Alberta: Thunderstorm Forecast for Tuesday, May 9, 2023

A second day of isolated pop-up thunderstorms is on the way for Tuesday. The risk of severe storms, which could bring moderate-sized hail and wind gusts exceeding 90 km/h, will be concentrated along the Edmonton, Calgary to Lethbridge corridor during the afternoon and evening hours.

Meanwhile, non-severe thunderstorms are possible for the rest of the region. While tornadoes aren’t expected, these storms do have the potential to produce funnel clouds and perhaps even a landspout.

Landspout: A landspout is a type of tornado that forms under a weak thunderstorm. Unlike traditional tornadoes, which develop from supercell thunderstorms and are associated with a rotating updraft called a mesocyclone, landspouts form from non-supercell storms and do not have a mesocyclone. These tornadoes are generally weaker and shorter-lived than their supercell counterparts but can still pose a threat to property and life, with wind speeds occasionally reaching up to 160 km/h.