Yellow Warning - Severe Thunderstorm

At 3:24 a.m. EDT, Environment Canada meteorologists are tracking a severe thunderstorm capable of producing strong wind gusts, loonie to ping pong ball size hail and heavy rain.

Thunderstorm Location: Over Thorold

Motion: Moving east at 40 km/h

Hazards: Wind: damaging (90 - 110 km/h) Hail: up to quarter size (up to 2.5 cm) Rain: heavy (15 - 50 mm)

Locations in the Path: St. Catharines Thorold Niagara Falls

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Heavy rain may cause flash flooding and significant reductions to visibility. Large hail may cause significant damage and injury.

Severe thunderstorm warnings are issued when imminent or occurring thunderstorms are expected to produce damaging hail, wind or rain.