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Severe Thunderstorm Watches Issued for Northwestern Ontario

Environment and Climate Change Canada issued yellow-level severe thunderstorm watches for much of northwestern Ontario on Monday. The watches warn of wind gusts up to 110 kilometres per hour and hail up to ping-pong ball size late Monday afternoon and evening.

Cbc
1 source·May 25, 6:12 PM(3 days ago)·1m read
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Environment and Climate Change Canada issued severe thunderstorm watches for much of northwestern Ontario on Monday afternoon. The yellow-level watches cover the period from late Monday afternoon through the evening and warn of wind gusts reaching 110 kilometres per hour and hail up to ping-pong ball size.

The watches state that utility outages are possible and advise residents to secure loose objects and seek shelter in a basement or interior room if threatening weather approaches.

People outside are told to protect themselves from flying debris and hail. Affected communities include Armstrong, Atikokan, the City of Thunder Bay, Dryden, Fort Frances, Ignace, Nipigon, Pickle Lake, Sioux Lookout, and Webequie, along with surrounding areas and parks. ca or by using the hashtag #ONStorm on social media.

Key Facts

110 km/h wind gusts
maximum speed forecast in the watches
Ping-pong ball hail
largest hail size mentioned in the watches
Yellow-level watches
alert level issued by Environment and Climate Change Canada

Story Timeline

2 events
  1. Monday afternoon

    Environment and Climate Change Canada issued severe thunderstorm watches for northwestern Ontario.

    1 sourceCbc
  2. Monday evening

    Watches warn of wind gusts up to 110 km/h and ping-pong ball-sized hail.

    1 sourceCbc

Potential Impact

  1. 01

    Utility outages may occur in the affected communities.

  2. 02

    Residents may experience property damage from hail or wind.

Transparency Panel

Sources cross-referenced1
Confidence score65%
Synthesized bySubstrate AI
Word count124 words
PublishedMay 25, 2026, 6:12 PM

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