Not immune, but Cell Towers along the Gulf Coast in most but not all instances are built with their equipment on the ground instead of elevated above 10-15 feet off the ground, use regular heliax without hard shielding, high wind loading antennas. Scanty Battery Back up. Remember, commercial stuff is built on Economy by the order of fast, quick and cheap. Assembly line techniques. Microwave linking. A little Caveat: Before Katrina, Cell Phones were sold in Louisiana as that must have piece of safety equipment for Hurricanes, after the debacle of Katrina and Law Suits, Cell Phone Companies put specific emergency disclaimers in their contracts.