Alert archive / Colorado / Logan County
Weather alerts in Logan County, Colorado, 2024
175 weather alerts in 2024, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Logan County and its neighbors
Each county as a circle sized by its count in 2024. Tap one for its archive.
- Alerts
- 175
- Warnings
- 64
- Watches
- 28
- Advisories
- 18
- Busiest month
- June43 alerts
- Busiest day
- June 1, 202411 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
2 of 2 tornado warnings covering Logan County in 2024 had a tornado report inside them; 3 of 3 tornado reports fell inside a warning, on average 11 minutes after it went out.
Logan County, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 2 | 0% | 3 | 100% | 11 min |
| Severe thunderstorm warnings | 42 | 15 | 64% | 28 | 64% | 17 min |
| Flash flood warnings | 1 | 1 | 0% | 2 | 100% | 5 min |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Denver/Boulder, CO: tornado warnings | 27 | 2 | 93% | 15 | 20% | 11 min |
| NWS Denver/Boulder, CO: severe thunderstorm warnings | 295 | 119 | 60% | 339 | 79% | 20 min |
| NWS Denver/Boulder, CO: flash flood warnings | 32 | 9 | 72% | 14 | 79% | 40 min |
An office's figures cover every county it serves, including across state lines.
Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.
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, 2:25 PM MST | Dense Fog Advisory | BOU | 19 hr |
| Jan 11, 3:10 AM MST | Wind Chill Watch | BOU | 23 hr |
| Jan 12, 2:10 AM MST | Wind Chill Warning | BOU | 4 days |
| Jan 23, 1:25 PM MST | Dense Fog Advisory | BOU | 20 hr |
| Feb 2, 7:55 PM MST | Dense Fog Advisory | BOU | 12 hr |
| Feb 3, 5:53 PM MST | Dense Fog Advisory | BOU | 16 hr |
| Feb 9, 12:47 PM MST | Winter Weather Advisory | BOU | 40 hr |
| Feb 24, 1:49 AM MST | Red Flag Warning | BOU | 16 hr |
| Feb 24, 1:43 PM MST | Red Flag Warning | BOU | 34 hr |
| Feb 25, 1:32 PM MST | Red Flag Warning | BOU | 28 hr |
| Feb 27, 8:02 AM MST | Snow Squall Warning | BOU | 43 min |
| Mar 1, 6:46 AM MST | Red Flag Warning | BOU | 36 hr |
| Mar 3, 4:19 AM MST | Red Flag Warning | BOU | 14 hr |
| Mar 7, 1:50 AM MST | Winter Storm Warning | BOU | 15 hr |
| Mar 7, 1:50 AM MST | Winter Weather Advisory | BOU | 39 hr |
| Mar 7, 9:42 AM MST | Mesoscale Discussion | SPC | 4 hr |
| Mar 23, 3:22 AM MDT | Winter Weather Advisory | BOU | 57 hr |
| Mar 23, 2:55 PM MDT | High Wind Watch | BOU | 23 hr |
| Mar 24, 3:53 AM MDT | Winter Storm Watch | BOU | 10 hr |
| Apr 2, 2:33 PM MDT | Fire Weather Watch | BOU | 47 hr |
| Apr 4, 4:25 AM MDT | Red Flag Warning | BOU | 41 hr |
| Apr 4, 2:58 PM MDT | High Wind Watch | BOU | 36 hr |
| Apr 5, 11:50 AM MDT | High Wind Warning | BOU | 54 hr |
| Apr 6, 12:02 PM MDT | Special Weather Statement | BOU | 28 min |
| Apr 14, 3:30 AM MDT | Fire Weather Watch | BOU | 11 hr |
| Apr 14, 2:13 PM MDT | Red Flag Warning | BOU | 30 hr |
| Apr 15, 3:15 AM MDT | High Wind Watch | BOU | 11 hr |
| Apr 15, 2:18 PM MDT | High Wind Warning | BOU | 28 hr |
| Apr 25, 1:53 PM MDT | Tornado Watch | SPC | 7 hr |
| Apr 25, 4:16 PM MDT | Severe Thunderstorm Warning | BOU | 29 min |
| Apr 28, 4:32 PM MDT | Special Weather Statement | BOU | 28 min |
| May 3, 2:09 PM MDT | Mesoscale Discussion | SPC | 96 min |
| May 6, 1:24 PM MDT | Freeze Watch | BOU | 23 hr |
| May 13, 6:13 PM MDT | Special Weather Statement | BOU | 32 min |
| May 19, 12:09 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 19, 12:57 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 19, 2:18 PM MDT | Severe Thunderstorm Warning | BOU | 42 min |
| May 19, 2:45 PM MDT | Tornado Warning | BOU | 19 min |
| May 19, 2:50 PM MDT | Mesoscale Discussion | SPC | 85 min |
| May 19, 3:10 PM MDT | Tornado Warning | BOU | 35 min |
| May 19, 3:41 PM MDT | Severe Thunderstorm Warning | BOU | 35 min |
| May 20, 2:47 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 20, 4:07 PM MDT | Tornado Watch | SPC | 7 hr |
| May 25, 3:41 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 25, 3:57 PM MDT | Special Weather Statement | BOU | 48 min |
| May 28, 9:05 PM MDT | Special Weather Statement | BOU | 25 min |
| May 29, 2:27 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 29, 2:57 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 29, 4:55 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 1, 1:08 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Jun 1, 2:00 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 1, 3:54 PM MDT | Mesoscale Discussion | SPC | 66 min |
| Jun 1, 4:16 PM MDT | Special Weather Statement | BOU | 44 min |
| Jun 1, 4:26 PM MDT | Special Weather Statement | BOU | 49 min |
| Jun 1, 4:29 PM MDT | Special Weather Statement | BOU | 46 min |
| Jun 1, 4:49 PM MDT | Severe Thunderstorm Warning | BOU | 41 min |
| Jun 1, 5:18 PM MDT | Severe Thunderstorm Warning | BOU | 42 min |
| Jun 1, 5:43 PM MDT | Severe Thunderstorm Warning | BOU | 47 min |
| Jun 1, 5:54 PM MDT | Areal Flood Advisory | BOU | 3 hr |
| Jun 1, 5:59 PM MDT | Severe Thunderstorm Warning | BOU | 46 min |
| Jun 1, 6:13 PM MDT | Flash Flood Warning | BOU | 3 hr |
| Jun 1, 6:17 PM MDT | Severe Thunderstorm Warning | BOU | 43 min |
| Jun 2, 1:51 PM MDT | Mesoscale Discussion | SPC | 39 min |
| Jun 2, 2:22 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 2, 2:57 PM MDT | Severe Thunderstorm Warning | BOU | 48 min |
| Jun 2, 3:43 PM MDT | Severe Thunderstorm Warning | BOU | 47 min |
| Jun 2, 3:49 PM MDT | Severe Thunderstorm Warning | BOU | 26 min |
| Jun 2, 4:00 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 8, 11:51 AM MDT | Mesoscale Discussion | SPC | 114 min |
| Jun 8, 12:26 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 8, 3:24 PM MDT | Severe Thunderstorm Warning | BOU | 36 min |
| Jun 10, 5:01 PM MDT | Severe Thunderstorm Warning | BOU | 44 min |
| Jun 10, 6:18 PM MDT | Special Weather Statement | BOU | 42 min |
| Jun 14, 1:44 PM MDT | Mesoscale Discussion | SPC | 61 min |
| Jun 14, 2:10 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 14, 5:32 PM MDT | Severe Thunderstorm Warning | BOU | 31 min |
| Jun 14, 8:47 PM MDT | Special Weather Statement | BOU | 43 min |
| Jun 15, 12:42 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 15, 8:37 PM MDT | Severe Thunderstorm Warning | BOU | 38 min |
| Jun 16, 7:38 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 20, 1:23 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 20, 4:15 PM MDT | Mesoscale Discussion | SPC | 90 min |
| Jun 21, 1:27 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 21, 4:40 PM MDT | Mesoscale Discussion | SPC | 95 min |
| Jun 21, 4:57 PM MDT | Severe Thunderstorm Warning | BOU | 21 min |
| Jun 24, 1:38 PM MDT | Special Weather Statement | BOU | 52 min |
| Jun 24, 2:22 PM MDT | Special Weather Statement | BOU | 38 min |
| Jun 24, 2:59 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 27, 2:41 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 28, 2:56 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 6:14 PM MDT | Special Weather Statement | BOU | 46 min |
| Jun 28, 11:18 PM MDT | Special Weather Statement | BOU | 87 min |
| Jul 3, 12:02 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Jul 3, 12:41 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 3, 1:29 PM MDT | Special Weather Statement | BOU | 46 min |
| Jul 3, 1:51 PM MDT | Severe Thunderstorm Warning | BOU | 39 min |
| Jul 3, 2:53 PM MDT | Severe Thunderstorm Warning | BOU | 52 min |
| Jul 3, 3:51 PM MDT | Severe Thunderstorm Warning | BOU | 39 min |
| Jul 3, 4:27 PM MDT | Severe Thunderstorm Warning | BOU | 48 min |
| Jul 10, 12:24 PM MDT | Heat Advisory | BOU | 3 days |
| Jul 10, 12:24 PM MDT | Heat Advisory | BOU | 4 days |
| Jul 11, 4:22 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Jul 11, 7:14 PM MDT | Special Weather Statement | BOU | 31 min |
| Jul 11, 7:46 PM MDT | Special Weather Statement | BOU | 29 min |
| Jul 12, 3:44 PM MDT | Mesoscale Discussion | SPC | 91 min |
| Jul 14, 5:25 PM MDT | Special Weather Statement | BOU | 50 min |
| Jul 15, 2:49 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jul 17, 12:20 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Jul 17, 2:03 PM MDT | Special Weather Statement | BOU | 27 min |
| Jul 17, 2:49 PM MDT | Mesoscale Discussion | SPC | 116 min |
| Jul 17, 3:27 PM MDT | Special Weather Statement | BOU | 48 min |
| Jul 17, 3:35 PM MDT | Severe Thunderstorm Warning | BOU | 40 min |
| Jul 17, 4:49 PM MDT | Severe Thunderstorm Warning | BOU | 41 min |
| Jul 19, 8:14 PM MDT | Special Weather Statement | BOU | 31 min |
| Jul 20, 1:57 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 20, 3:56 PM MDT | Severe Thunderstorm Warning | BOU | 34 min |
| Jul 27, 3:16 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Jul 27, 6:13 PM MDT | Severe Thunderstorm Warning | BOU | 47 min |
| Jul 27, 6:57 PM MDT | Severe Thunderstorm Warning | BOU | 48 min |
| Aug 2, 2:49 PM MDT | Mesoscale Discussion | SPC | 116 min |
| Aug 2, 5:26 PM MDT | Special Weather Statement | BOU | 49 min |
| Aug 2, 6:13 PM MDT | Special Weather Statement | BOU | 47 min |
| Aug 2, 6:27 PM MDT | Severe Thunderstorm Warning | BOU | 48 min |
| Aug 7, 12:57 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 7, 2:18 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 7, 5:30 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 11, 1:17 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Aug 11, 2:21 PM MDT | Special Weather Statement | BOU | 39 min |
| Aug 11, 2:41 PM MDT | Severe Thunderstorm Warning | BOU | 49 min |
| Aug 11, 2:41 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 11, 3:23 PM MDT | Severe Thunderstorm Warning | BOU | 21 min |
| Aug 12, 1:20 AM MDT | Dense Fog Advisory | BOU | 8 hr |
| Aug 13, 4:31 PM MDT | Mesoscale Discussion | SPC | 59 min |
| Aug 13, 4:52 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 13, 6:15 PM MDT | Severe Thunderstorm Warning | BOU | 45 min |
| Aug 13, 6:46 PM MDT | Areal Flood Advisory | BOU | 3 hr |
| Aug 13, 6:59 PM MDT | Severe Thunderstorm Warning | BOU | 46 min |
| Aug 14, 12:45 PM MDT | Areal Flood Warning | BOU | 20 hr |
| Aug 19, 1:19 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Aug 19, 1:43 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 19, 4:24 PM MDT | Severe Thunderstorm Warning | BOU | 51 min |
| Aug 19, 5:10 PM MDT | Severe Thunderstorm Warning | BOU | 35 min |
| Aug 19, 5:32 PM MDT | Areal Flood Advisory | BOU | 118 min |
| Aug 19, 5:58 PM MDT | Severe Thunderstorm Warning | BOU | 32 min |
| Aug 19, 6:07 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Aug 19, 6:18 PM MDT | Severe Thunderstorm Warning | BOU | 42 min |
| Aug 19, 7:25 PM MDT | Areal Flood Advisory | BOU | 3 hr |
| Aug 21, 7:46 PM MDT | Severe Thunderstorm Warning | BOU | 44 min |
| Aug 21, 8:11 PM MDT | Severe Thunderstorm Warning | BOU | 32 min |
| Aug 21, 8:47 PM MDT | Special Weather Statement | BOU | 43 min |
| Aug 21, 9:20 PM MDT | Special Weather Statement | BOU | 40 min |
| Aug 21, 9:36 PM MDT | Severe Thunderstorm Warning | BOU | 24 min |
| Aug 22, 8:29 PM MDT | Severe Thunderstorm Warning | BOU | 22 min |
| Aug 22, 9:09 PM MDT | Areal Flood Advisory | BOU | 3 hr |
| Aug 23, 4:53 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Aug 23, 5:18 PM MDT | Severe Thunderstorm Warning | BOU | 42 min |
| Aug 23, 5:54 PM MDT | Severe Thunderstorm Warning | BOU | 51 min |
| Aug 23, 6:22 PM MDT | Severe Thunderstorm Warning | BOU | 38 min |
| Aug 23, 6:38 PM MDT | Special Weather Statement | BOU | 52 min |
| Sep 10, 2:01 PM MDT | Fire Weather Watch | BOU | 24 hr |
| Sep 11, 2:14 PM MDT | Red Flag Warning | BOU | 30 hr |
| Sep 15, 4:00 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 17, 2:54 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 17, 4:39 PM MDT | Severe Thunderstorm Warning | BOU | 36 min |
| Sep 17, 5:09 PM MDT | Special Weather Statement | BOU | 51 min |
| Oct 1, 2:33 PM MDT | Red Flag Warning | BOU | 28 hr |
| Oct 3, 12:38 PM MDT | Frost Advisory | BOU | 19 hr |
| Oct 3, 2:18 PM MDT | Fire Weather Watch | BOU | 23 hr |
| Oct 4, 1:27 PM MDT | Red Flag Warning | BOU | 30 hr |
| Oct 16, 1:36 PM MDT | Red Flag Warning | BOU | 28 hr |
| Oct 24, 2:56 AM MDT | Frost Advisory | BOU | 30 hr |
| Oct 24, 3:04 AM MDT | Red Flag Warning | BOU | 15 hr |
| Nov 5, 3:38 AM MST | Winter Weather Advisory | BOU | 61 hr |
| Dec 28, 2:12 PM MST | High Wind Watch | BOU | 24 hr |
| Dec 29, 2:17 PM MST | High Wind Warning | 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 | 42 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 15 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 37 |
| Special Weather Statement | 28 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 1 |
| Areal Flood Advisory | 5 |
| Winter | |
| Snow Squall Warning | 1 |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 4 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Wind Chill Warning | 1 |
| Freeze Watch | 1 |
| Wind Chill Watch | 1 |
| Frost Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 3 |
| High Wind Watch | 4 |
| Fire | |
| Red Flag Warning | 12 |
| Fire Weather Watch | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20232025
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. Warning verification from the Mesonet's Cow. Rebuilt daily.