HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0545 UTC SUN AUG 09 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC AUG 09.
24 HOUR FORECAST VALID 0000 UTC AUG 10.
48 HOUR FORECAST VALID 0000 UTC AUG 11.
.WARNINGS.
...GALE WARNING...
.FROM 36N TO 50N BETWEEN 123W AND 130W WINDS 20 TO 30 KT. SEAS TO
3 M.
.24 HOUR FORECAST FROM 33N TO 50N BETWEEN 122W AND 131W WINDS 20
TO 30 KT. SEAS 2.5 TO 3.5 M.
.30 HOUR FORECAST FROM 38N TO 42N BETWEEN 123W AND 127 WINDS 25
TO 35 KT. SEAS 2.5 TO 3.5 M.
.48 HOUR FORECAST FROM 35N TO 44N BETWEEN 123W AND 131W WINDS 20
TO 30 KT. SEAS 2.5 TO 3.5 M.
.SYNOPSIS AND FORECAST.
.LOW 48N147W 1016 MB MOVING E 20 KT. WITHIN 240 NM E SEMICIRCLE
WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LOW 48N133W 1018 MB. WITHIN 180 NM OF CENTER
WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST LOW DISSIPATED. ASSOCIATED CONDITIONS
DIMINISHED.
.LOW 41N175W 1013 MB MOVING SE 20 KT. WITHIN 300 NM E...AND 180
NM W SEMICIRCLES WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW 56N127W 1014 MB. WITHIN 240 NM N SEMICIRCLE
WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST LOW 47N166W 1008 MB. WITHIN 360 NM SW AND NW
SEMICIRCLES WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST NEW LOW 44N160W 1012 MB. WITHIN 240 NM SE
SEMICIRCLE WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 47N TO 50N
BETWEEN 150W AND 141W.
.24 HOUR FORECAST DENSE FOG FROM 48N TO 53N W OF 177W.
.48 HOUR FORECAST CONDITIONS IMPROVED.
.FORECASTER BYRD. 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 SUN AUG 9.
24 HOUR FORECAST VALID 0000 UTC MON AUG 10.
48 HOUR FORECAST VALID 0000 UTC TUE AUG 11.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.WITHIN 11N86W TO 12N87W TO 12N88W TO 10N90W TO 09N88W TO 10N86W
TO 11N86W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO
30 KT. SEAS 2.5 M.
.24 HOUR FORECAST WITHIN 11N86W TO 13N87W TO 11N89W TO 11N93W TO
08N93W TO 08N92W TO 11N86W...INCLUDING THE GULF OF PAPAGAYO...E
WINDS 20 TO 30 KT. SEAS 2.5 M.
.48 HOUR FORECAST WITHIN 11N86W TO 12N87W TO 12N89W TO 10N90W
TO 10N88W TO 10N86W TO 11N86W...INCLUDING THE GULF OF PAPAGAYO...
E WINDS 20 TO 30 KT. SEAS 2.5 M.
.WITHIN 16N94W TO 16N95W TO 16N96W TO 14N96W 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 LITTLE CHANGE.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.WITHIN 02N123W TO 02N126W TO 02N128W TO 01N133W TO 00N134W TO
00N122W TO 02N123W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN SE
TO S SWELL.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.WITHIN 17N134W TO 18N137W TO 18N140W TO 13N140W TO 12N137W TO
15N133W TO 17N134W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N TO
NE SWELL.
.24 HOUR FORECAST WITHIN 17N139W TO 18N140W TO 14N140W TO
15N139W TO 17N139W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN E
SWELL.
.48 HOUR FORECAST WITHIN 18N137W TO 18N140W TO 15N140W TO 15N138W
TO 16N137W TO 18N137W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN
E TO SE SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 0350 UTC SUN AUG 9...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH EXTENDS FROM 07N77W TO 09N84W TO 08N90W.
SEGMENTS OF THE ITCZ EXTEND FROM 06N95W TO 07N110W TO 12N118W...
AND FROM 10N121W TO 11N138W. SCATTERED MODERATE FROM 08N TO 15N
BETWEEN 93W AND 106W. SCATTERED MODERATE ISOLATED STRONG FROM
04N TO 15N BETWEEN 110W AND 125W. SCATTERED MODERATE ISOLATED
STRONG FROM 01N TO 18N BETWEEN 126W AND 142W.
.FORECASTER RAMOS. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 0000 UTC AUG 09 2026.
24 HOUR FORECAST VALID 0000 UTC AUG 10 2026.
48 HOUR FORECAST VALID 0000 UTC AUG 11 2026.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST
.TROUGH 30N158W 24N164W MOVING NW SLOWLY.
.24 HOUR FORECAST TROUGH DISSIPATED.
.TROUGH 16N148W 12N50W 09N150W MOVING W 10 KT. ASSOCIATED SEAS
DESCRIBED BELOW. ISOLATED MODERATE TSTMS FROM 16N TO 11N BETWEEN
149W AND 146W.
.24 HOUR FORECAST TROUGH 14N153W 09N155W.
.48 HOUR FORECAST TROUGH 13N159W 09N157W.
.48 HOUR FORECAST NEW LOW NEAR 09N141W 1002 MB. WINDS 20 TO 25 KT
FROM 17N TO 07N E OF 149W. ASSOCIATED SEAS DESCRIBED BELOW.
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.
.SEAS 2.5 TO 3 M FROM 20N TO 14N BETWEEN 153W AND 143W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M FROM 20N TO 13N E OF 159W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M FROM 18N TO 13N E OF 158W.
.ITCZ 07N148W 06N163W 06N174W. ISOLATED MODERATE TSTMS FROM 12N
TO 07N BETWEEN 173W AND 167W...AND FROM 08N TO 01N BETWEEN 162W
AND 151W.
.ISOLATED MODERATE TSTMS FROM 16N TO 07N E OF 144W...S OF 06N E OF
148W...AND FROM 09N TO 06N W OF 175W.
$$
.FORECASTER TROTTER. HONOLULU HI.=