The 8300 j/kg of surface-based CAPE measured in the 0z sounding out of Minneapolis, MN (MPX) is > 1000 j/kg higher than the next closest sounding ever recorded there, a testament to just how unusually warm/moist the boundary layer has been over the upper midwest today #mnwx #wiwx pic.twitter.com/Z6tNIA4JqX

— Eric Webb (@webberweather) July 20, 2019