A massive storm system is sweeping across the eastern United States, putting an estimated 120 million Americans in its path as catastrophic flooding swallows homes, forces evacuations and triggers emergency warnings across the South.
The dangerous weather unleashed its first major impacts along the Georgia-Tennessee border overnight Wednesday, sending rivers surging over their banks and leaving entire neighborhoods underwater.
By Thursday morning, the National Weather Service had issued flash flood emergencies in parts of northern Georgia and southeastern Tennessee, warning residents that the rapidly rising water posed an immediate threat to their lives.
"This is a particularly dangerous situation. Seek higher ground now! Life threatening flash flooding of low water crossings, small creeks and streams, urban areas, highways, streets and underpasses."
Communities in Fannin County, Georgia, and Polk County, Tennessee, were among the hardest hit after torrential rainfall overwhelmed local waterways.
Some areas received more than six inches of rain, with reports of even higher totals in portions of northern Georgia.
FLASH FLOOD EMERGENCY STRIKES GEORGIA TOWN: Torrential rain drenched thousands of people in Fannin County, Georgia, triggering a flash flood emergency as the wet conditions have overtaken communities, leaving them unrecognizable.#Rain #Flooding #Georgia #FOXWeather pic.twitter.com/eoGgTzDihu
— FOX Weather (@foxweather) November 5, 2026
In McCaysville, Georgia, and neighboring Copperhill, Tennessee, floodwaters surged through streets and into buildings, leaving emergency crews scrambling to rescue stranded residents.
The Toccoa and Ocoee rivers rose dramatically as runoff poured into the waterways, creating dangerous conditions for nearby homes and businesses.
Local authorities ordered evacuations as the flooding intensified, while drivers were warned to avoid roads covered by water.
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The National Weather Service reported that some locations were experiencing catastrophic flooding, with homes and businesses inundated.
But the destruction along the Georgia-Tennessee border could be only the beginning of a much larger weather event.
Forecasters warned that the powerful low-pressure system would continue pushing toward the Mid-Atlantic and Northeast, bringing heavy rainfall to communities across as many as 23 states.
Thunderstorms were expected to intensify across the Carolinas on Thursday, while widespread rain spread northward through Virginia, Maryland, Pennsylvania and into New England.
Major population centers, including New York City, Boston, Hartford, Atlantic City and Norfolk, could experience significant disruptions as the system moves along the East Coast.
AccuWeather meteorologists warned that the storm could linger through Saturday, increasing the threat of flooding in vulnerable communities.
HAPPENING NOW: A flash flood emergency southeast Tennessee and north Georgia has the city of McCaysville shut down with water rescues ongoing. #GMN pic.twitter.com/RH9sdwN4MX
— WKRN News 2 (@WKRN) November 5, 2026
The concern is that the system could slow considerably after reaching the Atlantic Coast, allowing heavy rain to repeatedly fall over the same locations.
AccuWeather senior meteorologist Brett Anderson explained why that pattern is particularly dangerous.
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'This is the type of setup that can quickly lead to flash flooding as heavier rain cells may continuously move over the same areas.'
A separate atmospheric disturbance is also expected to reinforce the system, potentially prolonging the rainfall and worsening conditions in already saturated areas.
Forecasters warned that even communities escaping major flooding could face hazardous driving conditions.
AccuWeather meteorologist Tyler Roys cautioned that the recent stretch of dry weather across parts of the East Coast could make roadways especially slippery when rain arrives.
'It doesn't take a torrential downpour to create dangerous driving conditions. Even relatively light rain can make roads surprisingly slick after weeks of dry weather.'
Oil, dust and other debris can accumulate on pavement during dry periods, creating slick surfaces when the first rainfall mixes with the buildup.
Motorists have been urged to reduce their speed, allow additional stopping distance and avoid flooded streets.
The National Weather Service also reminded Americans that attempting to drive through floodwaters can quickly turn deadly.
'Turn around, don`t drown when encountering flooded roads. Most flood deaths occur in vehicles,' the agency warned.
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The storm could also bring a sharp temperature drop as colder air moves south from Canada.
Forecasters expect temperatures across portions of the Northeast to fall into the 40s and 50s, with wet snow possible in higher elevations of several northern states.
Parts of Maine, New Hampshire, Vermont, New York, Pennsylvania, Ohio and Michigan could see wintry precipitation as the colder air arrives.
The temperature shift comes amid disruptions to the polar vortex, a circulation of powerful winds high above the Arctic that typically helps contain extremely cold air near the North Pole.
When that circulation weakens, colder conditions can spread farther south into Canada and the United States.
For now, emergency officials remain focused on the immediate flooding danger as the storm continues its march toward the Northeast.
With homes already inundated along the Georgia-Tennessee border and millions more Americans facing heavy rainfall, authorities are urging residents to monitor local weather alerts and follow evacuation instructions.
The National Weather Service has confirmed life-threatening flooding in northern Georgia and southeastern Tennessee, while forecasters warn that additional communities could face dangerous conditions through Saturday.
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