High Seas Forecast
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
000
FZPN01 KWBC 231605
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC SAT SEP 23 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC SEP 23.
24 HOUR FORECAST VALID 1200 UTC SEP 24.
48 HOUR FORECAST VALID 1200 UTC SEP 25.

.WARNINGS.

...GALE WARNING...
.LOW 56N157W 993 MB MOVING NE 10 KT. WITHIN 240 NM SW QUADRANT
WINDS 25 TO 35 KT. SEAS TO 11 FT. ELSEWHERE WITHIN 720 NM
NW...420 NM NE...960 NM SE AND 540 NM SW QUADRANTS WINDS TO 25
KT. SEAS TO 11 FT.
.24 HOUR FORECAST LOW 58N150W 992 MB. WITHIN 180 NM S SEMICIRCLE
WINDS 25 TO 35 KT. SEAS 8 TO 14 FT. ELSEWHERE WITHIN 240 NM
NE...360 NM SE AND 480 NM SW QUADRANTS WINDS TO 25 KT. SEAS TO
10 FT.
.48 HOUR FORECAST LOW 59N146W 1007 MB. WITHIN 60 NM N AND 180 NM
S SEMICIRCLES WINDS TO 25 KT. SEAS TO 7 FT.

...GALE WARNING...
.LOW 41N179E 1001 MB MOVING NE 20 KT. WITHIN 240 NM W SEMICIRCLE
WINDS 25 TO 40 KT. SEAS 8 TO 13 FT. ELSEWHERE WITHIN 540 NM OF
LOW CENTER EXCEPT 840 NM SE QUADRANT WINDS TO 25 KT. SEAS TO 8
FT.
.24 HOUR FORECAST LOW 43N169W 999 MB. WITHIN 240 NM NW QUADRANT
WINDS 25 TO 35 KT. SEAS 8 TO 14 FT. ELSEWHERE WITHIN 780 NM S
SEMICIRCLE...AND 420 NM NW AND 540 NM NE QUADRANTS WINDS TO 25
KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW 46N161W 994 MB. WITHIN 240 NM NW AND 360
NM SW QUADRANTS WINDS 25 TO 40 KT. SEAS 8 TO 14 FT. ELSEWHERE
WITHIN 480 NM NW...600 NM NE...900 NM SE AND 600 NM SW QUADRANTS
WINDS TO 25 KT. SEAS TO 10 FT.

...GALE WARNING...
.LOW 43N162W 1005 MB MOVING NE 30 KT. WITHIN 420 NM S SEMICIRCLE
WINDS TO 25 KT. SEAS TO 10 FT.
.24 HOUR FORECAST LOW 48N146W 1002 MB. WITHIN 300 NM SE AND 420
NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 14 FT. ELSEWHERE
WITHIN 240 NM NW...480 NM NE...660 NM SE AND 720 NM SW QUADRANTS
WINDS TO 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW 53N132W 1006 MB. WITHIN 180 NM N AND 600
NM S SEMICIRCLES WINDS 20 TO 30 KT. SEAS TO 11 FT.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW 59N165W 994 MB. WITHIN 300 NM NW AND
240 NM SW QUADRANTS WINDS 25 TO 40 KT. SEAS TO 12 FT. ELSEWHERE
WITHIN 420 NM W SEMICIRCLE WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW 58N162W 996 MB. WITHIN 540 NM W AND 120 NM
E SEMICIRCLES WINDS 20 TO 30 KT. SEAS TO 9 FT.

...GALE WARNING...
.24 HOUR FORECAST LOW W OF AREA NEAR 36N154E 1005 MB. FROM 30N
TO 41N W OF 168E WINDS TO 25 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST LOW 36N163E 1002 MB. WITHIN 300 NM N
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 8 TO 14 FT. ELSEWHERE FROM
30N TO 44N W OF 176E WINDS TO 25 KT. SEAS TO 8 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.

.FROM 31N TO 42N BETWEEN 120W AND 130W WINDS TO 25 KT. SEAS TO
10 FT.
.24 HOUR FORECAST FROM 30N TO 45N BETWEEN 122W AND 130W WINDS TO
25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST FROM 30N TO 43N BETWEEN 122W AND 130W WINDS 20
TO 30 KT. SEAS TO 9 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 180 NM SE OF
A LINE FROM 41N162W TO 51N145W.
.24 HOUR FORECAST DENSE FOG WITHIN 240 NM SE OF A LINE FROM
42N161W TO 50N144W.
.48 HOUR FORECAST DENSE FOG FROM 44N TO 47N BETWEEN 133W AND
145W AND FROM 40N TO 49N BETWEEN 145W AND 156W.

.HIGH 42N137W 1026 MB MOVING S 10 KT.
.24 HOUR FORECAST HIGH 38N138W 1024 MB.
.48 HOUR FORECAST LITTLE CHANGE.

.HIGH 32N158W 1024 MB NEARLY STATIONARY.
.24 HOUR FORECAST HIGH DISSIPATED.

.HIGH 55N174E 1024 MB MOVING S 10 KT.
.24 HOUR FORECAST HIGH DISSIPATED.

.24 HOUR FORECAST HIGH 47N166E 1026 MB.
.48 HOUR FORECAST HIGH 48N172E 1028 MB.

.24 HOUR FORECAST HIGH 31N167E 1020 MB.
.48 HOUR FORECAST HIGH MOVED S OF AREA.

.FORECASTER HOLLEY. 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 1200 UTC SAT SEP 23.
24 HOUR FORECAST VALID 1200 UTC SUN SEP 24.
48 HOUR FORECAST VALID 1200 UTC MON SEP 25.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW PRES NEAR 18N105W 1005 MB. WITHIN 90 NM S SEMICIRCLE WINDS
20 KT OR LESS. SEAS TO 8 FT IN MIXED SWELL.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
20N106.5W 1005 MB. WITHIN 90 NM OF CENTER WINDS 20 TO 25 KT.
SEAS 8 TO 9 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
22N107W 1004 MB. WITHIN 90 NM SE AND 60 NM NW SEMICIRCLES WINDS
20 TO 30 KT. SEAS 8 TO 10 FT.

.FROM 10N TO 13N BETWEEN 103W AND 116W SW TO W WINDS 20 TO 25
KT. SEAS 9 TO 11 FT. ELSEWHERE FROM 09N TO 14N BETWEEN 102W AND
120W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST FROM 09N TO 14N BETWEEN 98W AND 115W WINDS 20
KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST FROM 09N TO 12N BETWEEN 101W AND 112W WINDS 20
KT OR LESS. SEAS 8 TO 9 FT IN MIXED SWELL.

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

CONVECTION VALID AT 1500 UTC SAT SEP 23...

INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

MONSOON TROUGH FROM 10N74W TO 09N85W TO LOW PRES NEAR 13N91W TO
15N97W TO 14N101W RESUMES FROM 14N108W TO LOW PRES NEAR 13N136W.
SCATTERED MODERATE ISOLATED STRONG WITHIN 180 NM SW OF AXIS
BETWEEN 90W AND 97W...AND FROM 10N TO 12N BETWEEN 130W AND 136W.
SCATTERED MODERATE WITHIN 90 NM S OF AXIS BETWEEN 109W AND 119W.

$$
.FORECASTER MUNDELL. NATIONAL HURRICANE CENTER.



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.