Severe Thunderstorm Alert: City of Thunder Bay and Region

Thunderstorm watch

Conditions Favourable for Severe Thunderstorms with Damaging Winds and Large Hail

Thunder Bay – Weather Alert – Environment Canada has issued a Severe Thunderstorm Watch for the City of Thunder Bay and surrounding area.


  • Wind gusts up to 100 km/h
  • Hail ranging from nickel to ping pong ball size
  • Risk of a tornado

Timing: This afternoon and evening

The City of Thunder Bay and surrounding region are currently under a severe weather alert as conditions are conducive to the development of severe thunderstorms. These storms have the potential to bring about strong wind gusts, large hail, and even a risk of a tornado.

Thunderstorms are expected to form during the afternoon and progress eastward, heading towards Lake Superior by early evening. The primary hazards associated with these storms include powerful wind gusts and substantial hail.

Although the chance of a tornado cannot be ruled out, it is expected to be relatively low. As the evening progresses, the likelihood of severe thunderstorms will diminish.

It is important to note that large hail can cause damage to property and pose a risk of injury. Strong wind gusts have the capacity to displace loose objects, cause damage to weak structures, snap tree branches, and potentially overturn large vehicles. It is crucial to remain vigilant and prepared for severe weather conditions. Additionally, it is essential to remember that severe thunderstorms have the potential to generate tornadoes.

Lightning is also a significant concern during thunderstorms, leading to injuries and fatalities every year. Remember, when thunder roars, prioritize seeking shelter indoors to ensure personal safety.

Stay tuned to local weather updates and heed the advice and warnings provided by local authorities. Take necessary precautions to protect yourself, your property, and others in your vicinity during this period of heightened weather activity.

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