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NOAA>NWS>NCEP>OPC>Marine>Pacific>High Seas>North Pacific High Seas Forecast

North Pacific High Seas Forecast

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FZPN01 KWBC 240331
HSFEP1

HIGH SEAS FORECAST 
NWS OCEAN PREDICTION CENTER WASHINGTON DC 
0430 UTC SUN SEP 24 2017 

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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. 

SECURITE 

PACIFIC N OF 30N AND S OF 67N E OF A LINE FROM BERING STRAIT 
TO 50N 160E 

SYNOPSIS VALID 0000 UTC SEP 24. 
24 HOUR FORECAST VALID 0000 UTC SEP 25. 
48 HOUR FORECAST VALID 0000 UTC SEP 26. 

.WARNINGS. 

...GALE WARNING...
.LOW 58N155W 992 MB MOVING NE 10 KT. OVER FORECAST WATERS WITHIN 
240 NM SW QUADRANT WINDS 25 TO 35 KT. SEAS TO 11 FT. ELSEWHERE 
WITHIN 420 NM S SEMICIRCLE AND WITHIN 600 NM NW QUADRANT WINDS 
20 TO 30 KT. SEAS TO 11 FT.
.24 HOUR FORECAST LOW 59N149W 1000 MB. WITHIN 300 NM S AND SW 
QUADRANTS WINDS TO 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

...GALE WARNING...
.LOW 42N172W 1000 MB MOVING NE 15 KT. WITHIN 600 NM S AND 360 NM 
N SEMICIRCLES WINDS 25 TO 35 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST LOW 44N164W 997 MB. WITHIN 720 NM SE AND 420 
NM NW SEMICIRCLES WINDS 20 TO 30 KT. SEAS TO 11 FT.
.48 HOUR FORECAST LOW 50N153W 995 MB. WITHIN 300 NM NW...600 NM 
SW...AND 540 NM NE QUADRANTS...AND WITHIN 420 NM E AND SE OF A 
LINE FROM 50N148W TO 33N161W WINDS 20 TO 30 KT. SEAS TO 11 FT.

...GALE WARNING...
.LOW 44N158W 1002 MB MOVING NE 30 KT. OVER FORECAST WATERS 
WITHIN 420 NM SE OF A FRONT FROM 42N161W TO LOW CENTER TO 
47N147W TO 54N136W WINDS 20 TO 30 KT. SEAS TO 11 FT.
.18 HOUR FORECAST LOW 49N144W 1005 MB. WITHIN 420 NM S QUADRANT 
WINDS 25 TO 35 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW 51N140W 1006 MB. WITHIN 480 NM SE 
SEMICIRCLE WINDS 20 TO 30 KT. SEAS TO 12 FT. 
.48 HOUR FORECAST LOW 53N133W 1009 MB. WITHIN 300 NM S QUADRANT 
WINDS TO 25 KT. SEAS TO 8 FT.

...GALE WARNING...
.24 HOUR FORECAST LOW 37N160E 1005 MB. OVER FORECAST WATERS 
WITHIN 480 NM E SEMICIRCLE WINDS 25 TO 40 KT. SEAS 8 TO 15 FT.
.48 HOUR FORECAST LOW 37N163W 1004 MB. FROM 30N TO 44N W OF 179E 
WINDS 25 TO 35 KT. SEAS 8 TO 16 FT.

.SYNOPSIS AND FORECAST. 

.BOGOSLOF VOLCANO AT 53.92N 168.03W IS CURRENTLY IN A HEIGHTENED 
STATE OF UNREST. MARINERS TRAVELING IN THE VICINITY OF BOGOSLOF 
VOLCANO ARE URGED TO EXERCISE CAUTION. IF MARINERS ENCOUNTER ANY 
VOLCANIC ASH...REPORT THE OBSERVATION TO THE OCEAN PREDICTION 
CENTER BY CALLING 301-683-1520. 

.OVER FORECAST WATERS E OF A LINE FROM 45N129W TO 33N128W WINDS 
20 TO 30 KT. SEAS TO 12 FT.
.24 HOUR FORECAST E OF A LINE FROM 43N128W TO 34N127W WINDS 20 
TO 30 KT. SEAS TO 10 FT.
.48 HOUR FORECAST E OF A LINE FROM 43N129W TO 32N129W WINDS 20 
TO 30 KT. SEAS 8 TO 14 FT.

.24 HOUR FORECAST NEW LOW 58N163W 997 MB. OVER FORECAST WATERS 
WITHIN 240 NM S QUADRANT AND WITHIN 360 NM NE OF A LINE FROM 
54N168W TO 59N175W TO 62N175W WINDS 20 TO 30 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW 55N159W 1005 MB. WITHIN 300 NM NW OF A 
LINE FROM 64N161W TO 56N170W WINDS TO 25 KT. SEAS TO 8 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 300 NM NW OF 
A LINE FROM 47N142W TO 37N161W. 
.24 HOUR FORECAST DENSE FOG WITHIN 360 NM N AND NW OF A LINE 
FROM 38N159W TO 48N134W. 
.48 HOUR FORECAST DENSE FOG FROM 42N TO 51N BETWEEN 133W AND 
153W.

.HIGH 41N137W 1025 MB MOVING S 10 KT. 
.24 HOUR FORECAST HIGH 37N136W 1026 MB. 
.48 HOUR FORECAST LITTLE CHANGE.

.HIGH 53N174E 1023 MB MOVING S 15 KT.
.24 HOUR FORECAST HIGH DISSIPATED.

.HIGH 47N161E 1025 MB MOVING E 15 KT.
.24 HOUR FORECAST HIGH 47N170E 1026 MB.
.48 HOUR FORECAST HIGH 49N171E 1028 MB.

.HIGH 33N164E 1018 MB MOVING SE 15 KT.
.24 HOUR FORECAST HIGH 31N172E 1020 MB.
.48 HOUR FORECAST HIGH MOVED S OF AREA.

.FORECASTER SOMMERVILLE. 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 SEP 24.
24 HOUR FORECAST VALID 0000 UTC MON SEP 25.
48 HOUR FORECAST VALID 0000 UTC TUE SEP 26.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM PILAR NEAR 18.7N 105.3W 1003 MB AT 0300 UTC SEP 
24 MOVING N OR 360 DEG AT 4 KT. MAXIMUM SUSTAINED WINDS 35 KT 
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM S 
SEMICIRCLE...50 NM NE QUADRANT AND 70 NM NW QUADRANT. SEAS TO 11 
FT WITHIN 60 NM N SEMICIRCLE. ELSEWHERE WITHIN 90 NM NE AND 150 
NM SW SEMICIRCLES WINDS 20 TO 33 KT. SEAS TO 10 FT. SCATTERED 
MODERATE CONVECTION WITHIN 120 NM E SEMICIRCLE. SCATTERED STRONG 
CONVECTION WITHIN 180 NM W SEMICIRCLE.  
.24 HOUR FORECAST TROPICAL STORM PILAR NEAR 20.3N 105.6W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE 
WINDS WITHIN 60 NM NE QUADRANT...30 NM SE QUADRANT...0 NM SW 
QUADRANT...AND 70 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
90 NM SW QUADRANT WITH SEAS TO 13 FT. ELSEWHERE WITHIN 90 NM NE 
AND 150 NM SW SEMICIRCLES WINDS 20 TO 33 KT. SEAS TO 10 FT. 
.48 HOUR FORECAST TROPICAL STORM PILAR NEAR 21.9N 105.9W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE 
WINDS WITHIN 30 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE. SEAS 12 
FT OR GREATER WITHIN 90 NM SW QUADRANT WITH SEAS TO 13 FT. 
ELSEWHERE WITHIN 90 NM N AND 150 NM S SEMICIRCLES WINDS 20 TO 33 
KT. SEAS TO 10 FT. 
.72 HOUR FORECAST TROPICAL DEPRESSION PILAR NEAR 23.3N 106.4W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL PILAR NEAR 24.7N 107.3W. MAXIMUM 
SUSTAINED WINDS 25 KT GUSTS 35 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.

.FROM 10N TO 14N BETWEEN 102W AND 113W SW TO W WINDS 20 TO 25 
KT. SEAS 8 TO 10 FT. ELSEWHERE FROM 08.5N TO 15.5N BETWEEN 98W 
AND 136W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST FROM 10.5N TO 12.5N BETWEEN 101W AND 111W SW 
TO W WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. ELSEWHERE FROM 08.5N TO 
14N BETWEEN 96W AND 115W WINDS 20 KT OR LESS. SEAS TO 9 FT IN 
MIXED SWELL.
.48 HOUR FORECAST FROM 10N TO 13N BETWEEN 96W AND 102W SW TO W 
WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. ELSEWHERE FROM 08N TO 12.5N 
BETWEEN 95W AND 112W WINDS 20 KT OR LESS. SEAS TO 8 FT IN MIXED 
SWELL.

.48 HOUR FORECAST LOW PRES NEAR 13.5N125W 1010 MB. WITHIN 150 NM 
NW AND 210 NM SE SEMICIRCLES WINDS 20 TO 25 KT. SEAS TO 8 FT.

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

CONVECTION VALID AT 0200 UTC SAT SEP 23... 

INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

MONSOON TROUGH FROM 09N74W TO 10N84W TO 17N103W...THEN RESUMES 
FROM NEAR 15N109W TO LOW PRES NEAR 12.5N127W 1009 MB TO LOW PRES 
NEAR 12.5N139W 1009 MB TO BEYOND 11N140W. SCATTERED MODERATE 
ISOLATED STRONG CONVECTION FROM 06N TO 10N BETWEEN 79W AND 91W. 
SCATTERED MODERATE TO STRONG CONVECTION FROM 10.5N TO 16N 
BETWEEN 95W AND 110W...AND 09.5N TO 12.5N BETWEEN 126W AND 138W. 

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.


NOAA/ National Weather Service
National Centers for Environmental Prediction
NOAA Center for Weather and Climate Prediction (NCWCP)
Ocean Prediction Center
Mr. Darin Figurskey
Chief, Ocean Forecast Branch
NCWCP, W/NP41
5830 University Research Court
College Park, Maryland 20740-3818

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Page last modified:  Monday, July 25, 2016 12:55:39 UTC