HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1145 UTC WED AUG 12 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 AUG 12.
24 HOUR FORECAST VALID 0600 UTC AUG 13.
48 HOUR FORECAST VALID 0600 UTC AUG 14.
.WARNINGS.
...GALE WARNING...
.FROM 33N TO 45N BETWEEN 122W AND 132W WINDS 20 TO 30 KT. SEAS
TO 3 M.
.12 HOUR FORECAST FROM 38N TO 42N BETWEEN 123W AND 127W AREA OF
N TO NW WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST FROM 32N TO 55N BETWEEN 123W AND 132W AREA OF
N TO NW WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST FROM 38N TO 51N BETWEEN 123W AND 130W AREA OF
N TO NW WINDS TO 25 KT. SEAS 2.5 TO 4 M.
...GALE WARNING...
.24 HOUR FORECAST LOW W OF AREA. S OF 37N W OF 178W AREA OF SW
WINDS TO 25 KT. SEAS TO 2.5 M.
.30 HOUR FORECAST LOW W OF AREA. S OF 38N W OF 175W AREA OF SW
WINDS 25 TO 35 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW 40N178W 1001 MB. S OF 44N W OF 170W WINDS
25 TO 35 KT. SEAS 2.5 TO 4 M.
.SYNOPSIS AND FORECAST.
.LOW 55N180W 999 MB MOVING SE 15 KT. WITHIN 240 NM NE...480 NM
SE...360 NM SW...AND 180 NM NW QUADRANTS WINDS 20 TO 30 KT. SEAS
TO 3 M.
.24 HOUR FORECAST LOW 54N173W 1000 MB. WITHIN 240 NM SW
SEMICIRCLE WINDS 20 TO 30 KT. SEAS TO 3.5 M.
.48 HOUR FORECAST LOW 56N175W 1004 MB. CONDITIONS DIMINISHED.
.LOW 44N162W 1001 MB MOVING NE 10 KT. FROM 35N TO 50N BETWEEN
148W AND 168W WINDS 20 TO 30 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 48N158W 1004 MB. FROM 40N TO 60N BETWEEN
145W AND 165W WINDS 20 TO 30 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW 53N160W 1008 MB. FROM 57N TO 60N BETWEEN
150W AND 165W WINDS TO 25 KT. SEAS TO 3 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 36N TO 48N E
OF 126W...FROM 43N TO 52N BETWEEN 131 AND 158W...AND FROM 50N TO
54N W OF 178W.
.24 HOUR FORECAST DENSE FOG FROM 44N TO 56N BETWEEN 135W AND
164W AND FROM 50N TO 54N W OF 179E.
.48 HOUR FORECAST DENSE FOG FROM 43N TO 53N BETWEEN 137W AND
149W AND FROM 53N TO 58N BETWEEN 143W AND 158W.
.FORECASTER KREKELER. 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 WED AUG 12.
24 HOUR FORECAST VALID 0600 UTC THU AUG 13.
48 HOUR FORECAST VALID 0600 UTC FRI AUG 14.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.WITHIN 15N135W TO 18N137W TO 19N140W TO 08N140W TO 11N136W TO
15N135W SE TO S WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M IN SE TO S
SWELL.
.24 HOUR FORECAST WITHIN 19N136W TO 22N140W TO 09N140W TO
10N138W TO 14N136W TO 19N136W E TO SE WINDS 20 TO 30 KT. SEAS
2.5 TO 4.5 M IN S TO SW SWELL.
.48 HOUR FORECAST WITHIN 22N137W TO 24N140W TO 12N140W TO
13N137W TO 16N136W TO 22N137W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN S TO SW SWELL.
.WITHIN 16N94W TO 16N96W TO 15N96W TO 13N96W TO 13N95W TO 14N94W
TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC... N WINDS 20 TO
30 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS LESS THAN 20 KT.
SEAS LESS THAN 2.5 M.
.WITHIN 11N86W TO 12N88W TO 10N90W TO 10N89W TO 10N88W TO
11N86W...INCLUDING THE GULF OF PAPAGAYO... NE TO E WINDS 20 TO
25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.
.WITHIN 00N117W TO 01N121W TO 02N128W TO 00N135W TO 03.4S120W TO
03.4S115W TO 00N117W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S
TO SW SWELL.
.24 HOUR FORECAST WITHIN 02N112W TO 02N116W TO 00N130W TO
02S120W TO 03.4S120W TO 03.4S106W TO 02N112W WINDS 20 KT OR
LESS. SEAS 2.5 TO 3.0 M IN S TO SW SWELL.
.48 HOUR FORECAST WITHIN 01S101W TO 02N109W TO 02N118W TO
00N125W TO 03.4S120W TO 03S99W TO 01S101W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN S TO SW SWELL.
.24 HOUR FORECAST WITHIN 20N130W TO 21N133W TO 20N135W TO
18N135W TO 18N133W TO 18N131W TO 20N130W NE TO E WINDS 20 TO 30
KT. SEAS 2.5 TO 3.0 M.
.48 HOUR FORECAST WITHIN 21N131W TO 23N133W TO 21N136W TO
19N137W TO 18N134W TO 20N131W TO 21N131W NE 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 0830 UTC WED AUG 12...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N78W TO 07N113W...AND FROM 1010 MB LOW
PRESSURE NEAR 17N130W TO BEYOND 14N140W. SCATTERED MODERATE
CONVECTION IS FROM 04N TO 08N E OF 100W...FROM 09N TO 13N
BETWEEN 100W AND 115W...FROM 08N TO 14N BETWEEN 100W AND
110W...AND FROM 10N TO 18N BETWEEN 130W AND 140W.
$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 0600 UTC AUG 12 2026.
24 HOUR FORECAST VALID 0600 UTC AUG 13 2026.
48 HOUR FORECAST VALID 0600 UTC AUG 14 2026.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST
.LOW 15N140W 1004 MB MOVING W 10 KT. WINDS 20 TO 30 KT AND SEAS
2.5 TO 4 M FROM 08N TO 20N E OF 145W.
.24 HOUR FORECAST LOW 15N143W 1000 MB. WINDS 20 TO 30 KT FROM
10N TO 22N E OF 140W. SEAS 4 TO 5 M WITHIN 180 NM OF N SEMICIRCLE.
SEAS 2.5 TO 4 M ELSEWHERE FROM 10N TO 22N E OF 140W. POSSIBLE
TROPICAL CYCLONE.
.48 HOUR FORECAST LOW 16N147W 998 MB. WINDS 20 TO 30 KT FROM
15N TO 25N BETWEEN 153W AND 143W. SEAS 4 TO 5.5 M WITHIN 210 NM
OF LOW. SEAS 2.5 TO 4 M ELSEWHERE WITHIN 600 NM OF LOW. POSSIBLE
TROPICAL CYCLONE.
.LOW 10N165W 1010 MB MOVING W 5 KT.
.24 HOUR FORECAST LOW DISSIPATED.
.WINDS 20 KT OR LESS OVER THE REMAINDER OF FORECAST AREA.
.SEAS 2.5 M OR LOWER OVER THE REMAINDER OF FORECAST AREA.
.MONSOON TROUGH 06N180W 08N165W 07N155W 10N143W 12N140W. NUMEROUS
STRONG TSTMS WITHIN 240 NM OF LINE 07N147W 12N142W. SCATTERED
MODERATE TSTMS ELSEWHERE WITHIN 150 NM OF TROUGH E OF 165W.
$$
.FORECASTER PECHACEK. HONOLULU HI.=