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TROPICAL DEPRESSION THIRTEEN FORECAST/ADVISORY NUMBER   4
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL132020
2100 UTC THU AUG 20 2020
 
CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...
 
A TROPICAL STORM WATCH HAS BEEN ISSUED FOR PUERTO RICO...VIEQUES...
CULEBRA AND THE U.S. VIRGIN ISLANDS.
 
THE GOVERNMENT OF ANTIGUA HAS ISSUED A TROPICAL STORM WATCH FOR THE
BRITISH VIRGIN ISLANDS.
 
THE GOVERNMENT OF FRANCE HAS ISSUED A TROPICAL STORM WATCH FOR ST.
MARTIN AND ST. BARTHELEMY.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
 
A TROPICAL STORM WATCH IS IN EFFECT FOR...
* PUERTO RICO...VIEQUES AND CULEBRA
* U.S. VIRGIN ISLANDS
* BRITISH VIRGIN ISLANDS
* SABA AND ST. EUSTATIUS
* ST. MAARTEN
* ST. MARTIN AND ST. BARTHELEMY
* ANTIGUA...BARBUDA...ST. KITTS...NEVIS...AND ANGUILLA
 
A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS.
 
INTERESTS ELSEWHERE IN THE NORTHERN LEEWARD ISLANDS...THE VIRGIN
ISLANDS...AND PUERTO RICO SHOULD MONITOR THE PROGRESS OF THIS
SYSTEM...AS ADDITIONAL TROPICAL STORM WATCHES OR WARNINGS WILL
BE REQUIRED FOR PORTIONS OF THOSE AREAS LATER TODAY.
 
TROPICAL DEPRESSION CENTER LOCATED NEAR 16.7N  53.9W AT 20/2100Z
POSITION ACCURATE WITHIN  40 NM
 
PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 290 DEGREES AT  18 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE 1008 MB
MAX SUSTAINED WINDS  30 KT WITH GUSTS TO  40 KT.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT.  RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.
 
REPEAT...CENTER LOCATED NEAR 16.7N  53.9W AT 20/2100Z
AT 20/1800Z CENTER WAS LOCATED NEAR 16.6N  53.4W
 
FORECAST VALID 21/0600Z 17.5N  57.2W
MAX WIND  30 KT...GUSTS  40 KT.
 
FORECAST VALID 21/1800Z 18.3N  60.5W
MAX WIND  35 KT...GUSTS  45 KT.
34 KT... 40NE  40SE   0SW  40NW.
 
FORECAST VALID 22/0600Z 19.1N  63.5W
MAX WIND  40 KT...GUSTS  50 KT.
34 KT... 70NE  60SE   0SW  50NW.
 
FORECAST VALID 22/1800Z 20.0N  66.7W
MAX WIND  45 KT...GUSTS  55 KT.
34 KT... 90NE  70SE  20SW  70NW.
 
FORECAST VALID 23/0600Z 20.9N  70.4W
MAX WIND  50 KT...GUSTS  60 KT.
50 KT... 40NE   0SE   0SW  30NW.
34 KT...110NE  90SE  40SW  90NW.
 
FORECAST VALID 23/1800Z 22.2N  74.1W
MAX WIND  60 KT...GUSTS  75 KT.
50 KT... 50NE  30SE   0SW  30NW.
34 KT...110NE  90SE  40SW  90NW.
 
EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM
ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY
 
OUTLOOK VALID 24/1800Z 25.1N  80.4W
MAX WIND  65 KT...GUSTS  80 KT.
 
OUTLOOK VALID 25/1800Z 28.3N  84.2W
MAX WIND  65 KT...GUSTS  80 KT.
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 16.7N  53.9W
 
INTERMEDIATE PUBLIC ADVISORY...WTNT33 KNHC/MIATCPAT3...AT 21/0000Z
 
NEXT ADVISORY AT 21/0300Z
 
$$
FORECASTER BROWN
 
 
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