At 4:50 p.m. Central Standard Time Friday, Environment Canada has issued a tornado warning for South Central Saskatchewan. Extra care and attention should be exercised in and around the following localities: Martensville, Warman, Langham, Arelee, Perdue and Delisle. Environment Canada meteorologists are tracking a severe thunderstorm that is possibly producing a tornado. Damaging winds, large hail and locally intense rainfall are also possible.