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Melrose, ON

Alerts in Effect

Snow Squall Warning

Issued at 00:54 Wednesday 13 December 2017

Persistent 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 continue this morning.


Snowfall amounts of 15 to 30 cm per 12 hours are likely in snow squalls this morning. Whiteout conditions are also possible from blowing snow due to the strong winds gusting up to 60 km/h.

Currently the strongest snow squall is affecting an area from Grand Bend to Bayfield and inland towards the City of London. This snow squall will remain over the area for the next several hours. Local snowfall amounts of 30 cm or more are possible under this snow squall, including the City of London.

The snow squall will slowly lift northward later this morning.

Multiple road closures have been reported by the Ontario Provincial Police including portions of Highway 21, Highway 8, County Road 4 and County Road 25.

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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. Travel is expected to be hazardous due to reduced visibility in some locations. 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.



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