Evans hail storm history
Weld County·NOAA NCEI Storm Events Database·~75-day publication lag
Evans, located in Weld County on Colorado's Front Range, experiences hail events at a rate of 1.6 per year on average. Over the past 10 years, Evans has recorded 16 hail events of 1 inch or larger, with the largest documented stone reaching 2.75 inches in diameter. The city's position between the Rocky Mountains and the plains makes it a corridor for afternoon convective storms that frequently produce hail.
Hail risk in Evans peaks between May and July, when afternoon and evening convective storms track northeast from the mountains. Most significant hail events in Weld County occur between 2pm and 7pm MT during these months, with April and August representing secondary risk periods. The city's 5 events of 1.5 inches or larger in the past decade cluster heavily in this May-through-July window.
Annual frequency — last 10 years
When hail hits — monthly pattern
Avg events per month · all years · NOAA data
All recorded hail events
Of 64 recorded events, 18 (28%) reached 1.5" or larger — the threshold for likely functional damage on standard asphalt shingles.
Average size of the hailstones was 0.5 inches and the duration lasted 12 minutes.
Picture from Social Media with a few larger stones as well.
Report from mping.
Strong winds and large hail accompanied a thunderstorm that struck between Keenseburg and Roggen. O…
This analysis covers 10 years of hail events 1 inch or larger documented in National Weather Service records for Evans. NOAA storm reports rely on trained spotters and trained weather observers, so smaller events or hail that falls in unpopulated areas may not be recorded. Weld County has 21 documented hail events in NOAA archives, providing a regional context for Evans-specific risk.
NOAA Storm Events Database source