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
000
FZPN02 KWBC 181125
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1145 UTC FRI AUG 18 2017

CCODE/1:31:12:01:00/AOW+POR/NWS/CCODE
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC AUG 18.
24 HOUR FORECAST VALID 0600 UTC AUG 19.
48 HOUR FORECAST VALID 0600 UTC AUG 20.

.WARNINGS.

...GALE WARNING...
.POST-TROPICAL CYCLONE BANYAN 47N178W 1000 MB MOVING NE 10 KT
WILL TURN SE AFTER 24 HOURS. WITHIN 180 NM N AND NE QUADRANTS
WINDS 25 TO 35 KT. SEAS 9 TO 16 FT. ELSEWHERE FROM 38N TO 51N
BETWEEN 166W AND 171E WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST POST-TROPICAL CYCLONE BANYAN 50N173W 1000 MB.
WITHIN 180 NM N AND NE...360 NM SW...AND 240 NM W AND NW
QUADRANTS WINDS 20 TO 30 KT. SEAS TO 12 FT.
.48 HOUR FORECAST POST-TROPICAL CYCLONE BANYAN 49N167W 1003 MB.
WITHIN 240 NM SE...420 NM W AND SW...AND 300 NM NW QUADRANTS
WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.

...GALE WARNING...
.OVER FORECAST WATERS FROM 41N TO 43N E OF 126W N WINDS 25 TO 35
KT. SEAS 8 TO 14 FT. ELSEWHERE FROM 35N TO 45N BETWEEN 124W AND
131W N TO NE WINDS TO 25 KT. SEAS TO 11 FT.
.24 HOUR FORECAST FROM 39N TO 42N BETWEEN 124W AND 127W N WINDS
25 TO 35 KT. SEAS 8 TO 14 FT. ELSEWHERE FROM 34N TO 49N BETWEEN
124W AND 132W N TO NE WINDS TO 25 KT. SEAS TO 12 FT.
.48 HOUR FORECAST FROM 38N TO 43N BETWEEN 124W AND 127W N WINDS
30 TO 40 KT. SEAS 9 TO 16 FT. ELSEWHERE FROM 33N TO 45N BETWEEN
123W AND 131W N WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.

...GALE WARNING...
.12 HOUR FORECAST NEW LOW 46N169W 1003 MB. WITHIN 180 NM SE
QUADRANT WINDS 25 TO 35 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW 49N163W 1003 MB. WITHIN 240 NM SE
SEMICIRCLE WINDS 25 TO 35 KT. SEAS TO 12 FT. ELSEWHERE WITHIN
240 NM NE AND SW...AND 300 NM SE QUADRANTS WINDS TO 25 KT. SEAS
TO 10 FT.
.48 HOUR FORECAST LOW 52N155W 1003 MB. WITHIN 300 NM E AND NE...
AND 420 NM SE QUADRANTS WINDS 20 TO 30 KT. SEAS TO 9 FT.

...GALE WARNING...
.36 HOUR FORECAST FROM 35N TO 41N BETWEEN 168E AND 160E SE WINDS
TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST LOW 40N160E 1001 MB. WITHIN 420 NM E AND NE
QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 13 FT. ELSEWHERE FROM 35N
TO 46N BETWEEN 172E AND 160E WINDS TO 25 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.

.COMPLEX LOW WITH MAIN CENTER 59N147W 1003 MB NEARLY STATIONARY.
FROM 48N TO 57N BETWEEN 132W AND 168W WINDS 20 TO 30 KT. SEAS
TO 11 FT.
.24 HOUR FORECAST LOW 59N148W 1004 MB. WITHIN 360 NM S QUADRANT
WINDS TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST LOW 60N145W 1007 MB. WINDS LESS THAN 25 KT.
SEAS LESS THAN 8 FT.

.LOW 43N154W 1016 MB MOVING NE 10 KT. WITHIN 180 NM OF LOW
CENTER WINDS TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW DISSIPATED. FROM 42N TO 46N BETWEEN 145W
AND 151W SW WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST FROM 46N TO 50N BETWEEN 132W AND 142W SW WINDS
TO 25 KT. SEAS TO 8 FT.

.LOW 37N172E 1012 MB MOVING NE 30 KT WILL SLOW AFTER 24 HOURS.
FRONT EXTENDS FROM 38N179E TO LOW CENTER TO 34N166E. WITHIN 180
NM E AND SE OF FRONT WINDS TO 25 KT. SEAS TO 11 FT.
.24 HOUR FORECAST LOW 45N173W 1007 MB. WITHIN 360 NM S
SEMICIRCLE...AND 420 NM W AND NW QUADRANTS WINDS 20 TO 30 KT.
SEAS TO 12 FT.
.48 HOUR FORECAST LOW 50N159W 1003 MB. WITHIN 360 NM S AND SE
QUADRANTS WINDS 20 TO 30 KT. SEAS TO 12 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 120 NM OF
46N133W AND 44N150W...AND ALSO WITHIN 420 NM OF 44N174W.
.24 HOUR FORECAST DENSE FOG WITHIN 240 NM OF 46N147W...FROM 38N
TO 53N BETWEEN 160W AND 172W...AND FROM 53N TO 57N W OF 180W.
.48 HOUR FORECAST DENSE FOG FROM 42N TO 52N BETWEEN 132W AND
160W...FROM 51N TO 56W W OF 167W...AND WITHIN 180 NM OF 40N161E.

.HIGH 41N141W 1029 MB MOVING NE 10 KT WILL TURN S AFTER 24 HOURS.
.24 HOUR FORECAST HIGH 43N137W 1030 MB.
.48 HOUR FORECAST HIGH 40N137W 1029 MB.

.HIGH 35N159W 1024 MB NEARLY STATIONARY.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST HIGH MERGED WITH HIGH 35N167W BELOW.

.HIGH 46N160W 1023 MB MOVING S 10 KT.
.24 HOUR FORECAST HIGH DISSIPATED.

.HIGH 34N172W 1023 MB STATIONARY WILL MOVE E AFTER 24 HOURS.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST HIGH 35N167W 1023 MB.

.HIGH 61N173W 1010 MB MOVING SE 10 KT.
.24 HOUR FORECAST HIGH 59N167W 1012 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

.HIGH 49N166E 1019 MB MOVING SE 15 KT WILL TURN E AFTER 24 HOURS.
.24 HOUR FORECAST HIGH 42N170E 1021 MB.
.48 HOUR FORECAST HIGH 42N180W 1023 MB.

.FORECASTER MILLS. 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 0600 UTC FRI AUG 18.
24 HOUR FORECAST VALID 0600 UTC SAT AUG 19.
48 HOUR FORECAST VALID 0600 UTC SUN AUG 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW PRES NEAR 14N114W 1008 MB. WITHIN 120 NM NE SEMICIRCLE OF
LOW WINDS 20 TO 25 KT. SEAS TO 9 FT.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
15N120W 1007 MB. WITHIN 120 NM NE SEMICIRCLE OF LOW WINDS 20 TO
25 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
17N126W 1004 MB. WITHIN 150 NM N AND 90 NM S SEMICIRCLES OF LOW
WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.

.WITHIN 30 NM OF LINE FROM 16N95W TO 14.5N95W...INCLUDING THE
GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS TO 8 FT.
.12 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO 15N95W...
INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS TO
8 FT.
.36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.WITHIN 30 NM OF LINE FROM 11N86W TO 10.5N88W... INCLUDING THE
GULF OF PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.12 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 0900 UTC FRI AUG 18...

.TROPICAL WAVE AXIS ALONG 94W N OF 07N...ISOLATED STRONG FROM
07N TO 09N BETWEEN 92W AND 98W.

.LOW PRES NEAR 14N114W...SCATTERED MODERATE ISOLATED STRONG
WITHIN 180 NM SW SEMICIRCLE.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N84W TO 07N105W RESUMES FROM LOW PRES NEAR
14N113W TO 18N140W. SCATTERED MODERATE ISOLATED STRONG FROM 08N
TO 10N BETWEEN 116W AND 120W. SCATTERED MODERATE FROM 08N TO 10N
BETWEEN 132W AND 138W.

.FORECASTER MUNDELL. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 0600 UTC AUG 18 2017.
24 HOUR FORECAST VALID 0600 UTC AUG 19 2017.
48 HOUR FORECAST VALID 0600 UTC AUG 20 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 13N149W 1009 MB MOVING NW SLOWLY. TROUGH FROM 14N140W TO
LOW TO 09N156W TO 08N164W NEARLY STATIONARY. ISOLATED MODERATE
TO LOCALLY STRONG TSTMS WITHIN 120 NM OF LOW. ISOLATED MODERATE
TSTMS ELSEWHERE FROM 09N TO 14N E OF 150W...AND WITHIN 150 NM SE
AND S OF TROUGH W OF 150W.
.24 HOUR FORECAST LOW 14N150W 1010 MB. TROUGH FROM 14N140W TO
LOW TO 09N156W.
.48 HOUR FORECAST LOW DISSIPATED. TROUGH FROM 16N151W TO
11N155W.

.TROUGH FROM 14N170W TO 08N174W MOVING W 10 KT. NE TO E WINDS 20
TO 25 KT AND SEAS 8 TO 9 FT FROM 13N TO 16N BETWEEN 166W AND
173W. ISOLATED MODERATE TO STRONG TSTMS FROM 10N TO 15N BETWEEN
166W AND 170W. ISOLATED MODERATE TSTMS FROM 06N TO 10N BETWEEN
171W AND 178W.
.24 HOUR FORECAST WEAK TROUGH FROM 14N174W TO 09N176W. WINDS
EASED TO 20 KT OR LESS AND SEAS SUBSIDED TO 8 FT OR LESS.
.48 HOUR FORECAST TROUGH DISSIPATED.

.RIDGE FROM 30N172E TO 27N160E MOVING N SLOWLY.

.WINDS 20 KT OR LESS AND SEAS 8 FT OR LESS OVER REST OF FORECAST
AREA.

.ISOLATED MODERATE TSTMS FROM 12N TO 17N W OF 166E.

.ITCZ FROM 06N180E TO 05N168E TO 05N160E. ISOLATED MODERATE
TSTMS WITHIN 90 NM OF ITCZ.

$$

.FORECASTER KINEL. HONOLULU HI.



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