On July 11, 1990, hail up to 2.75 inches (baseball size) fell on Adams, Arapahoe, Boulder, Denver and Jefferson counties. NCEI holds 9 reports for the Front Range counties and lists 60 people injured.
RMIIA records $625 million in insured losses in 1990 dollars. Its adjusted figure is $1.57 billion in 2026 dollars on its hail page, with $1.553 billion and $1.37 billion in 2025 dollars on its catastrophe page. NOAA lists the storm as a billion-dollar disaster, at $820.1 million unadjusted and $1,984.5 million CPI-adjusted (2024 dollars), insured and uninsured combined.
Hail history for the counties hit
Significant Colorado storms around 1990
- June 13, 1984: hail to 3 in., $276.7 million (1984 dollars) insured
- May 30, 1991: hail to 2.5 in., $100 million (1991 dollars) insured
- October 1, 1994: hail to 2 in., $225 million (1994 dollars) insured
- May 22, 1996: hail to 2 in., $122 million (1996 dollars) insured
- The full Colorado storm table
Sources: Hail Damage and Statistics: Colorado's Most Costly Hail Storms (Rocky Mountain Insurance Information Association (RMIIA, now RMIA)); NOAA NCEI Storm Events Database (NOAA National Centers for Environmental Information).
