An area of rain will continue along the East coast from Long Island to southeastern New England through the day Friday.
Some communities could be thoroughly drenched. A few spots could be hit with flash and urban flooding.
While cooler, less humid air continues to expand over the Northeast, it will not be enough to prevent a swath of rain.
The cool pattern, with and without rain, in the Northeast will represent a big change from the heat and high humidity from last week. AccuWeather.com RealFeel® temperatures in some areas with the rain may be more than 30 degrees lower, when compared to the heat, sunshine and high humidity recently.
Around Norfolk, Va., an inch of rain fell in about an hour early Thursday morning. Rain caused flash flooding in Norwichtown, Conn., during the afternoon. Similar rainfall and flooding could occur around Boston and coastal Maine into Friday.
Dry air is forecast to chase the rain away over much of eastern Virginia, the Delmarva Peninsula and New Jersey and southeastern New York during Friday. However, rain may continue farther to the northeast along the coast.
The rain is likely to stay away from much of the area from central Virginia and West Virginia to Pennsylvania, upstate New York and northwest New England Friday, before returning later in the weekend.
According to Mark Mancuso, "There is a slight chance a very weak tropical system forms in the pattern along the Atlantic coast before the end of the week."
A system originating from the central Plains took a left turn along the East coast Thursday.
"The system will tap into tropical moisture as it reaches Atlantic waters and can bring very heavy rainfall in a narrow zone right along the coast," Mancuso added.
Another round of rain is expected to move through the Carolinas on Saturday, which may lead to rises on some small streams and creeks.
A strengthening storm system will bring the threat for flooding, mudslides and severe thunderstorms to areas from Italy into the Balkans later Friday into the weekend.
Winter will kick off with mild weather in the Northeast and mid-Atlantic as an intensifying El Nino influences the weather pattern across the country.
A "blob" of abnormally cold water in the North Atlantic, located near Greenland, has the potential to put enough drag on the ocean current to impact weather conditions in the years to come.
“It was by far the most intimidating natural disaster I have ever chased,” Storm Chaser and Extreme Meteorologist Reed Timmer said of the historic flooding in South Carolina.
Cool weekend weather is in store for the Northeast after rain and thunderstorms dampen the region on Friday.
A few snow flakes in Philadelphia, PA (trace). Also a trace of snow in Baltimore, MD.
Damaging hailstorms - $7.5 million loss to crops.
Intense low pressure causes 100 mph wind gusts in parts of state.