519 FZPN03 KNHC 232125 HSFEP2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 2230 UTC SUN AUG 23 2026 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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. SECURITE E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE EQUATOR E OF 120W SYNOPSIS VALID 1800 UTC SUN AUG 23. 24 HOUR FORECAST VALID 1800 UTC MON AUG 24. 48 HOUR FORECAST VALID 1800 UTC TUE AUG 25. .WARNINGS. ...HURRICANE WARNING... .TROPICAL STORM ISELLE NEAR 16.9N 115.1W 1001 MB AT 2100 UTC AUG 23 MOVING NW OR 315 DEG AT 14 KT. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 100 NM E SEMICIRCLE...110 NM SW QUADRANT AND 0 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 90 NM E SEMICIRCLE...45 NM SW QUADRANT AND 0 NM NW QUADRANT WITH SEAS TO 5.0 M. ELSEWHERE WITHIN 180 NM OF CENTER...EXCEPT 120 NM SW QUADRANT WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0 M. REMAINDER OF THE AREA FROM 10.5N TO 13N BETWEEN 112W AND 118W S TO SW WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M. .24 HOUR FORECAST TROPICAL STORM ISELLE NEAR 19.6N 117.8W. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE WINDS WITHIN 120 NM NE QUADRANT...130 NM SE QUADRANT...90 NM SW QUADRANT...AND 60 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 180 NM E SEMICIRCLE...120 NM SW QUADRANT AND 90 NM NW QUADRANT WITH SEAS TO 6.0 M. ELSEWHERE WITHIN 210 NM E SEMICIRCLE AND 150 NM W SEMICIRCLE OF CENTER WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0 M. REMAINDER OF THE AREA FROM 12N TO 23N BETWEEN 111W AND 121W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL. .36 HOUR FORECAST HURRICANE ISELLE NEAR 20.8N 119.4W. MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. .48 HOUR FORECAST HURRICANE ISELLE NEAR 21.4N 121.1W. MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS WITHIN 130 NM NE QUADRANT...110 NM SE QUADRANT...60 NM SW QUADRANT...AND 90 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 210 NM E SEMICIRCLE...AND 120 NM W SEMICIRCLE OF CENTER WITH SEAS TO 7.0 M. ELSEWHERE WITHIN 240 NM E SEMICIRCLE AND 180 NM W SEMICIRCLE OF CENTER WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0 M. REMAINDER OF THE AREA FROM 14N TO 27N BETWEEN 113W AND 125W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 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. .N OF 14.5N BETWEEN 94.5W AND 95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS TO 2.5 M. .12 HOUR FORECAST N OF 13.5N BETWEEN 94.5W AND 95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS 2.5 M. .24 HOUR FORECAST N OF 15N BETWEEN 94.5W AND 95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS LESS 2.5 M. .48 HOUR FORECAST N OF 14N BETWEEN 94.5W AND 95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS 2.5 M .FROM 10N TO 11.5N E OF 90W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS TO 2.5 M. .12 HOUR FORECAST 10N TO 12N E OF 90W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M. .24 HOUR FORECAST FROM 10N TO 11.5N E OF 90W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS TO 2.5 M. .48 HOUR FORECAST LITTLE CHANGE. .GULF OF CALIFORNIA N OF 27N SE TO S WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .12 HOUR FORECAST 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 SUN AUG 23... .T.S. ISELLE...NUMEROUS MODERATE TO STRONG WITHIN 180 NM SW SEMICIRCLE. .INVEST EP91...SCATTERED MODERATE TO ISOLATED STRONG FROM 10N TO 12.5N BETWEEN 120W AND 126W. .TROPICAL WAVE ALONG 87W...SCATTERED MODERATE ISOLATED STRONG FROM 03N TO 10N BETWEEN 87W AND 92W. .TROPICAL WAVE ALONG 101W...SCATTERED MODERATE ISOLATED STRONG FROM 10N TO 18N BETWEEN 92W AND 106W. .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... THE MONSOON TROUGH EXTENDS FROM 09N84W TO 06N95W TO 11N110W THEN CONTINUES SW OF ISELLE FROM 12N119W TO 08N130W TO BEYOND 07N140W. ASIDE FROM THE CONVECTION RELATED TO THE TROPICAL WAVES...INVEST AREA EP91 AND T.S. ISELLE DESCRIBED ABOVE...SCATTERED MODERATE TO ISOLATED STRONG CONVECTION CAN BE FOUND FROM FROM 03N TO 12N W OF 126W. $$ .FORECASTER GR. NATIONAL HURRICANE CENTER.  941 FZNT01 KWBC 232146 HSFAT1 HIGH SEAS FORECAST FOR METAREA IV NWS OCEAN PREDICTION CENTER WASHINGTON DC 2230 UTC SUN AUG 23 2026 CCODE/1:31:04:01:00/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 INFORMATION ON ATLANTIC ICEBERGS SEE INFORMATION FROM NORTH ATLANTIC ICE SERVICE AT HTTPS://OCEAN.WEATHER.GOV/ATL_TAB.PHP (ALL LOWERCASE). FOR ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM). SECURITE NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS SYNOPSIS VALID 1800 UTC AUG 23. 24 HOUR FORECAST VALID 1800 UTC AUG 24. 48 HOUR FORECAST VALID 1800 UTC AUG 25. .WARNINGS. ...GALE WARNING... .LOW 64N38W 1000 MB MOVING SE 10 KT. WITHIN 60 NM NW OF A LINE FROM 65N35W TO 63N39W WINDS 30 TO 40 KT. SEAS 3.5 TO 5.5 M. ELSEWHERE N OF 60N E OF 41W WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M. .24 HOUR FORECAST LOW JUST E OF AREA NEAR 60N33W 1003 MB. BETWEEN 150 NM AND 300 NM W SEMICIRCLE WINDS 25 TO 35 KT. SEAS 3 TO 5 M. ELSEWHERE FROM 48N TO 65N E OF 45W WINDS TO 25 KT. SEAS 2.5 TO 3.5 M. .48 HOUR FORECAST LOW WELL E OF AREA. FROM 50N TO 56N E OF 38W WINDS LESS THAN 25 KT. SEAS TO 3 M. ...GALE WARNING... .24 HOUR FORECAST LOW 35N62W 1015 MB. FROM 31N TO 37N BETWEEN 57W AND 63W WINDS TO 25 KT. SEAS TO 3 M. .48 HOUR FORECAST 43N58W 1009 MB. WITHIN 240 NM SE QUADRANT WINDS 25 TO 35 KT. SEAS 3 TO 4.5 M. ELSEWHERE FROM 37N TO 46N BETWEEN 52W AND 60W WINDS TO 25 KT. SEAS 2.5 TO 4 M. .SYNOPSIS AND FORECAST. .LOW 59N40W 999 MB MOVING E 20 KT. WITHIN 480 NM SW OF A LINE FROM 58N40W TO 64N51W WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M. .24 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS MERGED WITH LOW 60N33W DESCRIBED ABOVE. .48 HOUR FORECAST LOW 61N64W 1007 MB. FROM 64N TO 65N W OF 58W WINDS TO 25 KT. SEAS LESS THAN 2.5 M. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 41N TO 48N W OF 63W...AND N OF 64N BETWEEN 37W AND 40W. .24 HOUR FORECAST DENSE FOG FROM 46N TO 51N BETWEEN 55W AND 67W. .48 HOUR FORECAST DENSE FOG FROM 46N TO 65N BETWEEN A LINE FROM 46N42W TO 64N60W AND A LINE FROM 46N60W TO 65N70W. .FORECASTER POCHE. OCEAN PREDICTION CENTER. NWS NATIONAL HURRICANE CENTER MIAMI FL ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND GULF OF AMERICA SYNOPSIS VALID 1800 UTC SUN AUG 23. 24 HOUR FORECAST VALID 1800 UTC MON AUG 24. 48 HOUR FORECAST VALID 1800 UTC TUE AUG 25. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .ATLC NEW LOW PRESSURE NEAR 29N60W 1016 MB. WITHIN 31N58W TO 31N59W TO 29N59W TO 28N58W TO 29N58W TO 29N57W TO 31N58W SE TO S WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .24 HOUR FORECAST LOW PRESSURE...POSSIBLE TROPICAL CYCLONE...MOVED WELL N OF AREA. OVER FORECAST WATERS...CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .ATLC 24 HOUR FORECAST WITHIN 21N71W TO 21N72W TO 21N73W TO 20N73W TO 20N71W TO 20N70W TO 21N71W E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .48 HOUR FORECAST LITTLE CHANGE. .CARIBBEAN WITHIN 13N72W TO 12N73W TO 12N71W TO 11N70W TO 13N72W...INCLUDING THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .24 HOUR FORECAST WITHIN 13N70W TO 12N72W TO 13N74W TO 12N73W TO 12N72W TO 11N70W TO 13N70W...INCLUDING THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 30 KT. SEAS TO 2.5 M. .48 HOUR FORECAST WITHIN 14N72W TO 14N75W TO 13N75W TO 12N77W TO 12N69W TO 14N72W...INCLUDING THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 30 KT. SEAS TO 2.5 M. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .FORECASTER KONARIK. NATIONAL HURRICANE CENTER. $$  043 FZPN01 KWBC 232150 HSFEP1 HIGH SEAS FORECAST NWS OCEAN PREDICTION CENTER WASHINGTON DC 2230 UTC SUN AUG 23 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 AUG 23. 24 HOUR FORECAST VALID 1800 UTC AUG 24. 48 HOUR FORECAST VALID 1800 UTC AUG 25. .WARNINGS. ...TROPICAL STORM WARNING... .TROPICAL STORM LALA NEAR 32.5N 174.3W 988 MB AT 2100 UTC AUG 23 MOVING NW OR 305 DEG AT 4 KT. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 150 NM N SEMICIRCLE...AND 130 NM SE AND 100 NM SW QUADRANTS. SEAS TO 4 M WITHIN 270 NM NE...180 NM SE...210 NM SW...AND 300 NM NW QUADRANTS WITH SEAS TO 7 M. ELSEWHERE FROM 30N TO 38N W OF 167W WINDS 20 TO 33 KT. SEAS 2.5 TO 4 M. .24 HOUR FORECAST TROPICAL STORM LALA NEAR 33.6N 175.3W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 125 NM NE...105 NM SE...80 NM SW...AND 110 NM NW QUADRANTS. SEAS 4 M OR GREATER WITHIN 180 NM N AND 150 NM S SEMICIRCLES WITH SEAS TO 6.5 M. ELSEWHERE FROM 30N TO 40N W OF 168W WINDS 20 TO 33 KT. SEAS 2.5 TO 4 M. .48 HOUR FORECAST TROPICAL STORM LALA NEAR 34.8N 177.1W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM NE..70 NM SW...AND 100 NM SE AND NW QUADRANTS. SEAS 4 M OR GREATER WTHIN 180 NM N AND 120 NM S SEMICIRCLES WITH SEAS TO 6.5 M. ELSEWHERE FROM 31N TO 41N W OF 170W WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M. ...GALE WARNING... .LOW W OF THE AREA 60N177E 993 MB MOVING NE 20 KT. IN THE BERING SEA N OF 55N BETWEEN 171W AND 179W WINDS 25 TO 35 KT. SEAS 3 TO 4 M. ELSEWHERE W OF A LINE FROM 64N172W TO 62N168W TO 57N169W TO 49N179W WINDS 20 TO 30 KT. SEAS TO 3 M. .24 HOUR FORECAST LOW NW OF THE AREA 68N170W 986 MB. IN THE BERING SEA N OF 62N W OF ALASKA WINDS 20 TO 30 KT. SEAS TO 3.5 M. ELSEWHERE N OF 61N W OF 161W...AND WITHIN 300 NM N AND NW OF A LINE FROM 57N160W TO 48N178W WINDS TO 25 KT. SEAS TO 3 M. .48 HOUR FORECAST LOW WELL N OF THE AREA WITH A NEW LOW TO FORM NEAR 58N152W 1013 MB. WITHIN 540 NM W AND SW...AND 420 NM NW QUADRANTS WINDS TO 25 KT. SEAS TO 2.5 M. .SYNOPSIS AND FORECAST. .LOW 55N145W 1004 MB MOVING SE 10 KT. WITHIN 240 NM SW...AND 480 NM W AND NW QUADRANTS WINDS TO 25 KT. SEAS TO 2.5 M. .24 HOUR FORECAST LOW 52N140W 1010 MB. N OF 52N E OF 133W...AND WITHIN 240 NM W SEMICIRCLE WINDS TO 25 KT. SEAS TO 2.5 M. .48 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 46N134W DESCRIBED BELOW. .COMPLEX LOW WITH FIRST CENTER 42N143W 1014 MB MOVING NE 10 KT AND A SECOND CENTER 44N146W 1016 MB MOVING E 10 KT. FROM 40N TO 46N BETWEEN 140W AND 150W WINDS TO 25 KT. SEAS TO 2.5 M. .24 HOUR FORECAST COMBINED LOW 45N139W 1014 MB. FROM 40N TO 48N BETWEEN 137W AND 147W WINDS TO 25 KT. SEAS TO 2.5 M. .48 HOUR FORECAST LOW 46N134W 1010 MB. WITHIN 120 NM E SEMICIRCLE...AND WITHIN 540 NM SW AND 420 NM NW QUADRANTS WINDS TO 25 KT. SEAS TO 3 M. .FROM 34N TO 42N BETWEEN 121W AND 126W N TO NW WINDS TO 25 KT. SEAS TO 2.5 M. .24 HOUR FORECAST FROM 40N TO 47N E OF 127W N WINDS TO 25 KT. SEAS TO 2.5 M. .48 HOUR FORECAST CONDITIONS DIMINISHED. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM IN THE BERING SEA N OF 52N W OF 171W...AND FROM 48N TO 54N BETWEEN 133W AND 140W. .24 HOUR FORECAST DENSE FOG FROM 50N TO 61N W OF 160W...AND WITHIN 120 NM E OF A LINE FROM 48N139W TO 55N133W. .48 HOUR FORECAST DENSE FOG FROM 45 TO 50N BETWEEN 133W AND 136W...AND WITHIN 180 NM N OF A LINE FROM 48N180W TO 57N157W. .FORECASTER MILLS. 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 1800 UTC SUN AUG 23. 24 HOUR FORECAST VALID 1800 UTC MON AUG 24. 48 HOUR FORECAST VALID 1800 UTC TUE AUG 25. .WARNINGS. ...HURRICANE WARNING... .TROPICAL STORM ISELLE NEAR 16.9N 115.1W 1001 MB AT 2100 UTC AUG 23 MOVING NW OR 315 DEG AT 14 KT. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 100 NM E SEMICIRCLE...110 NM SW QUADRANT AND 0 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 90 NM E SEMICIRCLE...45 NM SW QUADRANT AND 0 NM NW QUADRANT WITH SEAS TO 5.0 M. ELSEWHERE WITHIN 180 NM OF CENTER...EXCEPT 120 NM SW QUADRANT WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0 M. REMAINDER OF THE AREA FROM 10.5N TO 13N BETWEEN 112W AND 118W S TO SW WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M. .24 HOUR FORECAST TROPICAL STORM ISELLE NEAR 19.6N 117.8W. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE WINDS WITHIN 120 NM NE QUADRANT...130 NM SE QUADRANT...90 NM SW QUADRANT...AND 60 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 180 NM E SEMICIRCLE...120 NM SW QUADRANT AND 90 NM NW QUADRANT WITH SEAS TO 6.0 M. ELSEWHERE WITHIN 210 NM E SEMICIRCLE AND 150 NM W SEMICIRCLE OF CENTER WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0 M. REMAINDER OF THE AREA FROM 12N TO 23N BETWEEN 111W AND 121W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL. .36 HOUR FORECAST HURRICANE ISELLE NEAR 20.8N 119.4W. MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. .48 HOUR FORECAST HURRICANE ISELLE NEAR 21.4N 121.1W. MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS WITHIN 130 NM NE QUADRANT...110 NM SE QUADRANT...60 NM SW QUADRANT...AND 90 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 210 NM E SEMICIRCLE...AND 120 NM W SEMICIRCLE OF CENTER WITH SEAS TO 7.0 M. ELSEWHERE WITHIN 240 NM E SEMICIRCLE AND 180 NM W SEMICIRCLE OF CENTER WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0 M. REMAINDER OF THE AREA FROM 14N TO 27N BETWEEN 113W AND 125W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 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. .N OF 14.5N BETWEEN 94.5W AND 95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS TO 2.5 M. .12 HOUR FORECAST N OF 13.5N BETWEEN 94.5W AND 95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS 2.5 M. .24 HOUR FORECAST N OF 15N BETWEEN 94.5W AND 95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS LESS 2.5 M. .48 HOUR FORECAST N OF 14N BETWEEN 94.5W AND 95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS 2.5 M .FROM 10N TO 11.5N E OF 90W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS TO 2.5 M. .12 HOUR FORECAST 10N TO 12N E OF 90W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M. .24 HOUR FORECAST FROM 10N TO 11.5N E OF 90W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS TO 2.5 M. .48 HOUR FORECAST LITTLE CHANGE. .GULF OF CALIFORNIA N OF 27N SE TO S WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .12 HOUR FORECAST 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 SUN AUG 23... .T.S. ISELLE...NUMEROUS MODERATE TO STRONG WITHIN 180 NM SW SEMICIRCLE. .INVEST EP91...SCATTERED MODERATE TO ISOLATED STRONG FROM 10N TO 12.5N BETWEEN 120W AND 126W..TROPICAL WAVE ALONG 87W...SCATTERED MODERATE ISOLATED STRONG FROM 03N TO 10N BETWEEN 87W AND 92W. .TROPICAL WAVE ALONG 101W...SCATTERED MODERATE ISOLATED STRONG FROM 10N TO 18N BETWEEN 92W AND 106W. .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... THE MONSOON TROUGH EXTENDS FROM 09N84W TO 06N95W TO 11N110W THEN CONTINUES SW OF ISELLE FROM 12N119W TO 08N130W TO BEYOND 07N140W. ASIDE FROM THE CONVECTION RELATED TO THE TROPICAL WAVES...INVEST AREA EP91 AND T.S. ISELLE DESCRIBED ABOVE...SCATTERED MODERATE TO ISOLATED STRONG CONVECTION CAN BE FOUND FROM FROM 03N TO 12N W OF 126W. $$ .FORECASTER GR. NATIONAL HURRICANE CENTER.  134 FZPN01 KWBC 232152 CCA HSFEP1 HIGH SEAS FORECAST NWS OCEAN PREDICTION CENTER WASHINGTON DC 2230 UTC SUN AUG 23 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 AUG 23. 24 HOUR FORECAST VALID 1800 UTC AUG 24. 48 HOUR FORECAST VALID 1800 UTC AUG 25. .WARNINGS. ...TROPICAL STORM WARNING... .TROPICAL STORM LALA NEAR 32.5N 174.3W 988 MB AT 2100 UTC AUG 23 MOVING NW OR 305 DEG AT 4 KT. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 150 NM N SEMICIRCLE...AND 130 NM SE AND 100 NM SW QUADRANTS. SEAS TO 4 M WITHIN 270 NM NE...180 NM SE...210 NM SW...AND 300 NM NW QUADRANTS WITH SEAS TO 7 M. ELSEWHERE FROM 30N TO 38N W OF 167W WINDS 20 TO 33 KT. SEAS 2.5 TO 4 M. .24 HOUR FORECAST TROPICAL STORM LALA NEAR 33.6N 175.3W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 125 NM NE...105 NM SE...80 NM SW...AND 110 NM NW QUADRANTS. SEAS 4 M OR GREATER WITHIN 180 NM N AND 150 NM S SEMICIRCLES WITH SEAS TO 6.5 M. ELSEWHERE FROM 30N TO 40N W OF 168W WINDS 20 TO 33 KT. SEAS 2.5 TO 4 M. .48 HOUR FORECAST TROPICAL STORM LALA NEAR 34.8N 177.1W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM NE..70 NM SW...AND 100 NM SE AND NW QUADRANTS. SEAS 4 M OR GREATER WTHIN 180 NM N AND 120 NM S SEMICIRCLES WITH SEAS TO 6.5 M. ELSEWHERE FROM 31N TO 41N W OF 170W WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M. ...GALE WARNING... .LOW W OF THE AREA 60N177E 993 MB MOVING NE 20 KT. IN THE BERING SEA N OF 55N BETWEEN 171W AND 179W WINDS 25 TO 35 KT. SEAS 3 TO 4 M. ELSEWHERE W OF A LINE FROM 64N172W TO 62N168W TO 57N169W TO 49N179W WINDS 20 TO 30 KT. SEAS TO 3 M. .24 HOUR FORECAST LOW NW OF THE AREA 68N170W 986 MB. IN THE BERING SEA N OF 62N W OF ALASKA WINDS 20 TO 30 KT. SEAS TO 3.5 M. ELSEWHERE N OF 61N W OF 161W...AND WITHIN 300 NM N AND NW OF A LINE FROM 57N160W TO 48N178W WINDS TO 25 KT. SEAS TO 3 M. .48 HOUR FORECAST LOW WELL N OF THE AREA WITH A NEW LOW TO FORM NEAR 58N152W 1013 MB. WITHIN 540 NM W AND SW...AND 420 NM NW QUADRANTS WINDS TO 25 KT. SEAS TO 2.5 M. .SYNOPSIS AND FORECAST. .LOW 55N145W 1004 MB MOVING SE 10 KT. WITHIN 240 NM SW...AND 480 NM W AND NW QUADRANTS WINDS TO 25 KT. SEAS TO 2.5 M. .24 HOUR FORECAST LOW 52N140W 1010 MB. N OF 52N E OF 133W...AND WITHIN 240 NM W SEMICIRCLE WINDS TO 25 KT. SEAS TO 2.5 M. .48 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 46N134W DESCRIBED BELOW. .COMPLEX LOW WITH FIRST CENTER 42N143W 1014 MB MOVING NE 10 KT AND A SECOND CENTER 44N146W 1016 MB MOVING E 10 KT. FROM 40N TO 46N BETWEEN 140W AND 150W WINDS TO 25 KT. SEAS TO 2.5 M. .24 HOUR FORECAST COMBINED LOW 45N139W 1014 MB. FROM 40N TO 48N BETWEEN 137W AND 147W WINDS TO 25 KT. SEAS TO 2.5 M. .48 HOUR FORECAST LOW 46N134W 1010 MB. WITHIN 120 NM E SEMICIRCLE...AND WITHIN 540 NM SW AND 420 NM NW QUADRANTS WINDS TO 25 KT. SEAS TO 3 M. .FROM 34N TO 42N BETWEEN 121W AND 126W N TO NW WINDS TO 25 KT. SEAS TO 2.5 M. .24 HOUR FORECAST FROM 40N TO 47N E OF 127W N WINDS TO 25 KT. SEAS TO 2.5 M. .48 HOUR FORECAST CONDITIONS DIMINISHED. .DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM IN THE BERING SEA N OF 52N W OF 171W...AND FROM 48N TO 54N BETWEEN 133W AND 140W. .24 HOUR FORECAST DENSE FOG FROM 50N TO 61N W OF 160W...AND WITHIN 120 NM E OF A LINE FROM 48N139W TO 55N133W. .48 HOUR FORECAST DENSE FOG FROM 45 TO 50N BETWEEN 133W AND 136W...AND WITHIN 180 NM N OF A LINE FROM 48N180W TO 57N157W. .FORECASTER MILLS. 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 1800 UTC SUN AUG 23. 24 HOUR FORECAST VALID 1800 UTC MON AUG 24. 48 HOUR FORECAST VALID 1800 UTC TUE AUG 25. .WARNINGS. ...HURRICANE WARNING... .TROPICAL STORM ISELLE NEAR 16.9N 115.1W 1001 MB AT 2100 UTC AUG 23 MOVING NW OR 315 DEG AT 14 KT. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 100 NM E SEMICIRCLE...110 NM SW QUADRANT AND 0 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 90 NM E SEMICIRCLE...45 NM SW QUADRANT AND 0 NM NW QUADRANT WITH SEAS TO 5.0 M. ELSEWHERE WITHIN 180 NM OF CENTER...EXCEPT 120 NM SW QUADRANT WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0 M. REMAINDER OF THE AREA FROM 10.5N TO 13N BETWEEN 112W AND 118W S TO SW WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M. .24 HOUR FORECAST TROPICAL STORM ISELLE NEAR 19.6N 117.8W. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE WINDS WITHIN 120 NM NE QUADRANT...130 NM SE QUADRANT...90 NM SW QUADRANT...AND 60 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 180 NM E SEMICIRCLE...120 NM SW QUADRANT AND 90 NM NW QUADRANT WITH SEAS TO 6.0 M. ELSEWHERE WITHIN 210 NM E SEMICIRCLE AND 150 NM W SEMICIRCLE OF CENTER WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0 M. REMAINDER OF THE AREA FROM 12N TO 23N BETWEEN 111W AND 121W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL. .36 HOUR FORECAST HURRICANE ISELLE NEAR 20.8N 119.4W. MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. .48 HOUR FORECAST HURRICANE ISELLE NEAR 21.4N 121.1W. MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS WITHIN 130 NM NE QUADRANT...110 NM SE QUADRANT...60 NM SW QUADRANT...AND 90 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 210 NM E SEMICIRCLE...AND 120 NM W SEMICIRCLE OF CENTER WITH SEAS TO 7.0 M. ELSEWHERE WITHIN 240 NM E SEMICIRCLE AND 180 NM W SEMICIRCLE OF CENTER WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0 M. REMAINDER OF THE AREA FROM 14N TO 27N BETWEEN 113W AND 125W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 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. .N OF 14.5N BETWEEN 94.5W AND 95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS TO 2.5 M. .12 HOUR FORECAST N OF 13.5N BETWEEN 94.5W AND 95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS 2.5 M. .24 HOUR FORECAST N OF 15N BETWEEN 94.5W AND 95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS LESS 2.5 M. .48 HOUR FORECAST N OF 14N BETWEEN 94.5W AND 95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS 2.5 M .FROM 10N TO 11.5N E OF 90W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS TO 2.5 M. .12 HOUR FORECAST 10N TO 12N E OF 90W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M. .24 HOUR FORECAST FROM 10N TO 11.5N E OF 90W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS TO 2.5 M. .48 HOUR FORECAST LITTLE CHANGE. .GULF OF CALIFORNIA N OF 27N SE TO S WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .12 HOUR FORECAST 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 SUN AUG 23... .T.S. ISELLE...NUMEROUS MODERATE TO STRONG WITHIN 180 NM SW SEMICIRCLE. .INVEST EP91...SCATTERED MODERATE TO ISOLATED STRONG FROM 10N TO 12.5N BETWEEN 120W AND 126W. .TROPICAL WAVE ALONG 87W...SCATTERED MODERATE ISOLATED STRONG FROM 03N TO 10N BETWEEN 87W AND 92W. .TROPICAL WAVE ALONG 101W...SCATTERED MODERATE ISOLATED STRONG FROM 10N TO 18N BETWEEN 92W AND 106W. .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... THE MONSOON TROUGH EXTENDS FROM 09N84W TO 06N95W TO 11N110W THEN CONTINUES SW OF ISELLE FROM 12N119W TO 08N130W TO BEYOND 07N140W. ASIDE FROM THE CONVECTION RELATED TO THE TROPICAL WAVES...INVEST AREA EP91 AND T.S. ISELLE DESCRIBED ABOVE...SCATTERED MODERATE TO ISOLATED STRONG CONVECTION CAN BE FOUND FROM FROM 03N TO 12N W OF 126W. $$ .FORECASTER GR. NATIONAL HURRICANE CENTER.