Thunder Bay and Region – Severe Thunder Storm Watch

Weather Update July 21 2014
Weather Radar Map July 21 2014 19:25EDT
Weather Update July 21 2014
Weather Radar Map July 21 2014 19:25EDT

Weather Alerts and Warnings in Effect

THUNDER BAY – Weather – Environment Canada has issued a Severe thunderstorm watch in effect for the City of Thunder Bay. The threatened weather has also lead to the Lakehead Region Conservation Authority issuing a Flood Outlook for the region.

Severe thunderstorm watch in effect for:

  • City of Thunder Bay
  • Dryden, Vermilion Bay
  • Cloud Bay – Dorion
  • Kakabeka Falls – Whitefish Lake – Arrow Lake

Severe thunderstorm conditions are possible from early evening to overnight.

Conditions are favourable for the development of very dangerous thunderstorms that may be capable of producing destructive wind gusts, large hail and torential rain.

A developing low pressure system over North Dakota combined with a warm front across northern Minnesota is expected to trigger severe thunderstorms this evening across portions of northwestern Ontario. Thunderstorms are expected to develop or move into the area after 7 PM CDT this evening and persist overnight. Heavy rainfall and extreme winds are the primary threats. As the thunderstorms evolve it is quite possible they will transition into a broad area of heavy rain resulting in local rainfall amounts of 60mm. Rainfall warnings may be issued before sunrise.

Fast moving water across a road can sweep a vehicle away. Rapidly rising rivers and creeks can sweep away bridges, culverts, buildings, and people. Widespread and extremely strong wind gusts can destroy buildings with tornado like damage, flatten large stands of trees and blow vehicles off the road. Remember, severe thunderstorms can produce tornadoes. Be prepared for severe weather. Take cover immediately, if threatening weather approaches.

Emergency Management Ontario recommends that you take cover immediately, if threatening weather approaches.

Environment Canada meteorologists will update alerts as required, so stay tuned to your local media or Weatheradio. Email reports of severe weather to or tweet with the hashtag #ONStorm.

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