A severe storm is bearing down on the Tulsa area, ending a quiet start to the nation's tornado season.

Tornado warnings were issued and sirens blared for a time Wednesday night as the storm moved across the area.

Amateur radio operators reported damage in communities west of the city, but there were no reports of injuries.

The Storm Prediction Center had warned that a clash of warm and cooler air masses Wednesday could lead to violent storms. It predicted mostly hail and high winds, but said tornadoes couldn't be ruled out.

Tornadoes were also reported in adjacent parts of northwestern Arkansas. No injuries were reported as the storms went through rural parts of the Ozark Mountains.