000
FZNT02 KNHC 311604
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC FRI JUL 31 2020

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 MEXICO

SYNOPSIS VALID 1200 UTC FRI JUL 31.
24 HOUR FORECAST VALID 1200 UTC SAT AUG  1.
48 HOUR FORECAST VALID 1200 UTC SUN AUG  2.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE ISAIAS NEAR 21.7N 74.5W 992 MB AT 1500 UTC JUL 31 
MOVING NW OR 305 DEG AT 14 KT. MAXIMUM SUSTAINED WINDS 65 KT 
GUSTS 80 KT. TROPICAL STORM FORCE WINDS WITHIN 180 NM NE 
QUADRANT...90 NM SE QUADRANT...50 NM SW QUADRANT...AND 150 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 300 NM N SEMICIRCLE...180 
NM SE QUADRANT AND 90 NM SW QUADRANT WITH SEAS TO 26 FT. 
ELSEWHERE WITHIN 20N68W TO 21N77W TO 25N77W TO 24N71W TO 24N69W 
TO 20N68W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA 
WITHIN 22N65W TO 19N65W TO 18N77W TO 27N77W TO 31N71W TO 
22N65W...INCLUDING THE WINDWARD PASSAGE...WINDS 20 KT OR LESS. 
SEAS 8 TO 10 FT PRIMARILY IN SE SWELL.
.24 HOUR FORECAST HURRICANE ISAIAS NEAR 24.8N 78.0W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 KT. TROPICAL STORM FORCE WINDS 
WITHIN 120 NM NE QUADRANT...90 NM SE QUADRANT...40 NM SW 
QUADRANT...AND 110 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
210 NM NE QUADRANT...30 NM SE QUADRANT...0 NM SW QUADRANT...AND 
90 NM NW QUADRANT WITH SEAS TO 19 FT. ELSEWHERE WITHIN 25N74W TO
24N77W TO 24N80W TO 27N80W TO 27N75W TO 25N74W WINDS 20 TO 33 
KT. SEAS 9 TO 12 FT. REMAINDER OF AREA WITHIN 26N71W TO 21N71W TO
24N80W TO 31N80W TO 31N75W TO 26N71W WINDS 20 KT OR LESS. SEAS 8
TO 11 FT PRIMARILY IN E TO SE SWELL. 
.48 HOUR FORECAST HURRICANE ISAIAS NEAR 27.7N 79.8W. MAXIMUM 
SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE WINDS 
WITHIN 110 NM NE QUADRANT...90 NM SE QUADRANT...40 NM SW 
QUADRANT...AND 70 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
120 NM NE QUADRANT...90 NM SE QUADRANT...30 NM SW QUADRANT...AND 
90 NM NW QUADRANT WITH SEAS TO 26 FT. ELSEWHERE WITHIN 27N78W TO 
26N80W TO 29N81W TO 30N80W TO 29N77W TO 27N78W WINDS 20 TO 33 KT.
SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 26N76W TO 26N80W TO 
31N80W TO 29N78W TO 31N76W TO 26N76W WINDS 20 KT OR LESS. SEAS 8 
TO 11 FT PRIMARILY IN SE SWELL.
.72 HOUR FORECAST HURRICANE ISAIAS NEAR 31.6N 79.5W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. 
.96 HOUR FORECAST TROPICAL STORM ISAIAS NEAR 36.4N 76.2W. 
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. 
.120 HOUR FORECAST POST-TROPICAL EXTRATROPICAL ISAIAS NEAR 43.3N
69.0W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.

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 24 HOUR FORECAST WITHIN 17N49W TO 17N51W TO 18N52W TO
19N50W TO 17N49W WINDS 20 KT OR LESS. SEAS 8 FT IN SE SWELL.
.48 HOUR FORECAST WITHIN 19N54W TO 18N55W TO 19N59W TO 22N59W TO
21N55W TO 19N54W E TO SE WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.

.CARIBBEAN WITHIN 12N67W TO 13N70W TO 18N70W TO 18N68W TO 16N67W
TO 12N67W...INCLUDING THE MONA PASSAGE...E TO SE WINDS 20 TO 25 
KT. SEAS 8 TO 9 FT.
.24 HOUR FORECAST WITHIN 14N70W TO 13N70W TO 14N74W TO 17N74W TO
17N72W TO 14N70W WINDS 20 KT OR LESS. SEAS 8 FT IN E SWELL.
.36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

$$
.FORECASTER B REINHART. NATIONAL HURRICANE CENTER.