000
FZNT02 KNHC 012137
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC SAT AUG 1 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC SAT AUG 1.
24 HOUR FORECAST VALID 1800 UTC SUN AUG  2.
48 HOUR FORECAST VALID 1800 UTC MON AUG  3.

.WARNINGS.

...ATLC HURRICANE WARNING...
.TROPICAL STORM ISAIAS NEAR 25.1N 78.7W 992 MB AT 2100 UTC AUG 
01 MOVING NW OR 315 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 60 KT 
GUSTS 75 KT. TROPICAL STORM FORCE WINDS WITHIN 90 NM N 
SEMICIRCLE...50 NM SE QUADRANT AND 0 NM SW QUADRANT. SEAS 12 FT 
OR GREATER WITHIN 150 NM NE QUADRANT...45 NM SE QUADRANT...0 NM 
SW QUADRANT...AND 90 NM NW QUADRANT WITH SEAS TO 18 FT. 
ELSEWHERE WITHIN 24N74W TO 25N77W TO 24N81W TO 28N79W TO 27N75W 
TO 24N74W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA 
WITHIN 26N72W TO 23N73W TO 24N81W TO 31N80W TO 31N76W TO 26N72W 
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN SE SWELL. 
.12 HOUR FORECAST HURRICANE ISAIAS NEAR 26.1N 79.4W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS
WITHIN 100 NM N SEMICIRCLE...70 NM SE QUADRANT...AND 30 NM SW 
QUADRANT. LITTLE CHANGE IN RADIUS OF 12 FT SEAS.
.24 HOUR FORECAST HURRICANE ISAIAS NEAR 27.4N 80.1W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS 
WITHIN 100 NM N SEMICIRCLE...70 NM SE QUADRANT AND 30 NM SW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 NM NE QUADRANT...75 
NM SE QUADRANT...15 NM SW QUADRANT...AND 120 NM NW QUADRANT WITH 
SEAS TO 28 FT. ELSEWHERE WITHIN 28N75W TO 26N76W TO 25N80W TO 
31N81W TO 31N77W TO 28N75W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.36 HOUR FORECAST TROPICAL STORM ISAIAS NEAR 28.8N 80.7W. 
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. LITTLE CHANGE IN
RADIUS OF TROPICAL STORM FORCE WINDS AND 12 FT SEAS.
.48 HOUR FORECAST TROPICAL STORM ISAIAS NEAR 30.7N 80.6W. 
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE 
WINDS WITHIN 80 NM NW AND SE QUADRANTS...100 NM NE QUADRANT AND 
30 NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 120 NM E
SEMICIRCLE...45 NM SW QUADRANT...AND 90 NM NW QUADRANT WITH SEAS
TO 28 FT. ELSEWHERE WITHIN 28N77W TO 28N80W TO 31N81W TO 31N76W 
TO 28N77W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.72 HOUR FORECAST TROPICAL STORM ISAIAS INLAND NEAR 37.4N 76.3W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL EXTRATROPICAL ISAIAS NEAR 45.4N 
68.0W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
.120 HOUR FORECAST POST-TROPICAL EXTRATROPICAL ISAIAS NEAR 50.7N
57.9W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 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 TROUGH FROM 22N58W TO 18N61W. WITHIN 
19N56W TO 19N58W TO 20N59W TO 21N59W TO 20N56W TO 19N56W WINDS 20
KT OR LESS. SEAS 8 FT IN E SWELL.
.48 HOUR FORECAST TROUGH FROM 26N65W TO 21N66W. WITHIN 22N63W TO
23N67W TO 25N68W TO 26N66W TO 24N62W TO 22N63W E TO SE WINDS 20 
TO 25 KT. SEAS 8 TO 10 FT.

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

$$
.FORECASTER B REINHART. NATIONAL HURRICANE CENTER.