FZPN01 KWBC 182130 HSFEP1 HIGH SEAS FORECAST NWS OCEAN PREDICTION CENTER WASHINGTON DC 2230 UTC MON MAY 18 2026 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 1800 UTC MAY 18. 24 HOUR FORECAST VALID 1800 UTC MAY 19. 48 HOUR FORECAST VALID 1800 UTC MAY 20. .WARNINGS. ...GALE WARNING... .LOW 53N164W 990 MB MOVING N 20 KT. FROM 50N TO 54N BETWEEN 159W AND 165W WINDS 25 TO 35 KT. SEAS 3.5 TO 5 M. ELSEWHERE WITHIN 300 NM NE...E...600 NM SE...S AND 300 NM SW QUADRANTS WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M...EXCEPT TO 3 M N OF THE ALEUTIAN ISLANDS. .24 HOUR FORECAST LOW 62N167W 998 MB. CONDITIONS DIMINISHED. ...GALE WARNING... .LOW JUST W OF THE AREA 37N179E 1006 MB MOVING NE 45 KT. FROM 33N TO 37N W OF 177W WINDS TO 25 KT. SEAS TO 2.5 M. .06 HOUR FORECAST LOW 37N177W 1004 MB. FROM 34N TO 38N W OF 175W WINDS 25 TO 35 KT. SEAS TO 3.5 M. .24 HOUR FORECAST LOW 47N160W 1007 MB. BETWEEN 120 NM AND 420 NM SE AND S QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. ELSEWHERE BETWEEN 180 NM AND 540 NM NE...90 NM AND 540 NM SE AND WITHIN 900 NM SW QUADRANTS WINDS 20 TO 30 KT. SEAS TO 3 M. .48 HOUR FORECAST LOW ABSORBED BY NEW LOW 58N147W 1004 MB. WITHIN 90 NM N AND NE OF A LINE FROM 59N147W TO 57N139W AND WITHIN 90 NM NE AND E OF LINE FROM 57N139W TO 54N139W WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. ELSEWHERE N OF 50N BETWEEN 135W AND 152W WINDS 20 TO 30 KT. SEAS TO 3.5 M. ...GALE WARNING... .30 HOUR FORECAST LOW W OF AREA 49N174E 984 MB. FROM 40N TO 50N W OF 175W WINDS 20 TO 30 KT. SEAS TO 3 M. .36 HOUR FORECAST LOW W OF AREA 50N177E 978 MB. FROM 42N TO 51N W OF 173W WINDS 30 TO 40 KT. SEAS 3 TO 5 M. .48 HOUR FORECAST LOW 51N176W 977 MB. WITHIN 240 NM E...SE AND 300 NM S QUADRANTS WINDS 35 TO 45 KT. SEAS 4 TO 8 M...HIGHEST NEAR 49N177W. ELSEWHERE FROM 40N TO 57N W OF 160W WINDS 25 TO 40 KT. SEAS 2.5 TO 5 M. .SYNOPSIS AND FORECAST. .FROM 30N TO 37N BETWEEN 121W AND 136W AND E OF A LINE FROM 37N132W TO 42N128W AREA OF N TO NE WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M. .24 HOUR FORECAST FROM 30N TO 38N BETWEEN 123W AND 135W AND E OF A LINE FROM 38N130W TO 42N127W AREA OF N TO NE WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M. ELSEWHERE FROM 48N TO 52N BETWEEN 127W AND 129W WINDS TO 25 KT. SEAS TO 2.5 M. .48 HOUR FORECAST CONDITIONS DESCRIBED ABOVE IN WARNINGS SECTION WITH LOW 58N147W. .LOW 56N178W 983 MB MOVING E 10 KT. N OF 40N W OF 170W AND WITHIN 360 NM W...180 NM NW AND BETWEEN 130 NM AND 300 NM N QUADRANTS WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M...EXCEPT TO 3 M N OF THE ALEUTIAN ISLANDS. .24 HOUR FORECAST LOW 56N174W 993 MB. FROM 47N TO 55N BETWEEN 161W AND 180W AND IN THE BERING SEA FROM 55N TO 59N BETWEEN 161W AND 172W WINDS TO 25 KT. SEAS 2.5 TO 4 M...EXCEPT TO 2.5 M N OF THE ALEUTIAN ISLANDS. .48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED. .INLAND LOW 58N157W 1001 MB DRIFTING N. WITHIN 600 NM SE QUADRANT WINDS TO 25 KT. SEAS TO 3.5 M. .24 HOUR FORECAST INLAND LOW 59N156W 1004 MB. N OF 50N BETWEEN 140W AND 153W WINDS TO 25 KT. SEAS TO 3.5 M. .48 HOUR FORECAST LOW ABSORBED AND CONDITIONS DESCRIBED ABOVE IN WARNINGS SECTION WITH LOW 58N147W. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 53N TO 55N BETWEEN 160W AND 166W AND N OF THE ALEUTIAN ISLANDS N OF 52N W OF170W. .24 HOUR FORECAST DENSE FOG FROM 42N TO 50N BETWEEN 149W AND 162W...WITHIN 60 NM W AND NW OF A LINE FROM 50N156W TO 54N150W AND IN THE BERING SEA WITHIN 90 NM N AND NE OF A LINE FROM 56N167W TO 57N177E. .48 HOUR FORECAST DENSE FOG WITHIN 60 NM E OF A LINE FROM 53N141W TO 47N141W...WITHIN 90 NM NE AND E OF A LINE FROM 54N146W TO 41N155W AND IN THE BERING SEA WITHIN 180 NM NW AND N OF A LINE FROM 51N179W TO 54N176W TO 53N169W. .FORECASTER FUTTERMAN. 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 1800 UTC MON MAY 18. 24 HOUR FORECAST VALID 1800 UTC TUE MAY 19. 48 HOUR FORECAST VALID 1800 UTC WED MAY 20. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .WITHIN 24N113W TO 29N115W TO 27N140W TO 04N140W TO 09N123W TO 16N124W TO 24N113W...INCLUDING ENTRANCE TO SEBASTIAN VIZCAINO BAY...WINDS 20 KT OR LESS. SEAS 2.5 TO 4.0 M IN N TO NE SWELL. .24 HOUR FORECAST WITHIN 30N120W TO 30N140W TO 08N140W TO 10N124W TO 19N115W TO 30N120W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N TO NE SWELL. .48 HOUR FORECAST WITHIN 23N131W TO 30N140W TO 07N140W TO 10N125W TO 18N131W TO 23N131W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N TO NE SWELL. .WITHIN 02N130W TO 04N130W TO 04N134W TO 03N134W TO 00N140W TO 00N128W TO 02N130W 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 01S110W TO 00N114W TO 02S117W TO 03S117W TO 03S108W TO 01S110W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S TO SW SWELL. .15 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .06 HOUR FORECAST WITHIN 11N86W TO 12N87W TO 11N89W TO 10N88W TO 10N86W TO 11N86W...INCLUDING GULF OF PAPAGAYO...E TO SE WINDS 20 TO 25 KT. SEAS NEAR 2.5 M. .24 HOUR FORECAST LITTLE CHANGE. .48 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 2100 UTC MON MAY 18... .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... MONSOON TROUGH AXIS EXTENDS FROM 09N84W TO 07N91W. ITCZ AXIS EXTENDS FROM 07N91W TO 07N120W TO BEYOND 07N140W. SCATTERED MODERATE TO ISOLATED STRONG FROM 02N TO 11N E OF 88W...AND FROM 05N TO 12N BETWEEN 93W AND 117W. NUMEROUS MODERATE TO SCATTERED STRONG FROM 03N TO 11N W OF 118W. .FORECASTER CHAN. NATIONAL HURRICANE CENTER. $$