East and Central North Pacific High Seas Forecast

Hurricane Warnings in Effect
East and Central North Pacific High Seas Forecast

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FZPN02 KWBC 300525
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0545 UTC WED SEP 30 2020

CCODE/2:31:12:11:00/AOW+POR+AOE/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC SEP 30. 
24 HOUR FORECAST VALID 0000 UTC OCT 01.
48 HOUR FORECAST VALID 0000 UTC OCT 02.

.WARNINGS.

...HURRICANE FORCE WIND WARNING...
.COMPLEX LOW WITH MAIN CENTER 50N157W 972 MB MOVING NE 20 KT
TURNING N AFTER 12 HOURS AND SECOND CENTER 47N152W 975 MB MOVING
NE 20 KT. WITHIN 240 NM S AND SW QUADRANTS OF SECOND CENTER...AND
WITHIN 120 NM W AND NW OF A FRONT EXTENDING FROM MAIN CENTER TO
52N158W TO 54N156W...AND WITHIN 180 NM N OF A FRONT EXTENDING
FROM 54N156W TO 55N152W TO 56N145W TO 56N140W WINDS 40 TO 55 KT.
SEAS 16 TO 29 FT. ELSEWHERE FROM 39N TO 59N BETWEEN 125W AND 167W
WINDS 25 TO 40 KT. SEAS 12 TO 24 FT. ALSO FROM 30N TO 39N BETWEEN
124W AND 169W WINDS 20 TO 30 KT. SEAS 8 TO 19 FT...HIGHEST WITHIN
900 NM S QUADRANT OF SECOND CENTER IN NW SWELL.
.06 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 51N155W 971 MB.
WITHIN 120 NM NW AND N OF A FRONT TO EXTEND FROM 55N157W TO
57N152W TO 58N143W WINDS 50 TO 65 KT. SEAS 20 TO 35 FT...HIGHEST
IN THE SHELIKOF STRAIT.
.24 HOUR FORECAST COMBINED LOW 56N158W 974 MB. BETWEEN 180 NM AND
300 NM N...180 NM AND 540 NM SE...AND 180 NM AND 480 NM SW
QUADRANTS WINDS 25 TO 40 KT. SEAS 13 TO 23 FT. ELSEWHERE N OF 47N
BETWEEN 137W AND 178W WINDS 20 TO 30 KT. SEAS 8 TO 19
FT...HIGHEST WITHIN 900 NM SE QUADRANT.
.48 HOUR FORECAST LOW 60N169W 990 MB. N OF 58N BETWEEN ALASKA AND
178E WINDS 20 TO 30 KT. SEAS TO 8 FT.

...STORM WARNING...
.POST-TROPICAL CYCLONE KUJIRA 40N160E 984 MB MOVING E 20 KT.
WITHIN 60 NM NE...AND 90 NM SE QUADRANTS WINDS 40 TO 60 KT. SEAS
24 TO 32 FT. ELSEWHERE WITHIN 240 NM OF CENTER WINDS 25 TO 40 KT.
SEAS 12 TO 24 FT. ALSO FROM 30N TO 45N W OF 167E WINDS 20 TO 30
KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST POST-TROPICAL CYCLONE KUJIRA 41N172E 1000 MB.
WITHIN 120 NM NE...AND 180 NM S AND SW QUADRANTS WINDS 25 TO 40
KT. SEAS 11 TO 21 FT. ELSEWHERE FROM 35N TO 50N BETWEEN 179E AND
163E WINDS 20 TO 30 KT. SEAS 8 TO 15 FT IN MIXED SWELL.
.48 HOUR FORECAST POST-TROPICAL CYCLONE KUJIRA 36N178W 1004 MB.
FROM 30N TO 46N BETWEEN 173W AND 171E WINDS 20 TO 30 KT. SEAS 8
TO 14 FT IN MIXED SWELL.

...STORM WARNING...
.LOW 41N171W 992 MB MOVING E 30 KT. WITHIN 120 NM NE...360 NM
SE...420 NM SW...AND 480 NM W QUADRANTS WINDS 30 TO 45 KT. SEAS
10 TO 20 FT. ELSEWHERE FROM 34N TO 45N BETWEEN 169W AND 167E
WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.
.12 HOUR FORECAST LOW 40N162W 983 MB. WITHIN 300 NM SE...360 NM S
AND SW...AND 300 NM W QUADRANTS WINDS 35 TO 50 KT. SEAS 12 TO 23
FT.
.24 HOUR FORECAST LOW 42N156W 979 MB. BETWEEN 90 NM AND 240 NM
NE...BETWEEN 120 NM AND 420 NM SE...BETWEEN 300 NM AND 660 NM
S...AND WITHIN 180 NM W QUADRANTS WINDS 35 TO 50 KT. SEAS 14 TO
26 FT. ELSEWHERE FROM 30N TO 47N BETWEEN 134W AND 179E WINDS 25
TO 35 KT. SEAS 8 TO 22 FT...HIGHEST WITHIN 1020 NM SW QUADRANT IN
NW SWELL.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 52N156W 973 MB AND
SECOND CENTER 49N151W 971 MB. WITHIN 180 NM SE QUADRANT OF SECOND
CENTER...AND WITHIN 540 NM NE QUADRANT OF MAIN CENTER WINDS 40 TO
55 KT. SEAS 15 TO 32 FT...HIGHEST SE QUADRANT OF SECOND CENTER.
ELSEWHERE FROM 42N TO 59N BETWEEN 136W AND 163W WINDS 25 TO 40
KT. SEAS 10 TO 24 FT...HIGHEST WITHIN 300 NM E AND SE QUADRANT OF
SECOND CENTER. ALSO...EXCEPT WHERE DESCRIBED PREVIOUSLY...FROM
30N TO 60N BETWEEN 123W AND 173W WINDS 20 TO 30 KT. SEAS 8 TO 19
FT...HIGHEST WITHIN 1080 NM S QUADRANT OF SECOND CENTER IN NW
SWELL.

.SYNOPSIS AND FORECAST.

.LOW 50N168E 1015 MB MOVING N 10 KT. FROM 45N TO 56N W OF 180W
WINDS LESS THAN 25 KT. SEAS TO 11 FT IN MIXED SWELL.
.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.24 HOUR FORECAST FROM 32N TO 39N E OF 124W AREA OF NW WINDS TO
25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST FROM 35N TO 50N BETWEEN 121W AND 123W AREA OF N
TO NW WINDS TO 25 KT. SEAS TO 9 FT.

.24 HOUR FORECAST LOW W OF AREA NEAR 43N153E 996 MB. FROM 34N TO
50N W OF 163E WINDS 20 TO 30 KT. SEAS TO 11 FT.
.48 HOUR FORECAST LOW 46N163E 1002 MB. FROM 35N TO 49N W OF 171E
WINDS 20 TO 30 KT. SEAS TO 11 FT.

.HIGH 35N124W 1018 MB MOVING NW 10 KT.
.24 HOUR FORECAST HIGH 37N127W 1020 MB.
.48 HOUR FORECAST HIGH 39N131W 1019 MB.

.HIGH 32N173E 1021 MB MOVING W 10 KT.
.24 HOUR FORECAST HIGH 32N169E 1020 MB.
.48 HOUR FORECAST LITTLE CHANGE.

.HIGH 54N175E 1022 MB MOVING S 25 KT.
.24 HOUR FORECAST HIGH 46N180W 1018 MB.
.48 HOUR FORECAST HIGH 43N177W 1019 MB.

.24 HOUR FORECAST NEW HIGH 46N127W 1022 MB.
.48 HOUR FORECAST HIGH 47N130W 1020 MB.

.24 HOUR FORECAST NEW HIGH 46N135W 1019 MB.
.48 HOUR FORECAST HIGH ABSORBED BY HIGH 47N130W.

.FORECASTER FOLMER. 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 0000 UTC WED SEP 30.
24 HOUR FORECAST VALID 0000 UTC THU OCT  1.
48 HOUR FORECAST VALID 0000 UTC FRI OCT  2.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM MARIE NEAR 13.8N 110.4W 1003 MB AT 0300 UTC SEP
30 MOVING W OR 275 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 40 KT
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 20 NM OF CENTER. 
SEAS 12 FT OR GREATER WITHIN 0 NM N SEMICIRCLE...120 NM SE 
QUADRANT AND 240 NM SW QUADRANT WITH SEAS TO 14 FT. ELSEWHERE 
WITHIN 10N109W TO 10N113W TO 12N110W TO 14N111W TO 14N108W TO 
10N109W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER AREA 
WITHIN 10N97W TO 05N111W TO 09N119W TO 15N120W TO 18N104W TO 
10N97W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM MARIE NEAR 14.6N 115.9W. 
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE 
WINDS WITHIN 60 NM OF CENTER EXCEPT 50 NM SW QUADRANT. SEAS 12 
FT OR GREATER WITHIN 150 NM E AND 30 NM W SEMICIRCLES WITH SEAS 
TO 24 FT. ELSEWHERE WITHIN 13N111W TO 09N114W TO 16N120W TO 
18N117W TO 17N114W TO 13N111W WINDS 20 TO 33 KT. SEAS 10 TO 12 
FT. REMAINDER AREA WITHIN 13N106W TO 06N114W TO 08N121W TO 
18N120W TO 20N108W TO 13N106W WINDS 20 KT. SEAS 8 TO 10 FT IN 
MIXED SWELL. 
.36 HOUR FORECAST HURRICANE MARIE NEAR 15.0N 118.8W. MAXIMUM 
SUSTAINED WINDS 75 KT GUSTS 90 KT.
.48 HOUR FORECAST HURRICANE MARIE NEAR 15.5N 121.4W. MAXIMUM 
SUSTAINED WINDS 90 KT GUSTS 110 KT. TROPICAL STORM FORCE WINDS 
WITHIN 110 NM NE QUADRANT...100 NM SE QUADRANT...80 NM SW 
QUADRANT...AND 90 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
210 NM SE AND 90 NM NW SEMICIRCLES WITH SEAS TO 32 FT. ELSEWHERE 
WITHIN 10N119W TO 12N123W TO 16N126W TO 19N123W TO 16N118W TO 
10N119W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER AREA 
WITHIN 13N110W TO 06N116W TO 08N122W TO 18N127W TO 22N114W TO 
13N110W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL. 
.72 HOUR FORECAST HURRICANE MARIE NEAR 17.6N 125.9W. MAXIMUM 
SUSTAINED WINDS 100 KT GUSTS 120 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE MARIE NEAR 19.8N 129.3W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 KT.
.120 HOUR FORECAST TROPICAL STORM MARIE NEAR 21.4N 132.1W. 
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

...GALE WARNING...
.WITHIN 15N94.5W TO 15N95.5W TO 16N95W TO 16N94.5W TO 15.5N94.5W
TO 15N94.5W...INCLUDING THE GULF OF TEHUANTEPEC... N WINDS 30 TO
40 KT. SEAS 9 TO 14 FT. ELSEWHERE WITHIN 14N94W TO 14N96W TO 
16N96W TO 16N95W TO 16N93W TO 14N94W N WINDS 20 TO 30 KT. SEAS 8
TO 10 FT. 
.24 HOUR FORECAST WITHIN 14N95W TO 15N96W TO 16N95W TO 
14N95W...INCLUDING THE GULF OF TEHUANTEPEC... N WINDS 30 TO 40 
KT. SEAS 10 TO 15 FT. ELSEWHERE WITHIN 12N96W TO 11N97W TO 15N96W
TO 16N95W TO 14N94W TO 12N96W N TO NE WINDS 20 TO 30 KT. SEAS 10
TO 13 FT. REMAINDER AREA WITHIN 13N93W TO 11N97W TO 13N98W TO 
15N96W TO 16N94W TO 13N93W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT
IN N TO NE SWELL.
.48 HOUR FORECAST WITHIN 15N94.5W TO 14.5N95W TO 14.5N95.5W TO 
15.5N95.5W TO 16N95W TO 15N94.5W...INCLUDING THE GULF OF 
TEHUANTEPEC... N WINDS 30 TO 35 KT. SEAS 9 TO 14 FT. ELSEWHERE 
WITHIN 14N95W TO 13N96W TO 14N96W TO 16N95W TO 15N94W TO 14N95W N
TO NE WINDS 20 TO 30 KT. SEAS 9 TO 12 FT. REMAINDER AREA WITHIN 
09N98W TO 11N101W TO 15N96W TO 15N94W TO 12N95W TO 09N98W WINDS
20 KT OR LESS. SEAS 8 TO 10 FT IN N TO NE SWELL. 

.SYNOPSIS AND FORECAST.

.WITHIN 03S80W TO 01S89W TO 03.4S120W TO 08N95W TO 05N77W TO
03S80W...INCLUDING THE GULF OF PANAMA... WINDS 20 KT OR LESS.
SEAS 8 FT IN SW SWELL.
.24 HOUR FORECAST WITHIN 03.4S93W TO 03.4S120W TO 00N106W TO 
06N96W TO 05N93W TO 03.4S93W WINDS 20 KT OR LESS. SEAS 8 FT IN SW
SWELL.
.48 HOUR FORECAST WITHIN 04N94W TO 03N98W TO 06N100W TO 08N96W 
TO 06N91W TO 04N94W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN SW
SWELL.

.24 HOUR FORECAST WITHIN 29N139W TO 28N140W TO 30N140W TO
30N139W TO 29N139W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW
SWELL.
.48 HOUR FORECAST WITHIN 27N134W TO 22N140W TO 30N140W TO 
30N131W TO 27N134W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW 
SWELL.

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

CONVECTION VALID AT 0300 UTC WED SEP 30...

T.S. MARIE...NUMEROUS MODERATE SCATTERED STRONG WITHIN 90 NM W 
AND 60 NM E SEMICIRCLES. SCATTERED MODERATE ISOLATED STRONG 
FROM 09N TO 17N BETWEEN 108W AND 118W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N85W TO 13N100W. IT RESUMES FROM 13N115W 
TO 09N140W. SCATTERED MODERATE FROM 05N TO 11N BETWEEN 86W AND 
95W. SCATTERED MODERATE ISOLATED STRONG FROM 07N TO 13N BETWEEN 
100W AND 105W. SCATTERED MODERATE FROM 08N TO 11N BETWEEN 129W 
AND 140W.



.FORECASTER AL. NATIONAL HURRICANE CENTER.

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

SYNOPSIS VALID 0000 UTC SEP 30 2020.
24 HOUR FORECAST VALID 0000 UTC OCT 01 2020.
48 HOUR FORECAST VALID 0000 UTC OCT 02 2020.

.WARNINGS. 

.NONE. 

.SYNOPSIS AND FORECAST. 

.LOW 13N149W 1008 MB. TROUGH FROM LOW TO 20N151W TO 24N151W. LOW 
AND TROUGH MOVING W 10 KT. ISOLATED MODERATE TSTMS WITHIN 180 NM 
OF LOW AND TROUGH S OF 18N. 
.24 HOUR FORECAST LOW 13N152W 1009 MB. TROUGH FROM LOW TO 
24N155W. 
.48 HOUR FORECAST LOW DISSIPATED. TROUGH FROM 14N155W TO 20N155W 
TO 23N155W. 

.FRONT FROM 30N150W TO 27N160W TO 26N170W TO 24N176E MOVING ESE 
10 KT E OF 168W...AND NEARLY STATIONARY ELSEWHERE. 
.24 HOUR FORECAST DISSIPATING FRONT FROM 30N152W TO 27N170W TO 
25N180W. 
.48 HOUR FORECAST FRONT DISSIPATED. 

.TROUGH FROM 16N165E TO 09N169E MOVING W 10 KT. E WINDS 20 TO 25 
KT FROM 14N TO 20N BETWEEN W OF 170E. SCATTERED MODERATE TO 
STRONG TSTMS FROM 15N TO 20N W OF 170E. SCATTERED MODERATE TSTMS 
FROM 03N TO 10N W OF 170E. 
.24 HOUR FORECAST TROUGH FROM 18N160E TO 10N165E. WINDS 
DIMINISHED TO 20 KT OR LESS. 
.48 HOUR FORECAST TROUGH MOVED W OF FORECAST AREA. 

.24 HOUR FORECAST NEW FRONT FROM 30N152W TO 29N170W TO 30N180E. 
.48 HOUR FORECAST FRONT FROM 30N150W TO 27N160W TO 27N170W. 

.RIDGE FROM 29N140W TO 27N150W TO 25N160W TO 25N171W MOVING S 
SLOWLY. 

.WINDS 20 KT OR LESS REST OF FORECAST AREA. 

.SEAS 8 TO 10 FT N OF 26N BETWEEN 150W AND 177W. 
.24 HOUR FORECAST SEAS 8 TO 10 FT N OF 24N E OF 170W. 
.48 HOUR FORECAST SEAS 8 TO 12 FT N OF 24N E OF 172W. 

.SEAS 8 FT OR LESS REST OF FORECAST AREA. 

.SCATTERED MODERATE TSTMS FROM 05N TO 10N BETWEEN 170W AND 176W. 

.ITCZ FROM 10N140W TO 10N146W...AND FROM 10N153W TO 10N173E. 
SCATTERED MODERATE TSTMS FROM 05N TO 10N BETWEEN 180E AND 170E. 

$$ 

.FORECASTER MORRISON. HONOLULU HI.