National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FZPN01 KWBC 170410
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC WED APR 17 2024

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC APR 17.
24 HOUR FORECAST VALID 0000 UTC APR 18.
48 HOUR FORECAST VALID 0000 UTC APR 19.

.WARNINGS.

...STORM WARNING...
.COMPLEX LOW WITH MAIN LOW 50N154W 1006 MB MOVING NW 15 KT AND
SECOND LOW 50N161W 1001 MB MOVING NE 10 KT. WITHIN 360 NM N AND
420 NM NE QUADRANTS OF MAIN LOW...AND BETWEEN 360 NM AND 540 NM
NW QUADRANT OF SECOND LOW WINDS 25 TO 40 KT. SEAS 9 TO 17 FT.
ELSEWHERE WITHIN 600 NM E OF A LINE FROM 56N163W TO THE FIRST
LOW TO 40N150W AND NW OF A LINE FROM THE SECOND LOW TO 41N158W
TO 37N170W WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST COMBINED LOW 55N149W 993 MB. BETWEEN 90 NM AND
360 NM N...BETWEEN 90 NM AND 420 NM NE...AND BETWEEN 120 NM AND
540 NM E QUADRANTS WINDS 35 TO 50 KT. SEAS 9 TO 23 FT...HIGHEST
NEAR 57N149W. ELSEWHERE N OF 34N BETWEEN 144W AND 176W WINDS 25
TO 40 KT. SEAS 8 TO 16 FT.
.48 HOUR FORECAST LOW 50N155W 996 MB. N OF 56N BETWEEN 154W AND
147W WINDS 35 TO 50 KT. SEAS 17 TO 21 FT. ELSEWHERE WITHIN 720
NM N AND 840 NM S SEMICIRCLES  WINDS 25 TO 40 KT. SEAS 10 TO 19
FT.

...GALE WARNING...
.LOW W OF AREA NEAR 37N159E 993 MB MOVING NE 10 KT. FROM 30N TO
46N W OF 170E WINDS 25 TO 35 KT. SEAS 8 TO 15 FT.
.24 HOUR FORECAST LOW W OF AREA NEAR 42N157E 998 MB. FROM 30N TO
50N W OF 175E WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST LOW W OF AREA NEAR 45N159E 1007 MB. FROM 37N
TO 50N BETWEEN 169E AND 179W AND FROM 33N TO 41N W OF 165E WINDS
TO 25 KT. SEAS TO 9 FT.

...GALE WARNING...
.FROM 31N TO 43N BETWEEN 120W AND 129W AREA OF N WINDS 20 TO 30
KT. SEAS TO 10 FT.
.06 HOUR FORECAST FROM 31N TO 44N BETWEEN 120W AND 129W AREA OF
N WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST FROM 33N TO 45N BETWEEN 122W AND 129W AREA OF
N WINDS 25 TO 35 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST FROM 39N TO 46 E OF 127W WINDS TO 25 KT. SEAS
TO 10 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY N OF 58N W OF 170W. ELSEWHERE
LIGHT TO MODERATE FREEZING SPRAY N OF 56N W OF 170W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 57N W OF
166W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF A LINE
FROM 58N175E TO 54N167W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY NE OF A LINE
FROM 58N166W TO 58N170W TO 59N172W. ELSEWHERE LIGHT TO MODERATE
FREEZING SPRAY N OF A LINE FROM 58N164W TO 54N168W TO 55N174W TO
60N180W.

.SYNOPSIS AND FORECAST.

.LOW 31N149W 1010 MB MOVING N 05 KT.FROM 30N TO 40N BETWEEN 168W
AND 139W WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.
.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.E OF A LINE FROM 47N126W TO 50N130W WINDS TO 25 KT. SEAS TO 8
FT.
.24 HOUR FORECAST CONDITIONS DISSIPATED.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 44N TO 55N
BETWEEN 145W AND 153W...N OF 52N BETWEEN 171W AND 155.
.24 HOUR FORECAST DENSE FOG FROM 40N TO 48N W OF 170E AND N OF
47N BETWEEN 158W AND 167W.
.48 HOUR FORECAST DENSE FOG FROM 47N TO 54N BETWEEN 155W AND
164W...N OF THE ALEUTIAN ISLANDS BETWEEN 162W AND 170W...FROM
54N TO 59N W OF 177W...AND FROM 38N TO 51N W OF 175E.


.FORECASTER MUSONDA. 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 WED APR 17.
24 HOUR FORECAST VALID 0000 UTC THU APR 18.
48 HOUR FORECAST VALID 0000 UTC FRI APR 19.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 20N108W TO 30N118W TO 21N140W TO 05N140W TO 07N102W TO
20N108W NE WINDS 20 TO 25 KT. SEAS 8 TO 10 FT IN W TO NW SWELL.
.24 HOUR FORECAST WITHIN 15N123W TO 18N132W TO 14N140W TO
07N140W TO 06N124W TO 09N116W TO 15N123W WINDS 20 KT OR LESS.
SEAS 8 TO 10 FT IN E TO SE SWELL.
.48 HOUR FORECAST WITHIN 14N137W TO 15N140W TO 06N140W TO
10N134W TO 14N137W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE TO
E SWELL.

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

CONVECTION VALID AT 0300 UTC WED APR 17...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
TROUGH FROM 08N78W TO 06N95W. ITCZ FROM 06N95W TO 05N115W TO
BEYOND 08N135W TO 08N140W. SCATTERED MODERATE FROM 05N TO 07N
BETWEEN 129W AND 131W.

$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.