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Severe thunderstorms in Minnesota

By Scott Bachmeier •

GOES-16 “Red” Visible (0.64 µm) images, with SPC Storm Reports plotted in red [click to play animation | MP4]

GOES-16 “Red” Visible (0.64 µm) images, with SPC Storm Reports plotted in red [click to play animation | MP4]

1-minute Mesoscale Domain Sector GOES-16 (GOES-East) “Red” Visible (0.64 µm) images (above) showed a mesoscale convective system (MCS) that produced large hail and damaging winds — including gusts to 85 mph around 2120 UTC — across southern Minnesota on 04 June 2019 (SPC storm reports). Numerous well-defined overshooting tops were seen in the imagery, along with cloud-top gravity waves across the western portion of the MCS anvil.

The corresponding GOES-16 “Clean” Infrared Window (10.35 µm) images (below) revealed overshooting tops with infrared brightness temperatures as cold as -70ºC — which corresponded to an air parcel rising to altitude around 13 km according to 18 UTC rawinsonde data from Chanhassen, Minnesota.

GOES-16 “Clean” Infrared Window (10.35 µm) images, with SPC Storm Reports plotted in cyan [click to play animation | MP4]

GOES-16 “Clean” Infrared Window (10.35 µm) images, with SPC Storm Reports plotted in cyan [click to play animation | MP4]

Categories: GOES-16, Severe convection