I had devices recording air pressure in 2 hotels in Panama City. BLUE min was 939.7 mb at 12:45 pm in W eyewall. BLUE did not get in eye. BLACK min was 923.2 mb at 12:44 pm, in W edge of eye. That’s 16.5 mb difference over ~3.7 n mi. Sick inner core gradient. #Hurricane #MICHAEL pic.twitter.com/BnejMxIjzA

— Josh Morgerman (@iCyclone) October 11, 2018