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Severe thunderstorms in southern Saskatchewan and Manitoba

By Scott Bachmeier •

1-minute GOES-19 Visible images with an overlay of GLM Flash Points, from 1752 UTC on 06 June to 0101 UTC on 07 June

1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Visible images (above) and Infrared Window images (below) showed the development of supercell thunderstorms in parts of southern Saskatchewan and southern Manitoba on 06 June 2026. GOES-19 GLM Flash Points highlighted the abundant lightning activity that was associated with these thunderstorms. The supercell thunderstorms developed in the vicinity of a cold frontal boundary — and produced hail as large as 2″ in diameter, and also prompted the issuance of tornado warnings in both Manitoba and Saskatchewan.

1-minute GOES-19 Infrared Window images with an overlay of GLM Flash Points, from 1752 UTC on 06 June to 0101 UTC on 07 June

A toggle between GOES-19 Visible and Infrared Window images at 2145 UTC (below) included a cursor sample of the coldest cloud-top infrared brightness temperature of the Manitoba thunderstorm, wich was -68.18C.

Toggle between GOES-19 Visible and Infrared Window images at 2145 UTC on 06 June

A toggle between GOES-19 Visible and Infrared Window images at 2335 UTC (below) included a cursor sample of the coldest cloud-top infrared brightness temperature for the Saskatchewan thunderstorm, which was -68.67C.

Toggle between GOES-19 Visible and Infrared Window images at 2335 UTC on 06 June

Categories: GLM, GOES-19, Lightning, Severe convection