coincidence?

 My west coast brother and his wife have five children.  The oldest three are named Fred, Henry and Ida, in that order.  In the last few weeks parts of the United States have experienced Tropical Storm Fred, Tropical Storm Henry (or Henri) and most recently Hurricane Ida.  My brother has worked for a TV station for several years so I asked him if he had an in with the storm naming people.  He said no, and claims that this name sequence was purely coincidental.  He did admit, however, that Ida has always been an overachiever.  I suspect the people of Louisiana would agree.