A few severe storms with gusty winds and hail will rumble through the Southeast today and tonight.
Mild, humid air is streaming out of the Gulf of Mexico, providing enough fuel for locally severe thunderstorms.
Some thunderstorms are already pressing south and eastward across Tennessee, and some of them could turn severe by the afternoon.
The main threats will be locally damaging wind gusts and hail the size of quarters. Localized power outages could occur as some of the storms will be capable of downing tree branches onto power lines.
Even storms that do not turn severe can produce frequent lightning. A fire was caused by a lightning strike in Murfreesboro, Tenn., this morning.
Nashville is among the cities that could face a strong thunderstorm popping up.
"A shelf cloud I chased down in Eastern NC yesterday afternoon, near the Pamlico Sound. Nothing came of it but a few showers," said AccuWeather.com Facebook fan The Uprooted Photographer.
By the afternoon and evening, potentially severe storms will arrive across northern Alabama, northern Georgia and western portions of the Carolinas.
Atlanta and Charlotte will be in the path of thunderstorms during the evening.
The threat exists for another round of locally severe storms late in the week across portions of the Tennessee Valley and South. A quick-hitting squall line of thunderstorms will develop and push across these areas. Once again, large hail and damaging winds appear like they will be the main risks.
Track the thunderstorms on radar:
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.
The East (1988)
Big early season chill Philadelphia 35 (tied record) Atlantic City 30 Newark, NJ 35 Bridgeport, CT 31 Hartford, CT 28
Binghamton, NY (2000)
1" of snow - the earliest date on record an inch or more of snow has fallen.
San Antonio, TX (2000)
A high temperature of 45 degrees (the average high on this date is 84 degrees).