


High Seas Forecast
Issued by NWS
Issued by NWS
773 FZPN03 KNHC 181523 HSFEP2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 1630 UTC SAT OCT 18 2025 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 18. 24 HOUR FORECAST VALID 1200 UTC SUN OCT 19. 48 HOUR FORECAST VALID 1200 UTC MON OCT 20. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .WITHIN 27N133W TO 30N129W TO 30N140W TO 17N140W TO 23N137W TO 27N133W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW SWELL. .24 HOUR FORECAST WITHIN 30N121W TO 30N138W TO 25N139W TO 24N134W TO 26N127W TO 30N121W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW SWELL. .48 HOUR FORECAST WITHIN 30N131W TO 30N140W TO 28N140W TO 29N134W TO 30N131W AND WITHIN 11N136W TO 12N137W TO 12N140W TO 09N140W TO 09N138W TO 10N136W TO 11N136W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW TO N SWELL. .36 HOUR FORECAST WITHIN 12N119W TO 12N120W TO 12N122W TO 10N122W TO 10N121W TO 10N120W TO 12N119W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW SWELL. .48 HOUR FORECAST WITHIN 15N122W TO 14N124W TO 11N124W TO 10N122W TO 11N120W TO 15N122W NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M. .48 HOUR FORECAST WITHIN 16N95W TO 16N96W TO 15N96W TO 15N95W TO 16N95W...INCLUDING THE GULF OF TEHUANTEPEC...NE WINDS 20 TO 25 KT. 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 18... .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... MONSOON TROUGH FROM THE COAST OF PANAMA NEAR 09N84W TO 1008 MB LOW PRES NEAR 13N99W TO 09N135W. ITCZ CONTINUES FROM THAT POINT TO BEYOND 08N140W. SCATTERED MODERATE TO ISOLATED STRONG N OF 09N BETWEEN 87W AND 105W. SIMILAR ACTIVITY FROM 07N TO 12N AND W OF 125W. $$ .FORECASTER ERA. NATIONAL HURRICANE CENTER.