BRIDGETOWN, Barbados – At 5 AM Aug 18 the NHC had Tropical Storm Harvey at 30 MI / 45 KM ESE of Barbados. At the time of this post (6 AM), birds are chirping and outside is bathed in a yellow-ish colour with very little wind. During the night, from 12 AM Aug 18 onward, lots of thunder, lightning and rain.
NHC Public Advisory #4 as at 8 AM AST
WTNT34 KNHC 180841
Tropical Storm Harvey Advisory Number 4
NWS National Hurricane Center Miami FL AL092017
500 AM AST Fri Aug 18 2017
…HARVEY DRENCHING THE WINDWARD ISLANDS…
SUMMARY OF 500 AM AST…0900 UTC…INFORMATION
ABOUT 30 MI…45 KM ESE OF BARBADOS
ABOUT 135 MI…220 KM ESE OF ST. LUCIA
MAXIMUM SUSTAINED WINDS…40 MPH…65 KM/H
PRESENT MOVEMENT…W OR 270 DEGREES AT 18 MPH…30 KM/H
MINIMUM CENTRAL PRESSURE…1004 MB…29.65 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY:
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Tropical Storm Warning is in effect for…
* St. Lucia
* St. Vincent and the Grenadines
A Tropical Storm Watch is in effect for…
For storm information specific to your area, please monitor
products issued by your national meteorological service.
DISCUSSION AND 48-HOUR OUTLOOK
At 500 AM AST (0900 UTC), the center of Tropical Storm Harvey was
located near latitude 13.1 North, longitude 59.1 West. Harvey is
moving toward the west near 18 mph (30 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
Maximum sustained winds remain near 40 mph (65 km/h) with higher
gusts. Some slight strengthening is possible during the next 48
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 1004 mb (29.65 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 intermediate advisory at 800 AM AST.
Next complete advisory at 1100 AM AST.