'Ring of Fire' storms target parts of Manitoba, NW Ontario this weekend
Severe storm risk Saturday for the eastern Prairies and northwestern Ontario. Heavy, prolonged downpours may lead to localized flooding concerns in some areas.
A broad high pressure system over Ontario is steering an active storm track into Manitoba and northwestern Ontario for the weekend.
These thunderstorms, often referred to as "Ring of Fire" storms, develop along the outer edge of the high pressure area. They are driven by sharp temperature contrasts, which can energize the storms and allow them to persist, sometimes reaching severe levels, well into the overnight hours.
Stay alert to the changing conditions, and always check the weather watches and warnings in your area. Here's a closer look at the timing.
Late Friday to Saturday morning:
An influx of instability from the U.S. will bring non-severe thunderstorms to Manitoba's Interlake region overnight Friday, tracking northward.
DON'T MISS: Canada's October wild card: Record warmth on the table, but snow still in play
A brief severe storm is possible just north of Red Lake.
Late Saturday to Sunday
An active storm track will develop from southeastern Manitoba to northwestern Ontario, bringing rounds of thunderstorms from late Saturday afternoon through Sunday afternoon. These storms may repeatedly impact the same areas for over 24 hours.
Heavy rainfall is a key concern, with 50-100 mm possible through the weekend, raising the risk of localized flooding.
RELATED: Get ahead of disaster: Six tips to manage flooding
The location of the heaviest rainfall may shift as forecasts are refined.
Some thunderstorms between Winnipeg and Kenora, including Red Lake and surrounding regions, may reach severe levels.
Be sure to check for the latest weather updates in your area.