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Subtropical Storm Alberto Public Advisory Number 12A
2018-05-28 07:30:54| National Hurricane Center (Atlantic)
Issued at 100 AM CDT Mon May 28 2018 000 WTNT31 KNHC 280530 TCPAT1 BULLETIN Subtropical Storm Alberto Intermediate Advisory Number 12A NWS National Hurricane Center Miami FL AL012018 100 AM CDT Mon May 28 2018 ...ALBERTO MAINTAINING ITS STRENGTH AS IT APPROACHES THE FLORIDA PANHANDLE... SUMMARY OF 100 AM CDT...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...28.6N 86.1W ABOUT 115 MI...185 KM SSW OF PANAMA CITY FLORIDA MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H PRESENT MOVEMENT...NW OR 315 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...990 MB...29.23 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. 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 100 AM CDT (0600 UTC), the center of Subtropical Storm Alberto was located near latitude 28.6 North, longitude 86.1 West. The storm is moving toward the northwest near 9 mph (15 km/h). A north- northwestward to northward motion is expected during the next few days. On the forecast track, the center of Alberto will cross the northern Gulf Coast in the warning area by this afternoon. The weakening system is forecast to move well inland into the Tennessee Valley on Tuesday and into the Ohio Valley and Great Lakes region on Wednesday and Thursday. Maximum sustained winds remain near 65 mph (100 km/h) with higher gusts. Little change in strength is expected before Alberto reaches the northern Gulf Coast later today. Steady weakening is forecast after landfall, and Alberto will likely become a subtropical depression tonight or early Tuesday and degenerate into a remnant low by Tuesday afternoon. Winds of 40 mph extend outward up to 115 miles (185 km) from the center. NOAA buoy 42039 in the northeastern Gulf of Mexico recently reported a sustained wind of 49 mph (79 km/h) with a gust to 61 mph (98 km/h). The estimated minimum central pressure based on aircraft and buoy observations is 990 mb (29.23 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 throughout the day. 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 today across much of Florida, central and southern Georgia, southern South Carolina, and southeastern Alabama. SURF: Swells generated by Alberto will continue to 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 complete advisory at 400 AM CDT. $$ Forecaster Cangialosi
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