From NWS
1959: Severe thunderstorms struck parts of eastern and southeastern Iowa for the second consecutive day. One storm dropped extremely large hail in portions of Scott County with an incredible 7 inch diameter stone reported east of Park View. This is one of the largest hail stones on record in Iowa. The storm also shattered the windows of several homes and businesses in Davenport including at least one greenhouse and a florist where 3000 windows were broken. Another storm produced an F2 tornado that touched down just south of Davenport before crossing into Illinois. Further west the storms produced heavy rain and flooding in some areas, with rainfall amounts ranging up to 3.38 inches at Osceola.

27 September 1936 → An early season snowstorm buried Denver, CO. A storm total of 21.3 inches fell at the Denver airport in 60 hours. 27 September 1985 → Hurricane Gloria passed over North Carolina’s Outer Banks during the morning hours. 27 September 1987 → Tons of mud and rock were loosened by a week of heavy rain on Sugar Loaf Mountain near Medellin, Colombia. The resulting mudslide killed 183 people. 27 September 1999 → The Cray C-90 Supercomputer at National Weather Service headquarters was knocked out by an electrical fire. The Supercomputer ran several numerical weather prediction models. 27 September 2009 → Tropical storm rains dropped a month’s worth of precipitation in 12 hours on Manila, Philippines. It caused the worst flooding in over four decades.

Posted under Weather History