HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0545 UTC WED OCT 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC OCT 21.
24 HOUR FORECAST VALID 0000 UTC OCT 22.
48 HOUR FORECAST VALID 0000 UTC OCT 23.
.WARNINGS.
...STORM WARNING...
.36 HOUR FORECAST LOW WELL W OF AREA. W OF A LINE FROM 50N180W
TO 58N176W WINDS 35 TO 50 KT. SEAS 3 TO 6 M.
.48 HOUR FORECAST LOW W OF AREA 52N168E 962 MB. WITHIN 420 NM SE
QUADRANT AND WITHIN 240 NM NE OF A LINE FROM 59N176E TO 48N176W
WINDS 35 TO 50 KT. SEAS 4 TO 8 M. ELSEWHERE W OF A LINE FROM
48N175W TO 58N172W TO 62N177W WINDS 25 TO 35 KT. SEAS 3 TO 6 M.
...GALE WARNING...
.LOW 61N148W 985 MB MOVING SE 10 KT. WITHIN 720 NM S QUADRANT
WINDS 25 TO 35 KT. SEAS 4 TO 7 M. ELSEWHERE N OF 43N BETWEEN
131W AND 167W WINDS TO 25 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST LOW 59N145W 998 MB. WITHIN 420 NM S AND SW
QUADRANTS WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M.
.48 HOUR FORECAST LOW 58N140W 1016 MB. WITHIN 360 NM S QUADRANT
WINDS TO 25 KT. SEAS TO 3 M.
...GALE WARNING...
.LOW 33N131W 1006 MB MOVING SE 15 KT. WITHIN 300 NM SW AND 420
NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS 3 TO 6 M.
.24 HOUR FORECAST LOW 30N124W 1009 MB. FROM 30N TO 36N BETWEEN
121W AND 144W WINDS TO 25 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.
...GALE WARNING...
.12 HOUR FORECAST LOW 48N175W 1009 MB. WITHIN 180 NM W
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST LOW 47N168W 1005 MB. WITHIN 180 NM SE...420 NM
SW AND 240 NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS 3 TO 5.5 M.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN LOW 45N154W 999 MB. FROM
34N TO 47N BETWEEN 143W AND 168W WINDS 25 TO 35 KT. SEAS 3 TO
5.5 M.
.SYNOPSIS AND FORECAST.
.24 HOUR FORECAST DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM
FROM 47N TO 50N BETWEEN 164W AND 169W.
.48 HOUR FORECAST DENSE FOG FROM 45N TO 59N BETWEEN 175W AND
177E.
.FORECASTER HYDE. 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 OCT 21.
24 HOUR FORECAST VALID 0000 UTC THU OCT 22.
48 HOUR FORECAST VALID 0000 UTC FRI OCT 23.
.WARNINGS.
...GALE WARNING...
.LOW PRESSURE NEAR 10N97W 1007 MB. WITHIN 11N96W TO 11N97W TO
11N98W TO 10N98W TO 10N97W TO 11N96W NE TO E WINDS 20 TO 25 KT.
SEAS 2.5 TO 3.0 M. ELSEWHERE WITHIN 13N96W TO 14N98W TO 12N101W
TO 10N102W TO 08N98W TO 10N95W TO 13N96W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN NE SWELL.
.18 HOUR FORECAST LOW PRESSURE...POSSIBLE TROPICAL CYCLONE...NEAR
09N97W 1006 MB. WITHIN 10N97W TO 11N99W TO 10N100W TO 09N100W
TO 08N98W TO 09N97W TO 10N97W NE TO E WINDS 25 TO 35 KT. SEAS
2.5 TO 3.0 M. ELSEWHERE WITHIN 10N96W TO 14N98W TO 14N100W TO
12N104W TO 08N103W TO 06N97W TO 10N96W N TO NE WINDS 20 TO 25 KT.
SEAS 2.5 TO 3.0 M IN E TO SE SWELL.
.24 HOUR FORECAST LOW PRESSURE...POSSIBLE TROPICAL CYCLONE...NEAR
10N99W 1005 MB. LITTLE CHANGE IN WINDS AND SEAS.
.48 HOUR FORECAST LOW PRESSURE...POSSIBLE TROPICAL CYCLONE...NEAR
10.5N101W 1004 MB. WITHIN 11N99W TO 12N100W TO 11N102W TO
10N102W TO 09N101W TO 10N99W TO 11N99W SE TO S WINDS 35 TO 45
KT. SEAS 3.5 TO 4.5 M. ELSEWHERE WITHIN 13N95W TO 16N99W TO
14N106W TO 10N106W TO 06N102W TO 08N96W TO 13N95W E TO SE WINDS
25 TO 35 KT. SEAS 2.5 TO 3.5 M.
...GALE WARNING...
.WITHIN 16N95W TO 15N95W TO 16N94W TO 16N95W...INCLUDING THE
GULF OF TEHUANTEPEC... N WINDS 25 TO 35 KT. SEAS LESS THAN 2.5
M. ELSEWHERE WITHIN 15N95W TO 16N96W TO 15N96W TO 14N96W TO
14N95W TO 15N95W...INCLUDING THE GULF OF TEHUANTEPEC... N TO NE
WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M IN NE SWELL.
.06 HOUR FORECAST LITTLE CHANGE EXCEPT WINDS BELOW GALE FORCE.
.24 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 15N97W TO 14N97W TO
14N96W TO 15N94W TO 16N94W...INCLUDING THE GULF OF
TEHUANTEPEC... NE WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M.
.48 HOUR FORECAST LITTLE CHANGE.
.SYNOPSIS AND FORECAST.
.COLD FRONT FROM 30N125W TO 26N130W TO 25N140W. WITHIN 29N130W
TO 30N140W TO 29N140W TO 28N135W TO 29N130W NW TO N WINDS 20 TO
25 KT. SEAS 2.5 TO 3.0 M IN S TO SW SWELL.
.24 HOUR FORECAST WITHIN 30N120W TO 30N140W TO 24N140W TO
23N131W TO 26N123W TO 30N120W WINDS 20 KT OR LESS. SEAS 2.5 TO
4.5 M IN N SWELL.
.48 HOUR FORECAST WITHIN 25N120W TO 23N140W TO 18N140W TO
16N135W TO 18N126W TO 20N121W TO 25N120W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN N SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 0300 UTC WED OCT 21...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 11N85W TO 1007 MB LOW PRESSURE NEAR 10N97W TO
06N105W. ITCZ FROM 05N105W TO 06N140W. SCATTERED MODERATE TO
ISOLATED STRONG FROM 05N TO 13N BETWEEN 95W AND 105W...AND FROM
05N TO 08N BETWEEN 130W AND 140W.
$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 0000 UTC OCT 21 2026.
24 HOUR FORECAST VALID 0000 UTC OCT 22 2026.
48 HOUR FORECAST VALID 0000 UTC OCT 23 2026.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.LOW NEAR 07N172W 1010 MB WITH TROUGH FROM LOW TO 13N169W...BOTH
MOVING W SLOWLY. ISOLATED MODERATE TSTMS E OF TROUGH FROM 10N TO
12N BETWEEN 157W AND 171W.
.24 HOUR FORECAST LOW NEAR 08N175W 1010 MB WITH TROUGH FROM LOW
TO 11N174W.
.48 HOUR FORECAST LOW NEAR 09N178W 1010 MB WITH TROUGH FROM LOW
TO 12N175W.
.STATIONARY FRONT 30N178W TO 29N180W. ISOLATED MODERATE TSTMS
WITHIN 50 NM NW OF THE FRONT.
.24 HOUR FORECAST FRONT WEAKENING AT SAME GENERAL LOCATION.
.48 HOUR FORECAST FRONT DISSIPATED.
.TROUGH 25N165W TO 28N164W TO 30N163W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH 27N170W TO 28N169W TO 30N167W.
.48 HOUR FORECAST TROUGH DISSIPATED.
.TROUGH 15N167W TO 18N167W TO 22N168W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH DISSIPATED.
.TROUGH 10N148W TO 14N148W TO 16N147W MOVING W SLOWLY. ISOLATED
MODERATE TSTMS FROM 13N TO 14N BETWEEN 143W AND 147W.
.24 HOUR FORECAST TROUGH 10N156W TO 12N155W TO 14N152W.
.48 HOUR FORECAST TROUGH 10N160W TO 14N154W TO 16N152W.
.ENE WINDS 20 TO 25 KT FROM 14N TO 26N BETWEEN 152W AND 163W.
.24 HOUR FORECAST E WINDS 20 TO 25 KT WITHIN 50 NM OF A LINE FROM
21N140W TO 23N145W TO 25N151W.
.48 HOUR FORECAST ENE WINDS 20 TO 25 KT FROM 21N TO 24N BETWEEN
171W AND 176W.
.SEAS 2.5 M TO 3 M FROM 12N TO 27N BETWEEN 143W AND 173W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M FROM 14N TO 23N W OF 145W...AND
N OF 24N AND E OF 146W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M FROM 13N TO 24N E OF 171W...AND
FROM 17N TO 24N E OF 148W.
.WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER OVER REMAINDER OF
FORECAST AREA.
.ITCZ 06N140W TO 06N147W. SCATTERED MODERATE TSTMS UP TO 165 NM
ALONG EITHER SIDE OF ITCZ.
.MONSOON TROUGH FROM 06N147W TO 03N160W TO LOW MENTIONED ABOVE TO
09N180W. ISOLATED MODERATE TSTMS NEAR TROUGH FROM 00N TO 08N W OF
147W.
.SCATTERED MODERATE TSTMS FROM 10N TO 12N W OF 176W.
$$
.FORECASTER CHAN. HONOLULU HI.=