Notable EML plumes in the Northeast are relatively rare during the storm season, but are common in significant severe weather events. Yesterday's 18z ALB sounding sampled 7.7 C/km mid-level lapse rates, historically high-end. The plume was expansive too ahead of storms yesterday: pic.twitter.com/oSEu77TKIu

— Quincy Vagell (@stormchaserQ) May 16, 2018