Seems like it can happen anywhere. Attachment from Business Aviation Weekly Bulletin
Lightning Disrupts Ops at ATL Tower
A lightning strike at the Atlanta Hartsfield air traffic control tower last Thursday night caused power shutdowns, a partial evacuation and significant delays. The strike occurred at 8:29 p.m. local time, according to an FAA Web site, and the tower lost commercial power and the emergency generator failed to start. VFR operations continued, but further disruptions occurred when smoke and fumes necessitated a partial evacuation of the tower.
Commercial power was restored at 9:10 p.m., but the tower again had to revert to VFR operations after a second power outage. Again, the emergency generator had to be manually restarted, and didn't coming on line until 9:53 p.m. The tower stayed on backup power until commercial power stabilized.
There were at least 58 flight diversions caused by the outage, and 128 delays reported by Atlanta TRACON and 123 by Atlanta Center.