ZCZC MIATCPAT5 ALL TTAA00 KNHC DDHHMM BULLETIN Hurricane Tammy Advisory Number 30 NWS National Hurricane Center Miami FL AL202023 500 PM AST Wed Oct 25 2023 ...TAMMY INTERACTING WITH A NEARBY FRONT... SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...28.0N 57.9W ABOUT 510 MI...815 KM SE OF BERMUDA MAXIMUM SUSTAINED WINDS...100 MPH...155 KM/H PRESENT MOVEMENT...NE OR 45 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...969 MB...28.62 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 28.0 North, longitude 57.9 West.Tammy is moving toward the northeast near 14 mph (22 km/h). A northward turn is expected tonight, followed by a turn to the west-northwest by Friday with a decrease in forward speed. Maximum sustained winds have decreased to near 100 mph (155 km/h) with higher gusts. Steady weakening is expected for the next few days. Tammy is forecast to become a powerful extratropical cyclone by Thursday. Hurricane-force winds extend outward up to 25 miles (35 km) from the center and tropical-storm-force winds extend outward up to 175 miles (280 km). The estimated minimum central pressure is 969 mb (28.62 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Tammy will continue to affect portions of Bermuda, the northern Leeward Islands, the British and U.S. Virgin Islands, and Puerto Rico during the next couple of 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 Bucci/R. Zelinsky NNNN