High Seas Forecast
Issued by NWS
Issued by NWS
570 FZPN02 KWBC 301725 HSFEPI HIGH SEAS FORECAST FOR METAREA XII NWS OCEAN PREDICTION CENTER WASHINGTON DC 1745 UTC THU JUL 30 2026 CCODE/2:31:12:11:00/AOW+POR+AOE/NWS/CCODE SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 1200 UTC JUL 30. 24 HOUR FORECAST VALID 1200 UTC JUL 31. 48 HOUR FORECAST VALID 1200 UTC AUG 01. .WARNINGS. ...GALE WARNING... .LOW 53N141W 998 MB MOVING SW 10 KT THEN TURNING SE AFTER 12 HOURS. WITHIN 180 NM N AND E OF A FRONT FROM LOW CENTER TO 54N138W TO 54N135W TO 51N131W WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. ELSEWHERE 44N TO 57N BETWEEN 128W AND 149W WINDS TO 25 KT. SEAS TO 3 M. .24 HOUR FORECAST LOW 51N140W 1004 MB. BETWEEN 90 NM AND 420 NM SW AND W QUADRANTS...AND N OF 49N E OF 130W WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M. .48 HOUR FORECAST LOW 50N134W 1013 MB. BETWEEN 120 NM AND 600 NM S AND SW QUADRANTS WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M. .SYNOPSIS AND FORECAST. .S OF 40N BETWEEN 119W AND 130W AREA OF NW TO N WINDS TO 25 KT. SEAS TO 3 M. .24 HOUR FORECAST S OF 39N BETWEEN 119W AND 128W AREA OF NW TO N WINDS TO 25 KT. SEAS TO 3 M. .48 HOUR FORECAST FROM 31N TO 40N BETWEEN 120W AND 126W AREA OF NW WINDS 20 TO 30 KT. SEAS TO 3 M. .LOW 44N142W 1010 MB MOVING NE 20 KT. WITHIN 420 NM SE AND 600 NM SW QUADRANTS WINDS TO 25 KT. SEAS TO 3 M. .24 HOUR FORECAST LOW 46N133W 1014 MB. WITHIN 120 NM SE OF A FRONT FROM LOW CENTER TO 42N138W TO 38N146W WINDS TO 25 KT. SEAS TO 2.5 M. .48 HOUR FORECAST LOW 54N130W 1012 MB. CONDITIONS DIMINISHED. .LOW 62N286E 1004 MB MOVING NE 25 KT. FROM 43N TO 54N W OF 171W WINDS TO 25 KT. SEAS TO 2.5 M. .24 HOUR FORECAST LOW 55N170W 1006 MB. BETWEEN 120 NM AND 660 NM SE SEMICIRCLE WINDS 20 TO 30 KT. SEAS TO 3 M. .48 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER NEAR 56N162W 1010 MB. WITHIN 840 NM SE AND 480 NM SW QUADRANTS WINDS TO 25 KT. SEAS TO 2.5 M. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 43N TO 55N W OF 165W. .24 HOUR FORECAST DENSE FOG FROM 47N TO 58N BETWEEN 158W AND 173W...AND WITHIN 180 NM SE OF A LINE FROM 48N169W TO 45N175W TO 45N180W. .48 HOUR FORECAST DENSE FOG WITHIN 300 NM SE OF A LINE FROM 54N156W TO 50N155W TO 45N163W...AND FROM 42N TO 57N W OF 173W. .FORECASTER ANDERSON. 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 1200 UTC THU JUL 30. 24 HOUR FORECAST VALID 1200 UTC FRI JUL 31. 48 HOUR FORECAST VALID 1200 UTC SAT AUG 1. .WARNINGS. ...HURRICANE WARNING... .HURRICANE GENEVIEVE NEAR 20.6N 123.5W 980 MB AT 1500 UTC JUL 30 MOVING WNW OR 290 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 70 KT GUSTS 85 KT. TROPICAL STORM FORCE WINDS WITHIN 100 NM E SEMICIRCLE...80 NM SW QUADRANT AND 110 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 210 NM NE AND SW QUADRANTS...240 NM NW QUADRANT AND 180 NM SE QUADRANT WITH SEAS TO 10 M. ELSEWHERE WITHIN 24N120W TO 24N126W TO 20N127W TO 18N126W TO 17N121W TO 18N119W TO 24N120W WINDS 20 TO 33 KT. SEAS 2.5 TO 4.0 M. REMAINDER OF AREA WITHIN 24N116W TO 30N121W TO 27N140W TO 14N140W TO 17N135W TO 13N125W TO 24N116W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN MIXED SWELL. .12 HOUR FORECAST TROPICAL STORM GENEVIEVE NEAR 21.0N 125.5W. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. .24 HOUR FORECAST TROPICAL STORM GENEVIEVE NEAR 21.7N 128.1W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 80 NM NE QUADRANT...70 NM SE QUADRANT...60 NM SW QUADRANT...AND 90 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 150 M E SEMICIRCLE...AND 180 NM W SEMICIRCLE WITH SEAS TO 8 M. ELSEWHERE WITHIN 23N124W TO 26N126W TO 26N131W TO 23N132W TO 19N130W TO 18N127W TO 23N124W WINDS 20 TO 33 KT. SEAS 2.5 TO 4.0 M. REMAINDER OF AREA WITHIN 30N124W TO 25N131W TO 30N132W TO 27N140W TO 15N140W TO 17N124W TO 30N124W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN MIXED SWELL. .48 HOUR FORECAST TROPICAL STORM GENEVIEVE NEAR 23.3N 133.6W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 80 NM N SEMICIRCLE...50 NM SE QUADRANT AND 40 NM SW QUADRANT. SEAS 4 M OR GREATER WITHIN 150 NM OF CENTER...EXCEPT 75 NM SE QUADRANT WITH SEAS TO 5.5 M. ELSEWHERE WITHIN 27N132W TO 28N135W TO 26N139W TO 22N136W TO 21N131W TO 23N130W TO 27N132W WINDS 20 TO 33 KT. SEAS 2.5 TO 4.0 M. REMAINDER OF AREA WITHIN 28N131W TO 30N135W TO 29N140W TO 21N140W TO 18N134W TO 24N129W TO 28N131W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN MIXED SWELL. FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE AND INTENSITY. .SYNOPSIS AND FORECAST. .WITHIN 11N86W TO 11N89W TO 10N90W TO 08N89W TO 08N88W TO 10N86W TO 11N86W...INCLUDING THE GULF OF PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M. .24 HOUR FORECAST LITTLE CHANGE. .48 HOUR FORECAST LITTLE CHANGE. .12 HOUR FORECAST WITHIN 16N94.5W TO 16N95W TO 14.5N95.5W TO 14N95W TO 14N94.5W TO 14.5N94.5W TO 16N94.5W...INCLUDING THE GULF OF TEHUANTEPEC...NW TO N WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .24 HOUR FORECAST LITTLE CHANGE. .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 1500 UTC THU JUL 30... .HURRICANE GENEVIEVE...NUMEROUS MODERATE TO STRONG WITHIN 60 NM NE QUADRANT...120 NM S SEMICIRCLE...AND 180 NM NW SEMICIRCLE. .TROPICAL WAVE ALONG 76W...NUMEROUS MODERATE TO STRONG FROM 02N TO 10N BETWEEN 77W AND 83W. .TROPICAL WAVE ALONG 98W...NUMEROUS MODERATE ISOLATED STRONG FROM 09N TO 15N BETWEEN 98W AND 104W. .TROPICAL WAVE ALONG 110W...ISOLATED TO WIDELY SCATTERED MODERATE TO STRONG FROM 03N TO 24N BETWEEN 105W AND 115W. .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... MONSOON TROUGH FROM 10N85W TO 05N98W TO 15N118W THEN RESUMES SSW OF GENEVIEVE FROM 15N125W TO BEYOND 06.5N140W. ISOLATED TO WIDELY SCATTERED MODERATE TO STRONG CONVECTION IS NOTED WITHIN 240 NM EITHER SIDE OF MONSOON TROUGH BETWEEN 130W AND 140W. .FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER. NATIONAL WEATHER SERVICE HONOLULU HI NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W SYNOPSIS VALID 1200 UTC JUL 30 2026. 24 HOUR FORECAST VALID 1200 UTC JUL 31 2026. 48 HOUR FORECAST VALID 1200 UTC AUG 01 2026. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .LOW 24N159W 1012 MB MOVING W 10 KT. TROUGH 27N158W TO LOW TO 20N161W. WINDS 20 TO 25 KT AND SEAS 2.5 TO 3 M WITHIN 90 NM OF N SEMICIRCLE. SCATTERED MODERATE TSTMS WITHIN 120 NM OF TROUGH N OF 25N. .24 HOUR FORECAST LOW 26N163W 1014 MB. TROUGH 28N163W TO LOW TO 22N161W. WINDS 20 TO 25 KT WITHIN 60 NM OF N SEMICIRCLE. .48 HOUR FORECAST LOW WEAKENING TO TROUGH 30N173W 25N172W. WINDS DECREASING TO 20 KT OR LESS. .LOW 06N149W 1008 MB NEARLY STATIONARY. .24 HOUR FORECAST LOW DISSIPATED. .48 HOUR FORECAST WINDS 20 TO 30 KT FROM 15N TO 25N BETWEEN 161W AND 148W...AND FROM 24N TO 28N E OF 148W. .WINDS 20 KT OR LESS OVER THE REMAINDER OF FORECAST AREA. .SEAS 2.5 TO 3 M FROM 15N OT 25N E OF 147W. .24 HOUR FORECAST SEAS 2.5 TO 3 M FROM 15N TO 25N E OF 153W. .48 HOUR FORECAST SEAS 2.5 TO 3 M SUBSIDING TO 2.5 M OR LESS. .SEAS 2.5 M OR LOWER OVER REMAINDER OF THE FORECAST AREA. .MONSOON TROUGH 07N179W 05N170W 06N153W 07N145W 07N140W. SCATTERED MODERATE TSTMS WITHIN 120 NM OF TROUGH BETWEEN 178W AND 153W...AND FROM 00N TO 08N E OF 153W. .ISOLATED MODERATE TSTMS FROM 20N TO 25N W OF 170W.. $$ .FORECASTER PECHACEK. HONOLULU HI.