000 WTNT34 KNHC 231157 TCPAT4 BULLETIN TROPICAL STORM DANNY INTERMEDIATE ADVISORY NUMBER 20A NWS NATIONAL HURRICANE CENTER MIAMI FL AL042015 800 AM AST SUN AUG 23 2015 ...TROPICAL STORM CONDITIONS EXPECTED OVER PORTIONS OF THE LEEWARD ISLANDS TONIGHT... SUMMARY OF 800 AM AST...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...15.7N 56.7W ABOUT 315 MI...510 KM E OF GUADELOUPE ABOUT 350 MI...565 KM ESE OF ANTIGUA MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 15 MPH...24 KM/H MINIMUM CENTRAL PRESSURE...1003 MB...29.62 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Antigua, Barbuda, Montserrat, St. Kitts, Nevis, and Anguilla A Tropical Storm Watch is in effect for... * Saba and St. Eustatius * St. Maarten * Guadeloupe, St. Barthelemy, and St. Martin A Tropical Storm Warning means that tropical storm conditions are expected, in this case within the next 24 hours. Interests elsewhere in the U. S. and British Virgin Islands, Puerto Rico, and the Dominican Republic should monitor the progress of Danny. Additional watches or warnings could be required for portions of these areas later this morning. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ At 800 AM AST (1200 UTC), the center of Tropical Storm Danny was located by Hurricane Hunter aircraft near latitude 15.7 North, longitude 56.7 West. Danny is moving toward the west near 15 mph (24 km/h) and this general motion is expected to continue through tonight. A turn toward the west-northwest is forecast on Monday. On the forecast track, the center of Danny is expected to be near the Leeward Islands late tonight or Monday morning. Maximum sustained winds are near 50 mph (85 km/h) with higher gusts. Slow weakening is forecast during the next 48 hours. Tropical-storm-force winds extend outward up to 60 miles (95 km) from the center. The minimum central pressure reported by an Air Force Hurricane Hunter aircraft was 1003 mb (29.62 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Tropical-storm-force winds are expected within portions of the warning area by late tonight. RAINFALL: Danny is expected to produce 2 to 4 inches of rain over the Leeward Islands through Monday. NEXT ADVISORY ------------- Next complete advisory at 1100 AM AST. $$ Forecaster Pasch