High Seas Forecast
Issued by NWS
Issued by NWS
995 FZPN03 KNHC 150341 HSFEP2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 0430 UTC TUE SEP 15 2026 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 0000 UTC TUE SEP 15. 24 HOUR FORECAST VALID 0000 UTC WED SEP 16. 48 HOUR FORECAST VALID 0000 UTC THU SEP 17. .WARNINGS. ...TROPICAL STORM WARNING... .TROPICAL DEPRESSION FIFTEEN-E NEAR 16.5N 121.6W 1005 MB AT 0300 UTC SEP 15 MOVING W OR 260 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. SEAS TO 4 M WITHIN 0 NM S SEMICIRCLE...90 NM NE QUADRANT AND 60 NM NW QUADRANT. ELSEWHERE WITHIN 20N119W TO 20N123W TO 18N125W TO 15N124W TO 14N121W TO 17N117W TO 20N119W WINDS 20 TO 33 KT. SEAS 2.5 TO 4.0 M. .24 HOUR FORECAST TROPICAL STORM FIFTEEN-E NEAR 16.2N 124.7W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM OF CENTER EXCEPT 60 NM NE QUADRANT. SEAS TO 4 M WITHIN 90 NM N SEMICIRCLE. ELSEWHERE WITHIN 21N120W TO 22N130W TO 20N133W TO 18N132W TO 15N125W TO 17N120W TO 21N120W WINDS 20 TO 33 KT. SEAS 2.5 TO 4.0 M. .48 HOUR FORECAST TROPICAL STORM FIFTEEN-E NEAR 16.1N 128.8W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE. SEAS TO 4 M WITHIN 90 NM N SEMICIRCLE. ELSEWHERE WITHIN 21N124W TO 24N129W TO 23N135W TO 17N135W TO 15N125W TO 21N124W WINDS 20 TO 33 KT. SEAS 2.5 TO 4.0 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. .NEWLY DOWNGRADED TROPICAL DEPRESSION NORBERT NEAR 20.2N 140.5W 1006 MB AT 0300 UTC SEP 15 MOVING WNW OR 285 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. SEAS TO 4 M WITHIN 0 NM S SEMICIRCLE...90 NM NE QUADRANT AND 75 NM NW QUADRANT. ELSEWHERE OVER FORECAST WATERS E OF 140W WITHIN 26N134W TO 27N140W TO 18N140W TO 20N134W TO 26N134W E WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M. .24 HOUR FORECAST POST-TROPICAL REMNANT LOW NORBERT W OF AREA NEAR 20.7N 145.0W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. ELSEWHERE OVER FORECAST WATERS E OF 140W WITHIN 23N138W TO 26N140W TO 20N140W TO 21N138W TO 23N138W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN E SWELL. .36 HOUR FORECAST POST-TROPICAL REMNANT LOW NORBERT W OF AREA NEAR 20.8N 147.7W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. OVER FORECAST WATERS E OF 140W CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .48 HOUR FORECAST...NORBERT DISSIPATED. FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE AND INTENSITY. .WITHIN 16N94.5W TO 16N95W TO 16N95.5W TO 14.5N95.5W TO 14.5N94.5W TO 15N94.5W TO 16N94.5W...INCLUDING THE GULF OF TEHUANTEPEC... N TO NE WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. .24 HOUR FORECAST LITTLE CHANGE. .48 HOUR FORECAST WITHIN 15N95W TO 16N95W TO 16N96W TO 14N96W TO 12N97W TO 13N95W TO 15N95W...INCLUDING THE GULF OF TEHUANTEPEC... N TO NE WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M. .WITHIN 11N86W TO 11N88W TO 11N89W TO 10N90W TO 10N88W TO 11N86W...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. .WITHIN 04N102W TO 04N106W TO 00N120W TO 03.4S120W TO 03.4S94W TO 04N102W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S TO SW SWELL. .24 HOUR FORECAST LITTLE CHANGE. .48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M. .WITHIN 30N120W TO 30N125W TO 27N125W TO 27N122W TO 30N120W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N SWELL. .24 HOUR FORECAST LITTLE CHANGE. .36 HOUR FORECAST CONDITIONS IMPROVE. 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 0300 UTC TUE SEP 15... .T.D. NORBERT...SCATTERED MODERATE CONVECTION BETWEEN 120-150 NM IN THE NE QUADRANT. .T.D. FIFTEEN-E...NUMEROUS MODERATE TO ISOLATED STRONG WITHIN 60-240 NM IN THE SE SEMICIRCLE. .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... MONSOON TROUGH FROM 10N85W TO 07N115W TO 14N130W TO BEYOND 12N140W. SCATTERED MODERATE FROM 05N TO 11N BETWEEN 80W AND 90W...FROM 05N TO 12N BETWEEN 100W AND 105W...AND FROM 03N TO 07N BETWEEN 115W AND 120W. $$ .FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.