BULLETIN
Tropical Depression Thirteen Advisory Number 4
NWS National Hurricane Center Miami FL AL132020
500 PM AST Thu Aug 20 2020
…DEPRESSION HAS NOT STRENGTHENED…
…TROPICAL STORM WATCH ISSUED FOR THE VIRGIN ISLANDS AND PUERTO
RICO…
SUMMARY OF 500 PM AST…2100 UTC…INFORMATION
———————————————-
LOCATION…16.7N 53.9W
ABOUT 615 MI…990 KM E OF THE NORTHERN LEEWARD ISLANDS
MAXIMUM SUSTAINED WINDS…35 MPH…55 KM/H
PRESENT MOVEMENT…WNW OR 290 DEGREES AT 21 MPH…33 KM/H
MINIMUM CENTRAL PRESSURE…1008 MB…29.77 INCHES
WATCHES AND WARNINGS
——————–
CHANGES 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.
For storm information specific to your area, please monitor
products issued by your national meteorological service.
DISCUSSION AND OUTLOOK
———————-
At 500 PM AST (2100 UTC), the center of Tropical Depression Thirteen
was located near latitude 16.7 North, longitude 53.9 West. The
depression is moving toward the west-northwest near 21 mph (33 km/h)
and this motion is expected to continue for the next few days. On
the forecast track, the depression is expected to move near or north
of the northern Leeward Islands by late Friday, near or north of
the Virgin Islands and Puerto Rico on Saturday, and near or north
of Hispaniola Saturday night.
Maximum sustained winds are near 35 mph (55 km/h) with higher gusts.
Gradual strengthening is forecast, and the depression is forecast
to become a tropical storm on Friday.
The estimated minimum central pressure is 1008 mb (29.77 inches).
HAZARDS AFFECTING LAND
———————-
RAINFALL: The depression is expected to produce 1 to 3 inches of
rain with isolated maximum totals of 5 inches over the northern
Leeward Islands, and maximum totals of 3 to 6 inches over Puerto
Rico and the Virgin Islands through Sunday.
WIND: Tropical storm conditions are possible within the watch
area late Friday and Saturday.
NEXT ADVISORY
————-
Next intermediate advisory at 800 PM AST.
Next complete advisory at 1100 PM AST.
