‘Dangerous Thunderstorms’ Are Possible

Watches

3:14 PM EDT Saturday 01 July 2017
Severe thunderstorm watch in effect for:

  • Niagara Falls – Welland – Southern Niagara Region
  • St. Catharines – Grimsby – Northern Niagara Region

Conditions are favourable for the development of dangerous thunderstorms that may be capable of producing strong wind gusts and torrential rain.

A line of thunderstorms will continue to move eastward this afternoon. There is currently a line of storms extending from Sarnia to Toronto and a few isolated storms north of Toronto towards Haliburton. Wind gusts to 90 kilometres per hour and local rainfall amounts of 50 millimetres in an hour are possible. Westerly winds developing this evening will end the threat of severe weather.

Heavy downpours can cause flash floods and water pooling on roads. Lightning kills and injures Canadians every year. Remember, when thunder roars, go indoors!

Severe thunderstorm watches are issued when atmospheric conditions are favourable for the development of thunderstorms that could produce one or more of the following: large hail, damaging winds, torrential rainfall.

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

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ec.cpio-tempetes-ospc-storms.ec@canada.ca or tweet reports using #ONStorm.

For more information:
http://www.emergencymanagementontario.ca/english/beprepared/beprepared.html.

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