FZPN01 KWBC 151608 HSFEP1 HIGH SEAS FORECAST NWS OCEAN PREDICTION CENTER WASHINGTON DC 1630 UTC SAT AUG 15 2026 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 AUG 15. 24 HOUR FORECAST VALID 1200 UTC AUG 16. 48 HOUR FORECAST VALID 1200 UTC AUG 17. .WARNINGS. ...GALE WARNING... .LOW 50N167W 991 MB MOVING N 20 KT. WITHIN 480 NM S AND SE...360 NM E...AND 300 NM NE QUADRANTS WINDS 25 TO 40 KT. SEAS 3 TO 6 M. .24 HOUR FORECAST COMPLEX LOW 57N164W 997 MB AND SECOND NEW LOW 50N163W 1003 MB. FROM 42N TO 50N BETWEEN 158W AND 170W WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M. ELSEWHERE FROM 50N TO 59N BETWEEN 147W AND 164W WINDS 20 TO 30 KT. SEAS TO 3.5 M. .48 HOUR FORECAST LOW 61N163W 993 MB. FROM 52N TO 59N BETWEEN 140W AND 167W WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M. ...GALE WARNING... .LOW 40N178W 1000 MB MOVING E 10 KT AND TURNING NE 15 KT AFTER 24 HOURS. WITHIN 480 NM E AND SE...AND 180 NM W AND SW QUADRANTS WINDS 20 TO 30 KT. SEAS 2.5 TO 5 M. .06 HOUR FORECAST LOW 40N177W 1000 MB. WITHIN 360 NM E AND SE QUADRANTS WINDS 25 TO 35 KT. SEAS 3 TO 5.5 M. .24 HOUR FORECAST LOW 38N174W 1008 MB. WITHIN 360 NM E AND SE...AND 120 NM W AND NW QUADRANTS WINDS 20 TO 30 KT. SEAS TO 4 M. .48 HOUR FORECAST LOW 43N168W 1014 MB. WITHIN 300 NM E AND SE QUADRANTS WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M. .SYNOPSIS AND FORECAST. .48 HOUR FORECAST FROM 38N TO 43N BETWEEN 123W AND 128W WINDS TO 25 KT. SEAS LESS THAN 2.5 M. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 45N TO 52N BETWEEN 165W AND 169W...AND N OF 58N BETWEEN 163W AND 175W. .24 HOUR FORECAST DENSE FOG FROM 45N TO 56N BETWEEN 148W AND 165W...AND N OF 53N BETWEEN 168W AND 179W. .48 HOUR FORECAST DENSE FOG WITHIN 120 NM NW OF A LINE FROM 53N141W TO 48N155W...AND N OF 57N BETWEEN 160W AND 174W. .FORECASTER ROWLAND. 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 1200 UTC SAT AUG 15. 24 HOUR FORECAST VALID 1200 UTC SUN AUG 16. 48 HOUR FORECAST VALID 1200 UTC MON AUG 17. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .TROPICAL DEPRESSION HERNAN NEAR 16.1N 134.9W 1006 MB AT 1500 UTC AUG 15 MOVING W OR 270 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 20N130W TO 22N133W TO 25N140W TO 15N139W TO 14N135W TO 16N131W TO 20N130W WINDS 20 TO 30 KT. SEAS 2.5 TO 3 M. ELSEWHERE WITHIN 20N128W TO 25N135W TO 26N140W TO 14N140W TO 13N133W TO 15N130W TO 20N128W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN MIXED SWELL. .12 HOUR FORECAST POST-TROPICAL REMNANT LOW HERNAN NEAR 16.2N 136.6W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WITHIN 21N135W TO 21N140W TO 16N139W TO 17N136W TO 18N135W TO 21N135W WINDS 20 TO 25 KT. SEAS 2.5 TO 3 M. .24 HOUR FORECAST POST-TROPICAL REMNANT LOW HERNAN NEAR 16.4N 138.9W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WITHIN 19.5N135W TO 22N136W TO 23N140W TO 19N140W TO 15N140W TO 17N136W TO 19.5N135W WINDS 20 KT OR LESS...EXCEPT NE TO E WINDS 20 TO 25 KT FROM 16N TO 19N BETWEEN 138W AND 140W. SEAS 2.5 TO 3 M IN MIXED SWELL. .48 HOUR FORECAST POST-TROPICAL REMNANT LOW HERNAN W OF AREA NEAR 16.7N 142.8W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT. OVER FORECAST WATERS WINDS 20 KT OR LESS. SEAS LESS THAN 4 M. FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE AND INTENSITY. .WITHIN 15N94W TO 16N94W TO 16N95W TO 16N96W TO 14N96W TO 14N95W TO 15N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 30 KT. SEAS 2.5 TO 3 M. .24 HOUR FORECAST LITTLE CHANGE. .48 HOUR FORECAST LITTLE CHANGE. .WITHIN 12N86W TO 12N88W TO 11N89W TO 10N89W TO 10N88W TO 10N86W TO 12N86W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS BUILDING TO 2.5 TO 3 M. .24 HOUR FORECAST WITHIN 12N86W TO 11N90W TO 10N92W TO 09N91W TO 09N89W TO 10N88W TO 11N86W TO 12N86W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3 M. .48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .WITHIN 01N106W TO 01N113W TO 01S120W TO 03.4S120W TO 03.4S104W TO 01N106W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN S TO SW SWELL. .24 HOUR FORECAST WITHIN 01S97W TO 00N110W TO 00N120W TO 03.4S120W TO 03.4S91W TO 01S97W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN MIXED SE AND SW SWELL. .48 HOUR FORECAST WITHIN 01S100W TO 00N110W TO 01N124W TO 03.4S120W TO 03.4S110W TO 01S100W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SE AND SW SWELL. .36 HOUR FORECAST WITHIN 29N114W TO 30N116W TO 28N116W TO 26N115W TO 26N114W TO 29N114W...INCLUDING SEBASTIAN VIZCAINO BAY AND WITHIN 60 NM OF SHORE...NW WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .48 HOUR FORECAST LITTLE CHANGE. .48 HOUR FORECAST WITHIN 12N118W TO 14N122W TO 13N124W TO 11N123W TO 10N120W TO 11N118W TO 12N118W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN MIXED SWELL. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. CONVECTION VALID AT 1515 UTC SAT AUG 15... .TROPICAL DEPRESSION HERNAN...NO DEEP CONVECTION IS NOTED. .TROPICAL WAVE ALONG 103W S OF 17N...NUMEROUS MODERATE TO STRONG FROM 07N TO 13N BETWEEN THE WAVE AND 110W. .SCATTERED MODERATE FROM 07N TO 12N BETWEEN 111W AND 120W. .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... MONSOON TROUGH AXIS EXTENDS FROM 10N84W TO 10N99W TO 08N105W. ITCZ EXTENDS FROM 08N105W TO 05N115W TO 08N123W TO 13N130W. NUMEROUS MODERATE TO STRONG FROM 05N TO 09N BETWEEN 78W AND 88W. SCATTERED MODERATE ISOLATED STRONG WITHIN 120 NM S OF THE TROUGH BETWEEN 95W AND 100W. $$ .FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.