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
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
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
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: Dec 14, 2025 09:21
Until: Dec 14, 2025 15:59
snow squall
Snow squalls continue this morning.
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:
This morning.
Additional information:
Lake effect snow squalls off Georgian Bay are expected to shift south of the area this morning as winds become northerly.
###
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 09:21
Until: Dec 14, 2025 15:59
snow squall
Snow squalls weakening later tonight.
What:
Total snowfall amounts of 30 to 50 cm. Locally higher amounts in excess of 75 cm possible in the most persistent lake effect snow bands.
Significantly reduced visibility in heavy snow and local blowing snow.
When:
Tapering off later tonight.
Additional information:
An intense and nearly stationary band of lake effect snow has affected the area from roughly Wasaga Beach to Angus for much of the day. This band is expected to weaken later tonight.
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 extremely 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 21:59
Until: Dec 12, 2025 13:02
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
###
From: Dec 06, 2024 08:11
Until: Dec 11, 2025 07:03
snowfall
###
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.
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 10, 2025 10:53
Until: Dec 10, 2025 23:59
snowfall
Heavy snow expected today.
What:
Total snowfall amounts near 10 cm.
Reduced visibility in heavy snow.
When:
Ending this afternoon.
Additional Information:
An Alberta clipper will bring snow across the area which may be heavy at times beginning early this morning. The snow is expected to taper to scattered flurries or drizzle from southwest to northeast this afternoon. Lesser snowfall amounts are expected near the Lake Ontario shore where a transition to rain or rain snow mix is expected.
###
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.
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 10, 2025 10:53
Until: Dec 10, 2025 23:59
snowfall
Heavy snow expected today.
What:
Total snowfall amounts near 10 cm.
Reduced visibility in heavy snow.
When:
Beginning early this morning and ending this afternoon.
Additional Information:
An Alberta clipper will bring snow across the area which may be heavy at times beginning early this morning. The snow is expected to taper to scattered flurries or drizzle from southwest to northeast this afternoon. Lesser snowfall amounts are expected near the Lake Ontario shore where a transition to rain or rain snow mix is expected.
###
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.
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 10, 2025 06:46
Until: Dec 10, 2025 22:46
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
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 early Wednesday morning and ending from west to east through Wednesday evening.
Additional Information:
An Alberta clipper will bring snow across the area which may be heavy at times early Wednesday morning. The snow is expected to end from west to east through Wednesday evening.
###
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 19:16
Until: Dec 10, 2025 11:16
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:
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 from southwest to northeast Wednesday afternoon.
Lake effect snow squalls are then possible for areas southeast of Georgian Bay Wednesday night into Thursday. Additional snowfall accumulation is likely for some locations.
###
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 19:12
Until: Dec 10, 2025 11:12
freezing drizzle
Areas of freezing drizzle continue.
What:
Freezing drizzle leading to icy surfaces.
When:
Continuing overnight.
Additional information:
Patchy freezing drizzle continues over some locations. The freezing drizzle is expected to end later tonight.
###
Icy surfaces will likely form and could be difficult to detect. There is risk of injury due to slips and falls.
Freezing drizzle advisories are issued when drizzle is expected to freeze on contact and create icy surfaces.
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 10, 2025 05:14
Until: Dec 10, 2025 09:59
freezing drizzle
Areas of freezing drizzle continue.
###
Icy surfaces will likely form and could be difficult to detect. There is risk of injury due to slips and falls.
Freezing drizzle advisories are issued when drizzle is expected to freeze on contact and create icy surfaces.
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 10, 2025 05:14
Until: Dec 10, 2025 09:59
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
weather
Lake effect snow off Lake Huron and Georgian Bay expected.
What:
Poor visibility in heavy snow and local blowing snow.
Local snowfall amounts up to 5 cm possible by this afternoon.
When:
This morning.
Additional information:
Lake effect snow off Lake Huron and Georgian Bay will push through the region this morning resulting in a short burst of 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 13:43
Until: Dec 04, 2025 20:04
weather
Lake effect snow off Lake Huron and Georgian Bay expected.
What:
Poor visibility in heavy snow and local blowing snow.
Local snowfall amounts up to 5 cm possible by this afternoon.
When:
This morning into this afternoon.
Additional information:
Lake effect snow off Lake Huron and Georgian Bay will push through the region this morning resulting in a short burst of 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 15:14
Until: Dec 04, 2025 20:01
fog
Near zero visibility in fog is expected over some areas.
Visibility is expected to improve later 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.
From: Dec 02, 2025 13:48
Until: Dec 02, 2025 18:02
fog
Near zero visibility in fog is expected over some areas.
###
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.
From: Dec 02, 2025 13:49
Until: Dec 02, 2025 17:59
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 03:27
Until: Nov 29, 2025 12:59
snow squall
Snow squalls continue.
What:
Poor visibility in areas of heavy snow and blowing snow.
Additional snowfall amounts near 5 cm.
When:
Early this morning.
Additional information:
Lake effect snow off of Georgian Bay will continue to affect areas north of Highway 407 tonight. Lake effect snow will end early this 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 09:52
Until: Nov 29, 2025 12:59
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 12:59
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
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:
Tonight through Friday.
Additional information:
Lake effect snow off of Georgian Bay is expected to intensify tonight and may affect portions of the region from time to time through 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 27, 2025 21:35
Until: Nov 28, 2025 13:35
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 01:07
Until: Nov 28, 2025 12:01
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.
###
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 17:20
Until: Nov 28, 2025 09:20
weather
Lake effect snow possible today and tonight.
What:
Reduced visibility in snow and local blowing snow.
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.
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 15:24
Until: Nov 28, 2025 07:00
snow squall
###
From: Nov 28, 2025 01:15
Until: Nov 28, 2025 01:15
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.
###
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 expected.
What:
Strong winds gusting 70 to 80 km/h.
When:
Beginning Wednesday and ending Thursday night or Friday morning.
Additional information:
Strong southwest winds will shift to the west Wednesday night and then to the northwest Thursday afternoon or evening. Local utility outages are possible. High-sided vehicles will be pushed around by the wind. Loose objects may be tossed by the wind.
###
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 25, 2025 20:00
Until: Nov 26, 2025 12:00
Test Message
This system is used to warn Ontario residents of serious and immediate threats to their lives and safety. In case of an actual emergency we will use this system to share valuable information about what the threat is, where it is happening, and what you can do to protect yourselves and your families from that threat.
From: Nov 19, 2025 17:55
Until: Nov 19, 2025 18:10
weather
Winter weather travel advisory in effect.
What:
2 to 4 cm of additional local snowfall.
When:
This morning.
Additional information:
Lake effect snow off Georgian Bay will continue this morning before easing this afternoon. The 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 10:05
Until: Nov 17, 2025 21:04
