Severe weather and flash flooding will target areas from Southern Plains to the Midwest through Thursday. The greatest threat of tornadoes and large hail Wednesday is expected from Texas to Arkansas.

Severe storms caused widespread power outages and damage from Texas into the Northeast on Tuesday.

Some hotel guests on a remote Arctic island in the Norwegian archipelago of Svalbard recorded the jaw-dropping moment a man was chased by a polar bear. See how the chase started and you’ll learn why tourists are advised to never travel without a local guide.

Thousands of people across north Texas lost power as a supercell thunderstorm battered the region. Wind gusts over 100 mph were reported in some areas and flash floods left some drivers stranded. Watch this video for the latest.

Dramatic video shows how severe storms spawned a huge tornado in northwest Nebraska on Sunday. The twister derailed a train near Ashby, knocking over as many as 130 railcars.