Heat wave. Please stay cool if you can

3:09 PM EDT Saturday 18 June 2016
Heat Warning in effect for:

Guelph – Erin – Southern Wellington County
Kitchener – Cambridge – Region of Waterloo
Mount Forest – Arthur – Northern Wellington County
Summer arrives in a blaze of heat.

Summer officially arrives on Monday, and Mother Nature is delivering weather to match the calendar. The most significant heat episode of the year is expected for much of Southern Ontario. Building heat over the past couple of days will peak Sunday and Monday with temperatures forecast to top off in the low to mid thirties. Overnight temperatures will also be warm Sunday night when readings are expected to be in the low twenties in many locales.

Later on Monday, an approaching cold front will herald the arrival of scattered showers and thunderstorms, followed by cooler conditions Monday night.

These hot conditions pose a health risk when you are not used to the heat.

While heat can put everyone at risk from heat illnesses, health risks are greatest for
– older adults;
– infants and young children;
– people with chronic illnesses such as breathing difficulties, heart conditions or psychiatric illnesses;
– people who work in the heat;
– people who exercise in the heat;
– homeless people; and
– people without access to air conditioning.

Drink plenty of liquids especially water before you feel thirsty to decrease your risk of dehydration. Thirst is not a good indicator of dehydration.

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.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to storm.ontario@ec.gc.ca or tweet reports to #ONStorm.