The severe weather will stretch from Texas to Indiana, with the highest threat for tornadoes in Missouri and Illinois.

ABC News Chief Meteorologist Ginger Zee reports on the severe weather as millions brace for a new round of storms.

Millions are bracing for severe weather in the Ohio Valley with possible tornadoes. expected. ABC News' Rob Marciano reports from Smithville, Missouri.

A potentially devastating storm system with tornadoes, damaging winds and hail is forecast to sweep across the Midwest and the Heartland on Tuesday.

A tornado watch has been issued for parts of Kentucky, West Virginia, Ohio and Pennsylvania through 9 p.m. ET Thursday night.

Kentucky is under a state of emergency as multiple tornado warnings have been issued throughout the Midwest.

Severe weather is in the forecast for the Heartland and the Midwest, with damaging winds, large hail and even a few strong tornadoes possible.

ABC News chief meteorologist Ginger Zee tracks the latest severe weather forecast.

"GMA" catches up with Tracy Harden on the journey of recovery and rebuilding of her beloved hometown diner one year after a tornado devastated her Mississippi town.

ABC News chief meteorologist Ginger Zee tracks the latest severe weather on the move, with 13 states on alert for heavy snow in the Heartland and potential tornadoes in the South.

Communities begin to rebuild after deadly tornadoes stormed through the heartland, hitting seven states, killing three and injuring dozens.

At least three people were killed and homes and businesses were destroyed in central Ohio.

At least 21 tornadoes were confirmed to have touched down on Wednesday and Thursday across seven states.

At least three people have been killed and 40 others injured after 15 tornadoes swept through seven states.

At least three people were killed in Ohio, after 14 tornadoes ripped across seven states in the Midwest.

There have been at least eight tornadoes reported across seven different states from Texas to Ohio throughout Thursday evening, according to the National Weather Service.

Footage shows a powerful tornado touching down in Fryburg, Ohio, on Thursday night, sending debris flying, as a severe storm system made its way through the Midwest.

Parts of Oklahoma and Texas are under severe weather watches as the forecast predicts heavy rain, hail and possible tornadoes.

The NWS has forecast thunderstorms across northeast and north central Kansas on Wednesday night, which it warns could "quickly become severe."

Several counties in Kansas are under a tornado watch.

At least nine tornadoes were reported across Illinois, Michigan and Ohio.

Strong thunderstorms are also expected from the Tennessee River Valley to the Northeast.

There were at least eight reported tornadoes across Illinois, Michigan and Ohio overnight.

At least 23 tornadoes touched down in six states, with extreme winds damaging most of the Florida panhandle.

More than half a million customers are without power as fierce winds, heavy rainfall and flash floods slam the region.

"GMA" takes a look back at Rolling Fork Rising, a unique program that lifts people out of the nightmare of a natural disaster and into the dream of home ownership.

The infant's home was destroyed by a deadly tornado in Tennessee.

Multiple long-track tornadoes were reported in northwest Tennessee Saturday afternoon.

ABC News' Melissa Adan is on the ground in Tennessee, where deadly twisters damaged hundreds of homes. Residents have already begun cleaning up.

The storm system that brought deadly tornadoes to the South is now moving east, bringing threats of rain and hail with it.

A storm now headed for the East Coast left destruction in its wake, with 22 reported tornadoes across multiple states.

Tennessee declared a state of emergency after a long-track tornado cut right through neighborhoods just north of Nashville.

At least six people died and 23 were injured after tornadoes hit northwest Tennessee Saturday afternoon, including "extensive" damage in the city of Clarksville, officials said.

Dangerous thunderstorms -- with possible tornadoes -- are heading to Texas, Oklahoma and Louisiana on Thursday.

ABC News chief meteorologist Ginger Zee shares the latest storm threats ahead of Thanksgiving.

An EF-1 tornado with winds up to 95 mph touched down in Star Valley, Arizona, damaging homes and downing trees.

Tracy Harden, the owner of Chuck’s Dairy Bar in Rolling Fork, Mississippi, rushed her staff into a cooler moments before a tornado hit.

The storms knocked out power for thousands of people, and damaged homes.

ABC News’ DeMarco Morgan visits Rolling Fork, Mississippi, five months after the small town was hit by a devastating tornado that destroyed most of it.

One of the twisters picked up a car on I-295.

More help is needed for Rolling Fork's residents and local businesses.

A tornado in March took a direct path across Rolling Fork – a small rural farming town with a population of 1,800 -- leaving catastrophic destruction in its wake.

The Mississippi Delta community still has a long road to recovery as organizations rally to help those in need.

A powerful tornado ripped through central North Carolina for more than a dozen miles destroying homes and injuring residents.

The tornado is part of a system of severe weather threatening some 57 million Americans, while extreme heat puts more than 100 million Americans at risk.

A powerful EF-3 twister touched down roughly 50 miles northeast of Raleigh on Wednesday, leaving a path of destruction approximately for more than 16 miles.

Triple-digit temperatures are fueling extreme weather across the Heartland.

Dozens of homes are damaged or destroyed in Indiana. Meanwhile, nine states across the South are under heat alerts. ABC News’ Morgan Norwood reports.

The East Coast is bracing for new severe thunderstorms on Monday from New York and Connecticut down to South Carolina.

At least one person was killed by a deadly storm in Indiana, a county official said.