A Severe Thunderstorm Watch is in effect for the local Kansas counties of :

Atchison, Brown, Doniphan, Jackson, Jefferson, Leavenworth, Marshall, Nemaha, and Pottawatomie; 

the local Missouri counties of  Buchanan, Platte, Andrew, and Holt; 

and the local Nebraska counties of Richardson, Pawnee, Nemaha, Gage and Johnson. 

The National Weather Service says the watch will remain in place until 5:00 Wednesday morning. 

A Severe Thunderstorm Watch means conditions are favorable for the development of severe thunderstorms.