Damage is extensive throughout northeast London following a violent storm Friday night.

Dozens of trees have been uprooted and houses and other property have been damaged as a result.

Some of the hardest-hit areas include Grenfell Drive, Blackmaple Drive and Midale Cres.

In terms of precipitation, southwestern Ontario got a major drenching.

  • St Thomas 124.2 mm
  • Grand Bend 89 mm
  • Exeter 62 mm
  • London 53 mm
  • Tillsonburg 73.8 mm

Meanwhile, Environment Canada is investigating reports of a tornado touching down north of Orillia.

The storm was reported on the eastern side of Six Mile Lake in the Port Severn area yesterday afternoon.

Environment Canada says residents reported that hundreds of trees came down in the area, along with some power lines.

The Port Severn area was under a severe thunderstorm warning at the time, as were other parts of cottage country.

Stateside, about 129,000 DTE Energy customers in southeast Michigan have lost electricity due to thunderstorms that knocked down trees and power lines.

The utility said the number of outages is expected to rise.

The storms were part of a spate of severe weather that crossed the state.