


High Seas Forecast
Issued by NWS
Issued by NWS
244 FZPN03 KNHC 291521 HSFEP2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 1630 UTC SUN JUN 29 2025 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 SUN JUN 29. 24 HOUR FORECAST VALID 1200 UTC MON JUN 30. 48 HOUR FORECAST VALID 1200 UTC TUE JUL 01. .WARNINGS. ...HURRICANE WARNING... .TROPICAL STORM FLOSSIE NEAR 13.4N 99.9W 1005 MB AT 1500 UTC JUN 29 MOVING W OR 280 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM W SEMICIRCLE...90 NM NE QUADRANT AND 20 NM SE QUADRANT. SEAS 4 M OR GREATER WITHIN 30 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE WITH SEAS TO 4.5 M. ELSEWHERE WITHIN 60 NM OF CENTER...EXCEPT 120 NM NE QUADRANT WINDS 20 TO 33 KT. SEAS 2.5 TO 4 M. .24 HOUR FORECAST TROPICAL STORM FLOSSIE NEAR 15.2N 102.1W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 90 NM NE QUADRANT...50 NM SE QUADRANT...20 NM SW QUADRANT...AND 40 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 60 NM OF CENTER...EXCEPT 120 NM NE QUADRANT WITH SEAS TO 6 M. ELSEWHERE WITHIN 90 NM OF CENTER...EXCEPT 150 NM NE QUADRANT WINDS 20 TO 33 KT. SEAS 2.5 TO 4 M. .36 HOUR FORECAST HURRICANE FLOSSIE NEAR 16.3N 103.7W. MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. .48 HOUR FORECAST HURRICANE FLOSSIE NEAR 17.5N 105.4W. MAXIMUM SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE WINDS WITHIN 120 NM NE QUADRANT...80 NM SE QUADRANT...50 NM SW QUADRANT...AND 60 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 90 NM OF CENTER...EXCEPT 150 NM NE QUADRANT WITH SEAS TO 8 M. ELSEWHERE OVER FORECAST WATERS WITHIN 120 NM OF CENTER...EXCEPT 150 NM NE QUADRANT WINDS 20 TO 33 KT. SEAS 2.5 TO 4 M. 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. .FROM 10N TO 11.5N E OF 89W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .24 HOUR FORECAST LITTLE CHANGE. .48 HOUR FORECAST LITTLE CHANGE. .S OF 02S BETWEEN 82W AND 115W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN SE TO S SWELL. .24 HOUR FORECAST S OF 01S BETWEEN 82W AND 110W...AND S OF 00N BETWEEN 110W AND 120W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN SE TO S SWELL. .48 HOUR FORECAST S OF A LINE FROM 03.4S90TO 02N100W TO 04N110W TO 03N120W TO 00N128W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S SWELL. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. CONVECTION VALID AT 1500 UTC SUN JUN 29... .T.S. FLOSSIE...NUMEROUS MODERATE TO STRONG FROM 08N TO 16.5N BETWEEN 96W AND 103.5W .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... THE MONSOON TROUGH EXTENDS FROM 10N85W TO 11N95W, THEN CONTINUES W OF T.S. FLOSSIE FROM 13N110W TO 08N133W. THE ITCZ STRETCHES FROM 08N133W TO BEYOND 07N140W. ASIDE FROM THE CONVECTION RELATED TO T.S. FLOSSIE...SCATTERED MODERATE TO ISOLATED STRONG CONVECTION IS OBSERVED FROM 06N TO 12W BETWEEN 120W AND 130W. $$ .FORECASTER GR. NATIONAL HURRICANE CENTER.