1-minute Mesoscale Domain Sector GOES-16 (GOES-East) “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.35 µm) images — with and without an overlay of GLM Flash Extent Density (above) — showed the development of a large Mesoscale Convective System (MCS) that developed over North Dakota and began moving eastward into Minnesota on 17 July 2020 (surface analyses). These thunderstorms produced... Read More

Severe thunderstorms affected much of the Upper Midwest on 11 July 2020 — and 1-minute Mesoscale Domain Sector GOES-16 (GOES-East) “Red” Visible (0.64 µm) images (above) showed two separate clusters of thunderstorms that moved southeastward across Iowa, producing large hail and damaging winds (SPC Storm Reports). The initial round of storms produced a curved outflow boundary across central and... Read More

1-minute Mesoscale Domain Sector GOES-16 (GOES-East) “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.35 µm) images (above) showed two severe thunderstorms along the North Dakota / South Dakota border region, which exhibited Above-Anvil Cirrus Plumes  (reference | VISIT training).A longer animation of GOES-16 Visible images with plots of time-matched SPC Storm Reports is shown above, with GOES-16 Infrared images... Read More

GOES-16 (GOES-East) “Red” Visible (0.64 µm) images with time-matched plots of SPC Storm Reports (above) displayed clusters of thunderstorms that moved across eastern Wyoming and western South Dakota on 28 June 2020. Numerous overshooting tops were seen, along with cloud-top gravity waves and a couple of Above-Anvil Cirrus Plumes (reference | VISIT training). These storms produced hail as large as 2.25″ in... Read More