Environment Canada says a severe thunderstorm warning is in effect for: Niagara Falls – Welland – Southern Niagara RegionSt. Catharines – Grimsby – and the Northern Niagara Region as of 8:10 this evening.


Environment Canada meteorologists are tracking a cluster of severe thunderstorms capable of producing strong wind gusts, pea to dime size hail and heavy rain.

These thunderstorms are moving east at about 60 km/h.

The leading edge of these thunderstorms is extending southward from Hamilton to Dunnville and may produce wind gusts near 90 km/h.

This cluster of thunderstorms is also producing torrential downpours with 50 mm of rainfall in an hour or less possible.

Heavy downpours can cause flash floods and water pooling on roads. Strong wind gusts can toss loose objects, damage weak buildings, break branches off trees and overturn large vehicles.

The Office of the Fire Marshal and Emergency Management recommends that you take cover immediately if threatening weather approaches.

Now the extended forecast.  Tonight, Showers. A few thunderstorms this evening. Risk of a severe thunderstorm this evening. Low 17.

Thu, 12 Sep

Showers ending in the afternoon then cloudy. Wind becoming northeast 20 km/h late in the morning. Temperature steady near 17. UV index 4 or moderate.


Clear. Wind northeast 20 km/h becoming light in the evening. Low 12.

Fri, 13 Sep

Showers. High 23.


Showers. Low 18.

Sat, 14 Sep

A mix of sun and cloud with 60 percent chance of showers. High 22.


Clear. Low 15.

Sun, 15 Sep

Sunny. High 22.


Cloudy periods. Low 17.

Mon, 16 Sep

A mix of sun and cloud. High 24.


Cloudy periods. Low 17.

Tue, 17 Sep

A mix of sun and cloud. High 24.

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