If you're not sure what you should do for a tornado warning vs. a tornado watch, here's the difference between these two terms — and why that matters.

A tornado watch that was in effect for most of the St. Louis area, including metro St. Louis, expired at 10 p.m. A tornado warning means a tornado has been spotted or indicated by the radar.

It is important to know the difference between a Tornado Watch and a Tornado Warning. The National Weather Service explains the difference between the two below: What is a Tornado Watch?

On Monday at 10:23 p.m. the National Weather Service issued an updated tornado watch in effect until 11 p.m. The watch is for Mason City as well as Butler, Franklin, Hamilton, Hancock, Hardin ...

ST. CLAIR COUNTY, Ill. – Some tornado warnings and watches emerged in the St. Louis region Wednesday afternoon and into the early evening. Several counties in the St. Louis area are now under a ...

The National Weather Service has issued a tornado watch for 18 counties in Iowa, including Polk County on Monday, April 28. The tornado watch will be in effect until midnight, according to the ...

A flood watch and tornado watch have been issued for much of the South Plains and surrounding area. The flood watch is in effect from 5 p.m. Friday through Saturday morning while a tornado watch ...

The National Weather Service has issued a tornado watch for 18 counties in Iowa, including Polk County on Monday, April 28. A tornado watch has been issued for parts of Iowa, Kansas, Missouri and ...

As of Tuesday morning, the local National Weather Service offices have issued a tornado watch across a large portion of the state, from Fredericksburg to Houston and Waco to San Antonio until 4 p ...

A tornado watch is in effect until Wednesday at 8 p.m. as strong storms associated with a slow-moving frontal boundary dive southward. The tornado watch includes the following counties ...