509
FZNT02 KNHC 181610
HSFAT2
HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC MON AUG 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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
ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF AMERICA
SYNOPSIS VALID 1200 UTC MON AUG 18.
24 HOUR FORECAST VALID 1200 UTC TUE AUG 19.
48 HOUR FORECAST VALID 1200 UTC WED AUG 20.
.WARNINGS.
..HURRICANE WARNING
.HURRICANE ERIN NEAR 23.1N 70.8W 935 MB AT 1500 UTC AUG 18
MOVING WNW OR 300 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 120 KT
GUSTS 145 KT. TROPICAL STORM FORCE WINDS WITHIN 200 NM E
SEMICIRCLE...120 NM SW QUADRANT AND 170 NM NW QUADRANT. SEAS 4 M
OR GREATER WITHIN 300 NM NW AND SE QUADRANTS...360 NM NE QUADRANT
AND 180 NM SW QUADRANT WITH SEAS TO 14.5 M. ELSEWHERE WITHIN
26N66W TO 27N71W TO 24N75W TO 20N72W TO 18N67W TO 20N65W TO
26N66W...INCLUDING ATLANTIC EXPOSURES...WINDS 20 TO 33 KT. SEAS
4.0 TO 7.5 M. REMAINDER OF AREA WITHIN 31N68W TO 29N76W TO
25N76W TO 27N69W TO 20N65W TO 23N62W TO 31N68W...INCLUDING
ATLANTIC EXPOSURES...WINDS 20 KT OR LESS. SEAS 2.5 TO 5.0 M IN
MIXED SWELL.
.24 HOUR FORECAST HURRICANE ERIN NEAR 25.7N 72.5W. MAXIMUM
SUSTAINED WINDS 115 KT GUSTS 140 KT. TROPICAL STORM FORCE WINDS
WITHIN 200 NM E SEMICIRCLE...140 NM SW QUADRANT AND 180 NM NW
QUADRANT. SEAS 4 M OR GREATER WITHIN 400 NM NE QUADRANT...300 NM
SE QUADRANT...250 NM SW QUADRANT AND 360 NM NW QUADRANT WITH SEAS
TO 14.5 M. ELSEWHERE WITHIN 27N67W TO 30N71W TO 28N76W TO 24N76W
TO 21N74W TO 21N69W TO 27N67W...INCLUDING ATLANTIC
EXPOSURES...WINDS 20 TO 33 KT. SEAS 4.0 TO 8.0 M. REMAINDER OF
AREA WITHIN 31N63W TO 29N68W TO 31N81W TO 26N78W TO 20N68W TO
27N63W TO 31N63W...INCLUDING ATLANTIC EXPOSURES...WINDS 20 KT OR
LESS. SEAS 2.5 TO 5.5 M IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE ERIN NEAR 29.5N 73.5W. MAXIMUM
SUSTAINED WINDS 105 KT GUSTS 130 KT. TROPICAL STORM FORCE WINDS
WITHIN 180 NM W SEMICIRCLE...210 NM NE QUADRANT AND 220 NM SE
QUADRANT. SEAS 4 M OR GREATER WITHIN 450 NM NE QUADRANT...360 NM
SE AND SW QUADRANTS...AND 420 NM NW QUADRANT WITH SEAS TO 16 M.
ELSEWHERE WITHIN 31N67W TO 31N78W TO 27N77W TO 24N72W TO 26N68W
TO 31N67W WINDS 20 TO 33 KT. SEAS 4.0 TO 8.0 M. REMAINDER OF AREA
WITHIN 31N63W TO 31N81W TO 28N81W TO 23N74W TO 22N70W TO 24N65W
TO 31N63W...INCLUDING ATLANTIC EXPOSURES...WINDS 20 KT OR LESS.
SEAS 2.5 TO 5.0 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.
.SYNOPSIS AND FORECAST.
.ATLC WITHIN 31N45.5W TO 31N50.5W TO 30.5N50W TO 30.5N49W TO
30.5N45.5W TO 31N45.5W WINDS 20 KT OR LESS. SEAS 2.5 M IN NW TO
N SWELL.
.24 HOUR FORECAST WITHIN 31N42.5W TO 31N45W TO 30.5N44.5W TO
30.5N43.5W TO 31N42.5W WINDS 20 KT OR LESS. SEAS 2.5 M IN NW
SWELL.
.30 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.
.FORECASTER ADAMS. NATIONAL HURRICANE CENTER.
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