September 2017 has generated the most major hurricane days (17.5) of any calendar month in the Atlantic on record. #Irma #Maria #Jose pic.twitter.com/V3Cuft1Kb9— Philip Klotzbach (@philklotzbach) September 24, 2017
September 2017 has generated the most major hurricane days (17.5) of any calendar month in the Atlantic on record. #Irma #Maria #Jose pic.twitter.com/V3Cuft1Kb9