Issued at 500 PM AST Sun Oct 22 2023
000 WTNT35 KNHC 222034 TCPAT5 BULLETIN Hurricane Tammy Advisory Number 18 NWS National Hurricane Center Miami FL AL202023 500 PM AST Sun Oct 22 2023 ...HEAVY RAINS LINGER ACROSS THE LEEWARD ISLANDS... SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...19.9N 63.4W ABOUT 120 MI...190 KM N OF ANGUILLA MAXIMUM SUSTAINED WINDS...85 MPH...140 KM/H PRESENT MOVEMENT...NW OR 325 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...988 MB...29.18 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 500 PM AST (2100 UTC), the center of Hurricane Tammy was located near latitude 19.9 North, longitude 63.4 West. Tammy is moving toward the northwest near 9 mph (15 km/h). A turn toward the north is expected late tonight, followed by a north-northeast or northeast motion on Monday and Tuesday. Maximum sustained winds are near 85 mph (140 km/h) with higher gusts. Some slight strengthening is possible during the next few days. Hurricane-force winds extend outward up to 25 miles (35 km) from the center and tropical-storm-force winds extend outward up to 115 miles (185 km). The estimated minimum central pressure is 988 mb (29.18 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Tammy can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT5 and WMO header WTNT45 KNHC and on the web at hurricanes.gov/text/MIATCDAT5.shtml RAINFALL: Tammy is expected to produce the following storm total rainfall: Leeward Islands: 4 to 8 inches with storm total maximum amounts of 12 inches Martinique and Dominica: Additional 2 to 4 inches, storm total maximum 6 inches British and U.S. Virgin Islands into eastern Puerto Rico: 1 to 2 inches with maximum storm total amounts of 4 inches These rains may produce isolated flash and urban flooding, along with isolated mudslides in areas of higher terrain. SURF: Swells generated by Tammy will continue to affect portions of the Lesser Antilles during the next few days. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 1100 PM AST. $$ Forecaster Cangialosi
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