The storm is threatening the Southeast with flooding as it is expected to spread moisture across the region into the middle of the week.
Two members of the press, a TV anchor and photojournalist were killed when a tree fell on their vehicle in North Carolina.
"Two journalists working to keep the public informed about this storm have tragically lost their lives, and we mourn with their families, friends and colleagues", North Carolina Gov. Roy Cooper said in a statement.
Alberto could cause $400 million to $500 million across the South, including damage to cars crushed by toppled trees, wrecked roofs and flooding, Watson said in an interview. The storm, coming on the last day of the Memorial Day weekend, was expected to scramble holiday travel. There, almost two inches of rain fell, while some four inches fell in other areas, the Panama City News Herald reported.
"Strong squalls off and on" had kept her inside, she said.
The 2018 Atlantic hurricane season's first storm, Alberto, is set to make landfall east of Pensacola, Fla., in the early afternoon - just shy of hurricane intensity. Particularly after an especially damaging 2017 season where the cumulative damages from three major storms that made landfall in the US likely in the hundreds of billions of dollars.
In Maryland, a state of emergency was issued after extreme flooding and heavy rain hit the state.
The storm was in southern Alabama as of early Tuesday morning, with winds of about 30 miles per hour, according to the National Hurricane Center.
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Some areas on Gulf Coast barrier islands remained under evacuation orders due to flood risks, officials said.
Between four and eight inches of rain could pummel Florida Panhandle, eastern and central Alabama, and western Georgia. The Florida Keys and Florida peninsula could receive up to 5 inches of rain in some areas.
Alberto, now a subtropical depression, is expected to continuing weakening Tuesday (May 29) as it moves inland over Alabama and Tennessee, forecasters said in their morning update. Isolated deluges of 12 inches (30 centimeters) were possible. The storm's remnants doused the Deep South with waves of rain Tuesday as the vast, soggy system pushed northward toward the Tennessee Valley.
"We had talked a little bit about how he [McCormick] wanted us to stay safe and we wanted him to stay safe", said Geoffrey M. Tennant of the Tryon Fire Department.
The storm is threatening the Southeast with heavy rain, as it moves north at 12 miles per hour.
Last year, a number of deadly hurricanes hit the USA and Caribbean.
However, the NHC said the season is likely to be "near or above normal".