Many U.S. residents are facing another night of below-freezing temperatures and no electricity after a massive winter storm dumped more snow in Northeast and left parts of the South coated in ice. The colossal storm halted air and road traffic in many areas and sent temperatures plunging. At least 26 deaths were reported in states hit by the winter weather. As the work week began, the heaviest snow fell from New York northward into New England. That's after heavy ice snapped branches and power lines in the South, leaving hundreds of thousands of homes and businesses without electricity. Arctic air was spreading in behind the storm and some communities in New York saw record-breaking subzero temperatures.

Some suburban Houston residents are dealing with cleanup following at least two tornadoes as heavy rain falls around the South and snow in parts of the Midwest. The Texas storm on Monday damaged over 100 homes though no injuries were reported. It came at the start of a busy Thanksgiving travel week in which Americans are closely eyeing the weather. Heavy rain was reported in Mississippi, Alabama and Georgia on Tuesday. Meanwhile, snow fell in North Dakota and was expected in parts of the Midwest, with more likely Wednesday in the Great Lakes region. New York's Macy's Thanksgiving Day Parade was expected to be dry but cold.

Meteorologists say a deadly tornado in North Dakota this summer has been upgraded to a top-of-the-scale EF5, and was the first on American soil in 12 years. The June 20 twister killed three people and at its largest was over a mile wide as it touched down for just over 12 miles. Meteorologists from the National Weather Service estimated Monday that the tornado had winds in excess of 210 miles per hour. The 1999 Bridge Creek-Moore tornado in Oklahoma holds the record of the strongest winds ever recorded in the U.S. at 321 miles per hour. Since the National Weather Service began using Enhanced Fujita scale in 2007, there have been 10 tornadoes categorized as EF5.

Parts of the Midwest and South are facing the possibility torrential rains and life-threatening flash floods. The fresh storms on Friday come as many communities are still reeling from severe tornadoes that destroyed whole neighborhoods and killed at least seven people. Kentucky's governor said floodwaters swept away and killed a boy Friday in his state. Forecasters warned of catastrophic weather on the way, with satellite imagery showing thunderstorms lining up like freight trains. Those who died in the initial wave of storms on Wednesday and early Thursday were in Tennessee, Indiana and Missouri. Forecasters say it was the opening act for days of wild weather that could bring flash floods across the nation's midsection.

The deadliest tornado in recorded U.S. history occurred 100 years ago. The Tri-State Tornado touched down in southeastern Missouri on March 18, 1925. It tore through Missouri, Illinois and into Indiana with a mile-wide funnel, killing 695 people and injuring more than 2,000. It was on the ground for nearly four hours and covered 219 miles. Mary Riseling coordinated a six-day commemoration for the Jackson County Historical Society in Murphysboro, Illinois, where 234 people died. Christine Wielgos of the National Weather Service says the ferocious storm hit at a them when neither reliable weather forecasting nor weather warning systems were in place.

Residents and work crews in the South and Midwest are beginning to clean up and survey the destruction from a series of storms that kicked up wildfires, tornadoes and dust storms. The severe weather that first developed Friday and barreled across seven states left at least 41 people dead. Wind-driven wildfires across Oklahoma destroyed more than 400 homes. Four deaths were blamed on the fires or high winds. In North Carolina, two boys were killed when a 3-foot wide tree fell on their home. And in Missouri, scattered twisters killed at least a dozen people.