Extreme rainfall fell in early Sept over a large part of the Northeast US,fueled by #Ida remnants. The rainfall amounts had an Annual Recurrence Interval of over 1000yr in some spots; meaning there is only a 0.1% chance of that happening in any given year!https://t.co/v0HVJFbWIA pic.twitter.com/RC3Bv6GLD0

— National Weather Service (@NWS) September 15, 2021