373 FZPN02 KWBC 201725 HSFEPI HIGH SEAS FORECAST FOR METAREA XII NWS OCEAN PREDICTION CENTER WASHINGTON DC 1745 UTC WED MAY 20 2026 CCODE/1:31:12:01:00/AOW+POR/NWS/CCODE SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 1200 UTC MAY 20. 24 HOUR FORECAST VALID 1200 UTC MAY 21. 48 HOUR FORECAST VALID 1200 UTC MAY 22. .WARNINGS. ...STORM WARNING... .LOW W OF AREA NEAR 50N179E 972 MB MOVING NE 25 KT. WITHIN 360 NM SE QUADRANT WINDS 35 TO 50 KT. SEAS 3.5 TO 6.5 M. ELSEWHERE FROM 36N TO 54N W OF 167W WINDS 25 TO 40 KT. SEAS 2.5 TO 5.5 M...HIGHEST NEAR 46N180W. .24 HOUR FORECAST LOW 55N168W 984 MB. WITHIN 480 NM S SEMICIRCLE WINDS 25 TO 40 KT. SEAS 3 TO 7.5 M...HIGHEST NEAR 51N167W. ELSEWHERE FROM 40N TO 58N BETWEEN 146W AND 178E WINDS 20 TO 30 KT. SEAS 2.5 TO 6 M...HIGHEST WITHIN 540 NM S QUADRANT. .48 HOUR FORECAST LOW MOVED INLAND NEAR 61N163W 997 MB. FROM 49N TO 58N BETWEEN 147W AND 179W WINDS 20 TO 30 KT. SEAS 2.5 TO 5 M. ELSEWHERE FROM 40N TO 49N BETWEEN 144W AND 175W WINDS LESS THAN 25 KT. SEAS TO 3.5 M. ...GALE WARNING... .COMPLEX LOW WITH MAIN CENTER 57N150W 1004 MB MOVING NE 10 KT. N OF 59N E OF 152W WINDS 25 TO 35 KT. SEAS TO 3.5 M. ELSEWHERE N OF 38N BETWEEN 136W AND 157W WINDS 20 TO 30 KT. SEAS TO 4 M. .12 HOUR FORECAST COMBINED LOW 59N146W 1006 MB. NE AND E OF A FRONT FROM LOW CENTER TO 59N140W TO 58N138W WINDS 30 TO 45 KT. SEAS 3 TO 6 M. .24 HOUR FORECAST LOW 60N146W 1012 MB. EXCEPT WHERE DESCRIBED ABOVE...WITHIN 600 NM N QUADRANT WINDS TO 25 KT. SEAS TO 3 M. .48 HOUR FORECAST LOW DISSIPATED INLAND AND ASSOCIATED CONDITIONS DIMINISHED. ...GALE WARNING... .S OF 51N BETWEEN 121W AND 133W AREA OF NW TO N WINDS 20 TO 30 KT. SEAS TO 3.5 M. .12 HOUR FORECAST FROM 36N TO 45N E OF 129W AREA OF NW TO N WINDS 25 TO 35 KT. SEAS TO 4 M. .24 HOUR FORECAST S OF 50N BETWEEN 122W AND 132W AREA OF NW TO N WINDS 20 TO 30 KT. SEAS TO 4 M. .48 HOUR FORECAST FROM 33N TO 50N BETWEEN 124W AND 132W AREA OF NW TO N WINDS 20 TO 30 KT. SEAS TO 4 M. .SYNOPSIS AND FORECAST. .48 HOUR FORECAST LOW WELL W OF AREA. FROM 36N TO 48N W OF 174W WINDS TO 25 KT. SEAS TO 2.5 M. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 40N TO 56N BETWEEN 145W AND 155W...FROM 48N TO 56N W OF 171W...AND N OF 59N BETWEEN 166W AND 175W. .24 HOUR FORECAST DENSE FOG N OF 52N BETWEEN 164W AND 178W AND FROM 45N TO 48N BETWEEN 139W AND 143W. .48 HOUR FORECAST DENSE FOG N AND NE OF A LINE FROM 59N177E TO 54N169W TO 57N156W AND FROM 39N TO 42N W OF 172W. .LIGHT FREEZING SPRAY N OF 60N W OF 176W. .24 HOUR FORECAST CONDITIONS DIMINISHED. .FORECASTER JOSEPH. 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 WED MAY 20. 24 HOUR FORECAST VALID 1200 UTC THU MAY 21. 48 HOUR FORECAST VALID 1200 UTC FRI MAY 22. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .WITHIN 11N86W TO 12N87W TO 11N89W TO 10N88W TO 10N86W TO 11N86W...INCLUDING GULF OF PAPAGAYO...NE TO E WINDS 20 TO 30 KT. SEAS NEAR 2.5 M. .24 HOUR FORECAST LITTLE CHANGE. .30 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .WITHIN 19N128W TO 30N140W TO 08N140W TO 08N119W TO 12N114W TO 19N128W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N TO NE SWELL. .24 HOUR FORECAST WITHIN 24N137W TO 30N140W TO 06N140W TO 07N136W TO 11N131W TO 15N136W TO 24N137W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N TO NE SWELL. .48 HOUR FORECAST WITHIN 11N138W TO 11N140W TO 09N140W TO 09N138W TO 10N138W TO 11N138W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N TO NE SWELL. .42 HOUR FORECAST WITHIN 02S113W TO 01S118W TO 01S120W TO 03.4S120W TO 03S113W TO 02S113W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN SW SWELL. .48 HOUR FORECAST LITTLE CHANGE. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. CONVECTION VALID AT 1500 UTC WED MAY 20... .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... MONSOON TROUGH AXIS EXTENDS FROM 09N83W TO 08N100W. ITCZ AXIS EXTENDS FROM 08N100W TO 08N114W...AND FROM 07N130W TO BEYOND 06N140W. SCATTERED MODERATE TO ISOLATED STRONG FROM 03N TO 10N E OF 90W. NUMEROUS MODERATE TO SCATTERED STRONG FROM 03N TO 12N BETWEEN 105W AND 114W. SCATTERED MODERATE FROM 03N TO 09N BETWEEN 93W AND 104W...AND W OF 129W. .FORECASTER CHAN. NATIONAL HURRICANE CENTER. NATIONAL WEATHER SERVICE HONOLULU HI NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W SYNOPSIS VALID 1200 UTC MAY 20 2026. 24 HOUR FORECAST VALID 1200 UTC MAY 21 2026. 48 HOUR FORECAST VALID 1200 UTC MAY 22 2026. .WARNINGS. ...GALE WARNING... .24 HOUR FORECAST NE TO E WINDS 25 TO 35 KT AROUND THE MAIN HAWAIIAN ISLANDS. FOR DETAILS SEE COASTAL WATERS FORECAST ISSUED BY NWS HONOLULU UNDER AWIPS HEADER HFOCWFHFO AND WMO HEADER FZHW50 PHFO. .48 HOUR FORECAST WINDS 20 TO 30 KT FROM 21N TO 18N BETWEEN 157W AND 154W. .SYNOPSIS AND FORECAST. .TROUGH 30N170W 27N175W 20N176W MOVING NW 10 KT. .24 HOUR FORECAST WEAK TROUGH 30N176W 26N180W. .48 HOUR FORECAST TROUGH MOVED NW OF AREA. .WINDS 20 TO 25 KT FROM 25N TO 11N E OF 149W...AND FROM 14N TO 10N BETWEEN 173W AND 164W. .24 HOUR FORECAST WINDS 20 TO 25 KT IN AREA BOUNDED BY 23N164W 29N148W 29N143W 12N147W 08N179W 14N178W 23N164W. .48 HOUR FORECAST WINDS 20 TO 25 KT FROM 27N TO 15N BETWEEN 167W AND 153W...AND FROM 15N TO 11N BETWEEN 172W AND 161W. .WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA. .SEAS 2.5 TO 3.5 M N OF 09N E OF 155W. SEAS 2.5 TO 3 M FROM 14N TO 10N BETWEEN 168W AND 159W. .24 HOUR FORECAST SEAS 2.5 TO 3.5 M E OF LINE 27N157W 16N164W 09N178W. .48 HOUR FORECAST SEAS 2.5 TO 3.5 M IN AREA BOUNDED BY 27N165W 30N151W 30N142W 14N144W 08N150W 10N180W 15N180W 27N165W .SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA. .ITCZ 04N140W 04N160W 04N180W. ISOLATED MODERATE TSTMS WITHIN 270 NM N OF ITCZ...AND 150 NM S OF ITCZ W OF 158W. $$ .FORECASTER PIERCE. HONOLULU HI.