FZPN02 KWBC 191725 HSFEPI HIGH SEAS FORECAST FOR METAREA XII NWS OCEAN PREDICTION CENTER WASHINGTON DC 1745 UTC MON AUG 19 2024 CCODE/1:31:12:01:00/AOW+POR/NWS/CCODE SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 N OF 30N AND S OF 67N E OF A LINE FROM BERING STRAIT TO 50N 160E ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS SYNOPSIS VALID 1200 UTC AUG 19. 24 HOUR FORECAST VALID 1200 UTC AUG 20. 48 HOUR FORECAST VALID 1200 UTC AUG 21. .WARNINGS. ...STORM WARNING... .LOW 48N169E 976 MB MOVING NE 25 KT. WITHIN 300 NM NE...300 NM E...SE AND 240 NM S QUADRANTS WINDS 40 TO 55 KT. SEAS 14 TO 36 FT...HIGHEST S QUADRANT. ELSEWHERE WITHIN 420 NM NE...600 NM SE...360 NM S...420 NM SW AND 300 NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS 8 TO 22 FT. ..HIGHEST S QUADRANT. .24 HOUR FORECAST LOW JUST W OF THE AREA 57N173E 964 MB. WITHIN 240 NM NE AND SW QUADRANTS AND WITHIN 300 NM SE SEMICIRCLE WINDS 35 TO 50 KT. SEAS 10 TO 22 FT...HIGHEST NEAR 49N179E. ELSEWHERE WITHIN 540 NM NE...660 NM SE AND 600 NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 16 FT...HIGHEST SE SEMICIRCLE. .48 HOUR FORECAST LOW W OF AREA NEAR 63N177W 978 MB. WITHIN 240 NM NE...300 NM SE AND 480 NM SW QUADRANTS WINDS 30 TO 45 KT. SEAS 14 TO 27 FT...HIGHEST SE QUADRANT. ELSEWHERE WITHIN 420 NM NE...540 NM SE AND 660 NM SW QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 18 FT IN MIXED SWELL. ...GALE WARNING... .FROM 54N TO 60N BETWEEN 140W AND 160W AND N AND NE OF A LINE FROM 60N160W TO 62N173W TO ALASKA AREA OF W TO NW WINDS 20 TO 30 KT. SEAS TO 10 FT. .06 HOUR FORECAST NEW LOW 60N147W 1006 MB. WITHIN 360 NM SW AND W QUADRANTS...INCLUDING THE SHELIKOF STRAIT WINDS 25 TO 35 KT. SEAS 8 TO 12 FT. .24 HOUR FORECAST LOW 59N142W 1008 MB. WITHIN 90 NM N AND NE OF A LINE FROM 59N153W TO 56N147W TO 56N141W WINDS 25 TO 35 KT. SEAS 8 TO 12 FT...HIGHEST NEAR 58N146W. ELSEWHERE WITHIN 120 NM NE OF A LINE FROM 53N141W TO 55N154W WINDS TO 25 KT. SEAS TO 8 FT. .48 HOUR FORECAST LOW DISSIPATED. WITHIN 300 NM NE AND E OF A LINE FROM 47N137W TO 53N140W AREA OF NW WINDS TO 25 KT. SEAS LESS THAN 8 FT. .SYNOPSIS AND FORECAST. .LOW 47N168W 1016 MB MOVING NE 10 KT. FROM 43N TO 50N BETWEEN 161W AND 170W WINDS TO 25 KT. SEAS TO 10 FT. .24 HOUR FORECAST LOW DISSIPATED. WITHIN 300 NM E AND SE OF A LINE FROM 51N162W TO 45N174W AREA OF SE TO S WINDS TO 25 KT. SEAS TO 8 FT. .48 HOUR FORECAST CONDITIONS DIMINISHED. .LOW 38N132W 1014 MB MOVING NE 10 KT. FROM 34N TO 38N BETWEEN 129W AND 133W WINDS TO 25 KT. SEAS TO 8 FT. .24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED. .LOW 47N127W 1010 MB MOVING NE 05 KT. FROM 44N TO 49N E OF 129W WINDS TO 25 KT. SEAS TO 8 FT. .24 HOUR FORECAST LOW 48N129W 1014 MB. WINDS LESS 25 KT. SEAS LESS THAN 8 FT. .48 HOUR FORECAST LOW DISSIPATED. CONDITIONS DIMINISHED. .WITHIN 90 NM N AND NE OF A LINE FROM 32N120W TO 35N123W AREA OF NW WINDS TO 25 KT. SEAS LESS THAN 8 FT. .24 HOUR FORECAST E OF A LINE FROM 31N121W TO 35N125W AREA OF NW WINDS TO 25 KT. SEAS TO 8 FT. .48 HOUR FORECAST E OF A LINE FROM 31N123W TO 36N125W AREA OF NW WINDS TO 25 KT. SEAS TO 8 FT .48 HOUR FORECAST FROM 30N TO 38N BETWEEN 151W AND 171W AREA OF E WINDS TO 25 KT. SEAS TO 8 FT. .48 HOUR FORECAST COMPLEX LOW WITH MAIN LOW 36N161E 1000 MB. WITHIN 300 NM N...600 NM NE AND 300 NM SE QUADRANTS WINDS TO 25 KT SEAS TO 8 FT. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 64N W OF ALASKA...FROM 51N TO 55N BETWEEN 144W AND 150W AND FROM 44N TO 49N BETWEEN 160W AND 169W. .24 HOUR FORECAST DENSE FOG FROM 44N TO 54N BETWEEN 157W AND 176W. .48 HOUR FORECAST DENSE FOG WITHIN AN AREA BOUNDED BY A LINE FROM 55N162W TO 50N152W TO 46N171W TO 55N162W. .VOLCANIC ASH EMISSIONS ARE CONTINUING FROM SHEVELUCH VOLCANO AT POSITION 56.4N 161.2E NEAR THE CENTER OF KAMCHATKA ISLAND. TRACE AMOUNTS OF ASHFALL MAY REACH THE SURFACE ACROSS THE WATERS ADJOINING THE ALEUTIAN ISLANDS. IF MARINERS ENCOUNTER VOLCANIC ASH OR FLOATING VOLCANIC DEBRIS PLEASE REPORT THE OBSERVATION TO THE OCEAN PREDICTION CENTER BY CALLING 301-683-1520. .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 1200 UTC MON AUG 19. 24 HOUR FORECAST VALID 1200 UTC TUE AUG 20. 48 HOUR FORECAST VALID 1200 UTC WED AUG 21. .WARNINGS. ...TROPICAL STORM WARNING... .TROPICAL STORM GILMA NEAR 15.1N 116.0W 1000 MB AT 1500 UTC AUG 19 MOVING W OR 275 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM N SEMICIRCLE...30 NM SE QUADRANT AND 0 NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 45 NM OF CENTER EXCEPT 0 NM SW QUADRANT WITH SEAS TO 15 FT. ELSEWHERE WITHIN 16N114W TO 17N115W TO 17N116W TO 15N117W TO 15N116W TO 14N115W TO 16N114W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 15N109W TO 18N116W TO 14N118W TO 12N123W TO 09N115W TO 10N111W TO 15N109W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL. .24 HOUR FORECAST TROPICAL STORM GILMA NEAR 15.8N 119.3W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM N SEMICIRCLE...50 NM SE QUADRANT AND 30 NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 90 NM NE AND 60 NM SW SEMICIRCLES WITH SEAS TO 16 FT. ELSEWHERE WITHIN 17N118W TO 18N118W TO 17N120W TO 16N120W TO 15N120W TO 15N118W TO 17N118W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 20N117W TO 17N122W TO 13N122W TO 10N117W TO 11N110W TO 13N109W TO 20N117W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL. .48 HOUR FORECAST TROPICAL STORM GILMA NEAR 17.0N 122.6W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 70 NM E SEMICIRCLE AND 60 NM W SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 120 NM NE AND 75 NM SW SEMICIRCLES WITH SEAS TO 18 FT. ELSEWHERE WITHIN 18N121W TO 18N124W TO 16N123W TO 16N121W TO 17N120W TO 18N121W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 17N116W TO 19N119W TO 20N126W TO 13N127W TO 12N124W TO 13N116W TO 17N116W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT 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. .LOW PRESSURE NEAR 10N138W 1007 MB. WITHIN 11N135W TO 13N137W TO 12N139W TO 10N140W TO 08N137W TO 09N135W TO 11N135W SW WINDS 20 TO 30 KT. SEAS 8 FT. ELSEWHERE WITHIN 15N126W TO 18N130W TO 16N135W TO 13N135W TO 10N131W TO 12N127W TO 15N126W WINDS 20 KT OR LESS. SEAS 8 FT IN NE SWELL. .24 HOUR FORECAST LOW PRESSURE...POSSIBLE TROPICAL CYCLONE...NEAR 12N136W 1006 MB. WITHIN 16N127W TO 18N135W TO 17N139W TO 13N140W TO 08N135W TO 13N126W TO 16N127W E TO SE WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. .48 HOUR FORECAST LOW PRESSURE...POSSIBLE TROPICAL CYCLONE...NEAR 13N137W 1006 MB. WITHIN 20N133W TO 22N140W TO 11N140W TO 09N135W TO 14N132W TO 20N133W E WINDS 20 TO 30 KT. SEAS 8 TO 12 FT IN E SWELL. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. CONVECTION VALID AT 1500 UTC MON AUG 19... .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... MONSOON TROUGH EXTENDS FROM 09N94W TO 13N105W...THEN CONTINUES WEST OF T.S. GILMA FROM 15N120W AND TO THE DEVELOPING LOW PRESSURE NEAR 10N138W. ASIDE FROM THE CONVECTION NEAR GILMA...SCATTERED MODERATE TO STRONG CONVECTION IS ACTIVE FROM 04N TO 08N WEST OF 84W...FROM 08N TO 11N BETWEEN 88W AND 94W...FROM 09N TO 16N BETWEEN 98W AND 107W. .FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER. NATIONAL WEATHER SERVICE HONOLULU HI NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E SYNOPSIS VALID 1200 UTC AUG 19 2024. 24 HOUR FORECAST VALID 1200 UTC AUG 20 2024. 48 HOUR FORECAST VALID 1200 UTC AUG 21 2024. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .TROUGH FROM 30N172W 26N172W 24N174W NEARLY STATIONARY. .24 HOUR FORECAST DISSIPATED. .48 HOUR FORECAST WINDS 20 TO 25 KT E OF LINE 24N140W 21N146W 14N144W 14N140W. .WINDS 20 KT OR LESS OVER REMAINDER OF AREA. .48 HOUR FORECAST SEAS 8 TO 9 FT E OF LINE 21N140W 18N150W 13N140W. .SEAS 8 FT OR LESS OVER REMAINDER OF AREA. .MONSOON TROUGH 10N140W 13N146W 13N151W THENCE ITCZ 11N160W 10N170W 06N170E 06N164E. ISOLATED MODERATE TSTMS WITHIN 250 NM ON EITHER SIDE OF ITCZ W OF 170W...AND WITHIN 150 NM S OF MONSOON TROUGH E OF 144W. .ISOLATED MODERATE TSTMS FROM 15N TO 21N W OF 173E. $$ .FORECASTER PIERCE. HONOLULU HI.