Weather Alert: Severe Thunderstorm Watch and Heat Warning

In effect for: Temiskaming Shores - Temagami

Yellow Warning - Heat

Issued: 11:42 AM EDT Thursday 2 July 2026

Impact Level: Moderate

Forecast Confidence: High

A multi-day heat event continues.

What

• Maximum temperatures of 28 to 31 degrees Celsius.
• Minimum temperatures of 17 to 21 degrees Celsius.
• Humidex values of 35 to 40.

When

Continuing through today, and into Friday for some regions.

Additional Information

This is the first heat event of the year for some regions. Hot and humid air can also bring deteriorating air quality and can result in the Air Quality Health Index approaching the high-risk category.

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.

Take action to protect yourself and others – extreme heat can affect everyone’s health. Determine if you or others around you are at greater risk of heat illness. Check on older adults, those living alone and other at-risk people in-person or on the phone multiple times a day.

Watch for the early signs of heat exhaustion in yourself and others. Signs may include headache, nausea, dizziness, thirst, dark urine and intense fatigue. Stop your activity and drink water.

Heat stroke is a medical emergency! Call 9-1-1 or your emergency health provider if you, or someone around you, is showing signs of heat stroke which can include red and hot skin, dizziness, nausea, confusion and change in consciousness. While you wait for medical attention, try to cool the person by moving them to a cool place, removing extra clothing, applying cold water or ice packs around the body.

Cooling Centre Available

Cooling Centre available at the Temiskaming Shores Public Library located at 285 Whitewood Ave.

Heat Safety Reminders

• Drink water often and before you feel thirsty to replace fluids.
• Close blinds, or shades and open windows if outside is cooler than inside.
• Turn on air conditioning, use a fan, or move to a cooler area of your living space.
• Plan and schedule outdoor activities during the coolest parts of the day.
• Limit direct exposure to the sun and heat.
• Wear lightweight, light-coloured, loose-fitting clothing and a wide-brimmed hat.
• Never leave people, especially children, or pets inside a parked vehicle.
• Check the vehicle before locking to make sure no one is left behind.

Yellow Watch - Severe Thunderstorm

Issued: 12:40 PM EDT Thursday 2 July 2026

Impact Level: Moderate

Forecast Confidence: High

Description

Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts and large hail.

What

• Wind gusts up to 90 km/h.
• Near quarter sized hail.

When

This afternoon.

Additional Information

Thunderstorms may develop over the area beginning early this afternoon. Some of these thunderstorms may be accompanied by strong wind gusts and hail before moving east into Quebec.

Driving conditions may be difficult. Local utility outages are possible. There is a risk of injury.

Severe thunderstorm watches are issued when conditions are favourable for the development of thunderstorms capable of producing damaging hail, wind or rain.

Recommended Action

When thunder roars, go indoors! Lightning kills and injures Canadians every year.

Emergency Management Ontario recommends that you take cover immediately if threatening weather approaches.

Stay Informed

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: ontario.ca/page/be-prepared-emergency

Heat safety information: How to protect yourself from the health effects of extreme heat

Extreme heat risk information: Health risks and who is at risk of extreme heat events