Hurricane Warnings in Effect

Atlantic:  High Seas

East and Central North Pacific High Seas Forecast

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FZPN02 KWBC 241725
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1745 UTC FRI SEP 24 2021

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC SEP 24. 
24 HOUR FORECAST VALID 1200 UTC SEP 25.
48 HOUR FORECAST VALID 1200 UTC SEP 26.

.WARNINGS.

...STORM WARNING...
.LOW 60N147W 984 MB NEARLY STATIONARY. BETWEEN 60 AND 360 NM S
AND 120 NM AND 360 NM SW QUADRANTS WINDS 35 TO 50 KT. SEAS 12 TO
20 FT. ELSEWHERE WITHIN 300 NM NE...360 NM SE...540 NM SW...AND
180 NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 16 FT. ALSO FROM
47N TO 60N BETWEEN 129W AND 162W WINDS 20 TO 30 KT. SEAS 8 TO 14
FT IN MIXED SWELL. 
.24 HOUR FORECAST LOW 60N147W 1004 MB. FROM 50N TO 61N BETWEEN
126W AND 154W WINDS LESS THAN 25 KT. SEAS 8 TO 13 FT IN MIXED
SWELL.
.48 HOUR FORECAST LOW DISSIPATED. CONDITIONS DIMINISHED.

...STORM WARNING...
.LOW 48N178E 1001 MB MOVING E 35 KT. FROM 39N TO 50N BETWEEN 171W
AND 168E. WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST LOW 49N158W 994 MB. FROM 38N TO 50N BETWEEN
153W AND 166W WINDS 25 TO 40 KT. SEAS 9 TO 15 FT. ELSEWHERE FROM
38N TO 52N BETWEEN 151W TO 168W WINDS 20 TO 30 KT. SEAS TO 9 FT.
.36 HOUR FORECAST LOW 50N154W 990 MB. BETWEEN 60 NM AND 300 NM 
SW AND 60 NM AND 240 NM NW QUADRANTS WINDS 35 TO 50 KT. SEAS 12 
TO 18 FT. 
.48 HOUR FORECAST LOW 49N143W 983 MB. BETWEEN 60 NM AND 300 NM
SE...60 NM AND 480 NM SW...AND 120 AND 300 NM NW QUADRANTS WINDS
35 TO 50 KT. SEAS 18 TO 28 FT. ELSEWHERE WITHIN 420 NM NE...600
NM SE...720 NM SW AND 1020 NM NW QUADRANTS WINDS 20 TO 30 KT.
SEAS 8 TO 16 FT IN MIXED SWELL.  

...GALE WARNING...
.COMPLEX LOW WITH MAIN CENTER NW OF AREA NEAR 64N179W 1001 MB
MOVING SE 10 KT. N OF 59N W OF 170W WINDS TO 25 KT. SEAS TO 8
FT.
.24 HOUR FORECAST COMBINED LOW 61N172W 1002 MB. BETWEEN 120 NM
AND 300 NM SW QUADRANT WINDS 25 TO 35 KT. SEAS 9 TO 13 FT.
ELSEWHERE FROM 47N TO 62N BETWEEN 166W AND 178E WINDS 20 TO 30
KT. SEAS 8 TO 12 FT IN MIXED SWELL.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS ABSORBED BY LOW
49N143W DESCRIBED ABOVE.

...GALE WARNING...
.48 HOUR FORECAST NEW LOW 49N127W 999 MB. WITHIN 120 NM NE AND E
OF A LINE FROM 49N127W TO THE LOW TO 52N129W WINDS 25 TO 35 KT.
SEAS 9 TO 12 FT. ELSEWHERE FROM 43N TO 52N BETWEEN 124W AND 129W
WINDS TO 20 TO 30 KT. SEAS TO 10 FT.

.SYNOPSIS AND FORECAST.

.FROM 36N TO 46N BETWEEN 123W AND 131W AREA OF N WINDS 20 TO 30
KT. SEAS TO 9 FT.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.LOW W OF AREA NEAR 49N155E 1009 MB MOVING S 5 KT. FROM 48N TO
51N W OF 164E WINDS TO 25 KT. SEAS TO 8 FT. 
.24 HOUR FORECAST LOW W OF AREA 47N155E 1008 MB. WITHIN 180 NM NE
AND E OF A LINE FROM 51N161E TO 48N167E WINDS TO 25 KT. SEAS TO 9
FT.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 51N168E 1004 MB.
WITHIN 420 NM NE...660 NM SE...600 NM SW...AND WITHIN 120 NM NW
QUADRANTS WINDS 20 TO 30 KT. SEAS TO 10 FT.

.48 HOUR FORECAST FROM 34N TO 43N BETWEEN 178E AND 170E AREA OF
SE TO S WINDS TO 25 KT. SEAS TO 8 FT.

.48 HOUR FORECAST WITHIN 120 NM NW OF A LINE FROM 34N160E TO
38N166E AREA OF NE WINDS TO 25 KT. SEAS TO 8 FT.

.KARYMSKY VOLCANO AT POSITION 54.0N 159.3E LOCATED ON THE
SOUTHERN KAMCHATKA PENINSULA IS IN A STATE OF UNREST. VOLCANIC
ASH EMISSIONS CONTINUE...WITH THE RESULTING ASH CLOUD MOVING SE
FROM THE VOLCANO. MARINERS TRAVELING IN THE VICINITY OF KARYMSKY
ARE URGED TO EXERCISE CAUTION. PLEASE REPORT ANY OBSERVATIONS OF
VOLCANIC ASH OR FLOATING VOLCANIC DEBRIS TO THE OCEAN PREDICTION
CENTER BY CALLING 301 683 1520.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 120 NM NW OF
A LINE FROM 41N161E TO 45N176E.
.24 HOUR FORECAST DENSE FOG FROM 42N TO 46N BETWEEN 175E AND
166E...AND N OF 61N W OF 174W.
.48 HOUR FORECAST DENSE FOG WITHIN AN AREA BOUNDED BY A LINE FROM
43N172E TO 50N172E TO 48N179E TO 43N172E AND N OF 64N E OF 168W.

.HIGH 45N133W 1024 MB MOVING SW 10 KT.
.24 HOUR FORECAST HIGH MERGED WITH HIGH 32N144W.

.HIGH 36N140W 1024 MB MOVING SW 10 KT.
.24 HOUR FORECAST HIGH 32N144W 1022 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

.HIGH 38N165W 1016 MB MOVING SE 20 KT.
.24 HOUR FORECAST HIGH 31N156W 1022 MB.
.48 HOUR FORECAST HIGH S OF AREA.

.HIGH 55N167W 1016 MB MOVING SE 30 KT.
.24 HOUR FORECAST HIGH DISSIPATED.

.HIGH 36N178W 1029 MB DRIFTING E.
.24 HOUR FORECAST HIGH 36N177W 1027 MB.
.48 HOUR FORECAST HIGH 37N172W 1028 MB.

.24 HOUR FORECAST NEW HIGH 46N180W 1024 MB.
.48 HOUR FORECAST HIGH 44N167W 1030 MB.

.FORECASTER FUTTERMAN/COLLINS. 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 1200 UTC FRI SEP 24.
24 HOUR FORECAST VALID 1200 UTC SAT SEP 25.
48 HOUR FORECAST VALID 1200 UTC SUN SEP 26.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 14N95W TO 13N97W TO 15N95W TO 16N95W TO 15N95W TO
14N95W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20
TO 30 KT. SEAS TO 8 FT.
.24 HOUR FORECAST WITHIN 14N95W TO 14N97W TO 15N96W TO 16N95W TO
14N95W...INCLUDING THE GULF OF TEHUANTEPEC...NE WINDS 20 TO 25 
KT. SEAS TO 8 FT.
.48 HOUR FORECAST WITHIN 15N95W TO 14N96W TO 15N95W TO 16N95W TO
15N95W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO
25 KT. SEAS TO 8 FT.

.WITHIN 03S106W TO 03S112W TO 03.4S120W TO 02S118W TO 01S117W TO
03S106W WINDS 20 KT OR LESS. SEAS 8 FT IN S TO SW SWELL.
.24 HOUR FORECAST WITHIN 03.4S99W TO 03.4S120W TO 02S116W TO 
02S116W TO 03S99W TO 03.4S99W WINDS 20 KT OR LESS. SEAS 8 FT IN S
TO SW SWELL.
.30 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

.WITHIN 16N138W TO 07N137W TO 08N140W TO 16N139W TO 19N140W TO
16N138W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED NW AND E
SWELL.
WITHIN 17N137W TO 17N140W TO 19N140W TO 19N139W TO 18N138W TO 
17N137W WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED NW AND SE SWELL.
.12 HOUR FORECAST CONDITIONS IMPROVE. 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 1500 UTC FRI SEP 24...

.LOW PRES 1010 MB NEAR 20.5N126.5W...SCATTERED MODERATE ISOLATED
STRONG WITHIN 120 NM NE QUADRANT.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM LOW PRES 1009 MB NEAR 11N74W TO 
09N89W TO 12N98W TO 10N114W. ITCZ BEGINS NEAR 10N114W TO 11N135W 
TO BEYOND 12.5N140W. SCATTERED MODERATE ISOLATED STRONG
CONVECTION
FROM 06.5N TO 15N BETWEEN 79W AND 96W...FROM 09N TO 15N BETWEEN 
96W AND 106W...AND FROM 08.5N TO 12N BETWEEN 130W AND 138W. 
SCATTERED MODERATE TO STRONG CONVECTION FROM 06.5N TO 17N BETWEEN
110W AND 127W. 



.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI

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

SYNOPSIS VALID 1200 UTC SEP 24 2021.
24 HOUR FORECAST VALID 1200 UTC SEP 25 2021.
48 HOUR FORECAST VALID 1200 UTC SEP 26 2021.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT FROM 30N169W TO 28N177E TO 28N167E TO 29N160E NEARLY
STATIONARY. NE TO E WINDS 20 TO 25 KT AND SEAS 8 TO 9 FT N
OF FRONT. ISOLATED MODERATE TSTMS WITHIN 60 NM OF FRONT.
.24 HOUR FORECAST DISSIPATING FRONT FROM 30N169W TO 28N178W
TO 30N167E. WINDS DIMINISHED TO 20 KT OR LESS AND SEAS LOWERED
TO 8 FT OR LESS.
.48 HOUR FORECAST FRONT DISSIPATED.

.TROUGH FROM 20N169E TO 13N165E MOVING NW SLOWLY. ISOLATED
MODERATE TO STRONG TSTMS WITHIN 150 NM OF TROUGH.
.24 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH FROM 16N176E TO 13N179E MOVING SW SLOWLY. ISOLATED
MODERATE TSTMS WITHIN 60 NM OF TROUGH.
.24 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH FROM 14N142W TO 09N150W TO 05N156W MOVING NW 10 KT.
WINDS 20 TO 30 KT FROM 14N TO 08N BETWEEN 142W AND 153W.
SCATTERED MODERATE TSTMS WITHIN 180 NM S OF TROUGH...AND
WITHIN 120 NM N OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 17N146W TO 11N152W TO 08N160W.
WINDS 20 TO 30 KT WITHIN 120 NM OF TROUGH.
.48 HOUR FORECAST TROUGH FROM 20N152W TO 14N156W TO 10N162W.
WINDS 20 TO 25 KT FROM 21N TO 18N BETWEEN 150W AND 157W.

.NE TO E WINDS 20 TO 25 KT FROM 21N TO 16N E OF 155W...AND
FROM 26N TO 24N BETWEEN 161W AND 164W.
.24 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 20N TO 17N
BETWEEN 145W AND 151W...AND FROM 25N TO 20N BETWEEN 159W AND
164W.
.48 HOUR FORECAST WINDS DIMINISHED TO 20 KT OR LESS.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.SEAS 8 TO 10 FT N OF 23N BETWEEN 155W AND 169E.
.24 HOUR FORECAST SEAS 8 TO 12 FT FROM 15N TO 10N BETWEEN 145W
AND 153W.
.48 HOUR FORECAST SEAS 8 TO 10 FT FROM 21N TO 15N BETWEEN 150W
AND 155W.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

.ITCZ FROM 06N161W TO 06N167W TO 05N172W TO 05N179W. SCATTERED
MODERATE TSTMS WITHIN 180 NM OF ITCZ.

.ISOLATED MODERATE TO STRONG TSTMS FROM 24N TO 20N BETWEEN 175E
AND 169E...AND FROM 08N TO 03N W OF 166E.

$$

.FORECASTER AHUE. HONOLULU HI.