TORONTO - Environment Canada says the first Ontario tornado of the year has been confirmed in the Fergus area, about 20 kilometres north of Guelph.

The twister touched down during a series of powerful thunderstorms that swept through southern Ontario on April 27.

That was the day before much of the region was pounded by a wind storm.

Environment Canada says the tornado was rated 0 on the Fujita scale, with winds up to 110 kilometres per hour. Tornadoes are rated from 0 to 5, with 0 at the bottom of the scale.

The agency's Geoff Coulson says an eyewitness account helped confirm the tornado.

Ontario normally gets about 12 tornadoes during the summer severe weather season that runs from late April to early October.