![](\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2026\/04\/G19_VIS_WI_SVR_14APR2026_loop_GOES-19_2026104_203054_2026105_000154.gif\")
<\/a>1-minute GOES-19 Visible (0.64 \u00b5m) images with time-matched (+\/- 3 minutes) plots of SPC Storm Reports, from 2030 UTC on 14 April to 0015 UTC on 15 April [click to play animated GIF | MP4<\/strong><\/a>]<\/p><\/div>1-minute Mesoscale Domain Sector<\/strong><\/a> GOES-19 (GOES-East)<\/em>\u00a0Visible images (above)<\/strong><\/em> included time-matched (+\/- 3 minutes) plots of SPC Storm Reports<\/strong><\/a> — which showed the tornadoes, large hail (up to 4.00″<\/strong><\/a> in diameter) and damaging winds (as high as 88 mph<\/strong><\/a>) that occurred across much of southern Wisconsin (along with adjacent parts of far northeast Iowa and far southeast Minnesota) on 14 April 2026<\/strong><\/a>. Numerous overshooting tops were seen in the Visible images.<\/p>\n The corresponding 1-minute GOES-19 Infrared images (below)<\/em><\/strong> revealed pronounced enhanced-V<\/strong><\/a> cloud-top signatures with several of the severe thunderstorms.<\/p>\n 1-minute GOES-19 Infrared (10.3 \u00b5m) images with time-matched (+\/- 3 minutes) plots of SPC Storm Reports, from 2030 UTC on 14 April to 0015 UTC on 15 April [click to play animated GIF | MP4<\/strong><\/a>]<\/p><\/div>The coldest cloud-top infrared brightness temperatures exhibited by pulses of overshooting tops were -78\u00baC (brighter white pixels embedded within dark black areas) — which corresponded to a significant (~2 km) overshoot of the Most Unstable (MU) air parcel’s Equilibrium Level (EL), according to plots of rawinsonde data from Davenport, Iowa (below)<\/strong><\/em>. CAPE values of 4000-4300 J\/kg indicated that significant instability was present south of a frontal boundary<\/strong><\/a> which was draped across Iowa, Wisconsin and lower Michigan.<\/p>\n<\/a>