Alert archive / Colorado / Denver County
Weather alerts in Denver County, Colorado, 2021
73 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Denver County and its neighbors
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 73
- Warnings
- 16
- Watches
- 9
- Advisories
- 17
- Busiest month
- March13 alerts
- Busiest day
- June 13, 20217 alerts
Over time
By month
The alerts
Every alert, in the order issued. Times are local, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Feb 11, 1:45 PM MST | Wind Chill Advisory | BOU | 4 days |
| Feb 12, 8:46 PM MST | Winter Weather Advisory | BOU | 40 hr |
| Feb 23, 2:35 PM MST | Winter Weather Advisory | BOU | 43 hr |
| Feb 24, 10:19 PM MST | Winter Storm Warning | BOU | 10 hr |
| Mar 10, 2:40 PM MST | Winter Storm Watch | BOU | 48 hr |
| Mar 11, 2:29 PM MST | Winter Storm Warning | BOU | 4 days |
| Mar 13, 12:22 PM MST | Mesoscale Discussion | SPC | 4 hr |
| Mar 13, 7:15 PM MST | Mesoscale Discussion | SPC | 6 hr |
| Mar 13, 7:39 PM MST | Mesoscale Discussion | SPC | 6 hr |
| Mar 14, 1:55 AM MST | Mesoscale Discussion | SPC | 6 hr |
| Mar 14, 9:21 AM MDT | Mesoscale Discussion | SPC | 4 hr |
| Mar 14, 12:19 PM MDT | Blizzard Warning | BOU | 12 hr |
| Mar 15, 2:41 PM MDT | Dense Fog Advisory | BOU | 25 min |
| Mar 15, 3:07 PM MDT | Dense Fog Advisory | BOU | 19 hr |
| Mar 20, 2:11 PM MDT | Winter Storm Watch | BOU | 13 hr |
| Mar 21, 2:43 AM MDT | Winter Weather Advisory | BOU | 31 hr |
| Mar 27, 5:51 AM MDT | Special Weather Statement | BOU | 54 min |
| Apr 14, 3:03 PM MDT | Winter Weather Advisory | BOU | 45 hr |
| Apr 18, 1:56 PM MDT | Winter Weather Advisory | BOU | 37 hr |
| Apr 27, 11:59 AM MDT | Special Weather Statement | BOU | 31 min |
| May 2, 10:14 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 2, 11:40 AM MDT | Severe Thunderstorm Warning | BOU | 50 min |
| May 8, 2:59 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 14, 1:56 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 15, 1:57 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 15, 2:50 PM MDT | Special Weather Statement | BOU | 25 min |
| May 22, 10:51 AM MDT | Mesoscale Discussion | SPC | 114 min |
| May 22, 12:20 PM MDT | Tornado Watch | SPC | 8 hr |
| May 23, 10:53 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 23, 12:06 PM MDT | Tornado Watch | SPC | 8 hr |
| Jun 13, 12:08 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Jun 13, 4:27 PM MDT | Special Weather Statement | BOU | 33 min |
| Jun 13, 4:38 PM MDT | Severe Thunderstorm Warning | BOU | 37 min |
| Jun 13, 4:59 PM MDT | Severe Thunderstorm Warning | BOU | 31 min |
| Jun 13, 4:59 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 5:14 PM MDT | Severe Thunderstorm Warning | BOU | 31 min |
| Jun 13, 5:45 PM MDT | Severe Thunderstorm Warning | BOU | 31 min |
| Jun 13, 6:26 PM MDT | Special Weather Statement | BOU | 34 min |
| Jun 14, 2:51 PM MDT | Mesoscale Discussion | SPC | 114 min |
| Jun 18, 5:34 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jun 19, 1:57 PM MDT | Special Weather Statement | BOU | 33 min |
| Jun 25, 7:16 PM MDT | Areal Flood Advisory | BOU | 89 min |
| Jul 1, 8:46 AM MDT | Flash Flood Watch | BOU | 12 hr |
| Jul 1, 3:55 PM MDT | Areal Flood Advisory | BOU | 95 min |
| Jul 2, 6:36 PM MDT | Special Weather Statement | BOU | 24 min |
| Jul 2, 7:13 PM MDT | Special Weather Statement | BOU | 32 min |
| Jul 4, 2:49 PM MDT | Special Weather Statement | BOU | 26 min |
| Jul 5, 5:51 PM MDT | Special Weather Statement | BOU | 24 min |
| Jul 14, 6:47 PM MDT | Areal Flood Advisory | BOU | 88 min |
| Jul 17, 6:01 PM MDT | Special Weather Statement | BOU | 29 min |
| Jul 22, 6:51 PM MDT | Areal Flood Advisory | BOU | 84 min |
| Jul 29, 2:03 PM MDT | Flash Flood Watch | BOU | 55 hr |
| Jul 30, 6:08 PM MDT | Areal Flood Advisory | BOU | 82 min |
| Jul 30, 9:34 PM MDT | Areal Flood Advisory | BOU | 56 min |
| Aug 13, 5:40 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 19, 1:14 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 19, 3:55 PM MDT | Areal Flood Advisory | BOU | 22 min |
| Sep 11, 8:14 PM MDT | Special Weather Statement | BOU | 16 min |
| Sep 11, 8:31 PM MDT | Special Weather Statement | BOU | 29 min |
| Sep 13, 7:36 PM MDT | Special Weather Statement | BOU | 39 min |
| Oct 12, 9:53 PM MDT | Freeze Warning | BOU | 10 hr |
| Oct 13, 4:40 PM MDT | Frost Advisory | BOU | 15 hr |
| Oct 14, 3:01 AM MDT | Freeze Warning | BOU | 30 hr |
| Oct 24, 2:39 PM MDT | Fire Weather Watch | BOU | 13 hr |
| Oct 25, 4:01 AM MDT | Red Flag Warning | BOU | 14 hr |
| Nov 15, 1:21 PM MST | Red Flag Warning | BOU | 28 hr |
| Nov 22, 2:40 PM MST | Red Flag Warning | BOU | 26 hr |
| Dec 5, 3:21 AM MST | Red Flag Warning | BOU | 12 hr |
| Dec 13, 2:20 PM MST | High Wind Watch | BOU | 14 hr |
| Dec 14, 4:34 AM MST | High Wind Warning | BOU | 36 hr |
| Dec 14, 12:17 PM MST | Red Flag Warning | BOU | 29 hr |
| Dec 15, 7:47 AM MST | Special Weather Statement | BOU | 43 min |
| Dec 30, 1:57 PM MST | Winter Weather Advisory | BOU | 45 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 5 |
| Severe Thunderstorm Watch | 1 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 16 |
| Special Weather Statement | 15 |
| Flooding | |
| Flash Flood Watch | 2 |
| Areal Flood Advisory | 7 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 6 |
| Cold | |
| Freeze Warning | 2 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Fire | |
| Red Flag Warning | 5 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe 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.