High Seas Forecast
Issued by NWS

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496
FZPN01 KWBC 190434 CCA
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC MON FEB 19 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

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 FEB 19.
24 HOUR FORECAST VALID 0000 UTC FEB 20.
48 HOUR FORECAST VALID 0000 UTC FEB 21.

.WARNINGS.

...STORM WARNING...
.LOW 51N174E 964 MB MOVING N 25 KT. WITHIN 360 NM S AND 240 NM W
QUADRANTS...AND BETWEEN 360 NM AND 600 NM NE QUADRANTS WINDS 40
TO 55 KT. SEAS 16 TO 30 FT...HIGHEST S SEMICIRCLE. ELSEWHERE
WITHIN 360 NM SW...420 NM NW...720 NM NE...AND 1020 NM SE
QUADRANTS WINDS 25 TO 40 KT. SEAS 10 TO 25 FT.
.24 HOUR FORECAST LOW NW OF AREA NEAR 61N175E 966 MB. OVER
FORECAST WATERS WITHIN 420 NM SE QUADRANT WINDS 40 TO 55 KT.
SEAS 20 TO 28 FT. ELSEWHERE W AND NW OF A LINE FROM 59N164W TO
54N176W TO 51N163E WINDS 25 TO 40 KT. SEAS 10 TO 24 FT.
.48 HOUR FORECAST LOW WELL N OF AREA. N OF 61N W OF 170W WINDS
TO 25 KT. SEAS 12 TO 18 FT.

...GALE WARNING...
.LOW INLAND 47N122W 1004 MB MOVING SE 20 KT. FROM 40N TO 52N E
OF 135W WINDS 30 TO 45 KT. SEAS 13 TO 28 FT.
.24 HOUR FORECAST LOW DISSIPATED INLAND. FROM 30N TO 43N E OF
130W WINDS 20 TO 30 KT. SEAS 12 TO 21 FT.
.48 HOUR FORECAST CONDITIONS DIMINISHED.

...GALE WARNING...
.LOW W OF AREA 39N157E 998 MB MOVING E 25 KT. FROM 33N TO 39N W
OF 173E AREA OF WINDS 20 TO 30 KT. SEAS 14 TO 24 FT.
.24 HOUR FORECAST COMPLEX LOW WITH FIRST LOW 41N169E 998 MB AND
SECOND NEW LOW 41N176E 1006 MB. WITHIN 240 NM NW...300 NM
SW...AND 360 NM SE QUADRANT OF FIRST LOW AND 240 NM NE AND 300
NM SE QUADRANTS OF SECOND LOW WINDS 25 TO 40 KT. SEAS 14 TO 24
FT.
.48 HOUR FORECAST COMPLEX LOW WITH FIRST LOW 44N173E 998 MB AND
SECOND LOW 47N176E 996 MB. WITHIN 300 NM S SEMICIRCLE OF FIRST
LOW WINDS 30 TO 45 KT. SEAS 13 TO 23 FT. ELSEWHERE WITHIN 360 NM
NE AND 180 NM NW QUADRANTS OF SECOND LOW WINDS 25 TO 40 KT. SEAS
12 TO 17 FT.

...GALE WARNING...
.48 HOUR FORECAST LOW 35N161E 1006 MB. WITHIN 300 NM S AND SE
QUADRANTS WINDS 25 TO 40 KT. SEAS 8 TO 16 FT.

.SYNOPSIS AND FORECAST.

.LOW 47N156W 1024 MB MOVING NE 10 KT. WITHIN 360 NM E AND SE
QUADRANTS WINDS TO 25 KT. SEAS 9 TO 13 FT.
.24 HOUR FORECAST LOW 51N150W 1025 MB. WITHIN 420 NM SE QUADRANT
 WINDS TO 25 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST LOW DISSIPATED WITH CONDITIONS DIMINISHED.

.24 HOUR FORECAST NEW LOW 53N136W 1020 MB. WITHIN 360 NM SW
QUADRANT WINDS TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST LOW 44N129W 1017 MB. WITHIN 360 NM SW QUADRANT
WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.

.48 HOUR FORECAST FROM 30N TO 36N BETWEEN 119W AND 125W WINDS TO
25 KT. SEAS 8 TO 13 FT.

.48 HOUR FORECAST FROM 30N TO 35N BETWEEN 161W AND 154W WINDS TO
25 KT. SEAS 8 TO 12 FT.

.48 HOUR FORECAST FROM 30N TO 36N BETWEEN 176W AND 180W WINDS TO
25 KT. SEAS 9 TO 13 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 36N TO 52N
BETWEEN 150W AND 158W AND FROM 38N TO 55N BETWEEN 169W AND 178E.
.24 HOUR FORECAST DENSE FOG FROM 44N TO 53N BETWEEN 143W AND
154W AND FROM 56N TO 59N BETWEEN 162W AND 166W.
.48 HOUR FORECAST DENSE FOG FROM 45N TO 48N BETWEEN 170W AND
173W.

.HIGH 49N142W 1040 MB MOVING S 20 KT.
.24 HOUR FORECAST HIGH 41N141W 1038 MB.
.48 HOUR FORECAST HIGH 36N140W 1033 MB.

.HIGH 45N163W 1032 MB MOVING E 10 KT THEN MOVING NE AFTER 24
HOURS.
.24 HOUR FORECAST HIGH 45N160W 1033 MB.
.48 HOUR FORECAST HIGH 50N156W 1039 MB.

.48 HOUR FORECAST HIGH 34N171E 1024 MB.

.FORECASTER ROWLAND. 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 FEB 19.
24 HOUR FORECAST VALID 0000 UTC TUE FEB 20.
48 HOUR FORECAST VALID 0000 UTC WED FEB 21.

.WARNINGS.
...GALE WARNING...

.03 HOUR FORECAST TROUGH FROM 32.5N115W TO 26N120W. GULF OF
CALIFORNIA FROM 29N TO 31N SW TO W WINDS 20 TO 25 KT. SEAS LESS
THAN 8 FT.
.24 HOUR FORECAST COLD FRONT FROM 32N112.5W TO 30.5N114.5W. GULF
OF CALIFORNIA FROM 29N TO 30.5N SW TO W WINDS 20 TO 30 KT. SEAS
TO 8 FT. N OF 30.5N NW WINDS 25 TO 35 KT. SEAS LESS THAN 8 FT.
.30 HOUR FORECAST COLD FRONT FROM 31.5N111.5W TO 29N114.5W. GULF
OF CALIFORNIA N OF 30N NW TO N WINDS 25 TO 35 KT. SEAS TO 10 FT.
.36 HOUR FORECAST FRONT E OF AREA. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.SYNOPSIS AND FORECAST.

.FROM 14N TO 18N BETWEEN 131W AND 140W NE WINDS 20 TO 25 KT.
SEAS TO 9 FT IN MIXED SWELL. ELSEWHERE FROM 12N TO 19N BETWEEN
130W AND 140W WINDS 20 KT OR LESS. SEAS TO 8 FT IN NE AND NW
SWELL.
.24 HOUR FORECAST N OF 12N AND W OF 27W NE WINDS 20 TO 25 KT.
SEAS TO 8 FT. NW OF A LINE FROM 28N114W TO 24N127W N WINDS 20 TO
25 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST FROM 13N TO 25N BETWEEN 130W AND 140W NE WINDS
20 TO 25 KT. SEAS 8 TO 11 FT. ELSEWHERE NW OF A LINE FROM
29N115W TO 15N120W TO 08N140W WINDS 20 KT OR LESS. SEAS 8 TO 14
FT IN MIXED SWELL...HIGHEST SEAS AT 30N121W.

.WITHIN 75 NM OF LINE FROM 12N86.5W TO 09.5N89W...INCLUDING THE
GULF OF PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST WITHIN 75 NM OF LINE FROM 12N86.5W TO
10N90W... INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO
25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST LITTLE CHANGE.

.06 HOUR FORECAST WITHIN 15 NM OF LINE FROM 16N95W TO
14.5N95W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25
KT. SEAS LESS THAN 8 FT.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.03 HOUR FORECAST N OF 05N BETWEEN 79W AND 81W...INCLUDING THE W
GULF OF PANAMA...N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.30 HOUR FORECAST N OF 06N BETWEEN 79W AND 81W...INCLUDING THE W
GULF OF PANAMA...N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.36 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 FEB 19...

.SCATTERED MODERATE CONVECTION FROM 15N TO 18N BETWEEN 123W AND
127W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...TROUGH FROM
10N85W TO 06N90W TO 05N102W. ITCZ FROM 05N102W TO 07N110W TO
07N140W. NO SIGNIFICANT CONVECTION NOTED.

$$
.FORECASTER FORMOSA. NATIONAL HURRICANE CENTER.



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