Weather alerts in Colorado, 2011
2,244 weather alerts in 2011, 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 2011. Tap one for its archive.
- Alerts
- 2,244
- Warnings
- 980
- Watches
- 284
- Advisories
- 549
- Busiest month
- July543 alerts
- Busiest day
- July 14, 201157 alerts
Over time
By month
The alerts
2,244 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.
- Kit Carson County346
- Yuma County303
- Cheyenne County274
- Las Animas County268
- El Paso County244
- Pueblo County238
- Saguache County214
- Huerfano County210
- Weld County201
- Elbert County198
- Garfield County197
- Washington County196
- Kiowa County191
- Otero County186
- Boulder County185
- Arapahoe County184
- Prowers County181
- Adams County180
- Logan County177
- Bent County176
- Crowley County175
- Costilla County174
- Baca County171
- Lincoln County165
- Rio Blanco County163
- Mesa County163
- Larimer County162
- Fremont County161
- Douglas County160
- Custer County158
- Jefferson County155
- Moffat County155
- San Miguel County153
- Rio Grande County149
- Phillips County149
- Routt County149
- Morgan County148
- Eagle County148
- Conejos County146
- Alamosa County143
24 more counties
- Sedgwick County141
- Montrose County140
- Teller County137
- Dolores County134
- Montezuma County128
- Gilpin County127
- Delta County127
- Clear Creek County120
- Gunnison County120
- Denver County118
- Park County117
- Pitkin County117
- La Plata County116
- Chaffee County112
- Grand County108
- Broomfield County97
- Lake County94
- Jackson County90
- Ouray County89
- Summit County75
- Hinsdale County73
- Archuleta County70
- Mineral County60
- San Juan County60
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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.