Weather alerts in Colorado, 2021
3,897 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 3,897
- Warnings
- 1,238
- Watches
- 284
- Advisories
- 477
- Busiest month
- July1,183 alerts
- Busiest day
- June 25, 202197 alerts
Over time
By month
The alerts
3,897 alerts are too many to list on one page. Narrow it to a product above, to a month in the chart, or to a county.
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Las Animas County353
- El Paso County342
- Pueblo County314
- Kit Carson County262
- Huerfano County260
- Baca County255
- Bent County247
- Prowers County236
- Garfield County228
- Cheyenne County226
- Kiowa County223
- Fremont County217
- Otero County207
- Larimer County203
- Saguache County191
- Yuma County189
- Mesa County185
- Lincoln County179
- Elbert County176
- Rio Blanco County173
- Costilla County171
- Crowley County168
- Moffat County166
- San Miguel County165
- Weld County161
- Washington County151
- Custer County149
- Dolores County148
- Montezuma County148
- Grand County141
- Teller County139
- La Plata County136
- Douglas County135
- Montrose County135
- Logan County133
- Eagle County132
- Alamosa County132
- Phillips County128
- Boulder County127
- Morgan County127
24 more counties
- Chaffee County125
- Routt County120
- Delta County114
- Arapahoe County113
- Rio Grande County113
- Conejos County112
- Jefferson County106
- Pitkin County104
- Adams County104
- Park County96
- Sedgwick County96
- Archuleta County96
- Jackson County88
- Hinsdale County86
- Ouray County85
- San Juan County83
- Clear Creek County81
- Gunnison County78
- Gilpin County76
- Denver County73
- Broomfield County66
- Summit County61
- Mineral County60
- Lake County52
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.