000 WTNT32 KNHC 150544 TCPAT2 BULLETIN Tropical Storm Fiona Intermediate Advisory Number 3A NWS National Hurricane Center Miami FL AL072022 200 AM AST Thu Sep 15 2022 ...TROPICAL STORM WATCHES IN EFFECT FOR PORTIONS OF THE NORTHERN LEEWARD ISLANDS... SUMMARY OF 200 AM AST...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...16.5N 52.4W ABOUT 625 MI...1005 KM E OF THE LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 14 MPH...23 KM/H MINIMUM CENTRAL PRESSURE...1002 MB...29.59 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Watch is in effect for... * Saba and St. Eustatius * St. Maarten * Antigua, Barbuda, St. Kitts, Nevis, Montserrat, 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, Puerto Rico, and Hispaniola should monitor the progress of this system, as additional tropical storm watches or warnings will likely be required for portions of these areas later today. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 200 AM AST (0600 UTC), the center of Tropical Storm Fiona was located near latitude 16.5 North, longitude 52.4 West. Fiona is moving toward the west near 14 mph (23 km/h), and this general motion is expected to continue during the next few days. On the forecast track, the center of the storm is forecast to move through the Leeward Islands late Friday and Friday night, and be near the Virgin Islands and Puerto Rico this weekend. Maximum sustained winds are near 50 mph (85 km/h) with higher gusts. Some slow strengthening is possible during the next few days. Tropical-storm-force winds extend outward up to 140 miles (220 km) east of the center. The estimated minimum central pressure is 1002 mb (29.59 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Tropical storm conditions are possible across portions of the northern Leeward Islands by Friday night, where a Tropical Storm Watch has been issued. RAINFALL: Fiona is expected to produce total rainfall accumulations of 3 to 5 inches with maximum totals of 8 inches across the northern Leeward Islands, the British and U.S. Virgin Islands, Puerto Rico and eastern Hispaniola. These rains may produce isolated flash and urban flooding, along with isolated mudslides in areas of higher terrain. SURF: Swells generated by Fiona are expected to begin affecting the northern Leeward Islands on Friday. These swells could cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 500 AM AST. $$ Forecaster Reinhart