High Seas Forecast
Issued by NWS
Issued by NWS
021 FZPN03 KNHC 041533 HSFEP2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 1630 UTC SAT OCT 04 2025 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 1200 UTC SAT OCT 04. 24 HOUR FORECAST VALID 1200 UTC SUN OCT 05. 48 HOUR FORECAST VALID 1200 UTC MON OCT 06. .WARNINGS. ...TROPICAL STORM WARNING... .TROPICAL STORM OCTAVE NEAR 14.6N 123.6W 1000 MB AT 1500 UTC OCT 04 MOVING NW OR 310 DEG AT 6 KT. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM OF CENTER EXCEPT 30 NM SW QUADRANT. SEAS 4 M OR GREATER WITHIN 90 NM N SEMICIRCLE AND 75 NM S SEMICIRCLE WITH SEAS TO 6 M. ELSEWHERE WITHIN 120 NM OF CENTER... EXCEPT 90 NM SW QUADRANT WINDS 20 TO 33 KT. SEAS 3 TO 5 FT. REMAINDER OF THE AREA FROM 10N TO 20N BETWEEN 116W AND 128W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN MIXED SWELL. .24 HOUR FORECAST TROPICAL STORM OCTAVE NEAR 15.5N 124.1W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM N SEMICIRCLE AND 40 NM S SEMICIRCLE. SEAS 4 M OR GREATER WITHIN 90 NM OF CENTER...EXCEPT 60 NM SW QUADRANT WITH SEAS TO 6 M. ELSEWHERE WITHIN 120 NM OF CENTER...EXCEPT 90 NM SW QUADRANT WINDS 20 TO 33 KT. SEAS 3 TO 5 FT. REMAINDER OF THE AREA FROM 12N TO 19N BETWEEN 121W AND 129W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN MIXED SWELL. .48 HOUR FORECAST TROPICAL STORM OCTAVE NEAR 16.0N 122.6W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 30 NM S SEMICIRCLE...50 NM NE QUADRANT AND 40 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 90 NM OF CENTER...EXCEPT 60 NM SW QUADRANT WITH SEAS TO 5 M. ELSEWHERE WITHIN 120 NM OF CENTER... EXCEPT 90 NM SW QUADRANT WINDS 20 TO 33 KT. SEAS 3 TO 5 FT. REMAINDER OF THE AREA FROM 13N TO 19N BETWEEN 121W AND 128W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 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. ...GALE WARNING... .LOW PRESS 15N105.5W 1005 MB. WITHIN 180 NE QUADRANT WINDS 20 TO 30 KT. SEAS 3 TO 4 FT. FROM 09N TO 14N BETWEEN 101W AND 110W SW TO W WINDS 20 TO 25 KT. SEAS 2.5 TO 3 M. .24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 16N106W 1000 MN. WITHIN 90 NM OF CENTER...EXCEPT 75 NM NW QUADRANT WINDS 30 TO 40 KT. SEAS 3 TO 5 FT. ELSEWHERE FROM 09N TO 17N BETWEEN 102W AND 110W WINDS 20 TO 30 KT. SEAS 3 TO 4 FT. REMAINDER OF THE AREA FROM 08N TO 18N BETWEEN 101W AND 112W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN MIXED SWELL. .48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 17N107W 998 MN. WITHIN 135 NM OF CENTER...EXCEPT 180 NM NE QUADRANT WINDS 30 TO 45 KT. SEAS 4 TO 6 M. ELSEWHERE FROM 12N TO 19N BETWEEN 103W AND 111W WINDS 20 TO 30 KT. SEAS 3 TO 4 FT. REMAINDER OF THE AREA FROM 08N TO 21N BETWEEN 100W AND 112W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN MIXED SWELL. .SYNOPSIS AND FORECAST. .N OF 20N BETWEEN 115W AND 140W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW SWELL. .24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .N OF 15N BETWEEN 94.5W AND 95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE 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 1500 UTC SAT OCT 4... .TROPICAL STORM OCTAVE...NUMEROUS MODERATE TO STRONG WITHIN 120 NM SW SEMICIRCLE. .LOW PRES (EP99)...NUMEROUS MODERATE TO STRONG FROM 14N TO 18N BETWEEN 104W AND 108W. .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... THE MONSOON TROUGH EXTENDS FROM 09N83W TO 12N95W TO LOW PRESSURE LOCATED NEAR 15N105.5W...THEN RESUMES SW OF OCTAVE FROM 11N126W TO 09N140W. ASIDE FROM THE CONVECTION ASSOCIATED WITH OCTAVE AND EP99...SCATTERED MODERATE TO ISOLATED STRONG CONVECTION IS NOTED FROM 07N TO 13N BETWEEN 90W AND 100W. .FORECASTER GR. NATIONAL HURRICANE CENTER.