With HT @GregCarbin re: TOP, I've found four locations that set new 500mb height (#heatdome) records in this heat wave:

North Platte, NE; Omaha, NE; Topeka, KS; Springfield, MO

Usually, "600 dm ridges" are only at one or two locations briefly. This has persisted for days. pic.twitter.com/K00MZJhDFj

— Jonathan Erdman (@wxjerdman) August 22, 2023