High Seas Forecast
Issued by NWS

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FZPN02 KWBC 202325
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2345 UTC TUE FEB 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

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 1800 UTC FEB 20.
24 HOUR FORECAST VALID 1800 UTC FEB 21.
48 HOUR FORECAST VALID 1800 UTC FEB 22.

.WARNINGS.

...GALE WARNING...
.COMPLEX LOW WITH MEAN CENTER 48N175E 992 MB MOVING NE 20 KT.
FROM 38N TO 55N BETWEEN 166W AND 167E WINDS 30 TO 45 KT. SEAS
12 TO 24 FT.
.24 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER 58N177W 997 MB.
OVER ICE FREE FORECAST WATERS WITHIN 480 NM NE...540 NM SE...480
NM S AND SW...AND 180 NM NW QUADRANTS WINDS 30 TO 45 KT. SEAS 11
TO 22 FT.
.48 HOUR FORECAST LOW MOVED INLAND OVER ALASKA WITH A NEW LOW TO
FORM NEAR 59N149W 1018 MB. OVER ICE FREE FORECAST WATERS N OF A
LINE FROM 53N142W TO 53N165W TO 61N177W WINDS 20 TO 30 KT. SEAS
8 TO 15 FT.

...GALE WARNING...
.LOW NW OF AREA 67N179E 990 MB MOVING NE 20 KT. OVER ICE FREE
FORECAST WATERS N AND W OF A LINE FROM 61N168W TO 58N177E WINDS
25 TO 35 KT. SEAS 13 TO 26 FT.
.12 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS N OF AREA.

...GALE WARNING...
.LOW JUST W OF AREA 33N159E 1010 MB MOVING NE 20 KT. OVER
FORECAST WATERS N OF 30N WITHIN 300 NM E AND SE QUADRANTS WINDS
25 TO 35 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST LOW 39N170W 1012 MB. WITHIN 300 NM E AND NE
SEMICIRCLES WINDS 25 TO 35 KT. SEAS 8 TO 15 FT.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 46N176E 1003 MB.
WITHIN 420 NM NE...480 NM SE...780 NM S AND SW...AND 300 NM W
AND NW QUADRANTS WINDS 25 TO 40 KT. SEAS 9 TO 16 FT.

...GALE WARNING...
.24 HOUR FORECAST LOW 46N165E 1007 MB. WITHIN 180 NM NE AND 120
NM SW SEMICIRCLES WINDS 25 TO 40 KT. SEAS 8 TO 15 FT.
.48 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 55N164E
DESCRIBED BELOW.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW 51N163E 1004 MB. WITHIN 180 NM NE
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST LOW W OF AREA 55N164E 999 MB. OVER FORECAST
WATERS FROM 47N TO 58N W OF 178E WINDS 25 TO 40 KT. SEAS 11 TO
22 FT.

...GALE WARNING...
.24 HOUR FORECAST LOW W OF AREA 48N157E 999 MB. OVER FORECAST
WATERS WITHIN 240 NM SE QUADRANT WINDS 25 TO 35 KT. SEAS TO 10
FT.
.48 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 55N164E
DESCRIBED ABOVE.

.SYNOPSIS AND FORECAST.

.OVER FORECAST WATERS FROM 30N TO 37N E OF 127W AREA OF N TO NW
WINDS TO 25 KT. SEAS 8 TO 15 FT.
.24 HOUR FORECAST CONDITIONS DESCRIBED WITH LOW 36N125W BELOW.

.LOW 45N128W 1018 MB MOVING SE 15 KT. WITHIN 360 NM W AND SW
QUADRANTS WINDS 20 TO 30 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW 36N125W 1020 MB. WITHIN 300 NM W
SEMICIRCLE WINDS TO 25 KT. SEAS TO 11 FT.
.48 HOUR FORECAST LOW DISSIPATED. FROM 32N TO 45N BETWEEN 120W
AND 130W N TO NW WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.

.LOW 60N147W 1024 MB MOVING SE 30 KT. OVER FORECAST WATERS WITHIN
180 NM W AND SW QUADRANTS WINDS 20 TO 30 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW 51N129W 1025 MB. WITHIN 180 NM W SEMICIRCLE
WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW DISSIPATED.

.FROM 30N TO 35N BETWEEN 144W AND 163W E TO SE WINDS 20 TO 30 KT.
SEAS 8 TO 13 FT.
.24 HOUR FORECAST FROM 30N TO 36N BETWEEN 145W AND 165W E TO SE
WINDS 20 TO 30 KT. SEAS 8 TO 15 FT.
.48 HOUR FORECAST LOW 33N166W 1015 MB. FROM 30N TO 41N BETWEEN
148W AND 170W WINDS 20 TO 30 KT. SEAS 8 TO 15 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 43N TO 51N
BETWEEN 142W AND 153W...WITHIN 120 NM OF 39N161W...AND FROM 43N
TO 51N BETWEEN 170W AND 178W.
.24 HOUR FORECAST DENSE FOG FROM 41N TO 62N BETWEEN 151W AND
171W.
.48 HOUR FORECAST DENSE FOG FROM 34N TO 51N BETWEEN 149W AND
178E.

.HIGH 37N140W 1035 MB NEARLY STATIONARY.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST HIGH DISSIPATED.

.HIGH 49N157W 1038 MB MOVING E 15 KT WILL TURN SE AFTER 24 HOURS.
.24 HOUR FORECAST HIGH 49N148W 1041 MB.
.48 HOUR FORECAST HIGH 45N144W 1043 MB.

.HIGH 56N159W 1034 MB MOVING NE 15 KT.
.24 HOUR FORECAST HIGH INLAND OVER ALASKA.

.HIGH 35N174E 1021 MB MOVING NE 30 KT.
.24 HOUR FORECAST HIGH 45N176W 1032 MB.
.48 HOUR FORECAST HIGH 52N168W 1040 MB.

.FORECASTER MILLS. 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 1800 UTC TUE FEB 20.
24 HOUR FORECAST VALID 1800 UTC WED FEB 21.
48 HOUR FORECAST VALID 1800 UTC THU FEB 22.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.COLD FRONT FROM 24.5N111.5W TO 23.5N112.5W...THEN WEAKENING
COLD FRONT TO 22N116W. W OF LINE FROM 20N126W TO 27N140W NE TO E
WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. N OF 26.5N BETWEEN 118W AND
131W WINDS 20 KT OR LESS. SEAS 10 TO 14 FT IN NW TO N SWELL.
ELSEWHERE N OF LINE FROM 25N115W TO 21N123W TO 16N124W TO
09N140W WINDS 20 KT OR LESS. N OF 20N SEAS 8 TO 11 FT PRIMARILY
IN NW SWELL. S OF 20N SEAS 8 TO 9 FT IN MIXED NW AND NE SWELL.
.24 HOUR FORECAST FRONTS DISSIPATED. W OF LINE FROM 16N126W TO
20N126W TO 25N140W NE TO E WINDS 20 TO 25 KT. SEAS 10 TO 12 FT.
ELSEWHERE N OF LINE FROM 20N113W TO 12N124W TO 10N140W WINDS 20
KT OR LESS. N OF 20N SEAS 8 TO 11 FT IN NW TO N SWELL. S OF 20N
SEAS 8 TO 11 FT IN MIXED NW AND NE SWELL.
.48 HOUR FORECAST W OF LINE FROM 24N140W TO 18N114W TO 13N128W
NE TO E WINDS 20 TO 25 KT. SEAS 9 TO 12 FT. ELSEWHERE N OF LINE
FROM 28N140W TO 18N111W TO 10N111W TO 08N140W WINDS 20 KT OR
LESS. SEAS 8 TO 11 FT IN MIXED NE AND NW SWELL.

.WITHIN 30 NM EITHER SIDE OF LINE FROM 11N86W TO
10.5N88W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO
25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST WITHIN 30 NM EITHER SIDE OF LINE FROM 11N86W
TO 10.5N88.5W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS
20 TO 25 KT. SEAS TO 9 FT. FROM 08.5N TO 12N BETWEEN 88.5W AND
93W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED E AND SW SWELL.
.48 HOUR FORECAST LITTLE CHANGE.

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

CONVECTION VALID AT 2045 UTC TUE FEB 20...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
TROUGH FROM 08N74W TO 06N82W TO 07N91W TO 05N101W. ITCZ
CONTINUES FROM 05N101W TO 03N117W TO 06N136W TO BEYOND 05N140W.
SCATTERED MODERATE ISOLATED STRONG FROM 07N TO 11N BETWEEN 128W
AND 140W.

.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.

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

SYNOPSIS VALID 1800 UTC FEB 20 2018.
24 HOUR FORECAST VALID 1800 UTC FEB 21 2018.
48 HOUR FORECAST VALID 1800 UTC FEB 22 2018.

.WARNINGS.

...GALE WARNING...
.LOW 27N159W 1012 MB MOVING NW 10 KT. TROUGH FROM LOW TO 21N158W
MOVING W SLOWLY. WINDS 25 TO 35 KT WITHIN 420 NM NE QUADRANT OF
LOW. E TO SE WINDS 20 TO 25 KT ELSEWHERE N OF 11N E OF 152W...
EXCEPT WINDS 20 KT OR LESS N OF A LINE FROM 30N147W TO 27N140W.
ISOLATED MODERATE TO STRONG TSTMS WITHIN150 NM OF A LINE FROM
30N157W TO 26N153W TO 21N152W...AND WITHIN 120 NM OF A LINE FROM
30N149W TO 24N146W TO 14N148W.
.24 HOUR FORECAST LOW 29N162W 1014 MB. TROUGH FROM LOW TO
23N161W. WINDS 20 TO 30 KT WITHIN 240 NM NE QUADRANT OF
LOW...AND E OF A LINE FROM 30N155W TO 25N150W TO 15N140W.
.48 HOUR FORECAST LOW MOVED N OF AREA. TROUGH FROM 30N165W TO
24N166W. WINDS 20 TO 30 KT E OF A LINE FROM 30N156W TO 16N153W
TO 09N140W.

.SYNOPSIS AND FORECAST.

.FRONT FROM 30N180W TO 29N179E TO 22N170E TO 19N160E. WEAK LOW
IN FRONT NEAR 29N179E 1016 MB. FRONT AND LOW NEARLY STATIONARY.
ISOLATED MODERATE TSTMS WITHIN 240 NM E OF FRONT N OF 28N.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH FROM 30N179W TO
25N179W.
.48 HOUR FORECAST TROUGH FROM 30N179E TO 26N179E.

.TROUGH FROM 15N161W TO 08N173W NEARLY STATIONARY. ISOLATED TO
LOCALLY SCATTERED MODERATE TSTMS WITHIN 480 NM SE OF TROUGH N OF
07N.
.24 HOUR FORECAST TROUGH FROM 15N163W TO 07N172W.
.48 HOUR FORECAST TROUGH FROM 19N160W TO 15N165W.

.48 HOUR FORECAST E WINDS 20 TO 25 KT FROM 12N TO 20N BETWEEN
180W AND 165E.

.48 HOUR FORECAST NEW FRONT NEAR 30N160E.

.RIDGE FROM 30N173W TO 25N180E MOVING N SLOWLY.

.RIDGE FROM 30N167E TO 27N160E MOVING E 15 KT.

.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.

.SEAS 12 TO 14 FT N OF 25N BETWEEN 178E AND 165E...AND N OF A
LINE FROM 30N160W TO 24N154W TO 30N151W. SEAS 8 TO 12 FT
ELSEWHERE N OF A LINE FROM 08N140W TO 10N150W TO 28N163W TO
11N180W TO 08N160E.
.24 HOUR FORECAST SEAS 8 OR LESS N OF A LINE FROM 30N173E TO
22N160E. SEAS 8 TO 12 FT ELSEWHERE N OF A LINE FROM 12N140W TO
22N160W TO 10N170W TO 04N160E.
.48 HOUR FORECAST SEAS 8 TO 11 FT N OF 08N E OF 175W. SEAS 8 TO
10 FT BETWEEN 05N AND A LINE FROM 30N175W TO 16N160E.

.SEAS 8 FT OR LOWER OVER REMAINDER OF FORECAST AREA.

.ISOLATED MODERATE TSTMS S OF 06N W OF 180W.

.ITCZ FROM 08N140W TO 09N149W. ISOLATED MODERATE TSTMS WITHIN 90
NM OF ITCZ.

$$

.FORECASTER WROE. HONOLULU HI.



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