The National Weather Service on Friday warned that potentially strong tornadoes may develop on Saturday over the lower to middle Mississippi and Tennessee valleys. Lightning, wind gusts of at least 74 mph and hail of at least two inches will accompany the outbreak over parts of the valleys and Southeast through Sunday.

A powerful strom system is forecast to sweep the south Friday and into the weekend, spreading the threat for severe weather all across portions of the US.

Strong storms are heading to the Upstate, the National Weather Service says, and tornadoes could spin out of them. The weather service has issued a Hazardous Weather Outlook for Anderson, Greenville and Spartanburg counties,

The dangerous outbreak will sweep through the Midwest, South and East through the weekend. Saturday could be one of the worst severe weather days of the year.

The threat of tornadoes is moving east into the Mississippi Valley and Deep South a day after a massive storm system moving across the country unleashed winds that damaged buildings, whipped up dust s

A multi-day severe weather outbreak is set to bring tornadoes, flash flooding and damaging winds from the Midwest to the South to the East Coast.