TROPICAL STORM ERIKA INTERMEDIATE ADVISORY NUMBER 4A
NWS NATIONAL HURRICANE CENTER MIAMI FL AL052015
800 PM AST TUE AUG 25 2015
AIR FORCE AND NOAA PLANES FIND ERIKA POORLY ORGANIZED…
SUMMARY OF 800 PM AST…0000 UTC…INFORMATION
ABOUT 610 MI…983 KM ESE OF ST. KITTS AND NEVIS
MAXIMUM SUSTAINED WINDS…40 MPH…65 KM/H
PRESENT MOVEMENT…W OR 280 DEGREES AT 20 MPH…31 KM/H
MINIMUM CENTRAL PRESSURE…1006 MB…29.71 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY: None.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Tropical Storm Watch is in effect for…
* Antigua and Barbuda
* St. Kitts and Nevis
* Saba, St. Eustatius, and St. Maarten
* Guadeloupe, St. Martin, and St. Barthelemy
A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours.
For storm information specific to your area, please monitor products issued by your national meteorological service.
DISCUSSION AND 48-HOUR OUTLOOK
At 800 PM AST (0000 UTC), the center of Tropical Storm Erika was located near latitude 15.8 North, longitude 53.6 West. Erika is moving toward the west near 20 mph (31 km/h), and a west-northwestward motion at a slightly slower forward speed is expected over the next 48 hours. On the forecast track, the center of Erika will be near the Leeward Islands Wednesday night and early Thursday.
Maximum sustained winds remain near 40 mph (65 km/h) with higher gusts. Some slow strengthening is possible during the next 48 hours.
Tropical storm force winds extend outward up to 80 miles (130 km) to the east of the center.
The minimum central pressure reported by NOAA and Air Force
Hurricane Hunter aircraft was 1006 mb (29.71 inches).
HAZARDS AFFECTING LAND
WIND: Tropical storm conditions are possible within the watch area by Wednesday night or early Thursday.
RAINFALL: Erika is expected to produce total rain accumulations of 2 to 4 inches over many of the Leeward Islands through Thursday.