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
000
FZPN01 KWBC 240400
HSFEP1

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

.WARNINGS.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW 59N151W 992 MB. FRONT TO EXTEND FROM
60N150W TO 57N140W TO 53N137W TO 44N145W. BETWEEN THE FRONT AND
THE COAST N OF 58N WINDS 25 TO 35 KT. SEAS 9 TO 13 FT. ELSEWHERE
BETWEEN 180 NM AND 660 NM S QUADRANT AND WITHIN 120 NM NE AND E
OF FRONT WINDS 20 TO 30 KT. SEAS 8 TO 13 FT...EXCEPT NE AND E OF
FRONT TO 9 FT.
.48 HOUR FORECAST LOW 59N152W 993 MB. FRONT TO EXTEND FROM
60N144W TO 55N136W TO 51N140W. BETWEEN THE FRONT AND 133W WINDS
TO 25 KT. SEAS TO 8 FT.

...GALE WARNING...
.LOW 57N167W 993 MB MOVING NE 15 KT AND SLOWING AFTER 18 HOURS
THEN TURNING SE 10 KT AFTER 24 HOURS. OVER FORECAST WATERS
WITHIN 360 NM NW QUADRANT AND FROM 48N TO 56N BETWEEN 150W AND
176E WINDS 20 TO 30 KT. SEAS TO 12 FT...HIGHEST S OF THE
ALEUTIAN ISLANDS.
.24 HOUR FORECAST LOW 59N158W 990 MB. WITHIN 420 NM SW QUADRANT
AND ELSEWHERE N OF 59N BETWEEN 160W AND 170W WINDS 20 TO 30 KT.
SEAS TO 12 FT.
.36 HOUR FORECAST 58N157W 989 MB. WITHIN 300 NM W QUADRANT WINDS
25 TO 35 KT. SEAS 9 TO 14 FT.
.48 HOUR FORECAST LOW 56N155W 991 MB. WITHIN 240 NM S AND SW
QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 15 FT. ELSEWHERE FROM 50N
TO 56N BETWEEN 147W AND 167W AND N OF 56N BETWEEN 160W AND 170W
WINDS 20 TO 30 KT. SEAS TO 11 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.

.LOW 54N135W 1004 MB MOVING SE 10 KT. WITHIN 180 NM SE AND 360
NM S AND SW QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.LOW W OF AREA 46N159E 1002 MB MOVING NE 15 KT. OVER FORECAST
WATERS FROM 40N TO 49N W OF 167E WINDS TO 25 KT. SEAS TO 11 FT.
.24 HOUR FORECAST LOW 49N166E 1004 MB. WITHIN 240 NM N AND 300
NM NE QUADRANTS AND WITHIN 180 NM SE AND S OF A FRONT FROM
49N172E TO 42N160E WINDS TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
MERGED WITH LOW W OF AREA 51N158E DESCRIBED BELOW.

.FROM 37N TO 40N BETWEEN 124W AND 126W AREA OF N TO NW WINDS TO
25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST FROM 33N TO 43N BETWEEN 120W AND 127W AREA OF
N TO NW WINDS 20 TO 30 KT. SEAS TO 11 FT.
.48 HOUR FORECAST FROM 33N TO 44N BETWEEN 120W AND 128W N TO NW
WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.

.LOW 43N177E 1017 MB MOVING NE 10 KT. WITHIN 180 NM SE
SEMICIRCLE WINDS TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.24 HOUR FORECAST FROM 43N TO 47N BETWEEN 150W AND 174W AREA OF
W TO SW WINDS TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST WITHIN 180 NM SE OF A LINE FROM 49N140W TO
44N165W WINDS TO 25 KT. SEAS TO 9 FT.

.48 HOUR FORECAST LOW W OF AREA NEAR 51N158E 987 MB. OVER
FORECAST WATERS W OF A LINE FROM 55N174E TO 50N178W TO 46N179W
TO 40N172E WINDS 20 TO 30 KT. SEAS TO 12 FT.

.48 HOUR FORECAST POST-TROPICAL CYCLONE KENNETH JUST S OF AREA
NEAR 29N137W 1011 MB. OVER FORECAST WATERS WITHIN 180 NM N
SEMICIRCLE WINDS TO 25 KT. SEAS 8 TO 11 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM BETWEEN 150W AND A
LINE FROM 54N152W TO 44N168W AND FROM 40N TO 48N BETWEEN 75W AND
176E AND OVER FORECAST WATERS FROM 40N TO 48N W OF 167E.
.24 HOUR FORECAST DENSE FOG FROM 44N TO 46N BETWEEN 150W AND
155W...WITHIN 180 NM SE OF A LINE FROM 48N160W TO 44N176W AND W
OF A LINE FROM 50N175E TO 47N178E TO 39N160E.
.48 HOUR FORECAST DENSE FOG WITHIN A REGION BOUNDED BY A LINE
FROM 37N160E TO 50N162E TO 54N169E TO 47N177W TO 37N160E.

.HIGH 41N161W 1031 MB MOVING SE 10 KT.
.24 HOUR FORECAST HIGH 39N155W 1029 MB.
.48 HOUR FORECAST HIGH 38N152W 1024 MB.

.HIGH 37N168E 1021 MB MOVING NE 10 KT.
.24 HOUR FORECAST HIGH 39N172E 1022 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

.24 HOUR FORECAST HIGH 55N178E 1019 MB.
.48 HOUR FORECAST HIGH 52N174W 1018 MB.

.48 HOUR FORECAST NEW HIGH 40N142W 1025 MB.

.48 HOUR FORECAST NEW HIGH 34N173E 1023 MB.

.FORECASTER BANCROFT. 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 THU AUG 24.
24 HOUR FORECAST VALID 0000 UTC FRI AUG 25.
48 HOUR FORECAST VALID 0000 UTC SAT AUG 26.

.WARNINGS.

...GALE WARNING...
.POST-TROPICAL CYCLONE KENNETH NEAR 25.7N 136.1W 1009 MB. FROM
25N TO 28N BETWEEN 134W AND 137W NE TO E WINDS 30 TO 35 KT. SEAS
12 TO 14 FT. ELSEWHERE FROM 25N TO 29N BETWEEN 133W AND 139.5W N
TO NE WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. REMAINDER OF AREA FROM
21N TO 29N W OF 133W WINDS 20 KT OR LESS. SEAS TO 8 FT IN MIXED
SWELL.
.24 HOUR FORECAST LOW PRES NEAR 28N136W 1010 MB. FROM 28N TO
29.5N BETWEEN 136W AND 139W N TO NE WINDS 30 TO 35 KT. SEAS 10
TO 12 FT. ELSEWHERE N OF 27N BETWEEN 134W AND 139W N TO NE WINDS
20 TO 25 KT. SEAS 8 TO 10 FT. REMAINDER OF AREA N OF 26N W OF
135W WINDS 20 KT OR LESS. SEAS TO 9 FT IN MIXED SWELL.
.48 HOUR FORECAST LOW PRES NEAR 29N137W 1011 MB. FROM 28.5 TO
30N BETWEEN 134.5 AND 139W N TO NE WINDS 20 TO 25 KT. SEAS 9 TO
11 FT. ELSEWHERE N OF 27N W OF 135W WINDS 20 KT OF LESS. SEAS 8
TO 10 FT IN MIXED SWELL.

.SYNOPSIS AND FORECAST.

.36 HOUR FORECAST FROM 06.5N TO 10N BETWEEN 113W AND 118.5W
WINDS 20 KT OR LESS. SEAS TO 8 FT PRIMARILY IN SW SWELL.
.48 HOUR FORECAST FROM 06N TO 10.5N BETWEEN 109W AND 121W WINDS
20 KT OR LESS. SEAS TO 8 FT PRIMARILY IN SW SWELL.

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

CONVECTION VALID AT 0230 UTC THU AUG 24...

.POST-TROPICAL CYCLONE KENNETH...SCATTERED MODERATE N OF 25N W
OF 137W.

.TROPICAL WAVE ALONG 98W-99W FROM 07N TO 15N. SCATTERED MODERATE
FROM 07N TO 13N BETWEEN 96W AND 101W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

MONSOON TROUGH FROM 10N86W TO 09N100W TO 11N120W TO A 1011 MB
LOW NEAR 10N131W TO BEYOND 09N140W. SCATTERED MODERATE WITHIN
100 NM EITHER SIDE OF MONSOON TROUGH.

$$

.FORECASTER ERA. 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.