Broomfield hail storm history
Broomfield County·NOAA NCEI Storm Events Database·~75-day publication lag
Broomfield County has recorded 7 hail events of 1 inch or larger over the past 10 years, with an average of 0.7 events per year. The largest documented hailstone in the county reached 1.5 inches in diameter. Broomfield's location on the Colorado Front Range makes it susceptible to afternoon convective storms that track northeast from the Rocky Mountains.
Hail in Broomfield County peaks during May, June, and July, with secondary risk in April and August. Most significant hail events occur between 2 p.m. and 7 p.m. Mountain Time, when afternoon convective development is strongest along the Front Range corridor. The single significant event of 1.5 inches or larger in the past decade occurred during this peak window.
Annual frequency — last 10 years
When hail hits — monthly pattern
Avg events per month · all years · NOAA data
All recorded hail events
Of 29 recorded events, 6 (21%) reached 1.5" or larger — the threshold for likely functional damage on standard asphalt shingles.
Report from mping.
The report was via mping.
NOAA's hail reporting density for Broomfield County is based on trained spotter networks and mobile citizen reports (mPING). With 7 documented events over 10 years, this record reflects reportable hail but may not capture all smaller events that cause residential roof damage. Local damage claims data often exceeds NOAA event counts because multiple impacts can occur within a single storm cell.
NOAA Storm Events Database source