Issued at 800 AM AST Fri Sep 16 2022
000 WTNT32 KNHC 161148 TCPAT2 BULLETIN Tropical Storm Fiona Intermediate Advisory Number 8A NWS National Hurricane Center Miami FL AL072022 800 AM AST Fri Sep 16 2022 ...TROPICAL STORM CONDITIONS AND HEAVY RAINS EXPECTED TO REACH THE LEEWARD ISLANDS LATE THIS AFTERNOON AND EVENING... SUMMARY OF 800 AM AST...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...15.8N 58.8W ABOUT 175 MI...285 KM E OF GUADELOUPE MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 15 MPH...24 KM/H MINIMUM CENTRAL PRESSURE...1004 MB...29.65 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, St. Kitts, Nevis, Montserrat, and Anguilla * Saba and St. Eustatius * St. Maarten * Guadeloupe, St. Barthelemy, and St. Martin A Tropical Storm Watch is in effect for... * Puerto Rico, including Vieques and Culebra * U.S. Virgin Islands * British Virgin Islands * Dominica A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours. Interests in Hispaniola should monitor the progress of this system. Additional watches or warnings will likely be required later today. For storm information specific to your area in the United States, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. For storm information specific to your area outside of the United States, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 800 AM AST (1200 UTC), the center of Tropical Storm Fiona was located by an Air Force Reserve Hurricane Hunter aircraft near latitude 15.8 North, longitude 58.8 West. Fiona is moving toward the west near 15 mph (24 km/h). A westward motion with a gradual decrease in forward speed is expected through Saturday night or early Sunday, followed by a turn toward the west-northwest later on Sunday. On the forecast track, the center of Fiona is expected to move across the Leeward Islands tonight and early Saturday, and move near or just south of the Virgin Islands and Puerto Rico late Saturday into Sunday. Data from a NOAA Hurricane Hunter aircraft indicate that maximum sustained winds are near 50 mph (85 km/h) with higher gusts. Some slight strengthening is forecast during the next few days. Tropical-storm-force winds extend outward up to 125 miles (205 km) from the center. The estimated minimum central pressure is 1004 mb (29.65 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Tropical Storm Fiona can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT2 and WMO header WTNT42 KNHC and on the web at hurricanes.gov/text/MIATCDAT2.shtml. WIND: Tropical storm conditions are expected across portions of the northern Leeward Islands within the warning area beginning late this afternoon or this evening. Tropical storm conditions are possible within the watch area across the Virgin Islands on Saturday and in Puerto Rico late Saturday or Saturday night. RAINFALL: Fiona is forecast to produce the following rainfall totals: Leeward Islands and Northern Windward Islands: 3 to 6 inches. British and U.S. Virgin Islands: 4 to 6 inches Puerto Rico: 4 to 8 inches with maximum totals of 12 inches, particularly across eastern and southern Puerto Rico. Eastern Dominican Republic: 6 to 10 inches with maximum totals of 16 inches possible Turks and Caicos: 4 to 8 inches These rains may produce flash and urban flooding, along with mudslides in areas of higher terrain, particularly southern and eastern Puerto Rico and the eastern Dominican Republic. STORM SURGE: Localized coastal flooding will be possible along the coasts of the U.S. Virgin Islands and Puerto Rico in areas of onshore winds Saturday into Sunday. SURF: Swells generated by Fiona are affecting the Leeward Islands, and are expected to spread westward to the Virgin Islands and Puerto Rico today and Saturday. These conditions could cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 1100 AM AST. $$ Forecaster Berg
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