HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1145 UTC FRI SEP 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).
SECURITE
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 0600 UTC SEP 18.
24 HOUR FORECAST VALID 0600 UTC SEP 19.
48 HOUR FORECAST VALID 0600 UTC SEP 20.
.WARNINGS.
...GALE WARNING...
.COMPLEX LOW WITH MAIN CENTER 54N147W 1008 MB MOVING NE 15 KT.
WITHIN 360 NM E AND SE OF A LINE FROM LOW CENTER TO 44N156W
WINDS 20 TO 30 KT. SEAS TO 3 M.
.12 HOUR FORECAST LOW 58N146W 997 MB. WITHIN 240 NM E AND NE
QUADRANTS...AND 180 NM S SEMICIRCLE WINDS 25 TO 40 KT. SEAS
2.5 TO 4 M.
.24 HOUR FORECAST LOW 60N146W 996 MB. WITHIN 90 NM S AND SE
SEMICIRCLES WINDS 25 TO 35 KT. SEAS 3 TO 5 M. ELSEWHERE N OF
48N BETWEEN 134W AND 147W WINDS TO 25 KT. SEAS TO 3.5 M.
.48 HOUR FORECAST LOW DISSIPATED WITH CONDITIONS DESCRIBED
WITH LOW 55N148W BELOW.
...GALE WARNING...
.COMPLEX LOW WITH MAIN CENTER W OF AREA NEAR 54N177E 1009 MB
MOVING SE 25 KT WILL TURN E AFTER 12 HOURS...AND A SECONDARY
CENTER 48N177W 1018 MB MOVING NE 20 KT. WITHIN 420 NM S AND SW
QUADRANTS OF MAIN CENTER WINDS 25 TO 35 KT. SEAS 3 TO 4.5 M.
ELSEWHERE WITHIN 300 NM SW QUADRANT OF SECONDARY CENTER...AND
WITHIN 600 NM SW AND 480 NM N AND NW QUADRANTS OF MAIN CENTER
WINDS TO 25 KT. SEAS TO 3.5 M.
.24 HOUR FORECAST COMBINED LOW 52N156W 990 MB. WITHIN 600 NM W
AND SW QUADRANTS WINDS 25 TO 35 KT. SEAS 3 TO 5 M. ELSEWHERE N
OF 53N BETWEEN 163W AND 179W...AND FROM 41N TO 53N W OF 148W
WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST LOW 55N147W 978 MB. WITHIN 360 NM S AND SE
SEMICIRCLES WINDS 25 TO 35 KT. SEAS 4 TO 6 M. ELSEWHERE N AND
NW OF A LINE FROM 52N130W TO 44N152W TO 43N167W TO 46N180W
WINDS 20 TO 30 KT. SEAS 2.5 TO 5 M.
.SYNOPSIS AND FORECAST.
.LOW 60N168W 1004 MB MOVING E 15 KT. W AND NW OF A LINE FROM
59N175W TO 65N166W N TO NE WINDS TO 25 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW MOVED INLAND OVER ALASKA WITH CONDITIONS
DESCRIBED WITH LOW 52N156W IN WARNINGS SECTION ABOVE.
.FROM 46N TO 51N BETWEEN 125W AND 131W WINDS TO 25 KT. SEAS
TO 2.5 M.
.24 HOUR FORECAST CONDITIONS DIMINISHED.
.24 HOUR FORECAST FROM 32N TO 41N BETWEEN 117W AND 126W N TO
NW WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST FROM 31N TO 42N BETWEEN 119W AND 126W N TO
NW WINDS TO 25 KT. SEAS TO 3 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 57N TO 64N
BETWEEN 166 AND 174W...AND WITHIN 60 NM OF THE W COAST OF THE
UNITED STATES FROM 37N TO 47N.
.24 HOUR FORECAST DENSE FOG N OF 59N E OF 151W...AND N OF 64N
W OF ALASKA.
.48 HOUR FORECAST DENSE FOG N OF 59N E OF 150W...AND N OF 58N
BETWEEN 162W AND 171W.
.FORECASTER MILLS. 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 0600 UTC FRI SEP 18.
24 HOUR FORECAST VALID 0600 UTC SAT SEP 19.
48 HOUR FORECAST VALID 0600 UTC SUN SEP 20.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.WITHIN 21N128W TO 22N140W TO 14N140W TO 16N131W TO 19N128W TO
21N128W NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST WITHIN 21N138W TO 22N138W TO 23N140W TO
17N140W TO 18N139W TO 20N139W TO 21N138W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN E SWELL.
.30 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.WITHIN 16N94W TO 16N95W TO 15N97W TO 13N97W TO 14N95W TO 15N94W
TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20
TO 30 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST WITHIN 15N94W TO 16N94W TO 16N95W TO 16N96W
TO 14N96W TO 14N95W TO 15N94W...INCLUDING THE GULF OF
TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.36 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.WITHIN 12N86W TO 12N88W TO 11N89W TO 10N89W TO 09N87W TO 10N86W
TO 12N86W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO
25 KT. SEAS LESS THAN 2.5 M.
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.03 HOUR FORECAST WITHIN 17N100W TO 18N102W TO 18N103W TO
17N104W TO 16N102W TO 16N101W TO 17N100W N TO NE WINDS 20 TO 30
KT. SEAS LESS THAN 2.5 M.
.15 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.15 HOUR FORECAST WITHIN 17N126W TO 17N128W TO 16N129W TO
15N129W TO 15N127W TO 17N126W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN E TO SE SWELL.
.24 HOUR FORECAST WITHIN 20N131W TO 21N134W TO 19N135W TO
19N134W TO 19N132W TO 20N131W E WINDS 20 TO 25 KT. SEAS 2.5 TO
3.0 M.
.48 HOUR FORECAST WITHIN 22N135W TO 23N138W TO 22N140W TO
20N140W TO 19N136W TO 19N134W TO 22N135W NE TO E WINDS 20 TO 25
KT. SEAS 2.5 TO 3.0 M. WITHIN 17N130W TO 18N131W TO 18N135W TO
17N136W TO 16N134W TO 15N130W TO 17N130W E WINDS 20 TO 25 KT.
SEAS 2.5 TO 3.0 M.
.15 HOUR FORECAST WITHIN 28N115W TO 29N114W TO 29N116W TO
28N116W TO 26N114W TO 27N114W TO 28N115W...INCLUDING SEBASTIAN
VIZCAINO BAY AND WITHIN 60 NM OF SHORE...NW WINDS 20 TO 25 KT.
SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST WITHIN 29N114W TO 30N116W TO 29N116W TO
26N116W TO 26N115W TO 26N114W TO 29N114W...INCLUDING SEBASTIAN
VIZCAINO BAY AND WITHIN 60 NM OF SHORE...NW TO N WINDS 20 TO 25
KT. SEAS LESS THAN 2.5 M.
.30 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.42 HOUR FORECAST WITHIN 10N107W TO 11N108W TO 10N109W TO
08N109W TO 07N108W TO 08N106W TO 10N107W S TO SW WINDS 20 TO 25
KT. SEAS 2.5 TO 3.0 M.
.48 HOUR FORECAST WITHIN 10N105W TO 11N106W TO 12N107W TO
10N110W TO 08N110W TO 08N106W TO 10N105W S TO SW WINDS 20 TO 25
KT. SEAS 2.5 TO 3.0 M.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 0920 UTC FRI SEP 18...
.TROPICAL WAVE NEAR 117W WITH 1009 MB LOW PRESSURE (INVEST
EP98)...SCATTERED MODERATE TO STRONG FROM 08N TO 17N BETWEEN
112W AND 124W.
.TROPICAL WAVE WITH AXIS NEAR 101W...SCATTERED MODERATE TO
ISOLATED STRONG FROM 04N TO 19N BETWEEN 90W AND 110W.
.REMNANT LOW OF TROPICAL DEPRESSION FIFTEEN-E...SCATTERED
MODERATE ISOLATED STRONG FROM 07N TO 21N BETWEEN 124W AND 140W.
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH AXIS EXTENDS FROM 09N84W TO 06N1O6W TO
15N128W. SCATTERED MODERATE TO STRONG IS FROM 02N TO 08N BETWEEN
77W AND 91W.
$$
.FORECASTER RAMOS. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 0600 UTC SEP 18 2026.
24 HOUR FORECAST VALID 0600 UTC SEP 19 2026.
48 HOUR FORECAST VALID 0600 UTC SEP 20 2026.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.TROUGH FROM 30N148W 25N152W 18N159W MOVING W 10 KT. ISOLATED
MODERATE TSTMS WITHIN 180 NM OF TROUGH S OF 25N.
.24 HOUR FORECAST TROUGH DISSIPATED.
.LOW NEAR 12N158W 1008 MB MOVING W SLOWLY. SCATTERED MODERATE
TSTMS WITHIN 240 NM N SEMICIRCLE OF LOW.
.24 HOUR FORECAST LOW NEAR 11N162W 1011 MB.
.48 HOUR FORECAST DISSIPATING LOW NEAR 12N162W.
.24 HOUR FORECAST NEW LOW 15N140W 1011 MB.
.48 HOUR FORECAST LOW 15N142W 1010MB. TROUGH FROM LOW TO 25N141W.
.E TO NE WINDS 20 TO 25 KT FROM 14N TO 25N E OF 150W AND N OF 20N
W OF 160W.
.24 HOUR FORECAST E WINDS 20 TO 25 KT FROM 16N TO 26N.
.48 HOUR FORECAST E WINDS 20 TO 25 KT FROM 15N TO 25N E OF 162W.
.SEAS 2.5 TO 3 M FROM 15N TO 26N E OF 155W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M FROM 13N TO 25N E OF
160W...AND FROM 20N TO 29N BETWEEN 163W AND 180W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M FROM 14N TO 24N BETWEEN 165W AND
142W.
.OTHERWISE...WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER OVER THE
REMAINDER OF FORECAST AREA.
.MONSOON TROUGH 10N140W 12N158W 08N166W 06N180W. ISOLATED
MODERATE TSTMS WITHIN 180 NM N OF TROUGH E OF 172W...AND FROM 09N
TO 15N E OF 153W.
$$
.FORECASTER EE. HONOLULU HI.=