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Brockville, Prescott, Gananoque & Leeds-Grenville

Severe Thunderstorm Watch Issued For Our Entire Region for This Afternoon & Evening

Weather Radar as of 1:45pm July 20, 2021

Brockville – A severe thunderstorm watch has been issued for:

  • Brockville – Prescott
  • Gananoque – Mallorytown
  • Merrickville-Wolford – Kemptville
  • Westport – Charleston Lake

Conditions are favourable for the development of dangerous thunderstorms that may be capable of producing damaging wind gusts and large hail.

Hazards:
110 km/h wind gusts
Up to Ping Pong Ball size hail
A tornado is also possible.

Timing:
This afternoon into this evening.

Discussion:
A line of thunderstorms has developed near Georgian Bay and is tracking east towards the area. This line of severe thunderstorms is expected to move over Eastern Ontario this afternoon and evening with very strong winds and hail.

Large hail can damage property and cause injury. Very strong wind gusts can damage buildings, down trees and blow large vehicles off the road. Locally heavy rain is also possible. Remember, severe thunderstorms can produce tornadoes. 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 ONstorm@canada.ca or tweet reports using #ONStorm.

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