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
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 18:59
weather
Winter weather travel advisory in effect.
Winter weather travel advisory in effect for this afternoon through Monday morning.
What:
Local snowfall accumulations of 5 to 10 cm.
When:
Late this afternoon through Monday morning.
Additional information:
Lake effect snow off Georgian Bay will impact the area, particularly this evening through early Monday morning. Conditions are expected to improve by near noon on Monday, although flurries will likely continue into Monday afternoon. 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 16, 2025 14:38
Until: Nov 17, 2025 06:38
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
Snow squalls are expected.
What:
Total snowfall accumulations of 10 to 25 cm.
Significantly reduced visibility in heavy snow.
When:
Late Sunday through Monday morning.
Additional information:
Lake effect snow will develop off of Georgian Bay beginning Sunday. 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 02:46
Until: Nov 16, 2025 18:46
snow squall
###
From: Nov 11, 2025 09:52
Until: Nov 16, 2025 14:25
weather
Winter weather travel advisory in effect.
What:
Local snowfall amounts near 10 cm.
Poor visibility in bursts of heavy snow.
When:
Tonight through Thursday morning.
Additional Information:
Lake effect showers off Lake Huron will begin to mix with flurries overnight, with areas over the Dundalk Highlands expected to transition to snow. The highest snowfall amounts are expected to fall over the areas of higher terrain.
###
Motorists should expect hazardous winter driving conditions and adjust travel plans accordingly.
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 13, 2025 06:08
Until: Nov 13, 2025 19:04
weather
Winter weather travel advisory in effect.
What:
Additional local snowfall amounts of 5 cm, giving total amounts near 10 cm.
Poor visibility in bursts of heavy snow.
When:
Continuing this morning and ending near noon.
Additional Information:
Lake effect flurries off Lake Huron continue to bring locally heavy snowfall over the Dundalk Highlands this morning. The highest snowfall amounts are expected to fall over the areas of higher terrain.
###
Motorists should expect hazardous winter driving conditions and adjust travel plans accordingly.
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 13, 2025 10:03
Until: Nov 13, 2025 19:03
weather
###
From: Nov 13, 2025 11:53
Until: Nov 13, 2025 12:53
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 20:01
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
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
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
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
weather
Accumulating snow likely today.
What:
Snowfall amounts of 5 to 10 cm. Amounts may be lesser near the shore of Lake Ontario.
When:
This morning through this evening.
Additional information:
Precipitation may begin as rain for locations near the shore of Lake Ontario and the Niagara Peninsula before changing to snow. Higher snowfall amounts may be possible over the higher terrain of the Niagara Escarpment.
There remains uncertainty with respect to the track of this weather system, and as such forecast snowfall amounts may 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 09, 2025 10:22
Until: Nov 10, 2025 02:22
weather
Accumulating snow likely today.
What:
Snowfall amounts of 5 to 10 cm. Amounts may be lesser near the shores of Lake Erie and Lake Ontario.
When:
This morning through this evening.
Additional information:
Precipitation may begin as rain before changing to snow for areas adjacent to Lake Erie and Lake Ontario. For these areas, snowfall amounts may be lesser.
There remains uncertainty with respect to the track of this weather system, and as such forecast snowfall amounts may 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 09, 2025 06:51
Until: Nov 09, 2025 22:51
weather
Gusty winds this evening.
What:
Northwesterly winds gusting 70 to 80 km/h.
When:
This evening.
Additional information:
Strong wind gusts can toss loose objects and cause tree branches to break. Power outages 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 05, 2025 21:50
Until: Nov 06, 2025 05:02
frost
Frost may damage some crops in frost-prone areas.
Temperatures are expected to fall to near the freezing mark again tonight.
###
Damage to plants, trees, and crops is 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: Oct 28, 2025 16:19
Until: Oct 29, 2025 12:51
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.
###
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 26, 2025 19:28
Until: Oct 28, 2025 13:14
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 13:14
frost
Frost may damage some crops in frost-prone areas.
Temperatures are expected to fall to the freezing mark overnight into early Monday 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 26, 2025 14:34
Until: Oct 27, 2025 16:00
