Trouble is brewing for people with outdoor plans and travel along the Atlantic Seaboard at times this weekend in the form of areas of drenching rain, thunderstorms and fog.
Moisture from the Gulf of Mexico and the Atlantic Ocean will converge on the East Coast this weekend. Some of the rain will spill into the Appalachians at times.
People heading to the beach, ballgames, outdoor concerts and other activities should be prepared for episodes of rain and isolated thunderstorms.
The locally heavy rain and locally dense late-night and early-morning fog can slow travel.
The heaviest rain will be concentrated from the Interstate 95 corridor to the beaches, where a couple of inches may fall from Friday through Sunday. Locally heavier amounts are possible. The rain will be heavy enough cause incidents of urban flooding in the corridor.
According to AccuWeather Chief Meteorologist Elliot Abrams, "It may rain very hard in some communities, but areas 50 miles away could receive little or no rain at all in a pattern like this."
Cities from Savannah, Georgia; Charleston, South Carolina; Raleigh, North Carolina; Richmond, Virginia; Washington, D.C.; Baltimore; Wilmington, Delaware; Philadelphia; New York City and Boston will be affected by one or two rounds of drenching rain.
Some showers and thunderstorms will occur farther west over the Appalachians and along the central Gulf Coast. Areas from New Orleans to Charlotte, North Carolina, and Harrisburg, Pennsylvania, will be unsettled at times
According to Northeast Weather Expert Dave Dombek, "It will not rain the entire weekend along the I-95, I-81 and I-77 corridors but toward the beaches the rain is likely to be more frequent."
There is a chance the rain will retreat eastward toward the beaches for a time late Saturday into Sunday morning.
During Sunday, a system pivoting eastward from the Midwest may allow some breaks in the clouds over the Appalachians but at the same time may lead to an uptick in afternoon and evening thunderstorms.
Some of the storms over central and northern Florida have the potential to be strong this weekend, especially on Sunday.
According to Southern Weather Expert Dan Kottlowski, "A southeasterly flow of air will develop and allow storms to build as they move northwestward over Florida this weekend."
Bertha is forecast to curve east of the United States next week.
A warmer weather pattern awaits much of the Eastern states by the middle of August.
A deadly 6.2-magnitude earthquake struck central Italy at 3:36 a.m. local time Wednesday morning with tremors felt as far away as the capital city of Rome.
Tropical Depression Seven strengthened into Tropical Storm Gaston during Monday night with another system attempting to form near the Caribbean.
Following a fall-like start to the week, warmth and humidity will build over the northeastern United States prior to the weekend.
A budding tropical disturbance has the potential to reach Florida with gusty winds, showers and thunderstorms during Sunday and Monday.
The return of warmer and more humid air will trigger another round of strong thunderstorms across the central United States this week.
Hampton Roads, VA (1990)
Very heavy rain fell during the morning, causing widespread flooding. There was also 7.33 inches of rain at Virginia Beach. Between 4 and 5 inches of rain fell at Hampton Roads.
Cloudburst at Guinea, VA - 9.25 inches of rain in only 40 minutes.
Vostok, Wilkes Land, Antarctic a (1960)
About 1,176 kilometers from the Indian Ocean, the mercury fell to minus 127 degrees F (minus 88C). This was the lowest recorded temperature ever on the face of the earth, until July 21, 1983, when the temperature reached minus 128.6 degrees at the same location.