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McCormick and Smeltzer were reporting on the fringes of the large system whose core made landfall on the northern Gulf Coast.
Alberto had weakened to a subtropical depression by 11 p.m. ET Monday and was centered about 50 miles west-northwest of Dothan, Alabama, according to the National Hurricane Center in Miami. The storm had maximum sustained winds of 35 mph.
Though the storm had weakened, forecasters warned it was capable of potentially life-threatening flash floods as it spreads over Alabama and large areas of Georgia, Tennessee and the Carolinas.
"The main threat will be heavy rain and flooding along its path," Weather Channel meteorologist Kevin Roth said early Tuesday. "It's moving across the South — Alabama and Tennessee — today."
Roth predicted some areas could get up to five inches of rain.
Earlier Monday, Alberto rolled up big waves and tides along beaches of the northern Gulf Coast. Lifeguards posted red flags along the white sands of Pensacola Beach, where swimming and wading were banned as Alberto disrupted long holiday weekend plans for millions.
The storm also forced some Memorial Day tributes to be cancelled across Florida's Panhandle.
In Cuba, where Alberto's outer bands dumped about a foot of rain — causing rivers and reservoirs to overflow — the storm shut down railroad service, an oil refinery and parts of the country's national highway, according to state television and Cuba's National Meteorological Institute.
About 20,000 people were evacuated across the island.