The hail storms and flooding that hit parts of Colorado earlier this month stand out as the fourth most costly catastrophe in the state's history, the Rocky Mountain Insurance Information Association    Rocky Mountain Insurance Information Association Latest from The Business Journals Fire victims have 180 days to take Colorado to courtColorado hailstorm damage estimated at nearly 5MFourmile Canyon fire damage tops 7M; Ritter seeks SBA aid Follow this company has calculated.The Greenwood Village-based organization estimated 69,842 auto and property insurance claims have been filed for a combined $321.1 million.The storms hit June 6 in the southern Denver area and down into Colorado Springs. A day later, the storms slammed northern Colorado and the Eastern Plains.The association said 33,459 claims were filed because of damage to autos and 36,383 claims were tied to property damage. Most of the damage was to roofs.A July 1990 hailstorm ranks as the costliest catastrophe in Colorado, with insured damages at $1.08 billion when the dollars are adjusted for inflation. A July 2009 hailstorm is second, at $804.8 million, while a June 2009 tornado and hailstorm is third, at $370.4 million.Those rankings could change as insurance companies begin calculating claims tied to the wildfires burning around Colorado. The Rocky Mountain Insurance Information Association said the most expensive wildlife in Colorado history is the Fourmile Canyon fire near Boulder that destroyed 169 homes. The ongoing High Park fire in Larimer County already has burned at least 257 homes.