Alert archive / Colorado / Jefferson County
Weather alerts in Jefferson County, Colorado, 2017
110 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Jefferson County and its neighbors
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 110
- Warnings
- 41
- Watches
- 33
- Advisories
- 28
- Busiest month
- March29 alerts
- Busiest day
- May 8, 20177 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 3, 5:08 AM MST | Winter Storm Watch | BOU | 10 hr |
| Jan 3, 5:08 AM MST | Winter Storm Warning | BOU | 54 hr |
| Jan 3, 3:08 PM MST | Winter Storm Watch | BOU | 14 hr |
| Jan 5, 11:10 AM MST | Winter Storm Warning | BOU | 4 hr |
| Jan 5, 3:19 PM MST | Winter Weather Advisory | BOU | 6 hr |
| Jan 7, 3:11 PM MST | Winter Storm Watch | BOU | 20 hr |
| Jan 7, 3:22 PM MST | High Wind Watch | BOU | 20 hr |
| Jan 8, 11:14 AM MST | Winter Storm Warning | BOU | 42 hr |
| Jan 8, 11:24 AM MST | High Wind Watch | BOU | 9 hr |
| Jan 8, 11:24 AM MST | High Wind Warning | BOU | 28 hr |
| Jan 10, 4:29 AM MST | High Wind Watch | BOU | 5 hr |
| Jan 10, 4:53 AM MST | Winter Weather Advisory | BOU | 19 hr |
| Jan 10, 9:38 AM MST | High Wind Warning | BOU | 19 hr |
| Jan 10, 11:53 AM MST | Winter Storm Warning | BOU | 36 hr |
| Jan 12, 3:26 PM MST | Winter Weather Advisory | BOU | 3 hr |
| Jan 24, 11:45 AM MST | Freezing Fog Advisory | BOU | 2 hr |
| Feb 1, 1:44 PM MST | Winter Weather Advisory | BOU | 19 hr |
| Feb 4, 3:16 PM MST | Winter Storm Watch | BOU | 38 hr |
| Feb 6, 4:58 AM MST | Winter Storm Warning | BOU | 55 hr |
| Feb 10, 2:22 AM MST | High Wind Warning | BOU | 9 hr |
| Feb 20, 3:49 AM MST | Fire Weather Watch | BOU | 11 hr |
| Feb 20, 2:28 PM MST | Red Flag Warning | BOU | 28 hr |
| Feb 27, 8:46 PM MST | Winter Weather Advisory | BOU | 20 hr |
| Mar 3, 3:14 PM MST | Fire Weather Watch | BOU | 24 hr |
| Mar 3, 3:14 PM MST | Red Flag Warning | BOU | 27 hr |
| Mar 4, 3:26 PM MST | Fire Weather Watch | BOU | 13 hr |
| Mar 4, 3:26 PM MST | Red Flag Warning | BOU | 28 hr |
| Mar 5, 4:02 AM MST | Red Flag Warning | BOU | 38 hr |
| Mar 5, 4:02 AM MST | High Wind Watch | BOU | 10 hr |
| Mar 5, 9:47 AM MST | Winter Weather Advisory | BOU | 32 hr |
| Mar 5, 2:28 PM MST | High Wind Warning | BOU | 29 hr |
| Mar 6, 4:16 AM MST | High Wind Watch | BOU | 11 hr |
| Mar 6, 5:44 AM MST | Fire Weather Watch | BOU | 10 hr |
| Mar 6, 3:35 PM MST | Red Flag Warning | BOU | 25 hr |
| Mar 9, 3:12 AM MST | Red Flag Warning | BOU | 15 hr |
| Mar 11, 4:29 AM MST | Fire Weather Watch | BOU | 8 hr |
| Mar 11, 12:56 PM MST | Red Flag Warning | BOU | 28 hr |
| Mar 15, 2:15 PM MDT | Fire Weather Watch | BOU | 17 hr |
| Mar 15, 9:29 PM MDT | Red Flag Warning | BOU | 22 hr |
| Mar 17, 4:49 PM MDT | Fire Weather Watch | BOU | 35 hr |
| Mar 18, 3:49 AM MDT | Red Flag Warning | BOU | 39 hr |
| Mar 20, 5:24 AM MDT | Red Flag Warning | BOU | 12 hr |
| Mar 22, 10:47 AM MDT | Red Flag Warning | BOU | 31 hr |
| Mar 22, 3:58 PM MDT | Winter Storm Watch | BOU | 24 hr |
| Mar 23, 5:00 AM MDT | Winter Weather Advisory | BOU | 29 hr |
| Mar 23, 3:28 PM MDT | Winter Storm Warning | BOU | 15 hr |
| Mar 27, 3:14 PM MDT | Winter Storm Watch | BOU | 15 hr |
| Mar 28, 6:04 AM MDT | Winter Storm Warning | BOU | 22 hr |
| Mar 28, 6:04 AM MDT | Winter Weather Advisory | BOU | 22 hr |
| Mar 30, 9:36 AM MDT | Winter Storm Watch | BOU | 24 hr |
| Mar 31, 4:37 AM MDT | Winter Storm Warning | BOU | 23 hr |
| Mar 31, 4:37 AM MDT | Winter Weather Advisory | BOU | 29 hr |
| Apr 2, 2:52 PM MDT | Winter Storm Watch | BOU | 13 hr |
| Apr 3, 4:10 AM MDT | Winter Weather Advisory | BOU | 44 hr |
| Apr 13, 2:08 PM MDT | Fire Weather Watch | BOU | 19 hr |
| Apr 20, 3:52 AM MDT | Winter Weather Advisory | BOU | 29 hr |
| Apr 26, 4:17 AM MDT | Winter Weather Advisory | BOU | 38 hr |
| Apr 27, 4:46 AM MDT | Winter Storm Watch | BOU | 24 hr |
| Apr 28, 4:49 AM MDT | Winter Storm Warning | BOU | 37 hr |
| Apr 28, 4:49 AM MDT | Winter Weather Advisory | BOU | 24 hr |
| Apr 29, 3:25 PM MDT | Freeze Warning | BOU | 17 hr |
| May 3, 4:17 AM MDT | Frost Advisory | BOU | 27 hr |
| May 8, 12:01 PM MDT | Mesoscale Discussion | SPC | 89 min |
| May 8, 12:35 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 8, 2:25 PM MDT | Severe Thunderstorm Warning | BOU | 21 min |
| May 8, 2:45 PM MDT | Severe Thunderstorm Warning | BOU | 45 min |
| May 8, 2:59 PM MDT | Mesoscale Discussion | SPC | 91 min |
| May 8, 3:21 PM MDT | Severe Thunderstorm Warning | BOU | 39 min |
| May 8, 3:33 PM MDT | Areal Flood Advisory | BOU | 57 min |
| May 16, 4:27 PM MDT | Winter Storm Watch | BOU | 19 hr |
| May 17, 4:41 AM MDT | Winter Storm Warning | BOU | 53 hr |
| May 17, 11:40 AM MDT | Winter Storm Watch | BOU | 23 hr |
| May 19, 4:01 AM MDT | Freeze Warning | BOU | 28 hr |
| May 26, 1:00 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 7, 2:12 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 11, 2:49 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 3:58 AM MDT | Red Flag Warning | BOU | 15 hr |
| Jun 28, 3:07 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Jul 20, 3:03 PM MDT | Severe Thunderstorm Warning | BOU | 27 min |
| Jul 26, 7:09 PM MDT | Flash Flood Warning | BOU | 3 hr |
| Jul 26, 7:50 PM MDT | Areal Flood Advisory | BOU | 115 min |
| Jul 28, 2:39 PM MDT | Areal Flood Advisory | BOU | 3 hr |
| Jul 29, 3:46 AM MDT | Flash Flood Watch | BOU | 23 hr |
| Jul 30, 5:28 PM MDT | Areal Flood Advisory | BOU | 2 hr |
| Jul 30, 5:56 PM MDT | Areal Flood Advisory | BOU | 2 hr |
| Aug 5, 4:26 PM MDT | Special Weather Statement | BOU | 34 min |
| Aug 10, 3:18 PM MDT | Severe Thunderstorm Warning | BOU | 42 min |
| Aug 12, 3:18 PM MDT | Special Weather Statement | BOU | 27 min |
| Aug 12, 3:38 PM MDT | Areal Flood Advisory | BOU | 97 min |
| Aug 13, 3:12 PM MDT | Severe Thunderstorm Warning | BOU | 22 min |
| Sep 17, 2:32 PM MDT | Special Weather Statement | BOU | 43 min |
| Sep 18, 3:22 AM MDT | Fire Weather Watch | BOU | 7 hr |
| Sep 18, 10:47 AM MDT | Fire Weather Watch | BOU | 16 hr |
| Sep 18, 10:47 AM MDT | Red Flag Warning | BOU | 33 hr |
| Oct 1, 3:20 AM MDT | Winter Weather Advisory | BOU | 45 hr |
| Oct 2, 8:14 PM MDT | Frost Advisory | BOU | 13 hr |
| Oct 7, 4:53 AM MDT | Winter Storm Watch | BOU | 23 hr |
| Oct 8, 4:14 AM MDT | Winter Storm Warning | BOU | 35 hr |
| Oct 8, 4:18 AM MDT | Freeze Warning | BOU | 54 hr |
| Oct 28, 9:20 AM MDT | Winter Weather Advisory | BOU | 4 hr |
| Oct 31, 4:41 AM MDT | High Wind Watch | BOU | 6 hr |
| Oct 31, 11:06 AM MDT | High Wind Warning | BOU | 33 hr |
| Nov 6, 6:37 AM MST | Dense Fog Advisory | BOU | 3 hr |
| Nov 15, 3:20 PM MST | Winter Storm Watch | BOU | 24 hr |
| Nov 16, 4:32 AM MST | Winter Storm Warning | BOU | 47 hr |
| Dec 20, 4:03 AM MST | Winter Weather Advisory | BOU | 38 hr |
| Dec 22, 5:05 AM MST | Winter Weather Advisory | BOU | 42 hr |
| Dec 24, 4:23 AM MST | Winter Weather Advisory | BOU | 50 hr |
| Dec 28, 2:30 AM MST | High Wind Watch | BOU | 8 hr |
| Dec 28, 10:07 AM MST | High Wind Warning | BOU | 29 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 | 6 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 5 |
| Special Weather Statement | 3 |
| Flooding | |
| Flash Flood Warning | 1 |
| Flash Flood Watch | 1 |
| Areal Flood Advisory | 6 |
| Winter | |
| Winter Storm Warning | 12 |
| Winter Storm Watch | 13 |
| Winter Weather Advisory | 18 |
| Cold | |
| Freeze Warning | 3 |
| Frost Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 6 |
| High Wind Watch | 7 |
| Fire | |
| Red Flag Warning | 13 |
| Fire Weather Watch | 10 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
| Freezing Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe 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.