Storm History: San Juan County, Colorado

929 episodes, 944 events since 1996

Every storm the National Weather Service has filed in San Juan 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: 944
Deaths: 12
Injuries: 14
Damage: $12 million
Episodes: 929

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 San Juan 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 event	Events	Deaths	Injuries	Damage
Winter Storm	308	0	0
Winter Weather	199	0	0
Drought	147	0	0
Heavy Snow	112	0	0
Wildfire	61	0	0	$12 million
Avalanche	49	12	10	$82,000
Blizzard	19	0	0	$10,000
High Wind	12	0	0	$1,000
Flash Flood	8	0	0	$38,000
Debris Flow	8	0	0	$23,000
Excessive Heat	6	0	0
Extreme Cold/Wind Chill	5	0	0
Thunderstorm Wind	3	0	0
Dense Smoke	3	0	0
Dense Fog	2	0	0
Lightning	1	0	4
Strong Wind	1	0	0	$6,000

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:

Tornadoes in San Juan County Every warning in San Juan County since 1986 Every 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.