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Subtropical Storm ALBERTO
ZCZC MIATCPAT1 ALL TTAA00 KNHC DDHHMM BULLETIN Subtropical Storm Alberto Advisory Number 12 NWS National Hurricane Center Miami FL AL012018 1000 PM CDT Sun May 27 2018 ...ALBERTO CONTINUES TO HEAD FOR THE NORTHERN GULF COAST... SUMMARY OF 1000 PM CDT...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...28.5N 85.8W ABOUT 205 MI...330 KM W OF TAMPA FLORIDA ABOUT 95 MI...155 KM SSW OF APALACHICOLA FLORIDA MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H PRESENT MOVEMENT...NW OR 315 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...991 MB...29.27 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Tropical Storm Warning from the Anclote River to the Suwannee River is discontinued. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Watch is in effect for... * Crystal River to Navarre Florida A Tropical Storm Warning is in effect for... * Suwannee River to the Mississippi/Alabama border A Storm Surge Watch means there is a possibility of life- threatening inundation, from rising water moving inland from the coastline, in the indicated locations. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. DISCUSSION AND OUTLOOK ---------------------- At 1000 PM CDT (0300 UTC), the center of Subtropical Storm Alberto was located near latitude 28.5 North, longitude 85.8 West. The storm is moving toward the northwest near 9 mph (15 km/h). A north- northwestward to northward motion is expected Monday through Wednesday. On the forecast track, the center of Alberto will move over the northern Gulf of Mexico overnight and cross the northern Gulf Coast in the warning area on Monday. Alberto is expected to move inland into the Tennessee Valley on Tuesday and move into the Ohio Valley on Wednesday. Maximum sustained winds are near 65 mph (100 km/h) with higher gusts. Little change in strength is expected before Alberto reaches the northern Gulf Coast. Steady weakening is expected after landfall, and Alberto is forecast to become a tropical depression Monday night or Tuesday. Winds of 40 mph extend outward up to 115 miles (185 km) from the center. The minimum central pressure reported by an Air Force Hurricane Hunter aircraft is 991 mb (29.27 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Alberto is expected to produce the following rain accumulations through Tuesday: Central Cuba...Additional 5 to 10 inches, isolated storm-totals of 20 to 25 inches. The Florida panhandle into much of Alabama and western Georgia...4 to 8 inches, isolated 12 inches. The Florida Keys and south Florida...Additional 3 to 6 inches, isolated storm totals of 10 inches. Rest of the Florida peninsula...1 to 4 inches. Rest of the Southeast and Tennessee Valley into the lower mid Atlantic from Tennessee east through the Carolinas...2 to 6 inches. Rains in Cuba could produce life-threatening flash floods and mudslides. Flooding and flash flooding are possible in the southeast United States, including Florida. WIND: Tropical storm conditions will spread across the warning area overnight and continue through Monday. STORM SURGE: The combination of storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... Crystal River to Navarre Florida...2 to 4 ft The deepest water will occur along the immediate coast. Surge- related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. TORNADOES: A couple of brief tornadoes are possible on Monday across much of Florida into central and southern Georgia, southern South Carolina, and southeastern Alabama. SURF: Swells generated by Alberto will affect the eastern and northern Gulf Coast through Tuesday. These swells are likely to cause life-threatening surf and rip current conditions. For more information, consult products from your local weather office. NEXT ADVISORY ------------- Next intermediate advisory at 100 AM CDT. Next complete advisory at 400 AM CDT. $$ Forecaster Pasch NNNN