Baseball sized hail, tornado warning issued for south central Sask.

A tornado warning is in effect for therural municipalities of Arm River andWillner,including Davidson and Girvin, Sask.

According to Environment Canada, a sightingof a tornado was reported near Davidsonat about 8:20 p.m. CST.

Asevere thunderstorm is moving east to southeast at 50 km/h.

The weather agency warns that extreme hail the size of baseballs or larger are also possible along with damaging winds and intense rainfall.

The agency warns residents to take cover or find shelter immediately if threatening weather approaches.