Greater Cincinnati counties in Ohio are under a tornado watch until noon. The watch covers Butler, Clermont, Hamilton and Warren counties.

Alerts have been issued across portions of the four states as parts of the U.S. contend with severe weather threats.

CLEVELAND — A Tornado Watch has now been issued for all of Northeast Ohio as we continue tracking storms for today. The Tornado Watch, which was issued shortly before 10:40 a.m. Wednesday, will remain in effect until 5 p.m. for the following counties ...

Forecasters use the terms tornado watch and tornado warning when predicting if and where tornadoes are possible in an area. How are they different?

Several Indiana counties will remain under a tornado watch until noon and then a wind advisory will remain in effect until 5 p.m. on Wednesday.

When there’s a tornado risk, the National Weather Service will issue two kinds of alerts: a tornado watch or a tornado warning.

A tornado watch is now in effect for far southwest Michigan. A severe thunderstorm watch is also in effect from Iowa to part of Michigan. There are expectations of a few tornadoes, which could be intense.

A tornado watch will remain in effect across most of the state on Wednesday, March 11. What is the difference between a tornado watch and warning?

The forecast calls for scattered thunderstorm activity in southeast Michigan as far north as Saginaw. The weather service wasn't taking any chances after four people, including a 12-year-old boy, died.