Colorado

Storm History: Summit County, Colorado

468 episodes, 556 events since 1985

Every storm the National Weather Service has filed in Summit County, Colorado: floods, hail, damaging wind, tornadoes, winter storms, heat and the rest, with the most serious on record. Events filed by forecast zone count for every county the zone covers.

The record

Events
556
Deaths
23
Injuries
28
Damage
$167 million
Episodes
468

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

Open the live radar over Summit County

Every year

From 1996 the record holds 48 kinds of event with each office’s narrative; before that, tornadoes, hail and thunderstorm wind only, and before 1955 tornadoes alone.

By kind of event

Counted under the kind that heads each episode.

Kind of eventEventsDeathsInjuriesDamage
Winter Storm23011
High Wind9000
Heavy Snow8200
Winter Weather6803
Avalanche281815
Blizzard2200
Thunderstorm Wind1010$10,000
Hail503
Tornado402
Cold/Wind Chill400
Flash Flood300$230,000
Extreme Cold/Wind Chill300
Drought200
Wildfire220$167 million
Lightning114
Dust Storm100
Strong Wind100

The deadliest

The costliest

Damage within this county, in the dollars of its year.

The largest hail

The largest stone in each episode, which may have fallen in a neighboring county of the same episode.

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Summit CountyEvery warning in Summit County since 1986Every county in Colorado

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.