weather
Snowfall today.
What:
Snowfall amounts of 5 to 10 cm.
Reduced visibility at times in heavy snow.
When:
Ending early this afternoon.
Additional information:
Although modest snowfall amounts are expected, the timing of this snow will be problematic. Because the holiday season is now behind us, and traffic patterns should be closer to normal, this snow is expected to have more of an impact on the morning commute.
Travel will likely be challenging. Roads and walkways will likely be
difficult to navigate due to accumulating snow. There may be a
significant impact on rush hour traffic. Visibility will likely be
reduced at times. Allow extra time for travel.
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.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Jan 05, 2026 10:00
Until: Jan 05, 2026 20:04
weather
Snowfall Monday morning.
What:
Snowfall amounts of 5 to 10 cm.
Reduced visibility at times in heavy snow.
When:
Beginning overnight or early Monday morning and ending Monday afternoon.
Additional information:
Although modest snowfall amounts are expected, the timing of this snow will be problematic. Because the holiday season is now behind us, and traffic patterns should be closer to normal, this snow is expected to have more of an impact on the Monday morning commute.
Travel will likely be challenging. Roads and walkways will likely be
difficult to navigate due to accumulating snow. There may be a
significant impact on rush hour traffic. Visibility will likely be
reduced at times. Allow extra time for travel.
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.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Jan 04, 2026 22:04
Until: Jan 05, 2026 19:52
snow squall
Snow squalls continue to affect the region.
What:
Local snowfall amounts of 10 to 30 cm by Friday night.
Significantly reduced visibility in snow and blowing snow at times
When:
Now through Friday.
Additional information:
The snow squall currently impacting the Huron - Perth county will move northward this afternoon to impact primarily the northern Huron - Perth county and Mount Forest with additional snow squalls tonight and Friday.
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.
###
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.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Jan 01, 2026 15:57
Until: Jan 02, 2026 07:57
snow squall
Snow squalls continue to affect the region.
What:
Local snowfall amounts of 10 to 30 cm by Friday night.
Significantly reduced visibility in snow and blowing snow at times
When:
Now through Friday.
Additional information:
The strongest snow squall is currently impacting the northern portions of Huron and Perth counties. This snow squall will move northward this morning to impact primarily Grey and Bruce counties. Additional snow squall will be possible tonight and Friday.
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.
###
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.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Jan 01, 2026 10:28
Until: Jan 02, 2026 02:28
snow squall
###
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.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Jan 01, 2026 10:28
Until: Jan 02, 2026 02:28
snow squall
Snow squalls and blowing snow tonight.
What:
Near zero visibility at times in local blowing snow.
Local snowfall amounts of 5 to 10 cm.
When:
Continuing into Tuesday morning.
Additional information:
Lake effect snow squalls off Lake Huron have developed behind a sharp cold front. Blowing snow and poor visibility will be the primary concern as strong northwesterly wind gusts of 70 km/h are expected.
###
Travel will likely be hazardous. 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 29, 2025 23:20
Until: Dec 30, 2025 14:00
snow squall
Snow squalls and blowing snow today into Tuesday.
What:
Near zero visibility at times in local blowing snow.
Local snowfall amounts of 5 to 10 cm.
When:
This afternoon into Tuesday morning.
Additional information:
Lake effect snow squalls off Lake Huron have developed behind a sharp cold front. Widespread blowing snow conditions will be the primary concern across the region as northwesterly wind gusts of 70 to 90 km/h are expected today.
###
Travel will likely be hazardous. 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 29, 2025 19:58
Until: Dec 30, 2025 11:58
snow squall
Snow squalls are no longer expected.
###
From: Dec 30, 2025 03:39
Until: Dec 30, 2025 04:39
wind
###
From: Dec 29, 2025 23:51
Until: Dec 30, 2025 00:51
rainfall
Rain, heavy at times is expected. The frozen ground has a reduced ability to absorb this rainfall.
What:
Total rain and freezing rain amounts 20 to 40 mm
When:
Beginning near midday Sunday and ending early Monday morning.
Additional information:
Freezing rain will begin near midday Sunday, transitioning over to rain later Sunday afternoon or evening. Rain and freezing rain will be heavy at times through the afternoon and evening. The rain will ease early Monday morning.
If possible, clear storm drains of snow and ice.
###
Localized flooding is possible. Some roads may become impassable.
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 28, 2025 04:59
Until: Dec 28, 2025 20:59
rainfall
Rain, heavy at times is expected. The frozen ground has a reduced ability to absorb this rainfall.
What:
Total rain and freezing rain amounts 20 to 40 mm
When:
Beginning near midday Sunday and ending early Monday morning.
Additional information:
Freezing rain will begin near midday Sunday, transitioning over to rain later Sunday afternoon or evening. Rain and freezing rain will be heavy at times through the afternoon and evening. The rain will ease early Monday morning.
###
Localized flooding is possible. Some roads may become impassable.
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 28, 2025 04:40
Until: Dec 28, 2025 20:40
rainfall
Rain, heavy at times is expected. The frozen ground has a reduced ability to absorb this rainfall.
What:
Total rain and freezing rain amounts 20 to 40 mm
When:
Beginning near midday Sunday and ending early Monday morning.
Additional information:
Freezing rain will begin near midday Sunday transitioning over to rain later Sunday afternoon or evening. Rain and freezing rain will be heavy at times through the afternoon and evening. The rain will ease early Monday morning.
###
Localized flooding is possible. Some roads may become impassable.
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 27, 2025 23:17
Until: Dec 28, 2025 15:17
weather
Snow mixed with ice pellets today and risk of freezing rain.
What:
Snowfall and ice pellet accumulations 5 to 8 cm.
Risk of freezing rain.
When:
This afternoon into this evening.
Additional information:
A mix of ice pellets and snow is expected to continue this afternoon and end from west to east through this evening. Snowfall amounts may be reduced due to the mixing with ice pellets at times. There is also the risk of freezing rain this afternoon.
Roads and walkways could become icy and slippery. Travel could be difficult due to accumulating snow. Motorists should expect difficult winter driving conditions and adjust travel plans accordingly.
###
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 26, 2025 17:07
Until: Dec 27, 2025 04:09
weather
Snow mixed with ice pellets today and risk of freezing rain.
What:
Snowfall and ice pellet accumulations 5 to 8 cm.
Risk of freezing rain.
When:
This morning into this evening.
Additional information:
A mix of ice pellets and snow is expected to begin this morning and end from west to east through this evening. Snowfall amounts may be reduced due to the mixing with ice pellets at times. There is also the risk of freezing rain late this morning to this evening.
Roads and walkways could become icy and slippery. Travel could be difficult due to accumulating snow. Motorists should expect difficult winter driving conditions and adjust travel plans accordingly.
###
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 26, 2025 15:12
Until: Dec 27, 2025 04:03
weather
Snow mixed with ice pellets today.
What:
Snowfall and ice pellet accumulations 5 to 8 cm.
Risk of freezing rain.
When:
This morning into this evening.
Additional information:
A mix of ice pellets and snow is expected to begin this morning and end from west to east through this evening. Snowfall amounts may be reduced due to the mixing with ice pellets at times. There is also the risk of freezing rain from midday to this evening.
Roads and walkways could become icy and slippery. Travel could be difficult due to accumulating snow. Motorists should expect difficult winter driving conditions and adjust travel plans accordingly.
###
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 26, 2025 13:59
Until: Dec 27, 2025 04:02
weather
Snow mixed with ice pellets today.
What:
Snowfall and ice pellet accumulations 5 to 8 cm.
Risk of freezing rain.
When:
This morning into this evening.
Additional information:
A mix of ice pellets and snow is expected to begin this morning and end from west to east through this evening. Snowfall amounts may be reduced due to the mixing with ice pellets at times. There is also the risk of freezing rain late this morning to this evening.
Roads and walkways could become icy and slippery. Travel could be difficult due to accumulating snow. Motorists should expect difficult winter driving conditions and adjust travel plans accordingly.
###
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 26, 2025 14:16
Until: Dec 27, 2025 04:02
weather
Strong winds expected tonight.
What:
Northwesterly winds gusting to 70 km/h with isolated gusts to 80 km/h.
When:
Tonight.
Additional information:
Winds will diminish overnight for areas near Georgian Bay and early Wednesday morning for areas near Lake Ontario.
Local utility 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.
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 24, 2025 03:20
Until: Dec 24, 2025 14:03
weather
Strong winds expected tonight.
What:
Northwesterly winds gusting to 70 km/h with isolated gusts to 80 km/h.
When:
This evening into the overnight hours.
Additional information:
Winds will diminish overnight for areas near Georgian Bay and early Wednesday morning for areas near Lake Ontario.
Local utility 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.
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 23, 2025 15:50
Until: Dec 24, 2025 07:50
weather
Heavy lake effect snow expected this morning.
What:
Total snowfall accumulations of 5 to 10 cm.
Poor visibility in areas of heavy snow and blowing snow.
When:
This morning.
Additional information:
Lake effect snow off Lake Huron is expected to shift south through the area later this morning as winds become northerly.
###
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 14, 2025 12:03
Until: Dec 14, 2025 17:04
weather
Lake effect snow off Lake Erie this morning.
What:
Local snowfall amounts of 5 to 10 cm.
Reduced visibility in areas of heavier snow and blowing snow.
When:
This morning.
Additional information:
A band of lake enhanced snow off Lake Erie is expected this morning. Southwest winds gusting as high as 70 km/h will result in areas of blowing snow reducing visibility.
This lake effect snow band will move south of the area later this morning.
Travel may become hazardous.
Prepare for quickly changing and deteriorating travel conditions.
###
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 13, 2025 09:50
Until: Dec 13, 2025 18:04
weather
Lake effect snow off Lake Erie possible overnight into Saturday morning.
What:
Local snowfall amounts of 5 to 10 cm.
Reduced visibility in areas of heavier snow and blowing snow.
When:
Overnight into Saturday morning.
Additional information:
A band of lake enhanced snow off Lake Erie is expected to develop overnight. Increasing southwest winds gusting as high as 70 km/h will result in areas of blowing snow reducing visibility.
This lake effect snow band should dissipate later Saturday morning.
Travel may become hazardous.
Prepare for quickly changing and deteriorating travel conditions.
###
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 12, 2025 21:56
Until: Dec 13, 2025 18:02
weather
Lake effect snow off Lake Huron and Georgian expected.
What:
Poor visibility in heavy snow and local blowing snow.
Local snowfall amounts up to 5 cm possible by this evening.
When:
This morning into the afternoon.
Additional information:
Lake effect snow off Lake Huron and Georgian will push through the region this afternoon resulting in heavy snow and reduced visibility.
Travel may be hazardous. Visibility may be suddenly
reduced to near zero at times. Roads and walkways may be very
difficult to navigate due to accumulating snow.
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.
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 04, 2025 14:57
Until: Dec 05, 2025 02:03
snow squall
Intense lake effect snow squalls off Lake Huron and Georgian are expected today.
What:
Total local snowfall amounts of 20 to 40 cm.
Significantly reduced visibility in heavy snow and local blowing snow.
When:
Late this morning through this afternoon.
Additional information:
There is uncertainty with the exact locations of snow squalls that will develop and snowfall accumulations may be quite variable across the region. Latest indications are that Innisfil and areas along the Lake Simcoe shore will see amounts toward the higher end of the range with the rest of the region seeing closer to the lower end. The lake effect snow will be accompanied by northwesterly winds gusting 50 to 60 km/h. As a result, blowing snow will further reduce visibility. Conditions are expected to improve this evening.
###
Travel may be extremely hazardous. Visibility may be suddenly reduced to near zero at times. Roads and walkways may be very difficult to navigate due to accumulating snow. There may be a significant impact on rush hour traffic.
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 04, 2025 09:52
Until: Dec 05, 2025 01:52
snow squall
###
Travel may be extremely hazardous. Visibility may be suddenly reduced to near zero at times. Roads and walkways may be very difficult to navigate due to accumulating snow. There may be a significant impact on rush hour traffic.
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 04, 2025 03:54
Until: Dec 05, 2025 01:52
snow squall
Snow squalls are expected. Under the snow squall bands, visibility will be significantly reduced due to the heavy snow combined with blowing snow, and snow will quickly accumulate.
###
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.
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 04, 2025 03:54
Until: Dec 05, 2025 01:49
snow squall
Snow squalls are expected. Under the snow squall bands, visibility will be significantly reduced due to the heavy snow combined with blowing snow, and snow will quickly accumulate.
Lake effect snow squalls off Lake Huron and Georgian Bay today
What:
Total local snowfall amounts of 10 to 20 cm.
Reduced visibility in heavy snow and local blowing snow.
When:
Late this morning into this afternoon.
Additional information:
Lake effect snow will be accompanied by northwesterly winds gusting 50 to 60 km/h. As a result, blowing snow will further reduce visibility. Conditions are expected to improve this evening. There is some uncertainty with the exact locations of snow squalls that will develop and snowfall accumulations may be quite variable across the region.
###
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.
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 04, 2025 09:49
Until: Dec 05, 2025 01:49
snow squall
Intense lake effect snow squalls off Lake Huron and Georgian Bay develop this evening.
What:
Total local snowfall amounts of 20 to 40 cm.
Significantly reduced visibility in heavy snow and local blowing snow.
When:
Tonight into Thursday evening.
Additional information:
There is uncertainty with the exact locations of snow squalls that will develop and snowfall accumulations may be quite variable across the region. Latest indications are that Innisfil and areas along the Lake Simcoe shore will see amounts toward the higher end of the range with the rest of the region seeing closer to the lower end. The lake effect snow will be accompanied by northwesterly winds gusting 50 to 60 km/h. As a result, blowing snow will further reduce visibility. Conditions are expected to improve by Thursday evening.
###
Travel may be extremely hazardous. Visibility may be suddenly reduced to near zero at times. Roads and walkways may be very difficult to navigate due to accumulating snow. There may be a significant impact on rush hour traffic.
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 04, 2025 03:54
Until: Dec 04, 2025 19:54
snow squall
Snow squalls are expected. Under the snow squall bands, visibility will be significantly reduced due to the heavy snow combined with blowing snow, and snow will quickly accumulate.
Lake effect snow squalls off Lake Huron and Georgian Bay late tonight into Thursday.
What:
Total local snowfall amounts of 10 to 20 cm.
Reduced visibility in heavy snow and local blowing snow.
When:
Late tonight through Thursday afternoon.
Additional information:
Lake effect snow will be accompanied by northwesterly winds gusting 50 to 60 km/h. As a result, blowing snow will further reduce visibility. Conditions are expected to improve by Thursday evening. There is uncertainty with the exact locations of snow squalls that will develop and snowfall accumulations may be quite variable across the region.
###
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.
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 04, 2025 03:54
Until: Dec 04, 2025 19:54
snow squall
Lake effect snow squalls off Lake Huron and Georgian Bay late tonight into Thursday.
What:
Total local snowfall amounts of 10 to 20 cm.
Reduced visibility in heavy snow and local blowing snow.
When:
Late tonight through Thursday afternoon.
Additional information:
Lake effect snow will be accompanied by northwesterly winds gusting 50 to 60 km/h. As a result, blowing snow will further reduce visibility. Conditions are expected to improve by Thursday evening. There is uncertainty with the exact locations of snow squalls that will develop and snowfall accumulations may be quite variable across the region.
###
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.
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 03, 2025 21:04
Until: Dec 04, 2025 13:04
snow squall
Intense lake effect snow squalls off Lake Huron and Georgian Bay develop this evening.
What:
Total local snowfall amounts of 20 to 40 cm.
Significantly reduced visibility in heavy snow and local blowing snow.
When:
This evening into Thursday evening.
Additional information:
There is uncertainty with the exact locations of snow squalls that will develop and snowfall accumulations may be quite variable across the region. Latest indications are that Innisfil and areas along the Lake Simcoe shore will see amounts toward the higher end of the range with the rest of the region seeing closer to the lower end. The lake effect snow will be accompanied by northwesterly winds gusting 50 to 60 km/h. As a result, blowing snow will further reduce visibility. Conditions are expected to improve by Thursday evening.
###
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 03, 2025 20:53
Until: Dec 04, 2025 12:53
weather
Strong winds expected today.
What:
Strong southwest winds with gusts of 60 to 70 km/h possible.
When:
Beginning later this morning and easing in the evening as winds become more northwesterly.
Local utility 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 30, 2025 14:32
Until: Dec 01, 2025 05:01
weather
Snow and strong winds expected today.
What:
Additional snowfall amounts of 2 to 4 cm leading to challenging travel conditions.
Strong southwest winds with gusts of 60 to 70 km/h possible.
When:
Snow will ease later this morning to scattered flurries or rain showers.
Strong winds will begin later this morning and ease in the evening as winds become more northwesterly.
Additional Information:
Snow is expected to ease to scattered flurries or transition over to rain showers later this morning. An additional 2 to 4 cm is possible.
Local utility outages are possible. 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 30, 2025 10:31
Until: Dec 01, 2025 02:31
weather
###
From: Nov 30, 2025 22:59
Until: Nov 30, 2025 23:59
snowfall
Snow continues today.
What:
Additional snowfall amounts of 2 to 4 cm.
When:
Continuing this morning and ending near midday.
Additional information:
The snow will ease near midday and transition over to scattered flurries which may mix with rain showers.
###
Travel will likely be challenging. Roads and walkways will likely be difficult to navigate due to accumulating snow. Visibility will likely be reduced 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 30, 2025 15:28
Until: Nov 30, 2025 20:00
snow squall
Snow squalls may return Friday.
What:
Local snowfall amounts of 5 to 15 cm.
When:
Friday.
Additional information:
Lake effect snow bands off Lake Huron have moved out of the region as of late this evening, but may return on Friday.
Travel may be hazardous.
###
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 28, 2025 04:12
Until: Nov 28, 2025 20:12
snow squall
Snow squalls beginning today.
What:
Total snowfall amounts of 15 to 30 cm with locally higher amounts possible.
Near zero visibility at times in heavy snow and local blowing snow.
Strong winds gusting to 70 km/h.
When:
Beginning today and possibly continuing into Saturday.
Additional information:
Lake effect snow off of Lake Huron is expected to intensify today. The lake effect bands may extend well inland, particularly today and Friday. Westerly winds gusting to 60 or 70 km/h will result in areas of near zero visibility at times in blowing snow.
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Roads and walkways may be very 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 27, 2025 09:47
Until: Nov 28, 2025 07:07
snow squall
Snow squalls beginning Thursday.
What:
Total snowfall amounts of 15 to 30 cm with locally higher amounts possible.
Near zero visibility at times in heavy snow and local blowing snow.
Strong winds gusting to 70 km/h.
When:
Beginning Thursday and possibly continuing into Saturday.
Additional information:
Lake effect snow off of Lake Huron is expected to develop tonight and intensify into snow squalls on Thursday. These snow squalls may extend well inland, particularly Thursday and Friday. Westerly winds gusting to 60 or 70 km/h will result in areas of near zero visibility at times in blowing snow.
###
Roads and walkways may be very 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 27, 2025 03:19
Until: Nov 27, 2025 19:19
snow squall
Snow squalls possible beginning Thursday.
What:
Total snowfall amounts of 15 to 30 cm with locally higher amounts possible.
Near zero visibility at times in heavy snow and local blowing snow.
When:
Beginning Thursday and possibly continuing into Saturday.
Additional information:
Lake effect snow off of Lake Huron is expected to develop tonight and intensify into snow squalls on Thursday. Strong winds are also expected and a special weather statement is in effect. These strong winds will further reduce visibility in local blowing snow.
###
Roads and walkways may be very 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 26, 2025 15:37
Until: Nov 27, 2025 12:55
weather
Strong winds continue. Lake effect snow expected Thursday night.
What:
Strong winds gusting 70 to 80 km/h.
Reduced visibility in snow and local blowing snow.
When:
Strong winds ending Thursday night or Friday morning.
Lake effect snow Thursday evening through Friday morning.
Additional information:
Strong southwest winds will shift to the west tonight and then to the northwest Thursday afternoon or evening. In addition, lake effect snow may move through the area Thursday night and possibly return Friday afternoon. Snowfall accumulations are not expected to be significant, but visibility may be reduced in snow and local blowing snow.
Local utility outages are possible. High-sided vehicles will be pushed around by the wind. Loose objects may be tossed by the wind. If visibility is reduced while driving, turn on your lights and maintain a safe following distance.
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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 26, 2025 18:29
Until: Nov 27, 2025 10:29
snow squall
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Roads and walkways may be very 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 26, 2025 18:15
Until: Nov 27, 2025 10:15
snow squall
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From: Nov 27, 2025 03:19
Until: Nov 27, 2025 03:19
