121
FZNT02 KNHC 211006
HSFAT2
HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC THU AUG 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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
ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF AMERICA
SYNOPSIS VALID 0600 UTC THU AUG 21.
24 HOUR FORECAST VALID 0600 UTC FRI AUG 22.
48 HOUR FORECAST VALID 0600 UTC SAT AUG 23.
.WARNINGS.
..ATLC TROPICAL STORM WARNING
.HURRICANE ERIN WELL N OF AREA NEAR 34.2N 72.1W 945 MB AT 0900
UTC AUG 21 MOVING NNE OR 020 DEG AT 15 KT. MAXIMUM SUSTAINED
WINDS 90 KT GUSTS 110 KT. WITHIN 31N69.5W TO 31N75W TO 30.5N74W
TO 30N71.5W TO 30.5N70W TO 31N69.5W SW TO W WINDS 30 TO 40 KT.
SEAS 6 TO 8 M. ELSEWHERE WITHIN 31N66W TO 30N73W TO 31N78W TO
28N75W TO 27N69W TO 31N66W SW WINDS 25 TO 30 KT. SEAS 5 TO 6 M.
REMAINDER OF AREA WITHIN 31N62W TO 31N81W TO 27N80W TO 24N76W TO
24N69W TO 27N64W TO 31N62W...INCLUDING ATLC EXPOSURES...WINDS 20
KT OR LESS. SEAS 2.5 TO 4 M IN NW TO N SWELL...EXCEPT IN N TO NE
SWELL W OF 74W.
.24 HOUR FORECAST WITHIN 31N62W TO 31N69W TO 30N68W TO 30N65W TO
30N62W TO 31N62W SW WINDS 20 TO 25 KT. SEAS 3.5 TO 5 M. WITHIN
31N59W TO 30N68W TO 31N69W TO 31N80W TO 26N73W TO 29N61W TO
31N59W WINDS 20 KT OR LESS. SEAS 3 TO 4 M IN MIXED SWELL.
.48 HOUR FORECAST WITHIN 31N52W TO 31N79W TO 26N74W TO 25N64W TO
29N53W TO 31N52W...INCLUDING ATLC EXPOSURES...WINDS 20 KT OR
LESS. SEAS 2.5 TO 3 M IN NW TO N SWELL...EXCEPT IN N TO NE SWELL
W OF 72W.
.SYNOPSIS AND FORECAST.
.ATLC 36 HOUR FORECAST ATLC AND CARIBBEAN TROPICAL WAVE FROM
22N59W TO 16N62W TO 09N65W. WITHIN 19.5N58W TO 20N61W TO 18N61W
TO 17N60W TO 18N58W TO 19.5N58W E TO SE WINDS 20 TO 25 KT. SEAS
TO 2.5 M.
.48 HOUR FORECAST LOW PRES NEAR 23N62W 1013 MB WITH TROUGH TO
22N63W TO 18N64W. WITHIN 23N58W TO 23N62W TO 21N61W TO 21N59W
TO 23N58W SE TO S WINDS 20 TO 30 KT. SEAS 2.5 TO 3 M.
.CARIBBEAN WITHIN 14N70W TO 15N72W TO 15N75W TO 11N76W TO 12N72W
TO 11N70W TO 14N70W...INCLUDING THE GULF OF VENEZUELA...E WINDS
20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST WITHIN 13N71W TO 13N73W TO 13N76W TO 11N76W TO
12N73W TO 11N71W TO 13N71W...INCLUDING THE GULF OF VENEZUELA...
NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.CARIBBEAN 18 HOUR FORECAST WITHIN 17N84W TO 18N86W TO 17N87W TO
16N86W TO 17N85W TO 17N84W E WINDS 20 TO 25 KT OR LESS. SEAS
LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.42 HOUR FORECAST WITHIN 17N84W TO 18N86W TO 17N87W TO 16N86W TO
17N85W TO 17N84W E WINDS 20 TO 25 KT OR LESS. SEAS LESS THAN 2.5
M.
.48 HOUR FORECAST LITTLE CHANGE.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.
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