SWly wind shear is noticeably starting to pinch onto #Ian's upper lvl outflow tonight. Unfortunately, #Ian is too strong/inertially stable to be adversely affected by this shear right away as most TCs normally would, delaying some would-be weakening before landfall in SW Florida pic.twitter.com/E0ifFmUJRQ

— Eric Webb (@webberweather) September 28, 2022