Mariners are advised to prepare for potential squalls. Vulnerable vessels are most at risk and should seek safe harbour if underway.

Conditions are favourable for the development of squalls with wind gusts up to 50 knots and hail.

A line of thunderstorms may cross the waters this afternoon into early this evening. The main threat is squalls to 50 knots. Hail is also possible.

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Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.

Be prepared for severe weather. Take cover immediately, if threatening weather approaches. Stay indoors when a thunderstorm strikes. There isn't a place outside that is safe during a thunderstorm.

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

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

What:
Damaging wind gusts to 110 km/h.
Large hail up 4 cm.
Risk of a tornado. 

When:
This afternoon into early this evening. 

Additional information:
A cold front moving through the area is expected to trigger a few severe thunderstorms.

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Large hail can damage property and cause injury. Very strong wind gusts can damage buildings, down trees and blow large vehicles off the road.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or post reports on X using #ONStorm.

For more information: https://www.ontario.ca/page/be-prepared-emergency.

Be prepared to adjust your driving with changing road conditions due to high winds.

Strong winds that may cause damage are expected or occurring.

Very strong southwest winds gusting to near 90 km/h are expected this afternoon.

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Damage to buildings, such as to roof shingles and windows, may occur. High winds may toss loose objects or cause tree branches to break. High winds may result in power outages and fallen tree branches. Motorists, especially in high profile vehicles, may expect hazardous driving conditions on highways subject to strong cross winds.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or post reports on X using #ONStorm.