Second recon pass through #Ida shows a preliminary pressure drop of ~10-11 mb in an hour and a half. If verified by dropsonde, this indicates explosive intensification. NE eyewall winds were measured in ballpark of 130 mph at the surface, which would be on edge of Cat 4 strength. pic.twitter.com/F3JUPRJzUk

— Dr. Levi Cowan (@TropicalTidbits) August 29, 2021