000
FZNT02 KNHC 181512
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC MON MAY 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 MON MAY 18.
24 HOUR FORECAST VALID 1200 UTC TUE MAY 19.
48 HOUR FORECAST VALID 1200 UTC WED MAY 20.

.WARNINGS.

...TROPICAL STORM WARNING...


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 TROPICAL STORM ARTHUR NEAR 35.1N 75.2W 996 MB AT 1500 UTC 
MAY 18 MOVING NNE OR 030 DEG AT 14 KT. MAXIMUM SUSTAINED WINDS 45
KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM W 
SEMICIRCLE...110 NM NE QUADRANT AND 80 NM SE QUADRANT. SEAS 12 FT
OR GREATER WITHIN 120 NM NE QUADRANT...90 NM SE QUADRANT...30 NM
SW QUADRANT...AND 60 NM NW QUADRANT WITH SEAS TO 22 FT. 
.24 HOUR FORECAST POST-TROPICAL EXTRATROPICAL ARTHUR NEAR 37.2N 
70.1W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. 
.48 HOUR FORECAST POST-TROPICAL EXTRATROPICAL ARTHUR NEAR 35.5N 
65.8W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. 
.72 HOUR FORECAST POST-TROPICAL EXTRATROPICAL ARTHUR NEAR 34.0N 
65.0W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. 
.96 HOUR FORECAST POST-TROPICAL REMNANT LOW ARTHUR NEAR 32.0N 
64.0W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.120 HOUR FORECAST...DISSIPATED.

.CARIBBEAN WITHIN 11N67W TO 12N72W TO 12N76W TO 16N73W TO 14N68W
TO 11N67W E WINDS 20 TO 30 KT. SEAS 8 TO 10 FT. ELSEWHERE WITHIN
14N75W TO 11N75W TO 13N79W TO 16N76W TO 16N73W TO 14N75W WINDS 
20 KT OR LESS. SEAS 8 TO 9 FT IN NE TO E SWELL. 
.24 HOUR FORECAST WITHIN 12N70W TO 12N76W TO 14N75W TO 15N73W TO
13N70W TO 12N70W E WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. ELSEWHERE 
WITHIN 13N69W TO 14N75W TO 11N75W TO 14N79W TO 16N73W TO 13N69W 
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NE TO E SWELL. 
.42 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

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

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.