Alert archive / Colorado / Larimer County
Weather alerts in Larimer County, Colorado, 2018
147 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Larimer County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 147
- Warnings
- 49
- Watches
- 27
- Advisories
- 36
- Busiest month
- July30 alerts
- Busiest day
- July 25, 20187 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 6, 3:35 AM MST | Winter Weather Advisory | BOU | 25 hr |
| Jan 9, 4:19 AM MST | Winter Weather Advisory | BOU | 44 hr |
| Jan 11, 10:44 AM MST | Winter Weather Advisory | BOU | 28 hr |
| Jan 19, 1:54 PM MST | Winter Storm Watch | BOU | 16 hr |
| Jan 20, 5:24 AM MST | Winter Storm Warning | BOU | 36 hr |
| Jan 30, 7:05 PM MST | High Wind Warning | BOU | 8 hr |
| Feb 2, 4:13 PM MST | Winter Weather Advisory | BOU | 43 hr |
| Feb 4, 2:26 PM MST | Winter Weather Advisory | BOU | 37 hr |
| Feb 9, 3:18 PM MST | Winter Weather Advisory | BOU | 26 hr |
| Feb 14, 3:19 AM MST | Winter Storm Warning | BOU | 39 hr |
| Feb 15, 3:52 PM MST | High Wind Watch | BOU | 17 hr |
| Feb 16, 9:13 AM MST | High Wind Warning | BOU | 49 hr |
| Feb 18, 2:01 PM MST | Winter Weather Advisory | BOU | 34 hr |
| Feb 19, 11:42 PM MST | Wind Chill Advisory | BOU | 8 hr |
| Feb 23, 3:13 AM MST | Winter Weather Advisory | BOU | 27 hr |
| Mar 3, 3:03 PM MST | Winter Weather Advisory | BOU | 41 hr |
| Mar 3, 3:17 PM MST | Fire Weather Watch | BOU | 19 hr |
| Mar 3, 3:17 PM MST | Red Flag Warning | BOU | 28 hr |
| Mar 4, 5:22 AM MST | High Wind Watch | BOU | 9 hr |
| Mar 4, 5:22 AM MST | High Wind Warning | BOU | 36 hr |
| Mar 4, 9:49 AM MST | Red Flag Warning | BOU | 32 hr |
| Mar 7, 2:58 PM MST | Fire Weather Watch | BOU | 24 hr |
| Mar 8, 3:06 PM MST | Red Flag Warning | BOU | 27 hr |
| Mar 15, 3:45 AM MDT | Winter Weather Advisory | BOU | 25 hr |
| Mar 15, 3:54 AM MDT | High Wind Watch | BOU | 11 hr |
| Mar 17, 2:40 PM MDT | Winter Weather Advisory | BOU | 37 hr |
| Mar 22, 4:43 AM MDT | Winter Weather Advisory | BOU | 37 hr |
| Mar 25, 7:31 PM MDT | Dense Fog Advisory | BOU | 13 hr |
| Mar 28, 4:19 AM MDT | Winter Weather Advisory | BOU | 20 hr |
| Apr 2, 1:46 PM MDT | High Wind Warning | BOU | 21 hr |
| Apr 5, 4:01 AM MDT | Winter Weather Advisory | BOU | 44 hr |
| Apr 7, 4:26 AM MDT | Winter Storm Warning | BOU | 29 hr |
| Apr 10, 3:44 AM MDT | Red Flag Warning | BOU | 39 hr |
| Apr 10, 3:44 AM MDT | Red Flag Warning | BOU | 65 hr |
| Apr 11, 3:08 PM MDT | Winter Weather Advisory | BOU | 54 hr |
| Apr 17, 4:58 AM MDT | High Wind Warning | BOU | 16 hr |
| Apr 19, 4:41 AM MDT | Winter Storm Watch | BOU | 11 hr |
| Apr 19, 3:14 PM MDT | Winter Storm Warning | BOU | 28 hr |
| Apr 19, 3:14 PM MDT | Winter Weather Advisory | BOU | 44 hr |
| Apr 23, 6:11 PM MDT | Special Weather Statement | BOU | 49 min |
| May 1, 3:40 AM MDT | Winter Storm Watch | BOU | 12 hr |
| May 1, 1:01 PM MDT | Mesoscale Discussion | SPC | 119 min |
| May 1, 3:49 PM MDT | Winter Storm Warning | BOU | 44 hr |
| May 2, 4:56 AM MDT | Winter Weather Advisory | BOU | 31 hr |
| May 11, 12:00 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 11, 2:02 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 11, 5:39 PM MDT | Mesoscale Discussion | SPC | 96 min |
| May 11, 10:58 PM MDT | Dense Fog Advisory | BOU | 10 hr |
| May 13, 12:22 AM MDT | Dense Fog Advisory | BOU | 9 hr |
| May 14, 12:38 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 14, 3:50 PM MDT | Severe Thunderstorm Warning | BOU | 40 min |
| May 18, 3:48 AM MDT | Winter Storm Watch | BOU | 11 hr |
| May 18, 11:02 AM MDT | Flash Flood Watch | BOU | 30 hr |
| May 18, 2:29 PM MDT | Winter Weather Advisory | BOU | 13 hr |
| May 18, 3:06 PM MDT | Mesoscale Discussion | SPC | 114 min |
| May 22, 4:56 PM MDT | Severe Thunderstorm Warning | BOU | 26 min |
| May 22, 4:56 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 22, 6:01 PM MDT | Severe Thunderstorm Warning | BOU | 44 min |
| May 23, 5:07 PM MDT | Mesoscale Discussion | SPC | 83 min |
| May 27, 12:27 PM MDT | Special Weather Statement | BOU | 33 min |
| May 27, 1:13 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 27, 4:30 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 28, 1:39 PM MDT | Mesoscale Discussion | SPC | 96 min |
| May 28, 2:01 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 14, 3:27 AM MDT | Red Flag Warning | BOU | 17 hr |
| Jun 18, 5:56 PM MDT | Severe Thunderstorm Warning | BOU | 34 min |
| Jun 19, 12:25 PM MDT | Tornado Watch | SPC | 7 hr |
| Jun 19, 12:33 PM MDT | Severe Thunderstorm Warning | BOU | 42 min |
| Jun 19, 1:18 PM MDT | Severe Thunderstorm Warning | BOU | 42 min |
| Jun 19, 1:54 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 19, 2:02 PM MDT | Severe Thunderstorm Warning | BOU | 43 min |
| Jun 19, 4:15 PM MDT | Severe Thunderstorm Warning | BOU | 30 min |
| Jun 26, 2:53 PM MDT | Fire Weather Watch | BOU | 13 hr |
| Jun 27, 3:39 AM MDT | Red Flag Warning | BOU | 42 hr |
| Jun 28, 2:42 PM MDT | Red Flag Warning | BOU | 28 hr |
| Jun 30, 1:03 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Jun 30, 3:59 PM MDT | Severe Thunderstorm Warning | BOU | 31 min |
| Jul 4, 1:51 PM MDT | Mesoscale Discussion | SPC | 54 min |
| Jul 4, 5:41 PM MDT | Severe Thunderstorm Warning | BOU | 49 min |
| Jul 4, 6:02 PM MDT | Flash Flood Warning | BOU | 69 min |
| Jul 4, 6:29 PM MDT | Severe Thunderstorm Warning | BOU | 32 min |
| Jul 5, 10:16 AM MDT | Flash Flood Watch | BOU | 9 hr |
| Jul 8, 10:04 PM MDT | Areal Flood Advisory | BOU | 86 min |
| Jul 12, 1:05 PM MDT | Special Weather Statement | BOU | 40 min |
| Jul 12, 1:37 PM MDT | Special Weather Statement | CYS | 38 min |
| Jul 12, 3:01 PM MDT | Special Weather Statement | BOU | 44 min |
| Jul 15, 4:14 AM MDT | Flash Flood Watch | BOU | 16 hr |
| Jul 17, 1:52 PM MDT | Special Weather Statement | CYS | 38 min |
| Jul 23, 1:00 PM MDT | Mesoscale Discussion | SPC | 90 min |
| Jul 24, 3:44 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 25, 10:41 AM MDT | Flash Flood Watch | BOU | 11 hr |
| Jul 25, 12:48 PM MDT | Mesoscale Discussion | SPC | 57 min |
| Jul 25, 1:22 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 25, 1:48 PM MDT | Special Weather Statement | CYS | 42 min |
| Jul 25, 3:10 PM MDT | Special Weather Statement | BOU | 50 min |
| Jul 25, 4:04 PM MDT | Areal Flood Advisory | BOU | 102 min |
| Jul 25, 5:08 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 26, 1:49 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 26, 6:07 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Jul 26, 6:50 PM MDT | Severe Thunderstorm Warning | BOU | 40 min |
| Jul 26, 8:00 PM MDT | Severe Thunderstorm Warning | BOU | 30 min |
| Jul 27, 1:04 PM MDT | Tornado Watch | SPC | 8 hr |
| Jul 27, 1:56 PM MDT | Special Weather Statement | CYS | 49 min |
| Jul 27, 5:56 PM MDT | Severe Thunderstorm Warning | BOU | 34 min |
| Jul 29, 5:23 PM MDT | Mesoscale Discussion | SPC | 67 min |
| Jul 29, 5:54 PM MDT | Severe Thunderstorm Warning | BOU | 51 min |
| Jul 29, 6:43 PM MDT | Severe Thunderstorm Warning | BOU | 32 min |
| Aug 5, 6:05 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Aug 6, 2:02 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Aug 6, 2:37 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 6, 5:24 PM MDT | Mesoscale Discussion | SPC | 66 min |
| Aug 6, 8:06 PM MDT | Mesoscale Discussion | SPC | 54 min |
| Aug 7, 5:17 PM MDT | Severe Thunderstorm Warning | BOU | 43 min |
| Aug 14, 3:12 PM MDT | Special Weather Statement | BOU | 48 min |
| Aug 14, 4:30 PM MDT | Severe Thunderstorm Warning | BOU | 27 min |
| Aug 14, 4:56 PM MDT | Severe Thunderstorm Warning | BOU | 22 min |
| Aug 17, 2:56 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 17, 3:49 PM MDT | Special Weather Statement | CYS | 41 min |
| Aug 18, 7:26 PM MDT | Special Weather Statement | BOU | 49 min |
| Aug 26, 3:58 AM MDT | Fire Weather Watch | BOU | 12 hr |
| Aug 26, 3:35 PM MDT | Red Flag Warning | BOU | 26 hr |
| Sep 5, 12:05 AM MDT | Areal Flood Advisory | BOU | 85 min |
| Sep 5, 1:25 AM MDT | Areal Flood Advisory | BOU | 95 min |
| Sep 11, 3:06 PM MDT | Red Flag Warning | BOU | 53 hr |
| Sep 25, 5:02 AM MDT | Frost Advisory | BOU | 22 hr |
| Sep 27, 4:01 PM MDT | Fire Weather Watch | BOU | 19 hr |
| Sep 28, 10:32 AM MDT | Red Flag Warning | BOU | 32 hr |
| Oct 4, 12:52 PM MDT | Severe Thunderstorm Warning | BOU | 38 min |
| Oct 7, 2:30 PM MDT | Freeze Watch | BOU | 25 hr |
| Oct 8, 3:01 PM MDT | Freeze Warning | BOU | 13 hr |
| Oct 9, 4:25 AM MDT | Freeze Warning | BOU | 30 hr |
| Oct 9, 3:24 PM MDT | Winter Weather Advisory | BOU | 30 hr |
| Oct 10, 2:27 PM MDT | Freeze Warning | BOU | 19 hr |
| Oct 12, 2:20 PM MDT | Winter Weather Advisory | BOU | 49 hr |
| Nov 1, 3:02 PM MDT | Winter Weather Advisory | BOU | 49 hr |
| Nov 2, 11:02 PM MDT | Severe Thunderstorm Warning | BOU | 43 min |
| Nov 3, 3:32 PM MDT | Winter Weather Advisory | BOU | 44 hr |
| Nov 10, 4:18 AM MST | Winter Weather Advisory | BOU | 44 hr |
| Nov 16, 10:36 AM MST | Winter Weather Advisory | BOU | 34 hr |
| Nov 21, 2:50 PM MST | Winter Storm Watch | BOU | 25 hr |
| Nov 22, 3:49 PM MST | Winter Storm Warning | BOU | 58 hr |
| Nov 24, 5:39 AM MST | High Wind Warning | BOU | 19 hr |
| Dec 1, 2:47 AM MST | Dense Fog Advisory | BOU | 4 hr |
| Dec 17, 3:32 PM MST | High Wind Watch | BOU | 18 hr |
| Dec 18, 9:57 AM MST | High Wind Warning | BOU | 31 hr |
| Dec 18, 10:08 AM MST | Winter Weather Advisory | BOU | 31 hr |
| Dec 30, 1:56 PM MST | Winter Weather Advisory | BOU | 27 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 | 21 |
| Severe Thunderstorm Watch | 6 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 23 |
| Special Weather Statement | 12 |
| Flooding | |
| Flash Flood Warning | 1 |
| Flash Flood Watch | 4 |
| Areal Flood Advisory | 4 |
| Winter | |
| Winter Storm Warning | 6 |
| Winter Storm Watch | 5 |
| Winter Weather Advisory | 26 |
| Cold | |
| Freeze Warning | 3 |
| Freeze Watch | 1 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 7 |
| High Wind Watch | 4 |
| Fire | |
| Red Flag Warning | 11 |
| Fire Weather Watch | 5 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.