High Seas Forecast
Issued by NWS

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392
FZPN01 KWBC 250350
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC SUN FEB 25 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 25.
24 HOUR FORECAST VALID 0000 UTC FEB 26.
48 HOUR FORECAST VALID 0000 UTC FEB 27.

.WARNINGS.

...STORM WARNING...
.LOW 50N172E 986 MB MOVING NE 25 KT. FRONT EXTENDS FROM 51N175E
TO 50N179E TO 46N179E TO 40N176E. FROM 47N TO 51N BETWEEN 168E
AND 171E...ALSO FROM 44N TO 48N BETWEEN 171E AND 175E WINDS 40
TO 50 KT. SEAS 15 TO 25 FT. ELSEWHERE FROM 42N TO 55N BETWEEN
166E AND 180W...AND WITHIN 180 NM NE AND E OF FRONT N OF 43N
WINDS 30 TO 45 KT. SEAS 10 TO 22 FT.
.24 HOUR FORECAST LOW 58N178W 981 MB. WITHIN 240 NM S AND SE OF
A LINE FROM 58N172W TO 56N178W TO 55N177E WINDS 40 TO 60 KT.
SEAS 18 TO 33 FT. ELSEWHERE BETWEEN 50N AND 62N FROM 160W TO
172E WINDS 30 TO 45 KT. SEAS 9 TO 23 FT.
.48 HOUR FORECAST LOW INLAND NEAR 61N150W 987 MB. FROM 55N TO
59N BETWEEN 143W AND 158W WINDS 35 TO 50 KT. SEAS 15 TO 24 FT.
ELSEWHERE FROM 52N TO 60N BETWEEN 134W AND 162W WINDS 25 TO 40
KT. SEAS 9 TO 20 FT.

...STORM WARNING...
.LOW 58N139W 986 MB MOVING SE 20 KT. FROM 52N TO 59N BETWEEN
136W AND 151W WINDS 35 TO 50 KT. SEAS 12 TO 27 FT. ELSEWHERE
WITHIN 720 NM OF CENTER WINDS 25 TO 40 KT. SEAS 9 TO 21 FT.
.24 HOUR FORECAST LOW INLAND 56N124W 998 MB. WITHIN 1020 NM W
AND SW QUADRANTS WINDS 25 TO 35 KT. SEAS 10 TO 23 FT.
.48 HOUR FORECAST LOW DISSIPATED. FROM 34N TO 40N BETWEEN 121W
AND 126W WINDS 25 TO 35 KT. SEAS 10 TO 17 FT. ELSEWHERE S OF 41N
BETWEEN 118W AND 133W WINDS 20 TO 30 KT. SEAS 8 TO 15 FT.

...STORM WARNING...
.24 HOUR FORECAST FROM 48N TO 56N BETWEEN 150W AND 163W WINDS 20
TO 30 KT. SEAS TO 12 FT.
.42 HOUR FORECAST LOW 60N140W 989 MB. WITHIN 180 NM S SEMICIRCLE
WINDS 35 TO 50 KT. SEAS 10 TO 18 FT.
.48 HOUR FORECAST LOW INLAND WITH CONDITIONS DESCRIBED WITH LOW
61N150W.

...STORM WARNING...
.18 HOUR FORECAST LOW 47N164E 1002 MB. WITHIN 180 NM S
SEMICIRCLE WINDS 35 TO 50 KT. SEAS 13 TO 21 FT.
.24 HOUR FORECAST LOW 49N167E 1003 MB. WITHIN 300 NM S AND SE
SEMICIRCLES WINDS 35 TO 45 KT. SEAS 12 TO 21 FT.
.48 HOUR FORECAST LOW 55N178W 1009 MB. WITHIN 300 NM S AND SE
SEMICIRCLES WINDS 25 TO 35 KT. SEAS 10 TO 18 FT.

...GALE WARNING...
.FROM 56N TO 60N BETWEEN 158W AND 172W WINDS 25 TO 35 KT. SEAS
12 TO 22 FT.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

...GALE WARNING...
.48 HOUR FORECAST LOW 35N161E 1000 MB. WITHIN 300 NM SE
SEMICIRCLE WINDS 25 TO 35 KT. SEAS TO 11 FT. ELSEWHERE WITHIN
600 NM OF CENTER EXCEPT 720 NM NE QUADRANT WINDS 20 TO 30 KT.
SEAS TO 10 FT.

...GALE WARNING...
.WITHIN 300 NM NE AND E OF A LINE FROM 34N170W TO 30N164W WINDS
20 TO 30 KT. SEAS 9 TO 13 FT.
.24 HOUR FORECAST WITHIN 300 NM NE AND E OF A LINE FROM 35N167W
TO 30N165W WINDS 25 TO 35 KT. SEAS 9 TO 13 FT.
.48 HOUR FORECAST NEW LOW 43N165W 1016 MB. S OF 45N BETWEEN 155W
AND 165W WINDS 20 TO 30 KT. SEAS 9 TO 14 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY OVER ICE FREE FORECAST WATERS
N OF 61N BETWEEN ALASKA AND 173W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 60N
BETWEEN ALASKA AND 174W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 60N
BETWEEN ALASKA AND 173W.

.SYNOPSIS AND FORECAST.

.FROM 32N TO 41N BETWEEN 120W AND 126W WINDS TO 25 KT. SEAS TO 9
FT.
.24 HOUR FORECAST FROM 30N TO 37N BETWEEN 120W AND 125W AREA OF
N WINDS TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST CONDITIONS DESCRIBED IN WARNINGS SECTION
ABOVE.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 41N TO 51N
BETWEEN 169W AND 178E.
.24 HOUR FORECAST DENSE FOG FROM 31N TO 40N BETWEEN 159W AND
171W...ALSO FROM 46N TO 49M BETWEEN 157W AND 161W.
.48 HOUR FORECAST DENSE FOG FROM 31N TO 47N BETWEEN 157W AND
169W.

.HIGH 41N146W 1041 MB MOVING SW 5 KT.
.24 HOUR FORECAST HIGH 39N149W 1039 MB.
.48 HOUR FORECAST HIGH 39N147W 1039 MB.

.HIGH 44N157W 1042 MB MOVING SE 10 KT.
.24 HOUR FORECAST HIGH MERGED WITH HIGH 39N149W DESCRIBED ABOVE.

.HIGH 36N162E 1025 MB MOVING NE 40 KT.
.24 HOUR FORECAST HIGH 45N179W 1029 MB.
.48 HOUR FORECAST HIGH 50N159W 1028 MB.

.24 HOUR FORECAST HIGH 41N165E 1028 MB.
.48 HOUR FORECAST HIGH 46N176E 1029 MB.

.FORECASTER SHAW. 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 SUN FEB 25.
24 HOUR FORECAST VALID 0000 UTC MON FEB 26.
48 HOUR FORECAST VALID 0000 UTC TUE FEB 27.

.WARNINGS.

...ASHFALL ADVISORY...FUEGO VOLCANO NEAR POSITION 14.3N 90.9W IS
CURRENTLY ERUPTING. PLUME OF VOLCANIC ASH MAY REACH TO THE
SURFACE. LOW LEVEL VISIBILITY MAY BE REDUCED TO 6 NM OR LESS N
OF 14N E OF 93W. MARINERS SHOULD EXERCISE CAUTION. IF MARINERS
ENCOUNTER VOLCANIC ASH...THEY ARE ENCOURAGED TO REPORT THE
OBSERVATION TO THE NATIONAL WEATHER SERVICE BY CALLING 305-229-
4425.

.SYNOPSIS AND FORECAST.

.WITHIN 90 NM OF LINE FROM 13N122W TO 17N140W NE WINDS 20 TO 25
KT. SEAS 9 TO 11 FT. ELSEWHERE WITHIN AREA BOUNDED BY 30N127W TO
30N120W TO 12N112W TO 05N140W TO 25N140W TO 30N127W WINDS 20 KT
OR LESS. SEAS TO 10 FT PRIMARILY IN MIXED SWELL.
.24 HOUR FORECAST FROM 20N TO 24N BETWEEN 137W AND 140W NE WINDS
20 TO 25 KT. SEAS 10 FT. ELSEWHERE WITHIN AREA BOUNDED BY
30N125W TO 30N120W TO 10N118W TO 08N140W TO 26N140W TO 30N125W
WINDS 20 KT OR LESS. SEAS TO 9 FT PRIMARILY IN MIXED SWELL.
.48 HOUR FORECAST FROM 11N TO 25N BETWEEN 132W AND 140W NE WINDS
20 TO 25 KT. SEAS 9 TO 12 FT. ELSEWHERE WITHIN AREA BOUNDED BY
30N130W TO 30N118W TO 10N123W TO 08N140W TO 27N140W TO 30N130W
WINDS 20 KT OR LESS. SEAS TO 10 FT PRIMARILY IN MIXED SWELL.

.FROM 10N TO 12N E OF 88W...INCLUDING THE GULF OF PAPAGAYO...
NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.

.GULF OF CALIFORNIA FROM 24N TO 28N NW WINDS 20 TO 25 KT. SEAS
LESS THAN 8 FT.
.12 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 SUN FEB 25...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH FROM 09N84W TO 03N100W. ITCZ FROM 03N100W TO
08N123W TO 05N140W. SCATTERED MODERATE ISOLATED STRONG WITHIN
120 NM OF LINE FROM 00N100W TO 03N108W AND WITHIN 150 NM OF
LINE FROM 15N120W TO 08N130W.

$$
.FORECASTER NELSON. NATIONAL HURRICANE CENTER.



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