snow squall
###
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.
From: Nov 16, 2025 14:25
Until: Nov 17, 2025 20:59
snow squall
Snow squalls expected off Georgian Bay.
What:
5 to 10 cm of additional local snowfall today.
When:
Today.
Additional information:
Lake effect snow off Georgian Bay will continue today, though the heaviest bands may shift east of Barrie by this afternoon.
###
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.
From: Nov 17, 2025 09:42
Until: Nov 17, 2025 20:59
snow squall
Snow squalls expected off Georgian Bay.
What:
Total snowfall accumulations of 15 to 30 cm, with the highest amounts expected in the most persistent lake effect snow bands.
When:
Tonight through Monday morning.
Additional information:
Lake effect snow off Georgian Bay will intensify tonight. Conditions are expected to improve by near noon on Monday, although flurries will likely continue into Monday afternoon.
###
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.
From: Nov 16, 2025 20:37
Until: Nov 17, 2025 18:59
weather
Winter weather travel advisory in effect.
What:
Bursts of heavy snow resulting in reduced visibility at times.
Local snowfall accumulations near 2 cm.
When:
Early this morning.
Additional information:
These bursts of heavy lake effect snow may impact the morning commute.
###
Travel may be hazardous due to sudden changes in the weather.
For road conditions and other traveller information from the Ministry of Transportation, visit https://www.ontario.ca/511, https://www.twitter.com/511Ontario, or call 5-1-1.
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.
From: Nov 17, 2025 09:54
Until: Nov 17, 2025 16:06
weather
Winter weather travel advisory in effect.
What:
Bursts of heavy snow resulting in reduced visibility at times.
Local snowfall accumulations of 2 to 4 cm.
When:
Late tonight through early Monday morning.
Additional information:
Lake effect snow off Georgian Bay will impact the area. The Monday morning commute may be impacted.
###
Travel may be hazardous due to sudden changes in the weather.
For road conditions and other traveller information from the Ministry of Transportation, visit https://www.ontario.ca/511, https://www.twitter.com/511Ontario, or call 5-1-1.
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.
From: Nov 17, 2025 07:12
Until: Nov 17, 2025 16:01
weather
###
From: Nov 17, 2025 10:50
Until: Nov 17, 2025 11:50
snow squall
Snow squalls expected off Georgian Bay.
What:
Total snowfall accumulations of 15 to 30 cm, with the highest amounts expected in the most persistent lake effect snow bands.
When:
This afternoon through Monday morning.
Additional information:
Lake effect snow off Georgian Bay will intensify through the afternoon. Conditions are expected to improve by near noon on Monday, although flurries will likely continue into Monday afternoon.
###
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.
From: Nov 16, 2025 14:25
Until: Nov 17, 2025 06:25
snow squall
Snow squalls are expected.
What:
Total snowfall accumulations of 10 to 25 cm.
Significantly reduced visibility in heavy snow.
When:
Late this afternoon through Monday morning.
Additional information:
Lake effect snow will develop off of Georgian Bay later today. A snow squall band is expected to form late in the day and last through the night.
###
Visibility may 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.
From: Nov 16, 2025 10:08
Until: Nov 17, 2025 02:08
snow squall
###
Visibility may 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.
From: Nov 16, 2025 10:08
Until: Nov 17, 2025 02:08
snow squall
This snow squall warning has been upgraded from a winter weather travel advisory that was previously in effect.
Lake effect snow tonight.
What:
Local snowfall accumulations near 15 cm.
Reduced visibility in snow and blowing snow.
When:
Continuing into Tuesday morning.
Additional information:
Lake effect snow off Georgian Bay has intensified over the area. This lake effect snow is expected to weaken and shift east of the area by Tuesday morning.
###
Travel will likely be hazardous. Visibility will likely 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.
From: Nov 11, 2025 03:33
Until: Nov 11, 2025 18:03
weather
Winter weather travel advisory in effect.
Hazards:
Reduced visibility in bursts of heavy snow.
Timing:
This morning.
Discussion:
Periods of heavy snow and reduced visibility may affect areas east of Highway 400 this morning.
###
Motorists should expect hazardous winter driving conditions and adjust travel plans accordingly. There may be a significant impact on rush hour traffic.
For road conditions and other traveller information from the Ministry of Transportation, visit https://www.ontario.ca/511, https://www.twitter.com/511Ontario, or call 5-1-1.
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.
From: Nov 11, 2025 09:53
Until: Nov 11, 2025 18:02
snow squall
This snow squall warning has been upgraded from a winter weather travel advisory that was previously in effect.
Lake effect snow tonight.
What:
Local snowfall accumulations near 15 cm, with locally higher amounts possible.
Reduced visibility in snow and blowing snow.
When:
Continuing into Tuesday morning.
Additional information:
Lake effect snow off Georgian Bay has intensified over the area. This lake effect snow is expected to weaken and shift east of the area by Tuesday morning.
###
Travel will likely be hazardous. Visibility will likely be suddenly reduced to near zero at times. Roads and walkways will likely be difficult to navigate due to accumulating snow.
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.
From: Nov 11, 2025 04:14
Until: Nov 11, 2025 18:02
weather
Winter weather travel advisory in effect.
Hazards:
Reduced visibility in bursts of heavy snow.
Timing:
This morning.
###
Motorists should expect hazardous winter driving conditions and adjust travel plans accordingly. There may be a significant impact on rush hour traffic.
For road conditions and other traveller information from the Ministry of Transportation, visit https://www.ontario.ca/511, https://www.twitter.com/511Ontario, or call 5-1-1.
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.
From: Nov 11, 2025 12:12
Until: Nov 11, 2025 18:01
weather
Winter weather travel advisory in effect.
Hazards:
Localized snowfall accumulations of 5 to 10 cm.
Poor visibility in bursts of heavier snow.
Timing:
Continuing through Tuesday morning.
Discussion:
Heavy lake effect snow off Georgian Bay will continue to affect areas east of Fergus tonight through Tuesday morning.
###
Motorists should expect hazardous winter driving conditions and adjust travel plans accordingly. Travel may be hazardous due to sudden changes in the weather.
For road conditions and other traveller information from the Ministry of Transportation, visit https://www.ontario.ca/511, https://www.twitter.com/511Ontario, or call 5-1-1.
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.
From: Nov 11, 2025 03:48
Until: Nov 11, 2025 17:08
weather
Winter weather travel advisory in effect.
Hazards:
Localized snowfall accumulations of 5 to 10 cm.
Poor visibility in bursts of heavier snow.
Timing:
Tonight into Tuesday morning.
Discussion:
Cold north to northwest winds off Lake Huron and Georgian Bay will affect the area tonight into Tuesday morning. The Tuesday morning commute may be significantly impacted, particularly for areas southeast of Georgian Bay including the Highway 400 corridor.
Conditions should improve by Tuesday afternoon.
###
Motorists should expect hazardous winter driving conditions and adjust travel plans accordingly. There may be a significant impact on rush hour traffic.
For road conditions and other traveller information from the Ministry of Transportation, visit https://www.ontario.ca/511, https://www.twitter.com/511Ontario, or call 5-1-1.
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.
From: Nov 10, 2025 23:07
Until: Nov 11, 2025 15:07
snow squall
Lake effect snow intensifying tonight.
What:
Heavy lake effect snow. Total amounts of 15 to 30 cm, with locally higher amounts possible.
When:
Continuing into Tuesday morning.
Additional information:
Cold northerly winds are resulting in lake effect flurries off Georgian Bay, with the intensity expected to increase tonight .
The majority of the activity is expected to affect areas south of Georgian Bay, but as winds become more northwesterly later tonight into Tuesday morning, areas to its southeast including the city of Barrie may get affected
Conditions should improve Tuesday afternoon.
###
Travel will likely be hazardous. Visibility will likely be suddenly reduced to near zero at times. Roads and walkways will likely be difficult to navigate due to accumulating snow.
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.
From: Nov 10, 2025 21:21
Until: Nov 11, 2025 13:21
snow squall
###
From: Nov 11, 2025 09:52
Until: Nov 11, 2025 09:52
snow squall
Lake effect snow intensifying later today.
What:
Heavy lake effect snow. Total amounts of 15 to 30 cm, with locally higher amounts possible.
When:
Today through Tuesday morning.
Additional information:
Cold northerly winds are resulting in the development of lake effect flurries off Georgian Bay, with the intensity expected to increase later today or tonight .
The majority of the activity is expected to affect areas south of Georgian Bay, but as winds become more northwesterly later tonight into Tuesday morning, areas to its southeast including the city of Barrie may get affected
Conditions should improve Tuesday afternoon.
###
Travel will likely be hazardous. Visibility will likely be suddenly reduced to near zero at times. Roads and walkways will likely be difficult to navigate due to accumulating snow.
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.
From: Nov 10, 2025 14:10
Until: Nov 11, 2025 06:10
snow squall
###
Travel may be hazardous. Visibility may be suddenly reduced to near zero at times. Roads and walkways may be difficult to navigate due to accumulating snow.
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.
From: Nov 10, 2025 10:06
Until: Nov 11, 2025 02:06
snow squall
Snow squalls today through Tuesday morning.
What:
Heavy lake effect snow. Total amounts of 15 to 30 cm, with locally higher amounts possible.
When:
Today through Tuesday morning.
Additional information:
Colder northerly winds will result in the development of lake effect snow off Georgian Bay Monday, with the intensity expected to increase later in the day or tonight .
The majority of the activity is expected to affect areas south of Georgian Bay, but as winds become more northwesterly tonight, areas to its southeast including the city of Barrie may get affected.
Conditions should improve by Tuesday afternoon.
###
Travel may be hazardous. Visibility may be suddenly reduced to near zero at times. Roads and walkways may be difficult to navigate due to accumulating snow.
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.
From: Nov 10, 2025 10:06
Until: Nov 11, 2025 02:06
weather
Snow tapering off tonight with icy and slippery roads likely.
What:
A few additional centimetres of snowfall possible this evening.
Icy and slippery road conditions.
When:
Continuing through this evening.
Additional information:
Significant snowfall accumulations have been reported across much of the region today, particularly on elevated and grassy surfaces. Although the snowfall intensity has mostly decreased as of late afternoon, icy and slippery road conditions are likely this evening as temperatures continue to drop.
Motorists should expect difficult winter driving conditions and adjust travel plans accordingly. Poor weather conditions may contribute to transportation delays.
###
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.
From: Nov 09, 2025 21:54
Until: Nov 10, 2025 09:07
weather
Accumulating snow likely on Sunday.
What:
Snowfall amounts of 2 to 10 cm.
When:
Beginning Sunday morning and continuing through Sunday evening.
Additional information:
A low pressure system will bring snowfall to parts of southern Ontario on Sunday.
Confidence remains low with respect to the strength and track of this weather system, and as such the areas affected and snowfall amounts may continue to change.
Motorists should expect difficult winter driving conditions and adjust travel plans accordingly. Poor weather conditions may contribute to transportation delays.
###
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.
From: Nov 08, 2025 21:04
Until: Nov 09, 2025 13:04
frost
Frost may damage some crops in frost-prone areas.
Temperatures are expected to fall to near the freezing mark again tonight.
###
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.
From: Oct 28, 2025 13:11
Until: Oct 29, 2025 05:11
frost
Frost may damage some crops in frost-prone areas.
Temperatures are expected to fall to near the freezing mark early this morning.
###
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.
From: Oct 28, 2025 08:47
Until: Oct 28, 2025 16:00
frost
Frost may damage some crops in frost-prone areas.
Temperatures are expected to fall to near the freezing mark again tonight into early Tuesday morning.
###
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.
From: Oct 27, 2025 16:14
Until: Oct 28, 2025 08:14
frost
Frost may damage some crops in frost-prone areas.
Temperatures are expected to fall to the freezing mark overnight into early Sunday morning.
###
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.
From: Oct 25, 2025 19:41
Until: Oct 26, 2025 11:41
frost
Frost may damage some crops in frost-prone areas.
Temperatures are expected to drop to near zero degrees Celsius tonight into early Thursday morning.
###
Frost advisories are issued when temperatures are expected to reach the freezing mark during the growing season, leading to potential damage and destruction to plants and crops.
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.
From: Oct 09, 2025 01:48
Until: Oct 09, 2025 13:59
