Alert archive / Colorado / Grand County
Weather alerts in Grand County, Colorado, 2021
141 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Grand County and its neighbors
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 141
- Warnings
- 47
- Watches
- 26
- Advisories
- 64
- Busiest month
- July36 alerts
- Busiest day
- July 30, 20219 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 4, 4:02 AM MST | Winter Weather Advisory | BOU | 37 hr |
| Jan 17, 1:56 PM MST | Winter Weather Advisory | BOU | 19 hr |
| Jan 22, 4:45 AM MST | Winter Weather Advisory | BOU | 36 hr |
| Feb 2, 3:09 AM MST | Winter Weather Advisory | BOU | 53 hr |
| Feb 3, 3:27 PM MST | Winter Storm Warning | BOU | 17 hr |
| Feb 4, 3:30 AM MST | Winter Storm Warning | BOU | 50 hr |
| Feb 4, 2:39 PM MST | Winter Weather Advisory | BOU | 38 hr |
| Feb 6, 3:42 AM MST | Winter Weather Advisory | BOU | 37 hr |
| Feb 6, 3:47 AM MST | High Wind Watch | BOU | 8 hr |
| Feb 6, 11:18 AM MST | High Wind Warning | BOU | 30 hr |
| Feb 8, 2:37 PM MST | Winter Weather Advisory | BOU | 44 hr |
| Feb 11, 4:10 AM MST | Winter Weather Advisory | BOU | 49 hr |
| Feb 12, 8:46 PM MST | Winter Weather Advisory | BOU | 40 hr |
| Feb 15, 2:56 AM MST | Winter Weather Advisory | BOU | 39 hr |
| Feb 19, 2:08 PM MST | Winter Weather Advisory | BOU | 39 hr |
| Feb 26, 2:56 AM MST | Winter Weather Advisory | BOU | 33 hr |
| Mar 3, 2:40 PM MST | Winter Weather Advisory | BOU | 33 hr |
| Mar 9, 2:40 AM MST | Winter Weather Advisory | BOU | 38 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 12, 2:17 PM MST | Winter Weather Advisory | BOU | 63 hr |
| Mar 13, 12:22 PM MST | Mesoscale Discussion | SPC | 4 hr |
| Mar 20, 2:11 PM MDT | Winter Storm Warning | BOU | 44 hr |
| Mar 21, 2:43 AM MDT | Winter Weather Advisory | BOU | 31 hr |
| Mar 28, 2:08 PM MDT | High Wind Watch | BOU | 19 hr |
| Mar 28, 8:44 PM MDT | High Wind Warning | BOU | 19 hr |
| Apr 13, 2:55 AM MDT | Winter Weather Advisory | BOU | 27 hr |
| Apr 14, 3:03 PM MDT | Winter Weather Advisory | BOU | 45 hr |
| Apr 18, 4:35 AM MDT | Winter Storm Watch | BOU | 9 hr |
| Apr 18, 1:56 PM MDT | Winter Weather Advisory | BOU | 37 hr |
| Apr 19, 4:26 AM MDT | Winter Storm Warning | BOU | 23 hr |
| Apr 26, 3:10 PM MDT | Winter Storm Watch | BOU | 12 hr |
| Apr 27, 3:16 AM MDT | Winter Storm Warning | BOU | 30 hr |
| May 1, 3:56 AM MDT | Winter Storm Watch | BOU | 24 hr |
| May 2, 3:42 AM MDT | Winter Storm Warning | BOU | 34 hr |
| May 2, 2:19 PM MDT | Winter Weather Advisory | BOU | 23 hr |
| May 8, 4:08 PM MDT | Special Weather Statement | BOU | 22 min |
| May 9, 3:40 AM MDT | Winter Storm Watch | BOU | 11 hr |
| May 9, 2:19 PM MDT | Winter Storm Warning | BOU | 52 hr |
| May 17, 2:22 PM MDT | Areal Flood Advisory | BOU | 113 min |
| May 19, 11:53 AM MDT | Areal Flood Advisory | BOU | 82 min |
| May 31, 3:36 PM MDT | Flash Flood Warning | BOU | 84 min |
| Jun 5, 1:29 PM MDT | Areal Flood Advisory | BOU | 109 min |
| Jun 5, 1:59 PM MDT | Flash Flood Warning | BOU | 78 min |
| Jun 5, 2:43 PM MDT | Areal Flood Advisory | BOU | 2 hr |
| Jun 9, 2:54 PM MDT | Red Flag Warning | BOU | 33 hr |
| Jun 19, 11:54 AM MDT | Fire Weather Watch | BOU | 15 hr |
| Jun 20, 3:13 AM MDT | Red Flag Warning | BOU | 16 hr |
| Jun 21, 5:10 AM MDT | Fire Weather Watch | BOU | 9 hr |
| Jun 21, 2:18 PM MDT | Fire Weather Watch | BOU | 38 hr |
| Jun 21, 2:18 PM MDT | Red Flag Warning | BOU | 29 hr |
| Jun 23, 4:05 AM MDT | Red Flag Warning | BOU | 15 hr |
| Jun 29, 3:51 PM MDT | Areal Flood Advisory | BOU | 114 min |
| Jul 1, 12:58 PM MDT | Areal Flood Advisory | BOU | 92 min |
| Jul 1, 1:33 PM MDT | Areal Flood Advisory | BOU | 87 min |
| Jul 2, 1:37 PM MDT | Areal Flood Advisory | BOU | 67 min |
| Jul 5, 3:13 AM MDT | Flash Flood Watch | BOU | 21 hr |
| Jul 5, 1:36 PM MDT | Areal Flood Advisory | BOU | 84 min |
| Jul 5, 2:00 PM MDT | Flash Flood Warning | BOU | 90 min |
| Jul 5, 3:28 PM MDT | Flash Flood Warning | BOU | 92 min |
| Jul 5, 5:31 PM MDT | Flash Flood Warning | BOU | 89 min |
| Jul 5, 6:56 PM MDT | Flash Flood Warning | BOU | 79 min |
| Jul 9, 3:00 PM MDT | Areal Flood Advisory | BOU | 2 hr |
| Jul 20, 3:27 PM MDT | Areal Flood Advisory | BOU | 78 min |
| Jul 21, 3:18 AM MDT | Flash Flood Watch | BOU | 17 hr |
| Jul 21, 1:56 PM MDT | Areal Flood Advisory | BOU | 3 hr |
| Jul 21, 3:16 PM MDT | Flash Flood Warning | BOU | 3 hr |
| Jul 21, 6:11 PM MDT | Flash Flood Warning | BOU | 3 hr |
| Jul 22, 2:14 PM MDT | Areal Flood Advisory | BOU | 22 min |
| Jul 22, 2:15 PM MDT | Flash Flood Watch | BOU | 30 hr |
| Jul 22, 2:36 PM MDT | Flash Flood Warning | BOU | 5 hr |
| Jul 22, 3:13 PM MDT | Flash Flood Warning | BOU | 3 hr |
| Jul 23, 2:41 PM MDT | Areal Flood Advisory | BOU | 84 min |
| Jul 23, 4:05 PM MDT | Flash Flood Warning | BOU | 3 hr |
| Jul 29, 2:03 PM MDT | Flash Flood Watch | BOU | 55 hr |
| Jul 29, 6:37 PM MDT | Areal Flood Advisory | BOU | 83 min |
| Jul 29, 7:27 PM MDT | Areal Flood Advisory | BOU | 93 min |
| Jul 29, 8:14 PM MDT | Flash Flood Warning | BOU | 112 min |
| Jul 30, 2:30 PM MDT | Flash Flood Warning | BOU | 3 hr |
| Jul 30, 2:51 PM MDT | Flash Flood Warning | BOU | 4 hr |
| Jul 30, 3:02 PM MDT | Flash Flood Warning | BOU | 3 hr |
| Jul 30, 3:45 PM MDT | Areal Flood Advisory | BOU | 2 hr |
| Jul 30, 4:16 PM MDT | Flash Flood Warning | BOU | 3 hr |
| Jul 30, 5:37 PM MDT | Flash Flood Warning | BOU | 99 min |
| Jul 31, 12:27 PM MDT | Flash Flood Warning | BOU | 3 hr |
| Jul 31, 12:29 PM MDT | Areal Flood Advisory | BOU | 91 min |
| Jul 31, 12:32 PM MDT | Areal Flood Advisory | BOU | 88 min |
| Jul 31, 12:34 PM MDT | Areal Flood Advisory | BOU | 86 min |
| Jul 31, 1:33 PM MDT | Areal Flood Advisory | BOU | 87 min |
| Aug 1, 2:04 PM MDT | Flash Flood Watch | BOU | 32 hr |
| Aug 2, 2:40 PM MDT | Areal Flood Advisory | BOU | 95 min |
| Aug 2, 3:38 PM MDT | Areal Flood Advisory | BOU | 82 min |
| Aug 2, 4:16 PM MDT | Areal Flood Advisory | BOU | 89 min |
| Aug 2, 5:08 PM MDT | Areal Flood Advisory | BOU | 82 min |
| Aug 2, 5:40 PM MDT | Areal Flood Advisory | BOU | 95 min |
| Aug 3, 3:41 AM MDT | Flash Flood Watch | BOU | 18 hr |
| Aug 3, 8:10 AM MDT | Areal Flood Advisory | BOU | 3 hr |
| Aug 13, 1:20 PM MDT | Areal Flood Advisory | BOU | 85 min |
| Aug 13, 1:42 PM MDT | Areal Flood Advisory | BOU | 2 hr |
| Aug 13, 2:27 PM MDT | Flash Flood Warning | BOU | 2 hr |
| Aug 13, 3:36 PM MDT | Areal Flood Advisory | BOU | 69 min |
| Aug 13, 5:39 PM MDT | Flash Flood Warning | BOU | 2 hr |
| Aug 13, 5:40 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 13, 6:10 PM MDT | Areal Flood Advisory | BOU | 99 min |
| Aug 15, 2:32 PM MDT | Areal Flood Advisory | BOU | 88 min |
| Aug 16, 4:06 PM MDT | Areal Flood Advisory | BOU | 18 min |
| Aug 16, 4:24 PM MDT | Flash Flood Warning | BOU | 111 min |
| Aug 16, 5:02 PM MDT | Areal Flood Advisory | BOU | 88 min |
| Aug 23, 1:05 PM MDT | Fire Weather Watch | BOU | 14 hr |
| Aug 23, 2:52 PM MDT | Fire Weather Watch | BOU | 37 hr |
| Aug 26, 9:00 PM MDT | Special Weather Statement | BOU | 30 min |
| Aug 28, 3:24 AM MDT | Red Flag Warning | BOU | 16 hr |
| Sep 2, 5:04 PM MDT | Areal Flood Advisory | BOU | 63 min |
| Sep 15, 2:31 PM MDT | Fire Weather Watch | BOU | 37 hr |
| Sep 15, 2:31 PM MDT | Red Flag Warning | BOU | 28 hr |
| Oct 11, 2:55 PM MDT | Winter Weather Advisory | BOU | 39 hr |
| Oct 25, 3:02 PM MDT | Winter Weather Advisory | BOU | 33 hr |
| Nov 1, 9:09 AM MDT | Winter Weather Advisory | BOU | 36 hr |
| Nov 22, 2:40 PM MST | Red Flag Warning | BOU | 26 hr |
| Dec 4, 2:49 AM MST | High Wind Watch | BOU | 12 hr |
| Dec 4, 2:41 PM MST | High Wind Warning | BOU | 20 hr |
| Dec 7, 1:47 PM MST | Winter Storm Watch | BOU | 22 hr |
| Dec 8, 11:25 AM MST | Winter Storm Warning | BOU | 54 hr |
| Dec 8, 11:25 AM MST | Winter Weather Advisory | BOU | 54 hr |
| Dec 10, 4:05 AM MST | High Wind Watch | BOU | 10 hr |
| Dec 10, 1:56 PM MST | High Wind Warning | BOU | 37 hr |
| Dec 14, 11:54 AM MST | Winter Weather Advisory | BOU | 32 hr |
| Dec 15, 6:49 AM MST | Snow Squall Warning | BOU | 56 min |
| Dec 16, 3:27 AM MST | Winter Weather Advisory | BOU | 33 hr |
| Dec 22, 2:47 AM MST | Winter Storm Watch | BOU | 12 hr |
| Dec 22, 2:33 PM MST | Winter Storm Warning | BOU | 68 hr |
| Dec 22, 2:33 PM MST | Winter Weather Advisory | BOU | 66 hr |
| Dec 25, 3:46 AM MST | Winter Storm Watch | BOU | 10 hr |
| Dec 25, 1:48 PM MST | Winter Storm Warning | BOU | 66 hr |
| Dec 25, 1:48 PM MST | Winter Weather Advisory | BOU | 66 hr |
| Dec 26, 1:33 PM MST | Snow Squall Warning | BOU | 57 min |
| Dec 28, 1:44 PM MST | High Wind Watch | BOU | 24 hr |
| Dec 28, 1:59 PM MST | Winter Storm Watch | BOU | 23 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 Weather Advisory | BOU | 11 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 | |
| Mesoscale Discussion | 2 |
| Special Weather Statement | 2 |
| Flooding | |
| Flash Flood Warning | 21 |
| Flash Flood Watch | 6 |
| Areal Flood Advisory | 35 |
| Winter | |
| Snow Squall Warning | 2 |
| Winter Storm Warning | 12 |
| Winter Storm Watch | 9 |
| Winter Weather Advisory | 29 |
| Wind and dust | |
| High Wind Warning | 5 |
| High Wind Watch | 5 |
| Fire | |
| Red Flag Warning | 7 |
| Fire Weather Watch | 6 |
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.