Storms will start to intensify later in the afternoon.
Subtropical Depression Alberto is bringing plenty of rain from the Gulf Coast all the way up through the Mid-Atlantic region as it makes progress to the north from Alabama.
Everett said the heavy rains will likely mean higher than normal summertime lake levels on some of TVA's biggest storage reservoirs, including Fontana, Appalachia, Douglas, Hiwassee, Chatuge and Blue Ridge lakes. "There's not going to be a lot of grilling or boating going on - it's going to be messy". Even the afternoon storms should be widely scattered along the trailing trough left behind by Alberto moving north through Alabama.In between showers, it's certainly not out of the question to see a little peek-a-boo sunshine.
The NHC warned the storm would dump rains of 2-6 inches (6-15 cm), with up to 12 inches over north Florida and Alabama through Tuesday night. This is not a widespread outbreak, just one or two are possible as Alberto moves closer.
A water vapor satellite image from Monday morning reveals dry air (oranges and yellows) pinwheeling its way into Alberto's circulation.
With all the rain around, Monday's high temperature will only get to about 76 degrees.
Middle Tennessee can expect to see 1 to 3 inches of rain through Wednesday.
According to Gardner, the rain will come in bands Monday, picking up in intensity with some heavy downpours before slowing down. The U.S. Golf Association canceled a practice round of the U.S. Women's Open Championship, being played at Shoal Creek, because of the weather and Alabama Power Co. said about 20,000 homes and businesses were without electricity Tuesday, most in the Birmingham area.
Meteorologists are predicting a warm and muggy Memorial Day, with a chance of showers later in the day.
Gov. Roy Cooper issued a statement calling on North Carolina residents from the mountains to the coast to watch the weather and be prepared. In some cases, rainfall could top 10 inches in pockets across the state.
The storm disrupted Memorial Day weekend from Pensacola in the Panhandle to Miami Beach on Florida's southeastern edge.
Lifeguards posted red flags along the white sands of Pensacola Beach, where swimming and wading were banned amid high surf and unsafe conditions.
Subtropical Storm Alberto - the first named storm of the 2018 hurricane season that starts June 1 - prompted Florida, Alabama and MS to launch emergency preparations Saturday.
Waters off the eastern and northern Gulf Coast are expected to be rough through Tuesday. Authorities spent the day warning swimmers to keep out of the surf because of life-threatening swells and rip currents. The hurricane center said a tropical storm warning was in effect from the Suwannee River in Florida to the Mississippi-Alabama state line. Breezy conditions are also expected. Isolated deluges of 30 centimetres also are possible.