HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1745 UTC TUE OCT 20 2026
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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).
FOR ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE
THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM).
PACIFIC S OF 67N AND N OF 30N E OF A LINE FROM THE BERING STRAIT
TO 53N172E TO 50N180W TO 30N180W
ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS
SYNOPSIS VALID 1200 UTC OCT 20.
24 HOUR FORECAST VALID 1200 UTC OCT 21.
48 HOUR FORECAST VALID 1200 UTC OCT 22.
.WARNINGS.
...STORM WARNING...
.LOW 60N146W 977 MB WILL REMAIN NEARLY STATIONARY THEN MOVE SE
15 KT AFTER 24 HOURS. FRONT FROM 60N144W TO 59N140W TO 58N137W.
E AND NE OF FRONT WINDS 35 TO 50 KT. SEAS 4 TO 7 M. ELSEWHERE N
OF A LINE FROM 47N155W TO 47N140W TO 54N133W WINDS 25 TO 40 KT.
SEAS 2.5 TO 5.5 M.
.24 HOUR FORECAST LOW NEAR 60N147W 996 MB. WITHIN 420 NM S AND
360 NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 5.5 M.
.48 HOUR FORECAST LOW 58N143W 1006 MB. WITHIN 360 NM S...AND 420
NM W AND SW QUADRANTS WINDS 20 TO 30 KT. SEAS TO 3.5 M.
...GALE WARNING...
.LOW 38N131W 1006 MB MOVING SE 20 KT. WITHIN 300 NM W AND
NW...AND 240 NM SW QUADRANTS WINDS 25 TO 40 KT. SEAS 3.5 TO 6.5
M.
.24 HOUR FORECAST LOW 31N127W 1007 MB. FROM 30N TO 39N BETWEEN
126W AND 139W WINDS TO 25 KT. SEAS 2.5 TO 5 M.
.48 HOUR FORECAST LOW 32N120W 1010 MB. FROM 30N TO 37N BETWEEN
122W AND 132W WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
...GALE WARNING...
.24 HOUR FORECAST LOW 47N176W 1009 MB. WITHIN 240 NM W AND SW
QUADRANTS WINDS WINDS 25 TO 35 KT. SEAS TO 3.5 M.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN LOW 44N165W 1004 MB.
WITHIN 360 NM SW AND 420 NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS
3 TO 6.5 M.
.SYNOPSIS AND FORECAST.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 56N BETWEEN
133W AND 146W...AND FROM 57N TO 61N BETWEEN 160W AND 168W.
.24 HOUR FORECAST CONDITIONS IMPROVED.
.FORECASTER ROWLAND. 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 1200 UTC TUE OCT 20.
24 HOUR FORECAST VALID 1200 UTC WED OCT 21.
48 HOUR FORECAST VALID 1200 UTC THU OCT 22.
.WARNINGS.
...GALE WARNING...
.WITHIN 14N95W TO 15N94W TO 16N95W TO 15N96W TO 12N98W TO 12N96W
TO 14N95W...INCLUDING THE GULF OF TEHUANTEPEC...NE WINDS 25 TO
35 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE...WITHIN 15N94W TO 16N95W TO
12N99W TO 11N96W TO 12N94W TO 15N94W NE WINDS 20 TO 30 KT. SEAS
2.5 TO 3.0 M.
.24 HOUR FORECAST WITHIN 16N95W TO 15N97W TO 13N99W TO 12N100W
TO 11N97W TO 13N95W TO 16N95W...INCLUDING THE GULF OF
TEHUANTEPEC...NE TO E WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M.
.48 HOUR FORECAST WITHIN 15N95W TO 16N95W TO 15N97W TO 14N100W
TO 13N102W TO 11N96W TO 15N95W...INCLUDING THE GULF OF
TEHUANTEPEC...E WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M.
.SYNOPSIS AND FORECAST.
.NEW LOW PRES NEAR 10N95W 1007 MB. WITHIN 11N97W TO 11N99W TO
10N99W TO 10N98W TO 11N97W NE WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0
M. ELSEWHERE...WITHIN 11N98W TO 11N100W TO 09N102W TO 06N101W
TO 04N95W TO 06N93W TO 11N98W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN N TO NE SWELL.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
10N99W 1006 MB. WITHIN 11N98W TO 12N101W TO 11N102W TO 10N102W
TO 09N101W TO 10N99W TO 11N98W WINDS 20 TO 30 KT. SEAS 2.5 TO
3.5 M. ELSEWHERE...WITHIN 10N96W TO 12N101W TO 11N102W TO
09N103W TO 07N100W TO 09N97W TO 10N96W WINDS 20 KT OR LESS. SEAS
2.5 TO 3.0 M IN MIXED SWELL.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
10N101W 1003 MB. WITHIN 12N99W TO 13N103W TO 09N105W TO 07N101W
TO 07N99W TO 09N97W TO 12N99W WINDS 20 TO 30 KT. SEAS 3.5 TO 4.5
M. ELSEWHERE...WITHIN 10N96W TO 13N104W TO 10N105W TO 07N104W
TO 04N101W TO 06N96W TO 10N96W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.5 M IN MIXED SWELL.
.06 HOUR FORECAST COLD FRONT FROM 30N127W TO 28N139W. WITHIN
30N130W TO 30N139W TO 29N136W TO 29N132W TO 30N130W WINDS 20 KT
OR LESS. SEAS 2.5 TO 3.0 M IN N SWELL.
.24 HOUR FORECAST COLD FRONT FROM 30N123W TO 24N139W. WITHIN
30N126W TO 30N139W TO 29N138W TO 27N133W TO 27N130W TO 28N126W TO
30N126W NW TO N WINDS 20 TO 25 KT. SEAS 3.5 TO 4.5 M.
ELSEWHERE...WITHIN 30N123W TO 30N140W TO 27N140W TO 26N132W TO
27N127W TO 30N123W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN N
SWELL.
.48 HOUR FORECAST COLD FRONT FROM 30N118W TO 22N126W. WITHIN
29N120W TO 29N140W TO 20N140W TO 19N132W TO 22N123W TO 29N120W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN N SWELL.
.39 HOUR FORECAST WITHIN 31N113W TO 31N114W TO 31N115W TO
30N115W TO 30N114W TO 31N113W...INCLUDING THE GULF OF
CALIFORNIA...S TO SW WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST CONDITIONS IMPROVE.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 1530 UTC TUE OCT 20...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N86W TO 10N95W TO 04N107W. ITCZ FROM
04N107W TO BEYOND 03N140W. SCATTERED MODERATE TO ISOLATED STRONG
FROM 00N TO 15N E OF 103W...AND S OF 08N AND W OF 125W.
$$
.FORECASTER KONARIK. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 1200 UTC OCT 20 2026.
24 HOUR FORECAST VALID 1200 UTC OCT 21 2026.
48 HOUR FORECAST VALID 1200 UTC OCT 22 2026.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.LOW NEAR 07N177W 1008 MB NEARLY STATIONARY. SCATTERED MODERATE
TSTMS FROM 06N TO 11N W OF 172W.
.24 HOUR FORECAST LOW NEAR 07N177W.
.48 HOUR FORECAST LOW NEAR 08N176W.
.FRONT NEAR 30N180W NEARLY STATIONARY.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH MOVED NW OF AREA.
.ENE WINDS 20 TO 25 KT FROM 12N TO 26N BETWEEN 148W AND 172W.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 12N TO 23N BETWEEN
151W AND 176W.
.48 HOUR FORECAST WINDS DECREASED TO 20 KT OR LESS.
.SEAS 2.5 M TO 3 M IN AREA BOUNDED BY 28N157W 15N142W 12N172W
18N180W 28N157W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M IN AREA BOUNDED BY 26N160W
14N145W 12N168W 17N180W 25N180W 26N160W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M FROM 29N TO 20N E OF 148W...AND
FROM 16N AND 23N W OF 170W.
.WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER OVER REMAINDER OF
FORECAST AREA.
.ITCZ 03N140W 07N160W. ISOLATED MODERATE TSTMS S OF 12N E OF 164W.
.MONSOON TROUGH FROM 05N168W TO 08N180W. SCATTERED MODERATE TSTMS
S OF 10N W OF 172W.
.ISOLATED MODERATE TSTMS FROM 17N TO 20N BETWEEN 160W AND 164W.
$$
.FORECASTER FOSTER. HONOLULU HI.=