AccuWeather.com reports another round of storms will fire in the Eastern states Thursday. The storms have the potential to bring blinding downpours and flash flooding for rush hour.
Building thunderstorms to the west will reach the heavily traveled I-81, I-85 and I-95 corridors Thursday afternoon and evening.
Major cities at risk for the downpours and locally damaging winds include Hartford, Conn., Scranton, Pa., New York City, Philadelphia, Wilmington, De., Baltimore, Washington, Richmond, Va., Raleigh, N.C., Charlotte, N.C., Columbia, S.C., Atlanta and Montgomery, Al.
People should be prepared for sudden near-zero visibility on the roads as the storms hit.
Flight delays are possible at multiple major airports and connecting hubs as the storms approach.
Some communities will be slammed by torrential rain lasting long enough to cause flash and urban flooding. There is the potential for two inches of rain in an hour's time, which is enough to overwhelm storm drains and bring small streams out of their banks.
A few locations can also be blasted by 60-mph wind gusts with or without heavy rain. Winds this strong can down trees, large tree limbs and power lines in some instances.
A small number of locations can be hit with large hail.
Keep in mind that lightning is one of Mother Nature's leading source of injuries and fatalities. If you can hear thunder, you are close enough to the storm to be struck by lightning, even if the sun is shining, the storm is not heading directly toward you or the storm has just passed.
If you have any plans to be out and about into Thursday night over the eastern third of the nation, keep an eye out for rapidly changing weather conditions.
Dark skies ahead can signal blinding downpours, powerful winds and possible hail. If you get caught driving through this weather, pull well off the road to a safe location, away from any trees or power poles and wait for it to pass.
High humidity will linger over much of the eastern third of the nation into next week. Two large high pressure areas, a Bermuda high to the east and a massive high in the West, will squeeze out the moisture along the Atlantic Seaboard and the Appalachians in the form of rounds of torrential downpours. The pattern will increase the risk of flooding.