That rumbling the past few days might get real Thursday. And, yes, hail could break loose -- again.

The Lowcountry will be under a slight risk of severe thunderstorms, according to the national Storm Prediction Center, including possible large hail and isolated tornadoes, as the cold front that spawned tornadoes across the country smacks into the coastal humidity. The weather was moving slowly enough today that it could create messes for either or both morning and evening rush hours.

"The brunt of it is expected to move in a couple hours after sunrise. Everybody needs to be aware of it. The timing isn't ideal," said Julie Packett, National Weather Service meteorologist in Charleston, today. "By tomorrow evening it should be pushing off the coast and the beaches should be dry." The worst of the weather was expected to extend from 9 a.m. to mid-afternoon.

The S.C. Climate Office called for the storm system to weaken as it moved across the state, but re-strengthen along the beaches with the afternoon heating. But the worst of storms were expected in northeast North Carolina and Virginia.

The Lowcountry was surprised by pea-sized to golf ball-sized hail that fell like snow April 21 during evening rush hour.

Reach Bo Petersen at 937-5744.