Wind storm knocks out power lines, traffic lights and branches in London, Ont.

London should batten down the hatches on Saturday, as strong winds are expected across the region as most of southern Ontario finds itself under a wind warning, with gusts of up to 90 km/h expected, according to Environment Canada.

A strong wind storm caused by a fast-moving cold front resulted in power disruptions in London Saturday morning.

Numerous 9-1-1 calls flooded dispatchers shortly after 9 a.m. as a sudden wall of heavy rain and wind hit the city.

The gusts took down power lines in multiple locations, including an alarming incident in a city park off Darlene Crescent.

There, a dangling power line made contact several times causing fiery explosions, cracking and arching of other lines.

London firefighters were sent to monitor the scene before London Hydro crews arrived.

There were similar reports throughout the Forest City.