Active Weather
Environment and Climate Change Canada's national alert table, updated at 1:07 a.m. Eastern on September 3, shows 104 active alerts across Canada, with Ontario among the eight provinces carrying them. The specific alert types for Ontario could not be resolved in this run, so this brief does not state what they are.
Ontario is a province where a single provincial statement means very little to any particular household. The distance from Windsor to Kenora is greater than the distance from Windsor to Halifax. weather.gc.ca shows the current alerts for your own community and takes half a minute to check.
Southern Ontario sits north of today's active weather across the American Great Lakes states, where severe storms are possible over Minnesota and the eastern Ohio Valley. That is a separate system and does not indicate anything about conditions on this side of the border.
Infrastructure
The Government of Canada's August 18 wildfire season update noted intense wildfire activity in Northwestern Ontario in mid-July, including the evacuation of Eabametoong First Nation beginning July 18. Recovery in the affected communities is ongoing.
Nationally that update reported 4,793 fires and 4.1 million hectares burned this season, with 582 fires active and 31 out of control at that time, described as below the five year average. Those figures are two weeks old and are given here with that date attached.
No grid emergencies or water system disruptions specific to Ontario were confirmed this run.
Public Health
No air quality alerts specific to Ontario were confirmed this run. Environment and Climate Change Canada's Air Quality Health Index and your local public health unit are the current sources for your location.
No other public health advisories for the province were confirmed this run.
Watch Item
Ontario's household hazard calendar turns in September. Summer storms fade, and the ice storm and winter storm season that defines risk here builds from November onward. The province's worst outages have historically come from ice rather than wind, and an ice storm outage is longer than a wind outage because crews cannot work quickly on loaded lines.
That makes the next two months the sensible window for the preparation that matters most in this province: a heating plan that does not depend on the grid, working carbon monoxide alarms on every level of the home, and enough water and food on hand to sit still for several days without needing to drive on ice.
The Consumer Product Safety Commission's generator guidance, which is written for households on either side of the border, is worth reading before you need it rather than during an outage: operate generators outdoors only, at least 20 feet from homes and buildings, exhaust directed away from windows, doors, and vents.
For Northwestern Ontario communities recovering from the July fires, the near term items remain housing, insurance, and rebuilding timelines rather than anything on a weather map.
Explore Today
Heating without the grid, which is the question an ice storm asks.
Water, light, food, and a plan, built before the first ice storm rather than during it.
A pantry that lets a household sit still for several days without driving anywhere.