A portion of the I-95 corridor will continue to receive drenching downpours, thunderstorms and the potential for flash flooding into early Friday morning.
A nearly stalled front stretching from the mid-Atlantic through the Tennessee Valley will focus the activity in a swath from Virginia to North Carolina, South Carolina and Georgia overnight.
Slow-moving thunderstorms are responsible for dropping 2 to 4 inches of rain in some western suburbs of Washington, D.C. late Thursday evening. Dulles International Airport recorded nearly 4 inches of rain in the span of just a few hours Thursday night. The heavy rain has led to several reports of street flooding and even reports of water rescues north and west of Washington.
Earlier Thursday evening, 2 to 3 inches of rain fell in the span of just a couple of hours around Lynchburg, Va.
Farther south, Doppler radar estimated that 8.5 inches had fallen Thursday across northern Allendale County, S.C., causing widespread flash flooding.
Moisture coming up from the Gulf of Mexico this July has already brought an excess of rain to much of the mid-Atlantic. The heavy storms Thursday night will continue to re-aggravate the flooding problems from earlier in the month.
Since the front focusing the rainfall Thursday and Thursday night will stall and reverse its motion from earlier in the week, look for showers, thunderstorms and the risk of flooding to expand westward once again to the central and southern Appalachians into the weekend.
Smoke created hazy, orange views in Los Angeles on Saturday as the Sand Fire continued to rage less than 40 miles away from the city's downtown.
Darby will continue to deliver locally heavy rain, gusty winds and rough surf to Hawaii into early Monday. But the tropical storm will provide long-term benefits.
Dangerous heat will surge northward and send temperatures soaring across the northwestern United States during the final week of July.
Much of the eastern United States will continue to swelter with above-average temperatures into the end of the month.
Downpours will spread from the lower Mississippi Valley to eastern and central Texas early this week, delivering needed rain but raising the concern for flash flooding.
With the heat of summer comes many unwelcomed pests, including mosquitoes, ants, fruit flies, wasps and stink bugs, into outdoor spaces and homes.
Tucson, AZ (1952)
60-mph winds ripped roofs off an apartment complex and an airplane hangar, sweeping dust and sand through the city and leaving 200 persons homeless.
North Carolina (1975)
Lightning killed 13 cows during a thunderstorm at Kenansville. Heavy rains elsewhere in the state forced the Tar River out of its banks at Greenville, causing 14 families to evacuate their homes.
New York (1975)
Severe thunderstorms in western and central NY: lightning struck a city park in Rochester injuring 12 children, all were playing on a metal jungle gym. One patrolman described the scene as if "someone threw a stick of dynamite in the middle of the crowd and it blew."