High Seas Forecast
Issued by NWS

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518
FZPN01 KWBC 242134
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC SAT FEB 24 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC FEB 24.
24 HOUR FORECAST VALID 1800 UTC FEB 25.
48 HOUR FORECAST VALID 1800 UTC FEB 26.

.WARNINGS.

...STORM WARNING...
.LOW 46N168E 987 MB MOVING NE 30 KT. WITHIN 240 NM S AND W
SEMICIRCLES WINDS 35 TO 50 KT. SEAS 14 TO 27 FT. ELSEWHERE
WITHIN THE REGION BOUNDED BY A LINE FROM 50N162E TO 38N162E TO
38N176E TO 48N172W TO 54N177E TO 50N162E WINDS 25 TO 40 KT. SEAS
10 TO 22 FT...HIGHEST S OF LOW CENTER.
.24 HOUR FORECAST LOW 56N178E 980 MB. FROM 52N TO 54N BETWEEN
174E AND 176W WINDS 45 TO 60 KT. SEAS 18 TO 32 FT. ALSO WITHIN
360 NM S SEMICIRCLE AND BETWEEN 120 NM AND 360 NM N AND NE
QUADRANTS WINDS 35 TO 45 KT. SEAS 12 TO 28 FT...HIGHEST S.
ELSEWHERE FROM 48N TO 62N BETWEEN 168E AND 160W WINDS 25 TO 35
KT. SEAS 9 TO 23 FT.
.48 HOUR FORECAST LOW INLAND NEAR 61N158W 983 MB. OVER ICE FREE
FORECAST WATERS WITHIN 420 NM S AND SW QUADRANTS WINDS 40 TO 50
KT. SEAS 18 TO 34 FT...HIGHEST SW. ALSO N OF 51N BETWEEN 150W
AND 172W WINDS 25 TO 40 KT. SEAS 12 TO 28 FT. ELSEWHERE OVER ICE
FREE WATERS IN THE BERING SEA WINDS TO 25 KT. SEAS 10 TO 20 FT.

...STORM WARNING...
.LOW 58N144W 988 MB MOVING SE 20 KT. WITHIN 240 NM SW SEMICIRCLE
WINDS 35 TO 50 KT. SEAS 11 TO 22 FT. ELSEWHERE BETWEEN 134W AND
A LINE FROM 60N153W TO 53N167W TO 48N147W WINDS 25 TO 40 KT.
SEAS 9 TO 18 FT.
.24 HOUR FORECAST LOW 56N132W 995 MB. WITHIN 840 NM S AND 780 NM
W QUADRANTS WINDS 25 TO 40 KT. SEAS 10 TO 26 FT...HIGHEST NEAR
53N135W.
.48 HOUR FORECAST LOW DISSIPATED. OVER FORECAST WATERS FROM 33N
TO 44N E OF 135W WINDS 20 TO 30 KT. SEAS 10 TO 18 FT. ELSEWHERE
FROM 31N TO 50N E OF 140W WINDS TO 25 KT. SEAS 8 TO 15 FT.

...STORM WARNING...
.48 HOUR FORECAST NEW LOW 59N140W 985 MB. WITHIN 180 NM SW
QUADRANT WINDS 40 TO 50 KT. SEAS 10 TO 19 FT. ELSEWHERE OVER
FORECAST WATERS N OF 46N BETWEEN 134W AND 150W WINDS 25 TO 40
KT. SEAS 8 TO 16 FT.

...GALE WARNING...
.LOW 59N172W 1006 MB MOVING E 20 KT. WITHIN 180 NM S SEMICIRCLE
WINDS 35 TO 45 KT. SEAS 18 TO 30 FT. ELSEWHERE OVER THE BERING
SEAS S OF 61N AND E OF 180W WINDS 25 TO 40 KT. SEAS 11 TO 22 FT.
.24 HOUR FORECAST LOW DISSIPATED. CONDITIONS DESCRIBED ABOVE
WITH LOW 56N132W.

...GALE WARNING...
.12 HOUR FORECAST LOW W OF AREA 43N157E 1004 MB. FROM 38N TO 44N
BETWEEN 160E AND 162E WINDS 25 TO 35 KT. SEAS 9 TO 13 FT.
.24 HOUR FORECAST LOW 47N163E 1002 MB. WITHIN 180 NM S
SEMICIRCLE WINDS 35 TO 45 KT. SEAS 10 TO 20 FT. ELSEWHERE FROM
41N TO 48N BETWEEN 160E AND 170E WINDS 25 TO 35 KT. SEAS 8 TO 17
FT.
.48 HOUR FORECAST LOW 53N176E 1008 MB. WITHIN 360 NM SE
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 10 TO 19 FT.

...GALE WARNING...
.OVER FORECAST WATERS S OF 37N BETWEEN 155W AND 170W AREA OF E
WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST WITHIN 480 NM E OF A LINE FROM 40N169W TO
30N164W SE WINDS 20 TO 30 KT. SEAS TO 12 FT.
.48 HOUR FORECAST NEW LOW 39N167W 1014 MB. WITHIN 240 NM E AND
SE QUADRANTS WINDS 25 TO 35 KT. SEAS 10 TO 14 FT. ELSEWHERE
WITHIN 480 NM E AND 660 NM SE QUADRANTS WINDS TO 25 KT. SEAS TO
11 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY OVER ICE FREE FORECAST WATERS
N OF 62N AND W OF ALASKA.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 61N AND
W OF ALASKA.

.SYNOPSIS AND FORECAST.

.OVER FORECAST WATERS FROM 39N TO 50N E OF 130W AREA OF NW WINDS
20 TO 30 KT. SEAS 9 TO 18 FT.
.06 HOUR FORECAST CONDITIONS DIMINISHED.

.24 HOUR FORECAST FROM 30N TO 38N BETWEEN 119W AND 126W AREA OF
N WINDS TO 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST CONDITIONS DESCRIBED IN WARNINGS SECTION ABOVE.

.48 HOUR FORECAST LOW W OF AREA 33N154E 1000 MB. OVER FORECAST
WATERS WITHIN 720 NM E QUADRANT WINDS 20 TO 30 KT. SEAS TO 11 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN THE REGION
BOUNDED BY A LINE FROM 49N172E TO 40N175E TO 46N178W TO 49N172E
AND WITHIN 90 NM OF 35N169W.
.24 HOUR FORECAST DENSE FOG FROM 32N TO 38N BETWEEN 160W AND
170W AND WITHIN 120 NM OF 48N159W.
.48 HOUR FORECAST DENSE FOG FROM 32N TO 46N BETWEEN 158W AND
169W AND FROM 46N TO 49N BETWEEN 147W AND 158W.

.HIGH 41N148W 1042 MB MOVING SW 10 KT WILL TURN SE AFTER 24
HOURS.
.24 HOUR FORECAST HIGH 39N149W 1041 MB.
.48 HOUR FORECAST HIGH 38N146W 1041 MB.

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

.HIGH 47N161W 1041 MB MOVING SE 20 KT.
.24 HOUR FORECAST HIGH DISSIPATED.

.24 HOUR FORECAST HIGH 43N178E 1028 MB.
.48 HOUR FORECAST HIGH 49N167W 1030 MB.

.48 HOUR FORECAST HIGH 45N170E 1027 MB.

.FORECASTER REINHART. 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 SAT FEB 24.
24 HOUR FORECAST VALID 1800 UTC SUN FEB 25.
48 HOUR FORECAST VALID 1800 UTC MON FEB 26.

.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.

.FROM 13N TO 17N W OF 122W NE TO E WINDS 20 TO 25 KT. SEAS 9 TO
11 FT. ELSEWHERE WITHIN AREA BOUNDED BY 27N140W TO 30N130W TO
30N116W TO 24N112W TO 01N118W TO 03N140W TO 27N140W WINDS 20 KT
OR LESS. SEAS TO 10 FT IN MIXED NE AND NW SWELL.
.24 HOUR FORECAST FROM 11N TO 13N W OF 132W NE TO E WINDS 20 TO
25 KT. SEAS 9 TO 11 FT. ELSEWHERE WITHIN AREA BOUNDED BY 28N140W
TO 30N130W TO 30N118W TO 10N114W TO 06N140W TO 28N140W WINDS 20
KT OR LESS. SEAS TO 10 FT IN MIXED NE AND NW SWELL.
.48 HOUR FORECAST FROM 10N TO 26N W OF 135W NE TO E WINDS 20 TO
25 KT. SEAS 8 TO 11 FT. ELSEWHERE WITHIN AREA BOUNDED BY 28N140W
TO 30N128W TO 30N120W TO 10N120W TO 07N140W TO 28N140W WINDS 20
KT OR LESS. SEAS TO 9 FT IN MIXED NE AND NW SWELL.

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

.GULF OF CALIFORNIA FROM 25N TO 30N NW TO N WINDS 20 TO 25 KT.
SEAS LESS THAN 8 FT.
.18 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 2100 UTC SAT FEB 24...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH FROM 09N83W TO 01N103W TO 03N115W. ITCZ FROM
03N115W TO 03N124W TO 07N140W. SCATTERED MODERATE ISOLATED
STRONG CONVECTION FROM 11N TO 15N BETWEEN 104W AND 116W.

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.



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