A thunderstorm that didn't need a tornado warning as seen by RADAR
What happened?
On July 5, 2020, a thunderstorm moved across southern Manitoba. It had a hook echo and some rotation per Doppler velocities, but no tornado warning was ever issued. This was the correct decision, as the storm had produced an outflow boundary that moved ahead of the storm, making it so that the air parcels moving into the storm's updraft region weren't from directly underneath and in contact with the ground; this is referred to as a storm being "elevated" or "undercut".
The RADAR imagery from this event is presented here.
RADAR images
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Last update to this page: October 25, 2023