More than 100,000 homes and businesses have been left without power after a tornado ripped through parts of northern Dallas late Sunday.
Flights at the Love Field airport were also delayed, officials added.
No injuries or deaths have immediately been reported, and no flash flood warnings have been issued.
Police and firefighters were scanning neighbourhoods to determine the extent of the damage on life and property.
Trump says US considering 'winding down' Iran war; Natanz nuclear facility attacked
President Donald Trump said the US was considering "winding down" its military operation against Iran, as Iran and Israel traded attacks on Saturday and Iranian media said the nuclear enrichment facility in Natanz had been attacked.
Former FBI chief Robert Mueller dies aged 81
Robert Mueller, the no-nonsense former FBI chief who documented Russia's interference in the 2016 US election and its contacts with Donald Trump's campaign but opted not to bring criminal charges against a sitting president, has died at age 81.
Ukrainian shelling kills four in Russia's Belgorod, governor says
Ukrainian forces shelled a public building in Russia's border region of Belgorod on Saturday, killing four people, the regional governor said.
Fire at Korean car parts factory kills 14, injures 60
Fourteen people died and 25 were seriously injured in a fire at a car parts factory in the South Korean city of Daejeon, fire authorities said on Saturday.
Ukraine says Russian attacks leave two dead, thousands without power
Russian attacks on Ukraine killed two people in Zaporizhzhia and left most of the northern region of Chernihiv without power on Saturday, Ukrainian officials said.
