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Tropical Storm Harvey Intermediate Advisory Number 3A
NWS National Hurricane Center Miami FL       AL092017
200 AM AST Fri Aug 18 2017

...WEATHER DETERIORATING IN THE WINDWARD ISLANDS AS HARVEY
APPROACHES...


SUMMARY OF 200 AM AST...0600 UTC...INFORMATION
----------------------------------------------
LOCATION...13.0N 58.1W
ABOUT 95 MI...155 KM E OF BARBADOS
ABOUT 200 MI...325 KM ESE OF ST. LUCIA
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 17 MPH...28 KM/H
MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES


WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Warning is in effect for...
* Martinique
* St. Lucia
* Barbados
* St. Vincent and the Grenadines

A Tropical Storm Watch is in effect for...
* Dominica

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case within
6 to 18 hours.

A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area, in this case within 6 to 18 hours.

For storm information specific to your area, please monitor products
issued by your national meteorological service.


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 200 AM AST (0600 UTC), the center of Tropical Storm Harvey was
located near latitude 13.0 North, longitude 58.1 West.  Harvey is
moving toward the west near 17 mph (28 km/h), and a continued
westward motion with a slight increase in forward speed is expected
over the next couple of days.  On the forecast track, Harvey should
move through the Windward Islands and into the eastern Caribbean Sea
later today.

Maximum sustained winds remain near 40 mph (65 km/h) with higher
gusts. Slow strengthening is possible during the next 48 hours.

Tropical-storm-force winds extend outward up to 60 miles (95 km)
mainly to the north of the center.

The estimated minimum central pressure is 1005 mb (29.68 inches).


HAZARDS AFFECTING LAND
----------------------
WIND:  Tropical storm conditions are expected to first reach the
Lesser Antilles within the warning area later this morning, making
outside preparations difficult or dangerous.  Tropical storm
conditions are possible in the watch area later today.

RAINFALL:  Harvey is expected to produce rainfall totals of
2 to 4 inches across portions of the Windward Islands from
Martinique southward to Grenada.   These rains could cause
life-threatening flash floods and mudslides.


NEXT ADVISORY
-------------
Next complete advisory at 500 AM AST.

$$
Forecaster Avila

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