The stage is set for severe thunderstorms to impact parts of the Midwest Sunday afternoon and evening.
"The outbreak of severe weather will first unfold across eastern North Dakota and Minnesota before dropping into Illinois during the overnight hours," AccuWeather Meteorologist Kristina Pydynowski said.
The outbreak will bring widespread damaging winds, hail, flash flooding and isolated tornadoes, which will span about 1,000 miles from Minnesota to Tennessee, threatening lives and property.
Pydynowski added that, overnight the danger will transition to more of a damaging wind event with storms leaving a widespread swath of damage, possibly even evolving into a derecho.
The severe weather outbreak will continue on Monday. The danger will wane for a time during the midday and early afternoon, but will pick right back up across the Ohio and Tennessee valleys in the afternoon.
"We will have also have to watch for another round of severe weather to erupt Monday afternoon in the Upper Midwest," stated Pydynowski.
6:30 p.m. EDT Sunday Tornado spotted near Wilkin, Minnesota, according to a trained spotter. Take immediate cover if your in the general area.
6:05 p.m. EDT Sunday: Hail. 1 inch in diameter reported near Grand Forks, North Dakota, a trained spotter reports.
@JohnWheelerWDAY South end of Grand Forks at 4:41pm this evening. pic.twitter.com/E97PAyyEpy— Brody Welsh (@BrodyWelsh) July 12, 2015
5:35 p.m. EDT Sunday: Tornado warned storm moving into the Grand Forks, North Dakota Area
@NWSGrandForks grand forks looking west pic.twitter.com/93beFEFMTc— Travis Anderson (@xTravisAx) July 12, 2015
5:05 p.m. EDT Sunday: Tornado Warning issued for Grand Forks, North Dakota until 5:00 PM CDT. Take Cover
FGF issues Tornado Warning for Polk [MN] and Grand Forks [ND] till 4:45 PM CDT https://t.co/dbQQ1FTAqn— NWS Grand Forks (@NWSGrandForks) July 12, 2015
4:44 p.m. EDT Sunday: A funnel cloud was spotted near Hatton, North Dakota, a trained spotter reports.