Tornado Warning in central Oklahoma...

240 PM CDT Mon may 20 2013 

The National Weather Service in Norman has issued a 

* Tornado Warning for... 
northwestern McClain County in central Oklahoma... 
southern Oklahoma County in central Oklahoma... 
northeastern Grady County in central Oklahoma... 
northern Cleveland County in central Oklahoma... 

* until 315 PM CDT 

* at 238 PM CDT...National Weather Service meteorologists detected a 
severe thunderstorm capable of producing a tornado. This dangerous 
storm was located near Newcastle...and moving east at 20 mph. 

In addition to a tornado...large damaging hail up to Golf Ball size