The clean-up along Highway 402 near Sarnia continues, even as Environment Canada issues more snow squall warnings and watches for many areas of southwestern Ontario.

Meanwhile, Ontario Premier McGuinty says there will be a review of the highway closure that stranded hundreds of motorists, to figure out what might have been done to prevent the situation.

Two military helicopters were continuing to search for motorists who may have gotten stranded on rural roads near Highway 402.

While the ordeal for motorists appears to have come to an end, the same couldn't be said of the bad weather.

Environment Canada has issued snow squall warnings and watches for many areas of southwestern Ontario and some roads in the area remain closed.

Snow squalls were expected to drop another 15 centimetres in the area on Wednesday. The squalls cause low to no visibility at times, and blowing and drifting snow can make driving conditions extremely difficult.

A snow squall warning is in effect for: Strathroy - Komoka - Western Middlesex County - London - Parkhill - Eastern Middlesex County - Woodstock - Tillsonburg - Oxford County - Goderich - Bluewater - Southern Huron County - Wingham - Blyth - Northern Huron County - Stratford - Mitchell - Southern Perth County and Saugeen Shores - Kincardine - Southern Bruce County - Listowel - Milverton - Northern Perth County.

A snow squall watch is in effect for: Bruce Peninsula - Sauble Beach – Tobermory - Hanover - Dundalk - Southern Grey County - Owen Sound - Blue Mountains - Northern Grey County.

Road conditions and closures

Lambton County OPP are still warning motorists to stay off the roads if possible, as many roadways in the area and in nearby counties are treacherous or impassable.

Closed roads include:

  • Highway 21 from Port Elgin to Grand Bend
  • Highway 26 from Owen Sound to Meaford
  • Highway 402 - closed to westbound traffic from Highway 401 to Sarnia, open to eastbound traffic from Oil Heritage (Wyoming) to Highway 401

Crews expect it will take until at least Wednesday night before all vehicles are removed from Highway 402.

With files from The Canadian Press