Oregon Department of Transportation has extended the studded tire season until Sunday, April 11.

Oregon Department of Transportation has extended the studded tire season until Sunday, April 11.

Major changes in the weather forecast, the ferocity of the storms and citizen input convinced authorities to extend the deadline, usually April 1, ODOT said in a short news release announcing the change.

Drivers should remain cautious while driving in snow zones, ODOT said.

— Anita Burke