ENVIRONMENT CANADA
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Severe thunderstorm watch issued for:
- Newmarket - Georgina - Northern York Region
- Pickering - Oshawa - Southern Durham Region
- Uxbridge - Beaverton - Northern Durham Region
- Vaughan - Richmond Hill - Markham
- Niagara, Ont
Current details:
A weak cold front slowly moving in from the north may trigger severe thunderstorms with torrential downpours and local rainfall amounts of 50 mm in an hour or less and wind gusts to 90 km/h this afternoon into this evening.
Strong wind gusts can toss loose objects, damage weak buildings, break branches off trees and overturn large vehicles. Heavy downpours can cause flash floods and water pooling on roads.
Lightning kills and injures Canadians every year. Remember, when thunder roars, go indoors!
The Office of the Fire Marshal and Emergency Management recommends that you take cover immediately if threatening weather approaches.
Severe thunderstorm watches are issued when atmospheric conditions are favourable for the development of thunderstorms that could produce one or more of the following: large hail, damaging winds, torrential rainfall.
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.
For more information on emergency preparedness, click here
Heat Warning continued for:
- Newmarket - Georgina - Northern York Region
- Pickering - Oshawa - Southern Durham Region
- Uxbridge - Beaverton - Northern Durham Region
- Vaughan - Richmond Hill - Markham
Hot and humid conditions continue into early next week.
Daytime maximum temperatures of 31 degrees are expected along with overnight low temperatures of 20 degrees.
There may be a brief respite from the heat in some areas today as showers or thunderstorms are possible.
A slightly cooler airmass is expected to arrive on Tuesday.
Extreme heat affects everyone.
Drink plenty of water even before you feel thirsty and stay in a cool place.
Never leave people or pets inside a parked vehicle.
When it's hot eat cool, light meals.
Heat warnings are issued when very high temperature or humidity conditions are expected to pose an elevated risk of heat illnesses, such as heat stroke or heat exhaustion.
