Alert archive / Colorado / Adams County
Weather alerts in Adams County, Colorado, 2021
104 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Adams County and its neighbors
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 104
- Warnings
- 36
- Watches
- 14
- Advisories
- 20
- Busiest month
- July21 alerts
- Busiest day
- August 19, 20218 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 |
|---|---|---|---|
| Jan 11, 8:11 PM MST | High Wind Watch | BOU | 30 hr |
| Jan 13, 1:46 AM MST | High Wind Warning | BOU | 63 hr |
| 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 14, 2:48 PM MST | Wind Chill Warning | BOU | 20 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 7, 3:36 AM MDT | Fire Weather Watch | BOU | 11 hr |
| Apr 7, 2:49 PM MDT | Red Flag Warning | BOU | 28 hr |
| Apr 14, 3:03 PM MDT | Winter Weather Advisory | BOU | 45 hr |
| Apr 15, 2:51 PM MDT | Mesoscale Discussion | SPC | 4 hr |
| Apr 18, 1:56 PM MDT | Winter Weather Advisory | BOU | 37 hr |
| Apr 27, 11:15 AM MDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 27, 11:45 AM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 27, 12:49 PM MDT | Severe Thunderstorm Warning | BOU | 26 min |
| Apr 27, 1:15 PM MDT | Special Weather Statement | BOU | 45 min |
| Apr 27, 2:32 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Apr 27, 2:43 PM MDT | Severe Thunderstorm Warning | BOU | 32 min |
| Apr 27, 3:13 PM MDT | Severe Thunderstorm Warning | BOU | 32 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 2, 11:45 AM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 2, 1:17 PM MDT | Severe Thunderstorm Warning | BOU | 28 min |
| May 8, 2:59 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 14, 1:56 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 14, 9:29 PM MDT | Severe Thunderstorm Warning | BOU | 46 min |
| May 15, 1:57 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 22, 10:51 AM MDT | Mesoscale Discussion | SPC | 114 min |
| May 22, 12:20 PM MDT | Tornado Watch | SPC | 8 hr |
| May 22, 1:11 PM MDT | Severe Thunderstorm Warning | BOU | 49 min |
| May 22, 2:05 PM MDT | Tornado Warning | BOU | 25 min |
| May 22, 2:18 PM MDT | Special Weather Statement | BOU | 42 min |
| May 23, 10:53 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 23, 12:06 PM MDT | Tornado Watch | SPC | 8 hr |
| Jun 1, 1:14 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 4:59 PM MDT | Severe Thunderstorm Warning | BOU | 31 min |
| Jun 13, 4:59 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 14, 2:51 PM MDT | Mesoscale Discussion | SPC | 114 min |
| Jun 18, 5:34 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jun 19, 12:46 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Jun 19, 1:44 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 19, 2:09 PM MDT | Tornado Warning | BOU | 36 min |
| Jun 19, 2:52 PM MDT | Tornado Warning | BOU | 23 min |
| Jun 19, 3:26 PM MDT | Severe Thunderstorm Warning | BOU | 34 min |
| Jul 1, 8:46 AM MDT | Flash Flood Watch | BOU | 12 hr |
| Jul 1, 12:30 PM MDT | Special Weather Statement | BOU | 30 min |
| Jul 1, 12:56 PM MDT | Special Weather Statement | BOU | 34 min |
| Jul 1, 1:05 PM MDT | Areal Flood Advisory | BOU | 85 min |
| Jul 1, 2:20 PM MDT | Areal Flood Advisory | BOU | 3 hr |
| Jul 2, 6:42 PM MDT | Severe Thunderstorm Warning | BOU | 33 min |
| Jul 2, 7:11 PM MDT | Areal Flood Advisory | BOU | 47 min |
| Jul 3, 5:33 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Jul 4, 4:28 PM MDT | Special Weather Statement | BOU | 62 min |
| Jul 5, 7:36 PM MDT | Areal Flood Advisory | BOU | 84 min |
| Jul 9, 1:38 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Jul 13, 1:38 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 13, 3:57 PM MDT | Special Weather Statement | BOU | 33 min |
| Jul 15, 2:09 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 17, 7:06 PM MDT | Special Weather Statement | BOU | 24 min |
| Jul 17, 7:11 PM MDT | Severe Thunderstorm Warning | BOU | 34 min |
| Jul 17, 7:37 PM MDT | Areal Flood Advisory | BOU | 113 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 3, 3:48 PM MDT | Areal Flood Advisory | BOU | 87 min |
| Aug 3, 4:05 PM MDT | Flash Flood Warning | BOU | 115 min |
| Aug 6, 2:29 PM MDT | Special Weather Statement | BOU | 46 min |
| Aug 19, 1:14 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 19, 2:39 PM MDT | Tornado Warning | BOU | 36 min |
| Aug 19, 2:46 PM MDT | Severe Thunderstorm Warning | BOU | 29 min |
| Aug 19, 2:59 PM MDT | Areal Flood Advisory | BOU | 61 min |
| Aug 19, 3:05 PM MDT | Tornado Warning | BOU | 25 min |
| Aug 19, 3:44 PM MDT | Severe Thunderstorm Warning | BOU | 31 min |
| Aug 19, 4:17 PM MDT | Severe Thunderstorm Warning | BOU | 43 min |
| Aug 19, 5:00 PM MDT | Severe Thunderstorm Warning | BOU | 30 min |
| Sep 3, 1:20 PM MDT | Mesoscale Discussion | SPC | 55 min |
| Sep 4, 10:01 PM MDT | Special Weather Statement | BOU | 29 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 26, 3:08 AM MST | High Wind Warning | BOU | 14 hr |
| 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.
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.