 FT PRIMARILY IN NW SWELL.

.WITHIN AREA BOUNDED BY 03N140W TO 06N106W TO 13N108W TO 11N133W
TO 15N140W TO 03N140W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW
SWELL AND NE WIND WAVES.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.GULF OF CALIFORNIA N OF 30N W OF 114W NW WINDS 20 TO 25 KT.
SEAS LESS THAN 8 FT.
.12 HOUR FORECAST LOW NE OF AREA AND FRONT DISSIPATED. WINDS 20
KT OR LESS. SEAS LESS THAN 8 FT.

.FROM 10N TO 12N E OF 88W...INCLUDING GULF OF PAPAGAYO...NE
TO E WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST FROM 10N TO 12N E OF 88W...INCLUDING GULF OF
PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT. FROM 08N TO
10N BETWEEN 90W AND 92W WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED
NW AND NE SWELL.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.06 HOUR FORECAST N OF 14.5N BETWEEN 94W AND 95W...INCLUDING
GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST N OF 15N BETWEEN 94.5W AND 95.5W...INCLUDING
GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.42 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 0300 UTC MON DEC 18...

.SCATTERED MODERATE ISOLATED STRONG FROM 16N TO 20N BETWEEN 104W
AND 112W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
ITCZ FROM 06N90W TO 10N116W TO 10N140W. SCATTERED MODERATE
FROM 08N TO 10N BETWEEN 130W AND 138W.

.FORECASTER AL. NATIONAL HURRICANE CENTER.

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

SYNOPSIS VALID 0000 UTC DEC 18 2017.
24 HOUR FORECAST VALID 0000 UTC DEC 19 2017.
48 HOUR FORECAST VALID 0000 UTC DEC 20 2017.

.WARNINGS.

...GALE WARNING...
.FRONT FROM 30N170W TO 21N180W TO 22N171E MOVING E TO 25 KT E OF
180E...NEARLY STATIONARY ELSEWHERE. NE WINDS 30 TO 40 KT N OF A
LINE FROM 30N160W TO 25N177W. NE TO E WINDS 20 TO 30 KT
ELSEWHERE N OF FRONT.
.24 HOUR FORECAST FRONT FROM 30N155W TO 26N160W TO 23N178E. NE
WINDS 30 TO 35 KT N OF 26N BETWEEN FRONT AND 180W. NE TO E WINDS
20 TO 30 KT ELSEWHERE N OF FRONT.
.48 HOUR FORECAST FRONT FROM 30N150W TO 24N152W TO 21N160W TO
22N178E. NE TO E WINDS 20 TO 30 KT N OF FRONT.

.SYNOPSIS AND FORECAST.SCATTERED

.LOW 26N159W 1010 MB MOVING NNE SLOWLY. TROUGH FROM LOW TO
30N158W AND FROM LOW TO 20N164W. E TO SE WINDS 20 TO 25 KT N OF
22N BETWEEN 149W AND 153W. WIDELY SCATTERED TSTMS WITHIN 12O NM
OF A LINE FROM 20N150W TO 25N153W TO 29N155W.
.24 HOUR FORECAST LOW AND TROUGH MERGED WITH FRONT DESCRIBED
ABOVE. S TO SE WINDS 20 TO 25 KT N OF 28N BETWEEN 148W AN 150W.
.48 HOUR FORECAST S WINDS DIMINISHED TO 20 KT OR LESS.

.FRONT APPROACHING 30N160E MOVING E 20 KT. S WINDS 20 TO 25 KT N
OF 28N W OF 170E.
.24 HOUR FORECAST FRONT FROM 30N170E TO 27N160E. WINDS
DIMINISHED TO 20 KT OR LESS.
.48 HOUR FORECAST FRONT MOVED N OF AREA.

.TROUGH FROM 17N157W TO 10N165W TO 01N174W MOVING W NEAR 10 KT.
SCATTERED MODERATE TSTMS WITHIN 120 NM OF TROUGH BETWEEN 162W
AND 170W.
.24 HOUR FORECAST TROUGH FROM 18N151W TO 10N170W TO 01N175W.
.48 HOUR FORECAST TROUGH FROM 16N165W TO 10N172W TO 02N178W.

.DISSIPATING TROUGH 11N145W TO 08N147W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH DISSIPATED.

.NE TO E WINDS 20 TO 25 KT FROM 07N TO 15N W OF 175E.
.24 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 06N TO 20N W OF
172E.
.48 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 08N TO 23N W OF
172E.

.RIDGE FROM 30N173E TO 25N161E...NEARLY STATIONARY AND ERODING
FROM W.

.SEAS 12 TO 20 FT N OF A LINE FROM 30N161W TO 21N176E. SEAS 8 TO
12 FT ELSEWHERE N OF 21N E OF 169E. SEAS 8 TO 9 FT FROM 05N TO
20N W OF 172W AND FROM 10N TO 15N E OF 148W.
.24 HOUR FORECAST SEAS 12 TO 18 FT N OF A LINE FROM 30N151W TO
20N170E TO 20N175E. SEAS 8 TO 12 FT ELSEWHERE N OF A LINE FROM
30N140W TO 05N160E.
.48 HOUR FORECAST SEAS 12 TO 15 FT N OF A LINE FROM 30N155W TO
20N177W TO 21N175E. SEAS 8 TO 12 FT ELSEWHERE N OF A LINE FROM
22N140W TO 06N160E.

.OTHERWISE WINDS 20 KT OR LESS AND SEAS 8 FT OR LESS OVER REST
OF AREA.

.SCATTERED MODERATE TSTMS S OF 07N BETWEEN W TO 170E.

$$

.FORECASTER MORRISON. HONOLULU HI.



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