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Severe thundstorms across Indiana

By Scott Bachmeier •

GOES-16 “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.3 µm) images, with Local Storm Reports plotted in red/cyan [click to play animated GIF| MP4]

1-minute Mesoscale Domain Sector GOES-16 (GOES-East) “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.3 µm) images (above) include time-matched plots of Local Storm Reports — which showed thunderstorms that produced several tornadoes, hail to 4.00 inches in diameter and wind gusts to 70 mph (SPC Storm Reports) along with some heavy rainfall and flooding across much of Indiana (and parts of adjacent states) on 25 June 2023.

1-minute GOES-16 Visible and Infrared images that included an overlay of GLM Flash Extent Density (below) displayed notable lightning activity with these thunderstorms.

GOES-16 “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.3 µm) images, with an overlay of GLM Flash Extent Density [click to play animated GIF| MP4]

GOES-16 Lifted Index (LI) and Convective Available Potential Energy (CAPE) derived products (below) showed a destabilizing air mass within the pre-convective environment ahead of the approaching frontal boundary — the most unstable LI values were -8 to -9ºC, with CAPE values in the 1500-1800 J/kg range.

GOES-16 “Red” Visible (0.64 µm) images, with overlays of CAPE / Lifted Index derived products and Local Storm Reports plotted in red [click to play animated GIF| MP4]

Categories: GLM, GOES-16, Heavy rain / flooding, Lightning, Severe convection