Heavy downpours and hail covered swaths of Middle Tennessee as strong storms blew through on May 20, triggering severe thunderstorm and tornado warnings for multiple counties.

Storms did hit the metroplex Monday night. A thunderstorm watch was issued and one storm arrived just after midnight, bringing strong winds, small hail and lightning along with a half-inch of rain. Two tornadoes have also been confirmed during the storms on Monday.

The National Weather Service and AccuWeather both warn of severe weather that could affect the Southeast region, though forecasts remain uncertain.

Tuesday is now a Severe Alert Day due to the threat of more strong to severe storms likely across Louisville and Kentucky.

Strong to severe storms possible overnight. Storms could bring damaging winds and large hail.

On Thursday, Jonathan says there will be ongoing storms in northeastern Oklahoma around 7 a.m. Those storms will cause a chain reaction of storms to develop in central and east-central Oklahoma near Stillwater, Henryetta, Seminole, Ada and Pauls Valley by 10:30 a.m.

The main time window to watch for severe storms is 3-6 p.m. The main threats will come from very heavy rain, damaging winds, and hail, although an isolated tornado can’t be ruled out as storms interact with a warm front draped over the area.

University of Maryland, College Park officials said possible severe weather will delay the outdoor commencement ceremony.