Alert archive / Colorado / Cheyenne County
Weather alerts in Cheyenne County, Colorado, 2010
179 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Cheyenne County and its neighbors
Each county as a circle sized by its count in 2010. Tap one for its archive.
- Alerts
- 179
- Warnings
- 78
- Watches
- 28
- Advisories
- 39
- Busiest month
- May38 alerts
- Busiest day
- April 22, 201014 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
7 of 17 tornado warnings covering Cheyenne County in 2010 had a tornado report inside them; 8 of 8 tornado reports fell inside a warning, on average 17 minutes after it went out.
Cheyenne County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 17 | 7 | 59% | 8 | 100% | 17 min |
| Severe thunderstorm warnings | 37 | 14 | 62% | 16 | 63% | 17 min |
| Flash flood warnings | 3 | 2 | 33% | 1 | 100% | 41 min |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Goodland, KS: tornado warnings | 87 | 30 | 66% | 45 | 84% | 26 min |
| NWS Goodland, KS: severe thunderstorm warnings | 307 | 126 | 59% | 315 | 75% | 26 min |
| NWS Goodland, KS: flash flood warnings | 34 | 13 | 62% | 27 | 67% | 99 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 5, 1:56 PM MST | Wind Chill Advisory | GLD | 51 hr |
| Jan 7, 2:03 AM MST | Wind Chill Advisory | GLD | 31 hr |
| Jan 20, 9:12 PM MST | Dense Fog Advisory | GLD | 14 hr |
| Jan 21, 7:35 PM MST | Dense Fog Advisory | GLD | 15 hr |
| Feb 14, 3:00 AM MST | Wind Advisory | GLD | 14 hr |
| Feb 19, 2:57 PM MST | Winter Storm Watch | GLD | 11 hr |
| Feb 20, 1:44 AM MST | Winter Weather Advisory | GLD | 38 hr |
| Mar 11, 2:45 AM MST | Wind Advisory | GLD | 14 hr |
| Mar 12, 3:26 AM MST | Wind Advisory | GLD | 11 hr |
| Mar 14, 12:44 AM MST | Dense Fog Advisory | GLD | 8 hr |
| Mar 18, 2:07 PM MDT | Winter Weather Advisory | GLD | 24 hr |
| Mar 23, 3:03 AM MDT | Winter Weather Advisory | GLD | 32 hr |
| Mar 25, 2:02 AM MDT | Winter Storm Watch | GLD | 25 hr |
| Mar 26, 3:14 AM MDT | Winter Weather Advisory | GLD | 18 hr |
| Mar 26, 3:26 AM MDT | Wind Advisory | GLD | 38 hr |
| Mar 29, 12:46 PM MDT | Red Flag Warning | GLD | 31 hr |
| Mar 31, 3:09 PM MDT | Fire Weather Watch | GLD | 12 hr |
| Apr 1, 3:10 AM MDT | Wind Advisory | GLD | 17 hr |
| Apr 1, 3:20 AM MDT | Red Flag Warning | GLD | 17 hr |
| Apr 1, 2:39 PM MDT | High Wind Warning | GLD | 5 hr |
| Apr 3, 3:06 AM MDT | Fire Weather Watch | GLD | 48 hr |
| Apr 3, 3:06 AM MDT | Red Flag Warning | GLD | 16 hr |
| Apr 4, 3:23 AM MDT | High Wind Watch | GLD | 24 hr |
| Apr 4, 12:20 PM MDT | Red Flag Warning | GLD | 32 hr |
| Apr 5, 3:09 AM MDT | Wind Advisory | GLD | 15 hr |
| Apr 6, 4:03 AM MDT | Wind Advisory | GLD | 13 hr |
| Apr 7, 10:10 AM MDT | Wind Advisory | GLD | 7 hr |
| Apr 12, 1:40 PM MDT | Wind Advisory | GLD | 31 hr |
| Apr 13, 3:15 AM MDT | High Wind Warning | GLD | 17 hr |
| Apr 13, 5:12 PM MDT | Mesoscale Discussion | SPC | 93 min |
| Apr 13, 6:45 PM MDT | Severe Thunderstorm Warning | GLD | 60 min |
| Apr 13, 6:46 PM MDT | Severe Thunderstorm Warning | GLD | 59 min |
| Apr 13, 8:34 PM MDT | Severe Thunderstorm Warning | GLD | 21 min |
| Apr 22, 1:02 AM MDT | Severe Thunderstorm Warning | GLD | 43 min |
| Apr 22, 1:41 AM MDT | Severe Thunderstorm Warning | GLD | 64 min |
| Apr 22, 11:52 AM MDT | Mesoscale Discussion | SPC | 53 min |
| Apr 22, 12:30 PM MDT | Tornado Watch | SPC | 8 hr |
| Apr 22, 2:21 PM MDT | Mesoscale Discussion | SPC | 54 min |
| Apr 22, 3:56 PM MDT | Severe Thunderstorm Warning | GLD | 49 min |
| Apr 22, 4:10 PM MDT | Tornado Warning | GLD | 35 min |
| Apr 22, 4:11 PM MDT | Tornado Warning | GLD | 34 min |
| Apr 22, 4:39 PM MDT | Tornado Warning | GLD | 18 min |
| Apr 22, 4:43 PM MDT | Tornado Warning | GLD | 32 min |
| Apr 22, 5:08 PM MDT | Tornado Warning | GLD | 37 min |
| Apr 22, 5:31 PM MDT | Flash Flood Warning | GLD | 3 hr |
| Apr 22, 5:42 PM MDT | Tornado Warning | GLD | 33 min |
| Apr 22, 5:51 PM MDT | Mesoscale Discussion | SPC | 54 min |
| Apr 22, 6:16 PM MDT | Tornado Warning | GLD | 10 min |
| Apr 22, 6:48 PM MDT | Tornado Watch | SPC | 5 hr |
| Apr 23, 2:38 PM MDT | Wind Advisory | GLD | 28 hr |
| Apr 26, 2:07 PM MDT | Frost Advisory | GLD | 18 hr |
| Apr 29, 2:35 PM MDT | Frost Advisory | GLD | 16 hr |
| Apr 30, 1:13 PM MDT | Frost Advisory | GLD | 18 hr |
| May 6, 2:54 PM MDT | Frost Advisory | GLD | 15 hr |
| May 6, 2:54 PM MDT | Freeze Watch | GLD | 23 hr |
| May 7, 2:00 PM MDT | Freeze Warning | GLD | 14 hr |
| May 10, 1:08 PM MDT | Tornado Warning | GLD | 52 min |
| May 10, 2:05 PM MDT | Tornado Warning | GLD | 28 min |
| May 10, 6:00 PM MDT | Severe Thunderstorm Warning | GLD | 60 min |
| May 12, 1:54 PM MDT | Frost Advisory | GLD | 19 hr |
| May 17, 1:50 AM MDT | Dense Fog Advisory | GLD | 7 hr |
| May 18, 11:42 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 18, 12:41 PM MDT | Tornado Watch | SPC | 10 hr |
| May 18, 6:44 PM MDT | Tornado Warning | GLD | 39 min |
| May 18, 6:50 PM MDT | Mesoscale Discussion | SPC | 55 min |
| May 18, 6:58 PM MDT | Tornado Warning | GLD | 12 min |
| May 18, 7:07 PM MDT | Tornado Warning | GLD | 38 min |
| May 18, 7:20 PM MDT | Tornado Warning | GLD | 55 min |
| May 18, 7:53 PM MDT | Tornado Warning | GLD | 25 min |
| May 18, 8:26 PM MDT | Severe Thunderstorm Warning | GLD | 54 min |
| May 19, 9:13 AM MDT | Areal Flood Warning | GLD | 6 hr |
| May 22, 4:00 AM MDT | Wind Advisory | GLD | 16 hr |
| May 23, 2:22 PM MDT | Wind Advisory | GLD | 29 hr |
| May 23, 3:53 PM MDT | Tornado Watch | SPC | 7 hr |
| May 23, 7:03 PM MDT | Severe Thunderstorm Warning | GLD | 19 min |
| May 23, 7:12 PM MDT | Mesoscale Discussion | SPC | 93 min |
| May 23, 8:45 PM MDT | Severe Thunderstorm Warning | GLD | 14 min |
| May 23, 9:17 PM MDT | Severe Thunderstorm Warning | GLD | 12 min |
| May 23, 10:54 PM MDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 24, 3:56 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 24, 9:44 AM MDT | Mesoscale Discussion | SPC | 91 min |
| May 24, 10:28 AM MDT | High Wind Warning | GLD | 7 hr |
| May 24, 10:46 AM MDT | Tornado Watch | SPC | 10 hr |
| May 24, 11:29 AM MDT | Severe Thunderstorm Warning | GLD | 46 min |
| May 25, 2:01 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 25, 3:15 PM MDT | Severe Thunderstorm Warning | GLD | 60 min |
| May 25, 4:01 PM MDT | Tornado Warning | GLD | 59 min |
| May 25, 4:46 PM MDT | Tornado Warning | GLD | 59 min |
| May 25, 5:11 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 25, 6:41 PM MDT | Severe Thunderstorm Warning | GLD | 32 min |
| May 26, 1:26 PM MDT | Mesoscale Discussion | SPC | 64 min |
| Jun 6, 12:59 AM MDT | Severe Thunderstorm Warning | GLD | 31 min |
| Jun 6, 8:53 PM MDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 6, 10:21 PM MDT | Severe Thunderstorm Warning | GLD | 54 min |
| Jun 7, 4:17 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Jun 7, 6:14 PM MDT | Severe Thunderstorm Warning | GLD | 46 min |
| Jun 7, 6:59 PM MDT | Severe Thunderstorm Warning | GLD | 34 min |
| Jun 9, 2:39 PM MDT | Tornado Watch | SPC | 6 hr |
| Jun 10, 2:25 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 10, 4:29 PM MDT | Mesoscale Discussion | SPC | 61 min |
| Jun 10, 4:44 PM MDT | Tornado Watch | SPC | 6 hr |
| Jun 10, 8:17 PM MDT | Mesoscale Discussion | SPC | 58 min |
| Jun 11, 5:35 PM MDT | Mesoscale Discussion | SPC | 55 min |
| Jun 11, 6:34 PM MDT | Tornado Watch | SPC | 5 hr |
| Jun 11, 8:51 PM MDT | Severe Thunderstorm Warning | GLD | 54 min |
| Jun 11, 9:34 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jun 12, 7:29 PM MDT | Severe Thunderstorm Warning | GLD | 61 min |
| Jun 12, 8:50 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 16, 6:44 PM MDT | Severe Thunderstorm Warning | GLD | 31 min |
| Jun 20, 2:07 PM MDT | Tornado Watch | SPC | 8 hr |
| Jun 20, 5:08 PM MDT | Severe Thunderstorm Warning | GLD | 26 min |
| Jul 2, 3:40 AM MDT | Wind Advisory | GLD | 17 hr |
| Jul 2, 12:19 PM MDT | Mesoscale Discussion | SPC | 56 min |
| Jul 4, 6:08 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Jul 4, 9:18 PM MDT | Severe Thunderstorm Warning | GLD | 57 min |
| Jul 4, 10:10 PM MDT | Severe Thunderstorm Warning | GLD | 65 min |
| Jul 4, 10:18 PM MDT | Flash Flood Warning | GLD | 6 hr |
| Jul 4, 10:44 PM MDT | Severe Thunderstorm Warning | GLD | 61 min |
| Jul 5, 12:24 AM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 9, 2:22 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Jul 10, 12:34 PM MDT | Mesoscale Discussion | SPC | 116 min |
| Jul 10, 12:55 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 10, 3:20 PM MDT | Special Weather Statement | GLD | 25 min |
| Jul 10, 4:17 PM MDT | Mesoscale Discussion | SPC | 58 min |
| Jul 15, 2:20 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 15, 5:09 PM MDT | Severe Thunderstorm Warning | GLD | 66 min |
| Jul 15, 5:41 PM MDT | Severe Thunderstorm Warning | GLD | 64 min |
| Jul 15, 6:12 PM MDT | Mesoscale Discussion | SPC | 93 min |
| Jul 15, 6:13 PM MDT | Tornado Warning | GLD | 47 min |
| Jul 15, 6:35 PM MDT | Special Weather Statement | GLD | 40 min |
| Jul 15, 7:01 PM MDT | Severe Thunderstorm Warning | GLD | 26 min |
| Jul 16, 2:25 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 20, 8:16 PM MDT | Special Weather Statement | GLD | 59 min |
| Jul 21, 4:04 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 22, 3:31 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Jul 30, 2:58 PM MDT | Mesoscale Discussion | SPC | 62 min |
| Jul 30, 5:28 PM MDT | Severe Thunderstorm Warning | GLD | 12 min |
| Jul 31, 2:24 PM MDT | Flash Flood Warning | GLD | 2 hr |
| Jul 31, 2:48 PM MDT | Severe Thunderstorm Warning | GLD | 20 min |
| Jul 31, 2:52 PM MDT | Severe Thunderstorm Warning | GLD | 16 min |
| Aug 2, 10:32 PM MDT | Areal Flood Warning | GLD | 9 hr |
| Aug 7, 5:22 PM MDT | Severe Thunderstorm Warning | GLD | 53 min |
| Aug 9, 4:42 PM MDT | Severe Thunderstorm Warning | GLD | 46 min |
| Aug 9, 5:26 PM MDT | Special Weather Statement | GLD | 34 min |
| Aug 9, 5:26 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 9, 5:28 PM MDT | Severe Thunderstorm Warning | GLD | 38 min |
| Aug 9, 6:03 PM MDT | Severe Thunderstorm Warning | GLD | 29 min |
| Aug 9, 7:02 PM MDT | Severe Thunderstorm Warning | GLD | 33 min |
| Aug 9, 7:13 PM MDT | Severe Thunderstorm Warning | GLD | 52 min |
| Aug 12, 4:35 PM MDT | Special Weather Statement | GLD | 55 min |
| Aug 12, 5:06 PM MDT | Special Weather Statement | GLD | 54 min |
| Aug 16, 1:08 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 16, 2:34 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 6, 4:12 AM MDT | Wind Advisory | GLD | 13 hr |
| Sep 20, 12:31 PM MDT | Red Flag Warning | GLD | 5 hr |
| Sep 27, 4:17 AM MDT | Red Flag Warning | GLD | 14 hr |
| Sep 29, 6:02 AM MDT | Red Flag Warning | GLD | 12 hr |
| Oct 12, 3:49 AM MDT | Frost Advisory | GLD | 29 hr |
| Oct 25, 3:50 AM MDT | Frost Advisory | GLD | 11 hr |
| Oct 25, 10:14 AM MDT | Wind Advisory | GLD | 8 hr |
| Oct 25, 3:08 PM MDT | Freeze Warning | GLD | 17 hr |
| Oct 26, 11:27 AM MDT | Red Flag Warning | GLD | 7 hr |
| Oct 26, 3:05 PM MDT | Fire Weather Watch | GLD | 13 hr |
| Oct 26, 7:54 PM MDT | Freeze Warning | GLD | 12 hr |
| Oct 27, 3:46 AM MDT | Red Flag Warning | GLD | 14 hr |
| Nov 6, 12:18 PM MDT | Fire Weather Watch | GLD | 10 hr |
| Nov 6, 9:52 PM MDT | Red Flag Warning | GLD | 20 hr |
| Nov 16, 3:01 AM MST | Wind Advisory | GLD | 31 hr |
| Nov 20, 7:39 AM MST | Dense Fog Advisory | GLD | 3 hr |
| Nov 21, 6:45 PM MST | Dense Fog Advisory | GLD | 10 hr |
| Nov 22, 2:10 PM MST | Fire Weather Watch | GLD | 24 hr |
| Nov 23, 1:41 PM MST | Red Flag Warning | GLD | 3 hr |
| Nov 27, 2:40 AM MST | Red Flag Warning | GLD | 14 hr |
| Nov 27, 12:42 PM MST | Fire Weather Watch | GLD | 15 hr |
| Nov 28, 3:27 AM MST | Red Flag Warning | GLD | 14 hr |
| Nov 28, 3:00 PM MST | Wind Advisory | GLD | 26 hr |
| Dec 9, 11:40 AM MST | Wind Advisory | GLD | 2 hr |
| Dec 11, 3:27 AM MST | Wind Advisory | GLD | 13 hr |
| Dec 30, 3:00 AM MST | Winter Weather Advisory | GLD | 38 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 | 37 |
| Tornado Warning | 17 |
| Severe Thunderstorm Watch | 9 |
| Tornado Watch | 9 |
| Mesoscale Discussion | 28 |
| Special Weather Statement | 6 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 3 |
| Winter | |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 5 |
| Cold | |
| Freeze Warning | 3 |
| Freeze Watch | 1 |
| Frost Advisory | 7 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 3 |
| High Wind Watch | 1 |
| Wind Advisory | 19 |
| Fire | |
| Red Flag Warning | 13 |
| Fire Weather Watch | 6 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20092011
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.