High Seas Forecast
Issued by NWS

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936
FZPN01 KWBC 252211
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC SUN SEP 25 2016

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SEP 25.
24 HOUR FORECAST VALID 1800 UTC SEP 26.
48 HOUR FORECAST VALID 1800 UTC SEP 27.

.WARNINGS.

...GALE WARNING...
.LOW 50N139W 1008 MB MOVING NE 20 KT. FRONT EXTENDS FROM 52N132W
TO 50N138W TO 46N140W TO 38N146W. WITHIN 240 NM E OF THE FRONT
AND OVER FORECAST WATERS E OF A LINE FROM 49N127W TO 53N131W
WINDS 25 TO 35 KT. SEAS 9 TO 15 FT.
.24 HOUR FORECAST LOW 54N130W 1008 MB. FROM 46N TO 53N BETWEEN
128W AND 136W WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
.36 HOUR FORECAST LOW DISSIPATED INLAND AND ASSOCIATED
CONDITIONS DIMINISHED.

...GALE WARNING...
.LOW 43N172E 1012 MB MOVING E 10 KT. WITHIN 300 NM N SEMICIRCLE
WINDS 25 TO 35 KT. SEAS 8 TO 14 FT. ELSEWHERE BETWEEN 120 NM AND
420 NM S SEMICIRCLE WINDS 20 TO 30 KT. SEAS TO 10 FT.
.24 HOUR FORECAST LOW 43N178E 1009 MB. WITHIN 240 NM E OF A LINE
FROM 45N180W TO 37N180W WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
ELSEWHERE WITHIN 360 NM NE AND SW...AND 240 NM NW QUADRANTS
WINDS 20 TO 30 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW 43N175W 1008 MB. WITHIN 240 NM NE AND E OF
A LINE FROM 45N176W TO 42N171W TO 36N174W WINDS 25 TO 35 KT.
SEAS 8 TO 14 FT. ELSEWHERE FROM 37N TO 45N BETWEEN 180W AND 175E
WINDS TO 25 KT. SEAS TO 11 FT.

...GALE WARNING...
.LOW W OF AREA 62N179W 997 MB MOVING SE 20 KT. OVER FORECAST
WATERS WITHIN 540 NM S AND SE QUADRANTS WINDS TO 25 KT. SEAS TO
8 FT.
.24 HOUR FORECAST LOW 58N163W 1004 MB. FROM 49N TO 54N BETWEEN
156W AND 170W WINDS 25 TO 35 KT. SEAS 8 TO 13 FT. ELSEWHERE
WITHIN 300 NM SW QUADRANT WINDS TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST LOW TO REFORM NEAR 54N147W 1012 MB. BETWEEN
180 NM AND 540 NM S...AND 180 NM AND 360 NM W QUADRANTS WINDS 20
TO 30 KT. SEAS 8 TO 13 FT.

...GALE WARNING...
.24 HOUR FORECAST OVER FORECAST WATERS W OF A LINE FROM 48N165E
TO 56N175E AREA OF S TO SW WINDS 20 TO 30 KT. SEAS TO 11 FT.
.48 HOUR FORECAST LOW NW OF AREA 58N170E 986 MB. OVER FORECAST
WATERS W OF A LINE FROM 54N178W TO 60N171W TO 65N170W WINDS 25
TO 35 KT. SEAS 8 TO 14 FT.

.SYNOPSIS AND FORECAST.

.OVER FORECAST WATERS FROM 39N TO 43N BETWEEN 125W AND 128W AREA
OF N WINDS TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST WITHIN 120 NM E OF A LINE FROM 43N127W TO
36N131W AREA OF N WINDS LESS THAN 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST E OF A LINE FROM 37N135W TO 43N132W TO 46N127W
AREA OF N TO NE WINDS 20 TO 30 KT. SEAS TO 10 FT.

.WITHIN 180 NM W AND NW OF A FRONT FROM 33N152W TO 30N156W AREA
OF E TO NE WINDS TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST WITHIN 180 NM W AND NW OF A FRONT FROM 34N147W
TO 30N155W AREA OF E TO NE WINDS TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST WITHIN 240 NM N OF A LINE FROM 35N142W TO
32N156W AREA OF E TO NE WINDS TO 25 KT. SEAS TO 9 FT.

.LOW 45N145W 1014 MB MOVING NE 20 KT. WITHIN 180 NM SW
SEMICIRCLE AND SE QUADRANT WINDS TO 25 KT. SEAS 8 TO 11 FT.
.24 HOUR FORECAST LOW 48N133W 1016 MB. WITHIN 240 NM W
SEMICIRCLE WINDS TO 25 KT. SEAS 8 TO 11 FT.
.48 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.

.48 HOUR FORECAST LOW 41N160E 1011 MB. WITHIN 180 NM OF CENTER
WINDS 20 TO 30 KT. SEAS TO 8 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 41N TO 44N
BETWEEN 173E AND 176E.
.24 HOUR FORECAST DENSE FOG FROM 42N TO 46N BETWEEN 177E AND
177W.
.48 HOUR FORECAST DENSE FOG FROM 44N TO 50N BETWEEN 175W AND
179E.

.HIGH 37N137W 1026 MB MOVING SW 10 KT.
.24 HOUR FORECAST HIGH 34N141W 1025 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

.HIGH 43N131W 1027 MB MOVING SW 10 KT.
.24 HOUR FORECAST HIGH DISSIPATED.

.HIGH 42N170W 1033 MB MOVING E 20 KT.
.24 HOUR FORECAST HIGH 42N161W 1034 MB.
.48 HOUR FORECAST HIGH 42N157W 1034 MB.

.HIGH 48N167E 1026 MB MOVING E 15 KT.
.24 HOUR FORECAST HIGH DISSIPATED.

.HIGH 35N161E 1023 MB MOVING SE 10 KT.
.24 HOUR FORECAST HIGH 33N164E 1023 MB.
.48 HOUR FORECAST HIGH 33N167E 1021 MB.

.48 HOUR FORECAST HIGH 39N171E 1022 MB.

.FORECASTER CLARK. 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 SUN SEP 25.
24 HOUR FORECAST VALID 1800 UTC MON SEP 26.
48 HOUR FORECAST VALID 1800 UTC TUE SEP 27.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL DEPRESSION EIGHTEEN-E NEAR 16.1N 119.6W 1005 MB AT
2100 UTC SEP 25 MOVING N OR 360 DEG AT 5 KT. MAXIMUM SUSTAINED
WINDS 30 KT GUSTS 40 KT. ELSEWHERE WITHIN 180 NM SE AND 120 NM NW
SEMICIRCLES WINDS 20 TO 33 KT. SEAS 10 TO 14 FT WITHIN 90 NM E
QUADRANT...AND 8 TO 10 FT WITHIN 210 NM SE AND 150 NM NW
SEMICIRCLES.
.24 HOUR FORECAST TROPICAL STORM EIGHTEEN-E NEAR 17.4N 119.1W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE
WINDS WITHIN 60 NM NE QUADRANT...80 NM SE QUADRANT...0 NM SW
QUADRANT...AND 40 NM NW QUADRANT. WINDS 20 TO 33 KT AND SEAS 12
FT OR GREATER WITHIN 150 NM SE AND 90 NM NW SEMICIRCLES WITH SEAS
TO 17 FT. ELSEWHERE WITHIN 240 NM E AND 180 NM W SEMICIRCLES
WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL DEPRESSION EIGHTEEN-E NEAR 19.1N
118.0W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WINDS 20 TO 30
KT AND SEAS 12 FT OR GREATER WITHIN 90 NM OF CENTER WITH SEAS TO
15 FT. ELSEWHERE FROM 13N TO 24N BETWEEN 113W AND 120W WINDS 20
KT OR LESS. SEAS 8 TO 12 FT IN MIXED SWELL.
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW EIGHTEEN-E NEAR 21.5N
117.5W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST- TROPICAL REMNANT LOW EIGHTEEN-E NEAR
24.0N 118.5W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
.120 HOUR FORECAST POST- TROPICAL REMNANT LOW EIGHTEEN-E NEAR
25.0N 120.0W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

.SYNOPSIS AND FORECAST.

.LOW PRES NEAR 12N138W 1011 MB. WITHIN 60 NM N QUADRANT WINDS 20
TO 25 KT. SEAS 8 FT. ELSEWHERE FROM 13N TO 19N W OF 135W WINDS 20
KT OR LESS. SEAS 8 TO 11 FT IN NE SWELL.
.24 HOUR FORECAST LOW PRES W OF AREA. FROM 10N TO 14N W OF 138W
WINDS 20 KT OR LESS. SEAS 8 FT IN NE SWELL.
.48 HOUR FORECAST LITTLE CHANGE.

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

CONVECTION VALID AT 2100 UTC SUN SEP 25...

.TROPICAL DEPRESSION EIGHTEEN-E...NUMEROUS MODERATE CONVECTION
WITHIN
210 NM OF THE SE SEMICIRCLE OF THE CENTER.

.SCATTERED MODERATE TO ISOLATED STRONG N OF 04N BETWEEN 80W AND
87W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N86W TO 11N97W TO 08N107W TO
09N113W...RESUMING AT 13N123W TO 1011 MB LOW PRESSURE NEAR
11N139W TO BEYOND 11N140W. SCATTERED MODERATE WITHIN 60 NM S OF
THE MONSOON TROUGH AXIS BETWEEN 92W AND 100W AND WITHIN 120 NM
S OF AXIS BETWEEN 135W AND 140W.

$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.



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