Alert archive / Colorado / Weld County
Weather alerts in Weld County, Colorado, 2021
161 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Weld County and its neighbors
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 161
- Warnings
- 65
- Watches
- 17
- Advisories
- 29
- Busiest month
- July42 alerts
- Busiest day
- July 1, 202111 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 5, 5:15 PM MST | Special Weather Statement | BOU | 30 min |
| Jan 11, 8:11 PM MST | High Wind Watch | BOU | 30 hr |
| Jan 13, 1:46 AM MST | High Wind Warning | BOU | 63 hr |
| Jan 14, 1:25 PM MST | Red Flag Warning | BOU | 28 hr |
| Jan 27, 8:02 AM MST | Special Weather Statement | BOU | 58 min |
| Feb 11, 1:17 PM MST | Wind Chill Advisory | BOU | 28 min |
| 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 17, 5:20 PM MST | Winter Weather Advisory | 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, 6:25 AM MDT | Special Weather Statement | BOU | 65 min |
| Mar 27, 3:57 AM MDT | Dense Fog Advisory | BOU | 4 hr |
| Mar 28, 2:08 PM MDT | High Wind Watch | BOU | 19 hr |
| 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 23, 4:48 PM MDT | Special Weather Statement | BOU | 42 min |
| 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, 1:53 PM MDT | Special Weather Statement | BOU | 37 min |
| Apr 27, 1:59 PM MDT | Severe Thunderstorm Warning | BOU | 31 min |
| Apr 27, 2:32 PM MDT | Mesoscale Discussion | SPC | 118 min |
| May 2, 10:14 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 2, 5:04 PM MDT | Special Weather Statement | BOU | 41 min |
| May 5, 4:30 PM MDT | Special Weather Statement | BOU | 45 min |
| May 14, 1:56 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 14, 4:40 PM MDT | Special Weather Statement | BOU | 35 min |
| May 14, 6:49 PM MDT | Severe Thunderstorm Warning | BOU | 41 min |
| May 14, 7:36 PM MDT | Severe Thunderstorm Warning | BOU | 39 min |
| May 14, 8:14 PM MDT | Severe Thunderstorm Warning | BOU | 46 min |
| May 20, 5:10 PM MDT | Special Weather Statement | BOU | 50 min |
| May 20, 5:38 PM MDT | Special Weather Statement | BOU | 52 min |
| May 20, 7:27 PM MDT | Severe Thunderstorm Warning | BOU | 48 min |
| May 21, 4:17 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 22, 12:20 PM MDT | Tornado Watch | SPC | 8 hr |
| May 22, 3:25 PM MDT | Severe Thunderstorm Warning | BOU | 35 min |
| May 22, 3:53 PM MDT | Severe Thunderstorm Warning | BOU | 26 min |
| May 23, 10:53 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 23, 12:06 PM MDT | Tornado Watch | SPC | 8 hr |
| May 23, 12:41 PM MDT | Special Weather Statement | BOU | 49 min |
| May 23, 1:28 PM MDT | Special Weather Statement | BOU | 32 min |
| May 24, 6:23 AM MDT | Dense Fog Advisory | BOU | 3 hr |
| May 26, 11:45 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 26, 3:42 PM MDT | Severe Thunderstorm Warning | BOU | 48 min |
| May 26, 4:18 PM MDT | Severe Thunderstorm Warning | BOU | 42 min |
| May 29, 6:20 AM MDT | Dense Fog Advisory | BOU | 100 min |
| May 29, 2:29 PM MDT | Severe Thunderstorm Warning | BOU | 31 min |
| May 29, 2:59 PM MDT | Special Weather Statement | BOU | 31 min |
| Jun 1, 1:14 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 1, 1:45 PM MDT | Special Weather Statement | BOU | 45 min |
| Jun 6, 4:02 PM MDT | Severe Thunderstorm Warning | BOU | 28 min |
| Jun 6, 4:08 PM MDT | Severe Thunderstorm Warning | BOU | 37 min |
| Jun 7, 5:07 PM MDT | Tornado Warning | BOU | 23 min |
| Jun 7, 5:24 PM MDT | Tornado Warning | BOU | 36 min |
| Jun 7, 6:04 PM MDT | Special Weather Statement | BOU | 26 min |
| Jun 7, 6:25 PM MDT | Severe Thunderstorm Warning | BOU | 39 min |
| Jun 13, 5:54 PM MDT | Severe Thunderstorm Warning | BOU | 51 min |
| Jun 13, 6:31 PM MDT | Severe Thunderstorm Warning | BOU | 29 min |
| Jun 13, 6:43 PM MDT | Severe Thunderstorm Warning | BOU | 47 min |
| Jun 13, 6:58 PM MDT | Severe Thunderstorm Warning | BOU | 32 min |
| Jun 13, 7:26 PM MDT | Severe Thunderstorm Warning | BOU | 34 min |
| Jun 13, 9:32 PM MDT | Special Weather Statement | BOU | 28 min |
| Jun 14, 2:51 PM MDT | Mesoscale Discussion | SPC | 114 min |
| Jun 18, 5:34 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jun 18, 8:57 PM MDT | Severe Thunderstorm Warning | BOU | 33 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, 3:14 PM MDT | Severe Thunderstorm Warning | BOU | 31 min |
| Jun 25, 12:30 PM MDT | Special Weather Statement | BOU | 45 min |
| Jun 25, 2:57 PM MDT | Special Weather Statement | BOU | 48 min |
| Jun 30, 8:20 PM MDT | Areal Flood Advisory | BOU | 115 min |
| Jun 30, 8:50 PM MDT | Flash Flood Warning | BOU | 3 hr |
| Jun 30, 10:32 PM MDT | Flash Flood Warning | BOU | 3 hr |
| Jul 1, 12:56 AM MDT | Flash Flood Warning | BOU | 3 hr |
| Jul 1, 8:46 AM MDT | Flash Flood Watch | BOU | 12 hr |
| Jul 1, 11:51 AM MDT | Areal Flood Advisory | BOU | 84 min |
| Jul 1, 12:24 PM MDT | Flash Flood Warning | BOU | 2 hr |
| Jul 1, 12:28 PM MDT | Areal Flood Advisory | BOU | 92 min |
| Jul 1, 1:05 PM MDT | Areal Flood Advisory | BOU | 85 min |
| Jul 1, 1:12 PM MDT | Areal Flood Advisory | BOU | 93 min |
| Jul 1, 1:28 PM MDT | Flash Flood Warning | BOU | 2 hr |
| Jul 1, 6:52 PM MDT | Areal Flood Advisory | BOU | 83 min |
| Jul 2, 6:42 PM MDT | Severe Thunderstorm Warning | BOU | 33 min |
| Jul 3, 2:22 PM MDT | Special Weather Statement | BOU | 38 min |
| Jul 3, 3:11 PM MDT | Special Weather Statement | BOU | 34 min |
| Jul 3, 3:23 PM MDT | Severe Thunderstorm Warning | BOU | 37 min |
| Jul 3, 3:57 PM MDT | Severe Thunderstorm Warning | BOU | 33 min |
| Jul 9, 1:38 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Jul 9, 2:16 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 9, 2:34 PM MDT | Severe Thunderstorm Warning | BOU | 41 min |
| Jul 9, 3:25 PM MDT | Severe Thunderstorm Warning | BOU | 38 min |
| Jul 9, 11:22 PM MDT | Special Weather Statement | BOU | 38 min |
| Jul 10, 12:05 AM MDT | Special Weather Statement | BOU | 40 min |
| Jul 13, 1:38 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 14, 5:21 PM MDT | Special Weather Statement | BOU | 24 min |
| Jul 14, 6:06 PM MDT | Special Weather Statement | BOU | 24 min |
| Jul 15, 2:09 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 15, 5:01 PM MDT | Severe Thunderstorm Warning | BOU | 44 min |
| Jul 15, 5:44 PM MDT | Severe Thunderstorm Warning | BOU | 29 min |
| Jul 17, 5:09 PM MDT | Special Weather Statement | BOU | 36 min |
| Jul 17, 5:34 PM MDT | Special Weather Statement | BOU | 26 min |
| Jul 29, 2:03 PM MDT | Flash Flood Watch | BOU | 55 hr |
| Jul 30, 3:26 PM MDT | Severe Thunderstorm Warning | BOU | 49 min |
| Jul 30, 3:59 PM MDT | Areal Flood Advisory | BOU | 61 min |
| Jul 30, 4:11 PM MDT | Severe Thunderstorm Warning | BOU | 49 min |
| Jul 30, 6:01 PM MDT | Areal Flood Advisory | BOU | 59 min |
| Jul 30, 7:52 PM MDT | Areal Flood Advisory | BOU | 83 min |
| Jul 30, 9:34 PM MDT | Areal Flood Advisory | BOU | 56 min |
| Jul 30, 10:18 PM MDT | Flash Flood Warning | BOU | 3 hr |
| Jul 30, 11:17 PM MDT | Special Weather Statement | BOU | 28 min |
| Jul 30, 11:24 PM MDT | Areal Flood Advisory | BOU | 81 min |
| Jul 30, 11:40 PM MDT | Areal Flood Advisory | BOU | 60 min |
| Aug 14, 5:11 PM MDT | Severe Thunderstorm Warning | BOU | 32 min |
| Aug 14, 7:38 PM MDT | Severe Thunderstorm Warning | BOU | 52 min |
| Aug 14, 8:28 PM MDT | Severe Thunderstorm Warning | BOU | 47 min |
| Aug 14, 9:31 PM MDT | Special Weather Statement | BOU | 44 min |
| Aug 19, 1:14 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 19, 2:46 PM MDT | Severe Thunderstorm Warning | BOU | 29 min |
| Aug 19, 3:05 PM MDT | Tornado Warning | BOU | 25 min |
| Aug 19, 3:14 PM MDT | Severe Thunderstorm Warning | BOU | 31 min |
| Aug 19, 3:42 PM MDT | Severe Thunderstorm Warning | BOU | 33 min |
| Aug 19, 3:58 PM MDT | Areal Flood Advisory | BOU | 30 min |
| Aug 25, 11:50 PM MDT | Severe Thunderstorm Warning | BOU | 40 min |
| Sep 3, 1:20 PM MDT | Mesoscale Discussion | SPC | 55 min |
| Sep 13, 7:33 PM MDT | Special Weather Statement | BOU | 42 min |
| Sep 13, 9:31 PM MDT | Special Weather Statement | BOU | 29 min |
| Sep 21, 2:07 PM MDT | Frost Advisory | BOU | 18 hr |
| Oct 10, 2:04 PM MDT | Frost Advisory | BOU | 18 hr |
| Oct 12, 2:47 PM MDT | High Wind Warning | BOU | 24 hr |
| 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 26, 3:06 AM MDT | High Wind Watch | BOU | 7 hr |
| Oct 26, 9:51 AM MDT | High Wind Warning | BOU | 14 hr |
| Nov 3, 2:54 AM MDT | Dense Fog Advisory | BOU | 8 hr |
| Nov 15, 1:21 PM MST | Red Flag Warning | BOU | 28 hr |
| Nov 22, 2:17 AM MST | Fire Weather Watch | BOU | 25 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 20, 1:08 PM MST | Red Flag Warning | BOU | 28 hr |
| Dec 22, 3:11 AM MST | Red Flag Warning | BOU | 14 hr |
| Dec 29, 1:18 PM MST | Winter Storm Warning | BOU | 70 hr |
| Dec 29, 1:36 PM MST | High Wind Warning | BOU | 30 hr |
| Dec 30, 3:00 AM MST | Winter Storm Watch | BOU | 11 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.