Many consider the Labour Day weekend to be the last days of summer, but the forecast disagrees.
Environment Canada has issued a heat warning for several parts of southern Ontario, including our area.
From Sunday to Wednesday, temperatures are forecast to be in the high 20s or low 30s, with humidex values ranging from 35 to 40 degrees.
“Despite overnight temperatures being lower than warning criteria in some areas, humidex and daytime highs will be very atypical of early September,” said Environment Canada.
“The passage of a cold front will bring an end to the heat on Wednesday.”
Find Environment Canada's full heat warning below:
Heat warning issued for:
Newmarket - Georgina - Northern York Region, Ont. (043220)
Vaughan - Richmond Hill - Markham, Ont. (043240)
Barrie - Collingwood - Hillsdale, Ont. (044130)
Guelph - Erin - Southern Wellington County, Ont. (046420)
Innisfil - New Tecumseth - Angus, Ont. (046510)
Halton Hills - Milton, Ont. (046630)
Burlington - Oakville, Ont. (046640)
Current details:
Humidex values reaching 34 are expected for the next 3 to 5 days.
A heat event is expected beginning Sunday.
Hazards:
Maximum temperatures of 29 to 31 degrees Celsius.
Humidex values of 35 to 40.
Timing:
Beginning Sunday and ending Wednesday.
Discussion:
A hot airmass is expected to affect the area beginning Sunday and persisting into Wednesday. Despite overnight temperatures being lower than warning criteria in some areas, humidex and daytime highs will be very atypical of early September.
The passage of a cold front will bring an end to the heat on Wednesday.
Hot and humid air can also bring deteriorating air quality and can result in the Air Quality Health Index approaching the high risk category.
The risks are greater for young children, pregnant women, older adults, people with chronic illnesses and people working or exercising outdoors.
Watch for the effects of heat illness: swelling, rash, cramps, fainting, heat exhaustion, heat stroke and the worsening of some health conditions.
Drink plenty of water even before you feel thirsty and stay in a cool place.
Check on older family, friends and neighbours. Make sure they are cool and drinking water
Outdoor workers should take regularly scheduled breaks in a cool place.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.
More details on the alert are available here.
