High Seas Forecast
Issued by NWS
Issued by NWS
110 FZPN02 KWBC 171125 HSFEPI HIGH SEAS FORECAST FOR METAREA XII NWS OCEAN PREDICTION CENTER WASHINGTON DC 1145 UTC MON AUG 17 2026 CCODE/2:31:12:11:00/AOW+POR+AOE/NWS/CCODE SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 17. 24 HOUR FORECAST VALID 0600 UTC AUG 18. 48 HOUR FORECAST VALID 0600 UTC AUG 19. .WARNINGS. ...GALE WARNING... .LOW 61N164W 991 MB MOVING N 20 KT. N OF 52N BETWEEN 177W AND 138W WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M. .24 HOUR FORECAST LOW 67N160W 999 MB. N OF 55N BETWEEN 170W AND 149W WINDS 20 TO 30 KT. SEAS TO 3.5 M. .48 HOUR FORECAST LOW WELL N OF AREA. ASSOCIATED CONDITIONS DIMINISHED. .SYNOPSIS AND FORECAST. .LOW 43N169W 1015 MB MOVING NE 20 KT. FROM 35N TO 46N BETWEEN 174W TO 164W WINDS 20 TO 30 KT. SEAS TO 2.5 M. .24 HOUR FORECAST LOW 51N158W 1014 MB. FROM 43N TO 53N BETWEEN 162W AND 151W WINDS 20 TO 30 KT. SEAS TO 2.5 M. .48 HOUR FORECAST LOW 56N141W 1016 MB. ASSOCIATED CONDITIONS DIMINISHED. .FROM 38N TO 44N BETWEEN 123W AND 128W WINDS TO 25 KT. SEAS LESS THAN 2.5 M. .24 HOUR FORECAST FROM 30N TO 51N BETWEEN 115W AND 132W WINDS TO 25 KT. SEAS TO 2.5 M. .48 HOUR FORECAST FROM 30N TO 44N BETWEEN 116W AND 129W WINDS 20 TO 30 KT. SEAS TO 3 M. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 49N BETWEEN 151W AND 142W...AND N OF 59N W OF ALASKA. .24 HOUR FORECAST DENSE FOG FROM 47N TO 53N BETWEEN 142W AND 165W. .48 HOUR FORECAST DENSE FOG FROM 49N TO 54N BETWEEN 157W AND 142W. .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 0600 UTC MON AUG 17. 24 HOUR FORECAST VALID 0600 UTC TUE AUG 18. 48 HOUR FORECAST VALID 0600 UTC WED AUG 19. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .WITHIN 29N115W TO 30N116W TO 29N116W TO 27N115W TO 26N115W TO 29N115W...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 CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .WITHIN 16N94W TO 16N95W TO 16N96W TO 14N96W TO 14N95W TO 14N94W TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M. .24 HOUR FORECAST LITTLE CHANGE. .48 HOUR FORECAST LITTLE CHANGE. .WITHIN 12N88W TO 11N89W TO 10N90W TO 10N89W TO 10N88W TO 12N88W E TO SE WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .12 HOUR FORECAST WITHIN 10N95W TO 11N97W TO 10N98W TO 09N96W TO 10N95W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL. .24 HOUR FORECAST WITHIN 11N86W TO 12N87W TO 11N88W TO 10N88W TO 10N86W TO 11N86W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .48 HOUR FORECAST WITHIN 12N86W TO 12N89W TO 10N90W TO 10N89W TO 10N87W TO 11N86W TO 12N86W...INCLUDING THE GULF OF PAPAGAYO... NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .WITHIN 00N107W TO 01S112W TO 02N116W TO 00N126W TO 03.4S120W TO 03.4S99W TO 00N107W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SE AND SW SWELL. .24 HOUR FORECAST WITHIN 01N96W TO 03N106W TO 00N114W TO 00N128W TO 03.4S120W TO 03.4S89W TO 01N96W...EXCEPT LEE OF GALAPAGOS ISLANDS...WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SE AND SW SWELL. .48 HOUR FORECAST WITHIN 02N104W TO 05N104W TO 02N112W TO 00N131W TO 03.4S120W TO 03.4S81W TO 02N104W...EXCEPT LEE OF GALAPAGOS ISLANDS... WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SE AND SW SWELL. .12 HOUR FORECAST TROPICAL WAVE NEAR 126W. WITHIN 13N124W TO 14N126W TO 14N128W TO 12N129W TO 09N125W TO 10N124W TO 13N124W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL. .24 HOUR FORECAST TROPICAL WAVE NEAR 130W. WITHIN 12N126W TO 13N127W TO 13N130W TO 11N129W TO 10N128W TO 11N126W TO 12N126W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SE AND SW SWELL. .36 HOUR FORECAST TROPICAL WAVE NEAR 134W. CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .21 HOUR FORECAST WITHIN 26N109W TO 27N109W TO 28N112W TO 27N111W TO 24N108W TO 26N109W...INCLUDING THE CENTRAL AND SOUTHERN GULF OF CALIFORNIA...SE WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .24 HOUR FORECAST WITHIN 27N109W TO 28N111W TO 28N112W TO 24N111W TO 24N109W TO 25N108W TO 27N109W...INCLUDING THE CENTRAL AND SOUTHERN GULF OF CALIFORNIA...SE 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. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. CONVECTION VALID AT 0720 UTC MON AUG 17... .TROUGH FROM 23.5N130W TO 18N140W...SCATTERED MODERATE ISOLATED STRONG FROM 23.5N TO 28N BETWEEN 125W AND 134W. .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... MONSOON TROUGH FROM LOW PRES NEAR 10.5N73.5W TO 11N84.5W TO 07N102W. ITCZ FROM 07N102W TO 08N122W THEN RESUMES FROM 07N124W TO BEYOND 05N140W. SCATTERED TO NUMEROUS MODERATE AND ISOLATED STRONG FROM 02N TO 14N BETWEEN 77W AND 106W...AND FROM 05N TO 13N BETWEEN 115W AND 131W. .FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER. NATIONAL WEATHER SERVICE HONOLULU HI NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W SYNOPSIS VALID 0600 UTC AUG 17 2026. 24 HOUR FORECAST VALID 0600 UTC AUG 18 2026. 48 HOUR FORECAST VALID 0600 UTC AUG 19 2026. .WARNINGS. ...HURRICANE WARNING... .TROPICAL STORM LALA NEAR 20.7N 162.6W 997 MB AT 0900 UTC AUG 17 MOVING W OR 270 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM S SEMICIRCLE...80 NM NE QUADRANT AND 90 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 210 NM NE QUADRANT...90 NM SE QUADRANT...120 NM SW QUADRANT...AND 150 NM NW QUADRANT WITH SEAS TO 7 M. WINDS 20 TO 30 KT AND SEAS 2.5 TO 4 M ELSEWHERE FROM 19N TO 26N BETWEEN 156W AND 166W. .24 HOUR FORECAST TROPICAL STORM LALA NEAR 20.5N 165.9W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 100 NM NE QUADRANT...60 NM SE QUADRANT...50 NM SW QUADRANT...AND 80 NM NW QUADRANT. SEAS 4 M OR GREATER FROM 19N TO 23N BETWEEN 163W AND 167W WITH SEAS TO 5.5 M. WINDS 20 TO 30 KT ND SEAS 2.5 TO 4 M ELSEWHERE FROM 18N TO 28N BETWEEN 160W AND 171W. .48 HOUR FORECAST HURRICANE LALA NEAR 20.9N 169.2W. MAXIMUM SUSTAINED WINDS 70 KT GUSTS 85 KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM NE QUADRANT...80 NM SE QUADRANT...50 NM SW QUADRANT...AND 90 NM NW QUADRANT. SEAS 4 M OR GREATER FROM 19N TO 25N BETWEEN 166W AND 171W WITH SEAS TO 8 M. WINDS 20 TO 30 KT AND SEAS 2.5 TO 4 M FROM 18N TO 27N BETWEEN 164W AND 174W. FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE AND INTENSITY. SEE THE LATEST BULLETIN ISSUED BY NHC UNDER WMO HEADER WTPA22 PHFO. .SYNOPSIS AND FORECAST .LOW 17N141W 1009 MB MOVING W 10 KT. TROUGH FROM 17N140W TO LOW TO 05N140W. WINDS 20 TO 25 KT WITHIN 120 NM N SEMICIRCLE OF LOW. ISOLATED MODERATE TSTMS WITHIN 60 NM OF LOW. .24 HOUR FORECAST LOW 18N145W 1010 MB. TROUGH FROM 20N144W TO LOW TO 15N146W 13N146W. WINDS 20 TO 25 KT WITHIN 120 NM N SEMICIRCLE OF LOW. .48 HOUR FORECAST LOW WEAKENED TO TROUGH 24N145W 21N147W 18N148W 14N150W. WINDS 20 TO 25 KT WITHINT 90 NM N SEMICIRCLE OF LOW. .24 HOUR FORECAST FRONT 30N178W 29N179W 28N180W. .48 HOUR FORECAST FRONT WEAKENED TO TROUGH 30N179W 29N179W 27N180W. .WINDS 20 KT OR LESS OVER THE REMAINDER OF FORECAST AREA. .SEAS 2.5 M OR LESS OVER THE REMAINDER OF FORECAST AREA. .MONSOON TROUGH 10N156W 08N162W 07N174W 07N178E. SCATTERED MODERATE TSTMS WITHIN 120 NM OF TROUGH. .ITCZ 01N156W 03N144W 02N152W 03N144W 04N142W 04N140W ISOLATED MODERATE TSTMS WITHIN 150 NM OF ITCZ. $$ .FORECASTER M BALLARD. HONOLULU HI.