Alerts for: Barrie - Orillia - Midland

Warnings

7:39 PM EST Tuesday 12 December 2017
Snow squall warning in effect for:

  • Barrie - Collingwood - Hillsdale

Snow squalls are expected. Under the snow squall bands, visibilities will be significantly reduced due to the heavy snow combined with blowing snow, and snow will quickly accumulate.

Lake effect snow squalls are expected to persist through tonight.

Snowfall amounts near 15 cm per 12 hours are likely in the strongest snow squalls. Local blowing snow is also possible leading to reduced visibilities.

Snow squalls will begin to ease Wednesday morning.

Snow squalls cause weather conditions to vary considerably; changes from clear skies to heavy snow within just a few kilometres are common. Visibility will be suddenly reduced to near zero at times in heavy snow and blowing snow. If visibility is reduced while driving, turn on your lights and maintain a safe following distance. Be prepared to adjust your driving with changing road conditions. Road closures are possible.

Snow squall warnings are issued when bands of snow form that produce intense accumulating snow or near zero visibilities.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ec.cpio-tempetes-ospc-storms.ec@canada.ca or tweet reports using #ONStorm.

 

Watches

7:58 PM EST Tuesday 12 December 2017
Snow squall watch in effect for:

  • Midland - Coldwater - Orr Lake

Snow squalls are expected to develop. Under the snow squall bands, visibilities will be significantly reduced due to the heavy snow combined with blowing snow, and snow will quickly accumulate.

Conditions will become favourable for lake effect snow squalls tonight.

Snow amounts near 10 to 15 cm per 12 hours are possible in the strongest snow squalls. Occasional whiteout conditions are also possible from blowing snow due to the strong winds.

Snow squalls will begin to ease Wednesday morning.

Snow squalls cause weather conditions to vary considerably; changes from clear skies to heavy snow within just a few kilometres are common. Visibility may be suddenly reduced at times in heavy snow. Surfaces such as highways, roads, walkways and parking lots may become difficult to navigate due to accumulating snow.

Snow squall watches are issued when conditions are favourable for the formation of bands of snow that could produce intense accumulating snow or near zero visibilities.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ec.cpio-tempetes-ospc-storms.ec@canada.ca or tweet reports using #ONStorm.

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