I am having same issue on Palisade limitI took the Limited in today for service on the wind noise. It was also a VERY windy day here in NJ. The tech could hear it at speeds below 50 mph, mentioned something about the Palisade having a similar issue and spent the afternoon working on it, taping here, there (and maybe everywhere). Couldn't get the noise to abate. He then drove another model on the the lot and it produced the same issue. He will be putting a call into the Hyundai Tech line next week and I'm supposed to drop it off for a day (or two) after he hears back from Hyundai.
Sounds like this is a new model issue that will hopefully be addressed by Hyundai and fingers-crossed a TSB will be issued. Until then, the radio will just be turned up a bit louder.