fog
###
Visibility will likely be suddenly 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.
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 10:41
Until: Dec 18, 2025 18:30
fog
Dense fog has developed and will dissipate this morning.
###
Visibility will likely be suddenly 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.
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 10:41
Until: Dec 18, 2025 18:30
snow squall
Snow squalls continue today.
What:
Additional snowfall accumulations of 5 to 10 cm today with locally higher amounts possible.
Storm total accumulations of 10 to 20 cm.
Poor visibility in areas of heavy snow and blowing snow.
When:
Continuing through this afternoon.
Additional information:
Lake effect snow squalls off Georgian Bay will continue to affect western portions of the region today before weakening this 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.
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 13:36
Until: Dec 15, 2025 01:01
snow squall
Lake effect snow will continue through the day. However, snow squall conditions are no longer expected.
###
From: Dec 14, 2025 18:23
Until: Dec 14, 2025 19:23
weather
Lake effect snow off Lake Ontario possible this morning.
What:
Local snowfall amounts of 5 to 10 cm.
Reduced visibility in areas of heavier snow.
When:
This morning.
Additional information:
A band of lake enhanced snow off Lake Ontario is expected to develop this morning. Conditions should improve by this afternoon.
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 11:16
Until: Dec 13, 2025 20:01
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 15:08
Until: Dec 13, 2025 18:00
weather
Lake effect snow has moved out of the area.
###
From: Dec 13, 2025 15:31
Until: Dec 13, 2025 16:31
snow squall
Snow squalls possible today.
What:
Total snowfall amounts near 15 cm, particularly for areas north of Newmarket and west of Georgina.
Significantly reduced visibility in heavy snow and local blowing snow.
When:
This afternoon through this evening.
Additional information:
Snow squalls will affect areas to the northwest of York Region today, but may extend into the region at times.
Snow squalls are expected to weaken this evening. Snowfall amounts will be highly variable across the area.
Northwesterly winds gusting to near 50 km/h will result in local blowing snow further reducing visibility.
###
Travel may be hazardous. 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 11, 2025 14:05
Until: Dec 12, 2025 04:02
snow squall
Snow squalls expected today.
What:
Total snowfall amounts near 15 cm, particularly for areas north of Newmarket and west of Georgina.
Significantly reduced visibility in heavy snow and local blowing snow.
When:
This morning through this evening.
Additional information:
Snow squalls are expected to weaken this evening. Snowfall amounts will be highly variable across the area.
Northwesterly winds gusting to near 50 km/h will result in local blowing snow further reducing visibility.
###
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 11, 2025 11:58
Until: Dec 12, 2025 03:58
snow squall
Snow squalls expected today.
What:
Total snowfall amounts of 15 to 30 cm, particularly for areas north of Newmarket and west of Georgina.
Significantly reduced visibility in heavy snow and local blowing snow.
When:
This morning through this evening.
Additional information:
Snow squalls are expected to weaken this evening. Snowfall amounts will be highly variable across the area.
Northwesterly winds gusting to near 50 km/h will result in local blowing snow further reducing visibility.
###
Travel may be extremely hazardous. 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.
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 11, 2025 08:45
Until: Dec 12, 2025 00:45
snow squall
Snow squalls are expected tonight through Thursday.
What:
Total local snowfall amounts of 20 to 35 cm. The highest amounts are expected to remain north of Newmarket and west of Georgina.
Significantly reduced visibility in heavy snow and local blowing snow.
When:
Tonight through Thursday.
Additional information:
Snow squalls are expected to affect the area tonight through Thursday before weakening Thursday night. Snowfall amounts will be highly variable across the area.
###
Travel may be extremely hazardous. 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.
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 11, 2025 03:20
Until: Dec 11, 2025 19:20
weather
Lake effect snow off Georgian Bay briefly affecting the area tonight.
What:
Slippery conditions making travel hazardous.
Reduced visibility in snow and local blowing snow.
When:
Tonight.
Additional information:
A band of lake effect snow off Georgian Bay will gradually move east across the area tonight. Temperatures have rapidly fallen this evening making for possible hazardous travel due to slippery conditions. Snowfall amounts are expected to be limited to 2 to 4 cm locally.
###
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 11, 2025 03:03
Until: Dec 11, 2025 11:02
weather
Significant snowfall expected.
What:
Total snowfall amounts of up to 10 cm.
Reduced visibility in heavy snow and blowing snow.
When:
Beginning overnight and ending Wednesday morning or afternoon.
Additional Information:
An Alberta clipper will bring snow across the area which may be heavy at times beginning overnight. The snow is expected to taper to rain showers or flurries from southwest to northeast Wednesday.
Travel may become difficult at times. Allow extra time for travel.
###
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 09, 2025 19:50
Until: Dec 10, 2025 18:01
weather
Significant snowfall expected.
What:
Total snowfall amounts of up to 10 cm.
Reduced visibility in heavy snow and blowing snow.
When:
Beginning overnight and ending Wednesday morning or afternoon.
Additional Information:
Snow will continue this evening with some accumulation possible. A more significant snowfall is expected Wednesday. An Alberta clipper will bring snow across the area which may be heavy at times beginning overnight. The snow is expected to taper to rain showers or flurries from southwest to northeast Wednesday.
Travel may become difficult at times. Allow extra time for travel.
###
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 09, 2025 20:13
Until: Dec 10, 2025 12:13
snowfall
Heavy snow and local blowing snow expected.
What:
Total snowfall amounts of 10 to 15 cm.
Reduced visibility in heavy snow and blowing snow.
When:
Beginning overnight and ending Wednesday afternoon.
Additional Information:
Snow will continue this evening with some accumulation possible. A more significant snowfall is expected Wednesday. An Alberta clipper will bring snow across the area which may be heavy at times beginning overnight. The snow is expected to taper to scattered flurries or rain showers from southwest to northeast Wednesday afternoon. Lesser snowfall amounts are expected near Lake Ontario where a transition to rain is possible.
###
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.
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 09, 2025 19:15
Until: Dec 10, 2025 11:30
weather
Lake effect snow off Georgian Bay ending tonight.
What:
Local snowfall accumulations of 5 to 15 cm.
Reduced visibility in snow and local blowing snow.
When:
Early tonight.
Additional information:
Northwesterly winds gusting to near 50 km/h may result in local blowing snow. Lake effect snow will weaken tonight.
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 08, 2025 02:13
Until: Dec 08, 2025 07:05
weather
Lake effect snow off Georgian Bay continues into this evening.
What:
Local snowfall accumulations of 5 to 15 cm.
Reduced visibility in snow and local blowing snow.
When:
Continuing into this evening.
Additional information:
Northwesterly winds gusting to near 50 km/h may result in local blowing snow. Lake effect snow will weaken through the evening.
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 08, 2025 00:35
Until: Dec 08, 2025 07:03
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 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
###
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
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:
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 the bulk of the accumulation should be along and north of a line from Newmarket to Uxbridge to Port Perry. 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 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 23:14
Until: Dec 04, 2025 15:14
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.
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 23:14
Until: Dec 04, 2025 15:14
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:
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 the bulk of the accumulation should be along and north of a line from Newmarket to Uxbridge to Port Perry. 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 20:54
Until: Dec 04, 2025 12:54
snow squall
###
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 12:54
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 70 to 80 km/h possible.
When:
Ending this evening.
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 18:24
Until: Dec 01, 2025 05:05
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
Strong winds expected today.
What:
Strong southwest winds with gusts of 70 to 80 km/h possible.
When:
Beginning late this morning and easing this 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 10:26
Until: Dec 01, 2025 02:26
weather
Significant snow and strong winds expected Sunday.
What:
Total snowfall amounts of 5 to 10 cm leading to challenging travel conditions.
Strong southwest winds with gusts of 60 to 70 km/h possible.
When:
Snow will begin late tonight and taper off Sunday morning.
Strong winds will begin Sunday morning and ease in the evening as winds become more northwesterly.
Additional Information:
On Sunday morning, snow is expected to mix with or transition over to rain in most areas. If the precipitation remains as snow, then accumulations may exceed 10 cm.
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 29, 2025 22:39
Until: Nov 30, 2025 14:39
weather
Strong winds expected Sunday.
What:
Strong southwest winds with gusts of 70 to 80 km/h possible.
When:
Beginning Sunday 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 29, 2025 22:35
Until: Nov 30, 2025 14:35
snow squall
###
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 29, 2025 03:01
Until: Nov 29, 2025 10:59
snow squall
Snow squalls continue.
What:
Poor visibility in areas of heavy snow and blowing snow.
Additional snowfall amounts near 5 cm.
When:
Continuing tonight.
Additional information:
Lake effect snow off of Georgian Bay will continue to affect areas north of Highway 407 tonight. Lake effect snow will weaken early Saturday 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 29, 2025 03:27
Until: Nov 29, 2025 10:59
snow squall
Snow squalls continue.
What:
Poor visibility in areas of heavy snow and blowing snow.
Additional snowfall amounts near 5 cm.
When:
Continuing this evening.
Additional information:
Lake effect snow off of Georgian Bay continues. Lake effect snow will weaken through the evening.
###
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 29, 2025 03:01
Until: Nov 29, 2025 05:29
weather
Lake effect snow possible today.
What:
Reduced visibility in areas of heavier snow and local blowing snow.
When:
Today.
Additional information:
Lake effect snow bands from Lake Huron may affect the area today. Snowfall accumulations are not expected to be overly significant, but visibility may be reduced in brief bursts of heavier snow and local blowing snow. Hazardous travel conditions are possible as a result.
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.
From: Nov 28, 2025 09:32
Until: Nov 29, 2025 01:05
snow squall
Snow squalls to affect the area today.
What:
Local snowfall amounts of 10 to 30 cm.
Poor visibility in areas of heavy snow and blowing snow.
When:
Continuing today, and diminishing this evening.
Additional information:
Lake effect snow off of Georgian Bay will affect portions of the region today. The morning and afternoon commute will likely be significantly impacted.
###
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 28, 2025 08:57
Until: Nov 29, 2025 00:57
weather
Lake effect snow possible tonight and Friday.
What:
Reduced visibility in areas of heavier snow and local blowing snow.
When:
Tonight and Friday.
Additional information:
Lake effect snow from Lake Huron may affect the area tonight and Friday. Snowfall accumulations are not expected to be overly significant, but visibility may be reduced in brief bursts of heavier snow and local blowing snow. Hazardous travel conditions are possible as a result.
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.
From: Nov 28, 2025 03:34
Until: Nov 28, 2025 19:34
snow squall
Snow squalls later tonight into Friday.
What:
Local snowfall amounts of 10 to 30 cm.
Poor visibility in areas of heavy snow and blowing snow.
When:
Later tonight through Friday.
Additional information:
Lake effect snow off of Georgian Bay is expected to move into the region later tonight and persist into Friday. The Friday morning and afternoon commute will likely be significantly impacted.
###
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 28, 2025 01:15
Until: Nov 28, 2025 17:15
weather
Lake effect snow possible tonight.
What:
Reduced visibility in snow and local blowing snow.
When:
Tonight.
Additional information:
Lake effect snow may affect portions of the Greater Toronto tonight. Snowfall accumulations are not expected to be significant, but visibility may be reduced in brief bursts of heavier snow and local blowing snow. Hazardous travel conditions are possible as a result.
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.
From: Nov 28, 2025 01:04
Until: Nov 28, 2025 12:01
weather
Lake effect snow possible today and tonight. Gusty winds diminishing.
What:
Reduced visibility in snow and local blowing snow.
Westerly winds gusting to 70 km/h diminishing this morning.
When:
Today and tonight.
Additional information:
Lake effect snow may affect portions of the Greater Toronto Area today and tonight. Snowfall accumulations are not expected to be significant, but visibility may be reduced in brief bursts of heavier snow and local blowing snow. Hazardous travel conditions are possible as a result.
Gusty westerly winds to 70 km/h will diminish somewhat this morning, but breezy conditions are expected to persist through Friday.
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.
From: Nov 27, 2025 09:14
Until: Nov 28, 2025 01:14
snow squall
Snow squalls possible today into Friday.
What:
Local snowfall amounts possibly exceeding 15 cm.
Poor visibility in areas of heavy snow and blowing snow.
When:
Today through Friday.
Additional information:
Bands of lake effect snow off Lake Huron and Georgian Bay may affect portions of the region from time to time through Friday.
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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 27, 2025 08:50
Until: Nov 28, 2025 00:50
weather
Strong winds continue. Lake effect snow expected on Thursday.
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 afternoon and evening.
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 afternoon and evening. 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 18:26
Until: Nov 27, 2025 13:15
