Springtime in the Central Valley is no stranger to rain, but Tuesday afternoon Turlock residents were on the lookout for a different force of Mother Nature. Warm, spring air combined with a cold, heavy thunderstorm and caused the National Weather Service to issue a tornado warning for Turlock and the surrounding Stanislaus County. The tornado warning went into effect at 12:48 p.m. and lasted until 1:15 p.m., and during that time, a trained spotter with NWS reported two brief funnel clouds in north Turlock near Highway 99.