UPDATE: At least one person was killed and 16 others are in critical condition. Head to the Capital Weather Gang for more.

A stretch of Nebraska is under a tornado watch until late Monday evening, while there have been multiple reports of tornadoes touching down in the state.

Meteorologist Reed Timmer shared an image that appears to show two tornadoes on the ground simultaneously:

Here’s another look at the dual tornadoes, this one from the Weather Channel.

The biggest danger is in the northeast quadrant of the state, with the tornado threat also stretching into western Iowa. A tornado watch is in effect until 10 p.m. for a broad swath of the state, with the National Weather Service warning that several tornadoes (including some intense ones) are likely. In addition, NWS warns that large hail and brutal 70 mph wind gusts could be in store.

Images showing storms on the ground and damaged structures were already starting to spread across social media sites:

The storms on Monday follow tornadoes that touched down in Nebraska on Saturday.