winter storm
Winter storm continues through Friday morning.
What:
Total snowfall amounts are expected to range from near 10 cm toward the shore of Lake Superior, including Wawa, to 15 to 20 cm for areas inland and over the higher terrain.
Reduced visibility in heavy snow and blowing snow.
Flash freeze.
When:
Continuing through Friday morning.
Additional information:
Rain is expected to change over to snow this evening as temperatures rapidly fall below the freezing mark. In addition, northerly winds gusting 50 to 60 km/h will result in blowing snow. The combination of heavy snow and blowing snow may result in near zero visibility at times.
Conditions will improve from west to east through Friday morning.
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Travel will likely be challenging. Road closures are possible.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Dec 18, 2025 23:09
Until: Dec 19, 2025 15:09
winter storm
Hazardous winter storm continues through Friday morning.
What:
Total snowfall amounts of 30 to 50 cm with higher amounts possible.
Reduced visibility in heavy snow and blowing snow.
When:
Continuing through Friday morning.
Additional information:
Snow, at times heavy, will continue to affect the area. Northerly winds gusting 50 to 60 km/h, except up to 70 km/h south of Lake Nipigon will result in blowing snow. The combination of heavy snow and blowing snow may result in near zero visibility at times.
The highest snowfall amounts are expected east of Lake Nipigon and north of Highway 11 where total accumulations may exceed 50 cm locally.
Conditions will improve from west to east through Friday morning.
###
Roads and walkways will likely be very difficult to navigate. Visibility will likely be suddenly reduced to near zero at times. Road closures are possible.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Dec 18, 2025 22:27
Until: Dec 19, 2025 14:31
winter storm
Winter storm expected through Friday morning.
What:
Total snowfall amounts are expected to range from 10 cm near the shore of Lake Superior, including Wawa, to 15 to 20 cm for areas inland and over the higher terrain.
Reduced visibility in heavy snow and blowing snow.
Flash freeze.
When:
Continuing through Friday morning.
Additional information:
Rain or drizzle is expected to change back over to snow late this afternoon into this evening as temperatures rapidly fall below the freezing mark. In addition, northerly winds gusting 50 to 60 km/h will result in blowing snow beginning this evening.
Conditions will improve from west to east through Friday morning.
###
Travel will likely be challenging. Road closures are possible.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Dec 18, 2025 19:31
Until: Dec 19, 2025 11:31
winter storm
Winter storm conditions possible Thursday into Friday.
What:
Total snowfall amounts of 15 to 25 cm for higher terrain north of Wawa, and north of Chapleau to Cochrane.
Reduced visibility in heavy snow and blowing snow.
Flash freeze.
When:
Thursday afternoon through Friday afternoon.
Additional information:
A brief period of snow tonight into Thursday morning will be followed by drizzle. Precipitation will change back over to snow late Thursday afternoon into Thursday evening as temperatures rapidly fall below the freezing mark. In addition, northerly winds gusting 50 to 60 km/h will result in blowing snow beginning Thursday night.
For areas from Wawa to Cochrane and south, snowfall amounts are expected to range from 5 to 15 cm.
Conditions will improve from west to east through Friday.
###
Roads and walkways may be difficult to navigate. Visibility may be suddenly reduced to near zero at times.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Dec 17, 2025 18:08
Until: Dec 18, 2025 10:08
flash freeze
Temperatures are forecast to fall rapidly. Ponding water, slush, and any falling precipitation will freeze as the temperature drops.
What:
Temperatures rapidly falling below freezing leading to icy conditions.
When:
Early this morning.
Additional information:
A sharp cold front will cross the area early this morning leading to a rapid drop in temperatures to well below the freezing mark.
###
Roads and walkways may quickly become icy and slippery. Icy surfaces will likely form quickly and could be difficult to detect.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Dec 17, 2025 09:05
Until: Dec 17, 2025 14:01
flash freeze
Flash freeze conditions have ended.
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From: Dec 17, 2025 11:08
Until: Dec 17, 2025 12:08
