Alert archive / Colorado / Larimer County
Weather alerts in Larimer County, Colorado, 2015
140 weather alerts in 2015, 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 2015. Tap one for its archive.
- Alerts
- 140
- Warnings
- 52
- Watches
- 29
- Advisories
- 40
- Busiest month
- June34 alerts
- Busiest day
- June 5, 20159 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, 5:49 AM MST | High Wind Watch | BOU | 23 hr |
| Jan 5, 4:39 AM MST | High Wind Warning | BOU | 15 hr |
| Jan 7, 12:38 AM MST | Dense Fog Advisory | BOU | 8 hr |
| Jan 7, 3:25 AM MST | Winter Weather Advisory | BOU | 6 hr |
| Jan 8, 3:08 PM MST | Winter Weather Advisory | BOU | 17 hr |
| Jan 16, 7:05 PM MST | High Wind Warning | BOU | 5 hr |
| Feb 3, 5:14 AM MST | Winter Storm Warning | BOU | 13 hr |
| Feb 3, 6:11 PM MST | Winter Storm Warning | BOU | 27 hr |
| Feb 15, 3:56 AM MST | Winter Weather Advisory | BOU | 40 hr |
| Feb 15, 1:38 PM MST | Winter Storm Warning | BOU | 30 hr |
| Feb 17, 9:02 PM MST | Winter Weather Advisory | BOU | 18 hr |
| Feb 19, 2:26 PM MST | Winter Storm Watch | BOU | 22 hr |
| Feb 20, 4:25 AM MST | Winter Storm Warning | BOU | 67 hr |
| Feb 20, 12:53 PM MST | Winter Weather Advisory | BOU | 58 hr |
| Feb 21, 12:38 PM MST | Mesoscale Discussion | SPC | 5 hr |
| Feb 24, 3:13 PM MST | Winter Storm Watch | BOU | 13 hr |
| Feb 25, 4:18 AM MST | Winter Storm Warning | BOU | 24 hr |
| Feb 25, 4:18 AM MST | Winter Weather Advisory | BOU | 24 hr |
| Mar 1, 2:31 PM MST | Winter Storm Watch | BOU | 15 hr |
| Mar 1, 2:31 PM MST | Winter Storm Warning | BOU | 62 hr |
| Mar 3, 4:27 AM MST | Winter Weather Advisory | BOU | 25 hr |
| Mar 16, 3:39 AM MDT | Red Flag Warning | BOU | 14 hr |
| Mar 17, 3:36 PM MDT | Winter Storm Watch | BOU | 14 hr |
| Mar 18, 6:00 AM MDT | Winter Weather Advisory | BOU | 27 hr |
| Mar 22, 2:56 PM MDT | Fire Weather Watch | BOU | 24 hr |
| Mar 23, 2:40 PM MDT | Red Flag Warning | BOU | 27 hr |
| Mar 28, 4:55 AM MDT | Red Flag Warning | BOU | 13 hr |
| Apr 11, 2:39 PM MDT | Fire Weather Watch | BOU | 7 hr |
| Apr 11, 9:10 PM MDT | Red Flag Warning | BOU | 22 hr |
| Apr 15, 5:42 AM MDT | Winter Storm Watch | BOU | 8 hr |
| Apr 15, 1:40 PM MDT | Winter Storm Warning | BOU | 56 hr |
| Apr 25, 3:28 PM MDT | Winter Storm Watch | BOU | 14 hr |
| Apr 26, 5:18 AM MDT | Winter Storm Warning | BOU | 23 hr |
| May 1, 12:31 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 1, 3:45 PM MDT | Special Weather Statement | CYS | 45 min |
| May 5, 4:21 AM MDT | Flash Flood Watch | BOU | 13 hr |
| May 5, 8:28 AM MDT | Dense Fog Advisory | BOU | 4 hr |
| May 7, 2:39 PM MDT | Winter Storm Watch | BOU | 39 hr |
| May 8, 11:08 AM MDT | Areal Flood Advisory | BOU | 60 hr |
| May 8, 9:24 PM MDT | Areal Flood Warning | BOU | 12 hr |
| May 9, 5:10 AM MDT | Flash Flood Watch | BOU | 15 hr |
| May 9, 5:15 AM MDT | Winter Storm Warning | BOU | 25 hr |
| May 9, 8:50 AM MDT | Areal Flood Warning | BOU | 12 hr |
| May 9, 9:09 AM MDT | Winter Storm Watch | BOU | 4 hr |
| May 10, 5:26 AM MDT | Frost Advisory | BOU | 26 hr |
| May 10, 5:56 AM MDT | Winter Storm Warning | BOU | 3 hr |
| May 17, 3:02 PM MDT | Winter Storm Watch | BOU | 20 hr |
| May 18, 10:34 AM MDT | Winter Storm Warning | BOU | 31 hr |
| May 18, 5:41 PM MDT | Flash Flood Watch | BOU | 10 hr |
| May 19, 7:35 AM MDT | Areal Flood Advisory | BOU | 6 hr |
| May 19, 2:15 PM MDT | Areal Flood Advisory | BOU | 4 hr |
| May 23, 12:54 PM MDT | Tornado Watch | SPC | 6 hr |
| Jun 1, 12:02 PM MDT | River Flood Advisory | BOU | 4 days |
| Jun 3, 12:34 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jun 3, 2:03 PM MDT | Tornado Watch | SPC | 7 hr |
| Jun 3, 7:18 PM MDT | Severe Thunderstorm Warning | BOU | 15 min |
| Jun 3, 8:13 PM MDT | Severe Thunderstorm Warning | BOU | 32 min |
| Jun 4, 2:20 PM MDT | Tornado Watch | SPC | 8 hr |
| Jun 4, 5:54 PM MDT | Severe Thunderstorm Warning | BOU | 51 min |
| Jun 4, 6:11 PM MDT | Severe Thunderstorm Warning | BOU | 34 min |
| Jun 4, 6:32 PM MDT | Severe Thunderstorm Warning | BOU | 28 min |
| Jun 4, 6:38 PM MDT | Tornado Warning | BOU | 22 min |
| Jun 4, 7:03 PM MDT | Tornado Warning | BOU | 27 min |
| Jun 4, 7:15 PM MDT | Flash Flood Warning | BOU | 3 hr |
| Jun 4, 9:13 PM MDT | Areal Flood Warning | BOU | 12 hr |
| Jun 4, 9:58 PM MDT | Flash Flood Warning | BOU | 6 hr |
| Jun 5, 4:27 AM MDT | Flash Flood Watch | BOU | 18 hr |
| Jun 5, 1:09 PM MDT | Tornado Watch | SPC | 6 hr |
| Jun 10, 11:41 AM MDT | Flash Flood Watch | BOU | 39 hr |
| Jun 11, 10:35 AM MDT | River Flood Warning | BOU | 3 days |
| Jun 11, 10:35 AM MDT | River Flood Warning | BOU | 45 hr |
| Jun 11, 1:31 PM MDT | Flash Flood Warning | BOU | 4 hr |
| Jun 11, 2:24 PM MDT | Flash Flood Warning | BOU | 3 hr |
| Jun 11, 3:05 PM MDT | Flash Flood Warning | BOU | 3 hr |
| Jun 11, 3:23 PM MDT | River Flood Advisory | BOU | 5 days |
| Jun 16, 2:15 PM MDT | Special Weather Statement | CYS | 30 min |
| Jun 16, 2:44 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 16, 2:58 PM MDT | Severe Thunderstorm Warning | BOU | 36 min |
| Jun 16, 4:00 PM MDT | Severe Thunderstorm Warning | BOU | 45 min |
| Jun 16, 4:53 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Jun 24, 2:34 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jun 25, 2:30 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 25, 9:09 PM MDT | Severe Thunderstorm Warning | BOU | 36 min |
| Jun 25, 10:54 PM MDT | Areal Flood Advisory | BOU | 96 min |
| Jun 25, 10:58 PM MDT | Severe Thunderstorm Warning | BOU | 32 min |
| Jun 28, 5:16 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Jul 1, 2:15 PM MDT | Special Weather Statement | CYS | 15 min |
| Jul 1, 2:43 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 1, 3:11 PM MDT | Special Weather Statement | BOU | 34 min |
| Jul 1, 3:56 PM MDT | Special Weather Statement | BOU | 49 min |
| Jul 3, 6:19 PM MDT | Severe Thunderstorm Warning | BOU | 41 min |
| Jul 14, 1:09 PM MDT | Areal Flood Advisory | BOU | 3 hr |
| Jul 15, 5:01 PM MDT | Special Weather Statement | BOU | 44 min |
| Jul 18, 3:04 PM MDT | Special Weather Statement | BOU | 41 min |
| Jul 22, 4:37 AM MDT | Dense Fog Advisory | BOU | 4 hr |
| Aug 2, 12:26 PM MDT | Areal Flood Advisory | BOU | 2 hr |
| Aug 2, 12:49 PM MDT | Areal Flood Advisory | BOU | 86 min |
| Aug 11, 2:16 PM MDT | Areal Flood Advisory | BOU | 3 hr |
| Aug 14, 8:30 PM MDT | Areal Flood Advisory | BOU | 2 hr |
| Aug 16, 12:08 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 16, 2:40 PM MDT | Severe Thunderstorm Warning | BOU | 50 min |
| Aug 16, 3:08 PM MDT | Flash Flood Warning | BOU | 112 min |
| Aug 17, 2:32 PM MDT | Tornado Watch | SPC | 7 hr |
| Aug 17, 4:11 PM MDT | Special Weather Statement | CYS | 34 min |
| Aug 21, 2:57 AM MDT | Red Flag Warning | BOU | 18 hr |
| Aug 22, 8:17 AM MDT | Red Flag Warning | BOU | 11 hr |
| Sep 29, 1:48 PM MDT | Mesoscale Discussion | SPC | 117 min |
| Sep 29, 3:55 PM MDT | Special Weather Statement | CYS | 35 min |
| Oct 2, 2:09 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 7, 6:45 AM MDT | Dense Fog Advisory | BOU | 3 hr |
| Oct 11, 3:11 AM MDT | Red Flag Warning | BOU | 15 hr |
| Oct 20, 5:40 AM MDT | Winter Weather Advisory | BOU | 30 hr |
| Oct 22, 10:07 AM MDT | Winter Weather Advisory | BOU | 5 hr |
| Oct 22, 6:19 PM MDT | Winter Weather Advisory | BOU | 10 hr |
| Oct 23, 3:54 AM MDT | Frost Advisory | BOU | 28 hr |
| Oct 27, 3:13 AM MDT | Frost Advisory | BOU | 29 hr |
| Nov 4, 3:35 AM MST | Winter Weather Advisory | BOU | 32 hr |
| Nov 9, 3:05 PM MST | Blizzard Watch | BOU | 14 hr |
| Nov 9, 3:05 PM MST | Winter Storm Watch | BOU | 14 hr |
| Nov 10, 5:05 AM MST | Winter Storm Warning | BOU | 30 hr |
| Nov 15, 3:36 PM MST | Winter Storm Watch | BOU | 14 hr |
| Nov 16, 5:57 AM MST | Winter Storm Warning | BOU | 26 hr |
| Nov 16, 5:57 AM MST | Winter Weather Advisory | BOU | 26 hr |
| Nov 18, 3:29 AM MST | High Wind Warning | BOU | 9 hr |
| Nov 19, 3:35 AM MST | Winter Weather Advisory | BOU | 41 hr |
| Nov 25, 10:25 AM MST | Winter Weather Advisory | BOU | 42 hr |
| Nov 30, 3:38 PM MST | Winter Weather Advisory | BOU | 20 hr |
| Dec 9, 5:45 AM MST | High Wind Warning | BOU | 21 hr |
| Dec 10, 2:56 PM MST | Winter Storm Watch | BOU | 17 hr |
| Dec 11, 8:14 AM MST | Winter Weather Advisory | BOU | 31 hr |
| Dec 14, 3:45 AM MST | Winter Weather Advisory | BOU | 37 hr |
| Dec 14, 3:12 PM MST | Winter Storm Warning | BOU | 26 hr |
| Dec 17, 4:01 PM MST | High Wind Warning | BOU | 19 hr |
| Dec 21, 4:49 AM MST | High Wind Watch | BOU | 10 hr |
| Dec 21, 5:00 AM MST | Winter Storm Warning | BOU | 64 hr |
| Dec 21, 5:00 AM MST | Winter Weather Advisory | BOU | 10 hr |
| Dec 21, 2:49 PM MST | High Wind Warning | BOU | 12 hr |
| Dec 23, 3:14 AM MST | Dense Fog Advisory | BOU | 7 hr |
| Dec 23, 9:04 PM MST | Winter Weather Advisory | BOU | 6 hr |
| Dec 24, 2:59 AM MST | Winter Weather Advisory | BOU | 49 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 archive20142016
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.