Tornado watch in effect for Callaway County until 10 p.m.

The National Weather Service has issued a tornado watch for Callaway County and several other central and northern Missouri counties until 10 p.m.

A tornado watch is issued when conditions are favorable for the development of tornadoes in or close to the watch area. The National Weather Service advises to be on the lookout for the following warning signs:

•Dark, often greenish skies

•Large hail

•A large, dark, low-lying or rotating cloud

•A loud roar, similar to a freight train.

If any of these signs are observed, be prepared to take shelter immediately.