Snow squall watch in effect for:
- Barrie – Collingwood – Hillsdale
- Midland – Coldwater – Orr Lake
- Orillia – Lagoon City – Washago
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.
Conditions are favourable for a period of lake effect snow squalls southeast of Lake Huron and Georgian Bay beginning this evening and continuing into Friday. These will be the first significant snow squalls of the season. Total snowfall accumulations in excess of 15 cm are possible for areas that receive multiple snow squalls.
A cold front will move over Southern Ontario this afternoon prior to the development of snow squalls and will rapidly reduce temperatures to the freezing mark. This will change rain showers to flurries and lead to hazardous driving conditions. Temperatures will continue to drop well below the freezing mark this evening.
Environment and Climate Change Canada is closely monitoring the situation and will update messages as required.
Travel may be hazardous due to sudden changes in the weather. Visibility may be suddenly reduced at times in heavy snow. Road closures are possible. Public Safety Canada encourages everyone to make an emergency plan and get an emergency kit with drinking water, food, medicine, a first-aid kit and a flashlight. For information on emergency plans and kits go to http://www.getprepared.gc.ca/
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.