19-30 in 1875... grasshoppers appeared in great numbers at 10:00 am on the 19th. Thousands landed on the ground. The streets were literally covered with them. Swarms of grasshoppers were seen on each day. All gardens in the city were devastated... and in the Countryside the grasshoppers were very destructive to ripened grain. On the 30th the grasshoppers were so numerous as to almost darken the sun. 30 in 1981... 60 mph winds were reported in Boulder. In 2004... a severe thunderstorm produced hail as large as 1 inch in diameter in south Aurora near Cherry Creek.