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
143
FZPN02 KWBC 042325
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2345 UTC FRI APR 04 2025

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

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

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 1800 UTC APR 04.
24 HOUR FORECAST VALID 1800 UTC APR 05.
48 HOUR FORECAST VALID 1800 UTC APR 06.

.WARNINGS.

...STORM WARNING...
.COMPLEX LOW WITH MEAN CENTER NEAR 50N155W 973 MB MOVING N 10 KT.
WITHIN 660 NM W AND SW QUADRANTS WINDS 40 TO 50 KT. SEAS 21 TO 36
FT. ELSEWHERE WITHIN 480 NM E...960 NM S...AND 840 NM W AND NW
QUADRANTS...AND WITHIN 240 NM N AND E OF A LINE FROM 57N150W TO
54N141W TO 44N136W WINDS 25 TO 35 KT. SEAS 10 TO 28 FT...HIGHEST
IN SW QUADRANT.
.24 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER NEAR 51N153W 981
MB. WITHIN 660 NM S SEMICIRCLE...EXCEPT 900 NM S QUADRANT...720
NM NW QUADRANT...AND WITHIN 120 NM N AND E OF A LINE FROM 58N149W
TO 54N137W TO 49N130W WINDS 30 TO 45 KT. SEAS 10 TO 27
FT...HIGHEST IN S QUADRANT.
.48 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER NEAR 54N150W 990
MB. WITHIN 540 NM E...780 NM S...AND 600 NM NW QUADRANTS WINDS 25
TO 40 KT. SEAS 10 TO 21 FT.

...GALE WARNING...
.LOW 46N165E 1002 MB MOVING NE 10 KT. WITHIN 360 NM N
QUADRANT...300 NM N AND NE OF A LINE FROM LOW CENTER TO
43N180W...AND WITHIN 300 NM E AND SE OF A LINE FROM 43N164E TO
38N160E WINDS 25 TO 40 KT. SEAS 9 TO 18 FT.
.24 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER W OF AREA 48N158E
995 MB AND SECOND CENTER 46N173E 1004 MB. WITHIN 600 NM S
QUADRANT OF FIRST CENTER AND 180 NM N AND NE OF A LINE FROM
52N165E TO 46N177E WINDS 25 TO 40 KT. SEAS 10 TO 20 FT. ELSEWHERE
WITHIN 300 NM E OF A LINE FROM SECOND CENTER TO 36N167E WINDS 25
TO 35 KT. SEAS 9 TO 15 FT.
.48 HOUR FORECAST LOW 51N169E 1004 MB. WITHIN 660 NM S QUADRANT
WINDS 25 TO 40 KT. SEAS 12 TO 20 FT.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW 40N162W 1016 MB. WITHIN 240 NM S
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 10 TO 20 FT.
.48 HOUR FORECAST LOW 40N137W 1011 MB. WITHIN 360 NM S AND 120 NM
SE QUADRANTS WINDS 25 TO 35 KT. SEAS 12 TO 18 FT.

...GALE WARNING...
.48 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 49N178W 999 MB
AND SECOND CENTER 47N169W 1007 MB. WITHIN 480 NM S AND SW
QUADRANTS OF FIRST CENTER AND 480 NM S QUADRANT OF SECOND CENTER
WINDS 25 TO 40 KT. SEAS 10 TO 18 FT.

.SYNOPSIS AND FORECAST.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 40N TO 56N
BETWEEN 134W AND 142W...FROM 43N TO 64N BETWEEN 154W AND
172W...AND FROM 44N TO 52N W OF 178W.
.24 HOUR FORECAST DENSE FOG FROM 47N TO 60N BETWEEN 155W AND 168W
AND FROM 40N TO 54N W OF 180W.
.48 HOUR FORECAST DENSE FOG WITHIN 120 NM N OF A LINE FROM
53N166E TO 45N164W.

.LIGHT FREEZING SPRAY NE OF A LINE FROM 61N178W TO 56N170W.
.24 HOUR FORECAST LIGHT FREEZING SPRAY NE OF A LINE FROM 56N168W

TO 60N177W.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY E AND NE OF A
LINE FROM 56N167W TO 57N170W TO 61N177W.

.FORECASTER ACHORN. OCEAN PREDICTION CENTER.

NWS 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 FRI APR 4.
24 HOUR FORECAST VALID 1800 UTC SAT APR  5.
48 HOUR FORECAST VALID 1800 UTC SUN APR  6.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 16N125W TO 21N138W TO 20N140W TO 07N140W TO 09N128W TO
16N125W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE TO E SWELL.
.24 HOUR FORECAST WITHIN 12N124W TO 16N128W TO 21N140W TO
08N140W TO 06N125W TO 10N114W TO 12N124W WINDS 20 KT OR LESS.
SEAS 8 TO 10 FT IN NE SWELL.
.48 HOUR FORECAST CONDITIONS MERGED WITH AREA TO THE N.

.WITHIN 22N109W TO 23N110W TO 23N111W TO 21N111W TO 21N110W TO
21N109W TO 22N109W NW WINDS 20 TO 25 KT. SEAS 8 FT.
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.06 HOUR FORECAST WITHIN 12N86W TO 12N88W TO 12N89W TO 11N88W TO
11N86W TO 12N86W...INCLUDING GULF OF PAPAGAYO...E TO SE WINDS 20
TO 30 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.24 HOUR FORECAST WITHIN 24N108W TO 25N108W TO 25N109W TO 24N110W
TO 23N109W TO 23N108W TO 24N108W...INCLUDING SOUTHERN GULF OF
CALIFORNIA...NW TO N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.36 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.
.24 HOUR FORECAST COLD FRONT NW OF AREA. WITHIN 30N138W TO
30N140W TO 28N140W TO 30N138W WINDS 20 KT OR LESS. SEAS 8 FT IN W
TO NW SWELL.

.48 HOUR FORECAST COLD FRONT FROM 30N135W TO 27N140. WITHIN
30N129W TO 23N134W TO 30N140W TO 08N140W TO 06N123W TO 10N109W TO
30N129W WINDS 20 KT OR LESS. SEAS 10 TO 12 FT IN N SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

CONVECTION VALID AT 2100 UTC FRI APR 4...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

SURFACE TROUGH AXIS EXTENDS FROM 07N77W TO 06N110W TO 02N127W.
SCATTERED MODERATE UP TO 180 NM ALONG EITHER SIDE OF THE TROUGH.

.FORECASTER CHAN. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 1800 UTC APR 04 2025.
24 HOUR FORECAST VALID 1800 UTC APR 05 2025.
48 HOUR FORECAST VALID 1800 UTC APR 06 2025.

.WARNINGS.


.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 30N145W 25N150W 19N163W MOVING E 10 KT ALONG 30N AND
NEARLY STATIONARY S OF 25N.
.24 HOUR FORECAST FRONT 30N141W 27N147W THENCE TROUGH 19N164W.
.48 HOUR FORECAST WEAK FRONT 28N140W 26N144W THENCE TROUGH 21N162W
19N172W.

.24 HOUR FORECAST NEW FRONT 30N162E 27N160E.
.48 HOUR FORECAST FRONT MOVED N OF AREA.

.NE TO E WINDS 20 TO 25 KT FROM 08N TO 24N BETWEEN 165W AND
162E...AND FROM 11N TO 18N E OF 155W.
.24 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 07N TO 24N
BETWEEN160W AND 162E...AND FROM 05N TO 18N E OF 160W.
.48 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 04N TO 26N
BETWEEN
156W AND 165E...AND FROM 07N TO 19N BETWEEN 140W AND 156W.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.SEAS 8 TO 12 FT N OF LINE 30N147W 21N160W 26N175W. SEAS 8 TO 9 FT
FROM 11N TO 21N BETWEEN 170W AND 162E.
.24 HOUR FORECAST SEAS 12 TO 17 FT N OF LINE 30N144W 24N153W
24N164W. SEAS 8 TO 12 FT ELSEWHERE N OF LINE 30N140E 20N153W
26N175W. SEAS 8 TO 10 FT FROM 12N TO 26N BETWEEN 160W AND 166E.
.48 HOUR FORECAST SEAS 12 TO 14 FT N OF 22N E OF 156W. SEAS 8 TO
12
FT ELSEWHERE N OF A LINE 17N140W 10N150W 27N170W. SEAS 8 TO 11 FT
FROM 08N TO 25N BETWEEN 157W AND 166E.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

.ITCZ 06N170E 03N160E. ISOLATED MODERATE TSTMS WITHIN 120 NM OF
ITCZ.

.ISOLATED TSTMS FROM 16N TO 18N BETWEEN 170E AND 165E.


$$

.FORECASTER TSAMOUS. HONOLULU HI.