Hurricane #Isaias currently only has an eyewall on the north side due to shear. The more this eyewall can build around to the west side, the better Isaias will be able to fight the shear and remain strong. Hard to predict, but we'll be watching for trends like that today. pic.twitter.com/DcgQer84NI

— Dr. Levi Cowan (@TropicalTidbits) July 31, 2020