Country

Please choose your default site

Americas

Asia

Europe

Portswitch, ON

Alerts in Effect

Snow Squall Warning

Issued at 19:13 Sunday 19 November 2017
Summary

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.

The initial snowsquall which affected some regions southeast of Georgian Bay late this afternoon has weakened. There was a report of 11 cm of snow in Orillia out of this band.

Another intense snowsquall is expected to form overnight and will once again bring heavier snow and poor visibility to the area. Additional amounts of 10 to 15 cm are expected before this snowsquall weakens later Monday 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. Travel is expected to be hazardous due to reduced visibility.

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.

Snow Squall Watch

Issued at 15:22 Sunday 19 November 2017
Summary

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

Snow squalls will likely form to the lee of Lake Huron and Georgian Bay tonight as northwesterly winds bring colder air into the region.
For the most part, the lake effect snow bands will shift from time to time which will limit snowfall accumulations. However, there is a possibility that a strong lake effect band will develop. This band would likely affect areas stretching from the Bruce Peninsula towards Lake Simcoe, although the exact placement of the band remains uncertain. This band may produce snowfall rates of a few cm per hour.

Local amounts of 15 cm within a 12-hour period are possible.

The snow squall activity is expected to end later Monday morning.

###

Travel may be hazardous due to sudden changes in the weather. Visibility may be suddenly reduced at times in heavy 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.



Track the Storm

Default saved
Close

Search Location

Close

Sign In

Please sign in to use this feature.