Weather alerts in Colorado, 2017
2,909 weather alerts in 2017, 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 2017. Tap one for its archive.
- Alerts
- 2,909
- Warnings
- 883
- Watches
- 206
- Advisories
- 458
- Busiest month
- July663 alerts
- Busiest day
- August 10, 201769 alerts
Over time
By month
The alerts
2,909 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 County307
- El Paso County294
- Pueblo County274
- Kit Carson County267
- Yuma County248
- Cheyenne County218
- Kiowa County212
- Baca County205
- Huerfano County198
- Fremont County197
- Otero County197
- Bent County193
- Prowers County189
- Lincoln County169
- Custer County168
- Garfield County165
- Crowley County161
- Mesa County157
- Elbert County148
- Washington County142
- Weld County139
- Saguache County138
- Montrose County128
- Douglas County127
- Larimer County126
- Teller County126
- Arapahoe County120
- Rio Blanco County117
- Boulder County113
- Delta County111
- Jefferson County110
- Logan County110
- Costilla County108
- Adams County108
- Phillips County108
- San Miguel County104
- Moffat County99
- Chaffee County98
- Morgan County98
- Gunnison County97
24 more counties
- Routt County93
- Sedgwick County93
- Dolores County91
- Montezuma County91
- La Plata County86
- Eagle County86
- Park County79
- Pitkin County76
- Denver County75
- Alamosa County74
- Ouray County73
- Clear Creek County69
- Conejos County68
- Gilpin County68
- Rio Grande County63
- Broomfield County63
- Grand County60
- Archuleta County58
- Hinsdale County54
- Jackson County52
- San Juan County50
- Lake County50
- Mineral County46
- Summit County45
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.