Alert archive / Nebraska / Cheyenne County
Weather alerts in Cheyenne County, Nebraska, 2024
197 weather alerts in 2024, 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 2024. Tap one for its archive.
- Alerts
- 197
- Warnings
- 67
- Watches
- 33
- Advisories
- 18
- Busiest month
- June45 alerts
- Busiest day
- June 14, 202410 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 2 tornado warnings covering Cheyenne County in 2024 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 1 minutes after it went out.
Cheyenne County, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 1 | 50% | 1 | 100% | 1 min |
| Severe thunderstorm warnings | 29 | 14 | 52% | 15 | 93% | 20 min |
| Flash flood warnings | 7 | 5 | 29% | 11 | 91% | 134 min |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Cheyenne, WY: tornado warnings | 5 | 3 | 40% | 3 | 100% | 3 min |
| NWS Cheyenne, WY: severe thunderstorm warnings | 208 | 98 | 53% | 201 | 82% | 18 min |
| NWS Cheyenne, WY: flash flood warnings | 18 | 11 | 39% | 21 | 90% | 82 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, 7:03 PM MST | Freezing Fog Advisory | CYS | 17 hr |
| Jan 11, 3:19 AM MST | Wind Chill Watch | CYS | 11 hr |
| Jan 11, 3:19 AM MST | Wind Chill Warning | CYS | 5 days |
| Jan 11, 3:19 AM MST | Winter Weather Advisory | CYS | 50 hr |
| Jan 18, 12:57 AM MST | Wind Chill Advisory | CYS | 33 hr |
| Jan 23, 7:30 PM MST | Freezing Fog Advisory | CYS | 13 hr |
| Feb 2, 8:12 PM MST | Dense Fog Advisory | CYS | 13 hr |
| Feb 4, 12:05 AM MST | Dense Fog Advisory | CYS | 8 hr |
| Feb 8, 12:31 PM MST | Winter Storm Watch | CYS | 24 hr |
| Feb 9, 12:14 PM MST | Winter Weather Advisory | CYS | 35 hr |
| Feb 14, 10:46 PM MST | Dense Fog Advisory | CYS | 11 hr |
| Feb 23, 10:11 AM MST | High Wind Warning | CYS | 3 days |
| Feb 25, 1:38 AM MST | Red Flag Warning | CYS | 16 hr |
| Feb 26, 2:33 AM MST | Red Flag Warning | CYS | 15 hr |
| Mar 1, 2:17 PM MST | Red Flag Warning | CYS | 28 hr |
| Mar 3, 1:25 AM MST | Red Flag Warning | CYS | 17 hr |
| Mar 6, 1:10 PM MST | Winter Weather Advisory | CYS | 46 hr |
| Mar 9, 1:35 PM MST | Red Flag Warning | CYS | 27 hr |
| Mar 20, 1:42 PM MDT | Fire Weather Watch | CYS | 24 hr |
| Mar 23, 1:57 PM MDT | High Wind Watch | CYS | 24 hr |
| Mar 24, 2:30 AM MDT | Winter Weather Advisory | CYS | 28 hr |
| Apr 4, 2:18 PM MDT | Red Flag Warning | CYS | 29 hr |
| Apr 4, 2:30 PM MDT | High Wind Watch | CYS | 25 hr |
| Apr 5, 3:25 PM MDT | High Wind Warning | CYS | 52 hr |
| Apr 6, 1:12 PM MDT | Special Weather Statement | CYS | 33 min |
| Apr 6, 8:38 PM MDT | Blizzard Warning | CYS | 15 hr |
| Apr 14, 2:56 AM MDT | High Wind Watch | CYS | 35 hr |
| Apr 14, 2:32 PM MDT | Red Flag Warning | CYS | 30 hr |
| Apr 15, 3:31 AM MDT | High Wind Warning | CYS | 38 hr |
| Apr 29, 2:47 AM MDT | Fire Weather Watch | CYS | 23 hr |
| May 3, 2:09 PM MDT | Mesoscale Discussion | SPC | 96 min |
| May 5, 12:15 AM MDT | High Wind Warning | CYS | 4 days |
| 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, 1:22 PM MDT | Severe Thunderstorm Warning | CYS | 38 min |
| May 19, 1:51 PM MDT | Severe Thunderstorm Warning | CYS | 39 min |
| May 19, 2:31 PM MDT | Special Weather Statement | CYS | 29 min |
| May 19, 2:50 PM MDT | Mesoscale Discussion | SPC | 85 min |
| May 20, 2:47 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 20, 4:16 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 25, 2:58 PM MDT | Special Weather Statement | CYS | 32 min |
| May 25, 3:29 PM MDT | Special Weather Statement | CYS | 46 min |
| May 25, 3:41 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| 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, 3:49 PM MDT | Severe Thunderstorm Warning | CYS | 41 min |
| May 29, 4:29 PM MDT | Severe Thunderstorm Warning | CYS | 46 min |
| May 29, 4:37 PM MDT | Areal Flood Advisory | CYS | 113 min |
| May 29, 4:55 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 1, 1:08 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Jun 1, 3:51 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 1, 3:54 PM MDT | Mesoscale Discussion | SPC | 66 min |
| Jun 1, 4:04 PM MDT | Special Weather Statement | CYS | 41 min |
| Jun 1, 7:00 PM MDT | Mesoscale Discussion | SPC | 90 min |
| Jun 2, 1:16 PM MDT | Severe Thunderstorm Warning | CYS | 44 min |
| Jun 2, 1:51 PM MDT | Mesoscale Discussion | SPC | 39 min |
| Jun 2, 1:55 PM MDT | Severe Thunderstorm Warning | CYS | 35 min |
| Jun 2, 2:22 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 2, 2:26 PM MDT | Severe Thunderstorm Warning | CYS | 49 min |
| Jun 2, 2:53 PM MDT | Tornado Warning | CYS | 37 min |
| Jun 2, 3:25 PM MDT | Severe Thunderstorm Warning | CYS | 50 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 10, 12:43 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 10, 2:53 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 14, 1:11 PM MDT | Special Weather Statement | CYS | 34 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, 2:15 PM MDT | Special Weather Statement | CYS | 30 min |
| Jun 14, 2:35 PM MDT | Severe Thunderstorm Warning | CYS | 18 min |
| Jun 14, 3:12 PM MDT | Special Weather Statement | CYS | 33 min |
| Jun 14, 3:39 PM MDT | Severe Thunderstorm Warning | CYS | 51 min |
| Jun 14, 4:40 PM MDT | Flash Flood Warning | CYS | 4 hr |
| Jun 14, 4:52 PM MDT | Special Weather Statement | CYS | 23 min |
| Jun 14, 5:52 PM MDT | Flash Flood Warning | CYS | 3 hr |
| Jun 14, 6:39 PM MDT | Flash Flood Warning | CYS | 2 hr |
| Jun 14, 7:08 PM MDT | Flash Flood Warning | CYS | 94 min |
| Jun 14, 8:36 PM MDT | Areal Flood Warning | CYS | 10 hr |
| Jun 15, 12:42 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 15, 7:06 PM MDT | Special Weather Statement | CYS | 39 min |
| Jun 16, 7:38 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 16, 9:09 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 16, 10:34 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jun 20, 12:43 PM MDT | Mesoscale Discussion | SPC | 92 min |
| 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 24, 2:59 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 25, 2:29 AM MDT | Red Flag Warning | CYS | 17 hr |
| Jun 27, 2:18 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Jun 27, 2:41 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 28, 2:56 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 1, 3:38 AM MDT | Dense Fog Advisory | CYS | 4 hr |
| Jul 3, 12:02 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Jul 3, 12:17 PM MDT | Special Weather Statement | CYS | 43 min |
| Jul 3, 12:41 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 3, 1:02 PM MDT | Special Weather Statement | CYS | 43 min |
| Jul 3, 1:08 PM MDT | Severe Thunderstorm Warning | CYS | 52 min |
| Jul 3, 1:28 PM MDT | Severe Thunderstorm Warning | CYS | 47 min |
| Jul 3, 1:47 PM MDT | Tornado Warning | CYS | 28 min |
| Jul 3, 2:13 PM MDT | Severe Thunderstorm Warning | CYS | 47 min |
| Jul 3, 2:41 PM MDT | Special Weather Statement | CYS | 34 min |
| Jul 3, 3:14 PM MDT | Special Weather Statement | CYS | 31 min |
| Jul 11, 4:22 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Jul 12, 2:39 AM MDT | Heat Advisory | CYS | 71 hr |
| Jul 12, 3:44 PM MDT | Mesoscale Discussion | SPC | 91 min |
| Jul 14, 2:06 AM MDT | Red Flag Warning | CYS | 20 hr |
| Jul 14, 5:59 PM MDT | Special Weather Statement | CYS | 46 min |
| Jul 15, 2:49 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jul 15, 6:04 PM MDT | Special Weather Statement | CYS | 26 min |
| Jul 17, 12:20 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Jul 17, 1:09 PM MDT | Severe Thunderstorm Warning | CYS | 17 min |
| Jul 17, 2:49 PM MDT | Mesoscale Discussion | SPC | 116 min |
| Jul 17, 4:31 PM MDT | Special Weather Statement | CYS | 44 min |
| Jul 17, 5:01 PM MDT | Severe Thunderstorm Warning | CYS | 29 min |
| Jul 17, 5:30 PM MDT | Special Weather Statement | CYS | 45 min |
| Jul 19, 3:50 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Jul 19, 6:22 PM MDT | Severe Thunderstorm Warning | CYS | 53 min |
| Jul 19, 6:26 PM MDT | Mesoscale Discussion | SPC | 64 min |
| Jul 19, 6:36 PM MDT | Special Weather Statement | CYS | 39 min |
| Jul 19, 7:01 PM MDT | Severe Thunderstorm Warning | CYS | 44 min |
| Jul 19, 7:11 PM MDT | Special Weather Statement | CYS | 34 min |
| Jul 19, 7:17 PM MDT | Severe Thunderstorm Warning | CYS | 28 min |
| Jul 20, 1:57 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 20, 2:14 PM MDT | Severe Thunderstorm Warning | CYS | 32 min |
| Jul 21, 3:25 PM MDT | Special Weather Statement | CYS | 50 min |
| Jul 24, 1:40 AM MDT | Fire Weather Watch | CYS | 25 hr |
| Jul 24, 6:06 PM MDT | Red Flag Warning | CYS | 27 hr |
| Jul 27, 3:16 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Jul 27, 5:01 PM MDT | Special Weather Statement | CYS | 59 min |
| Jul 27, 5:26 PM MDT | Severe Thunderstorm Warning | CYS | 64 min |
| Jul 27, 5:55 PM MDT | Flash Flood Warning | CYS | 3 hr |
| Jul 27, 6:28 PM MDT | Severe Thunderstorm Warning | CYS | 62 min |
| Jul 27, 6:36 PM MDT | Special Weather Statement | CYS | 54 min |
| Jul 27, 7:44 PM MDT | Special Weather Statement | CYS | 61 min |
| Jul 27, 8:07 PM MDT | Flash Flood Warning | CYS | 114 min |
| Aug 2, 2:49 PM MDT | Mesoscale Discussion | SPC | 116 min |
| Aug 4, 1:55 AM MDT | Red Flag Warning | CYS | 18 hr |
| 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 7, 5:43 PM MDT | Severe Thunderstorm Warning | CYS | 47 min |
| Aug 11, 1:17 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Aug 12, 2:16 AM MDT | Dense Fog Advisory | CYS | 7 hr |
| Aug 13, 2:35 PM MDT | Severe Thunderstorm Warning | CYS | 25 min |
| Aug 13, 3:29 PM MDT | Severe Thunderstorm Warning | CYS | 31 min |
| Aug 13, 4:31 PM MDT | Mesoscale Discussion | SPC | 59 min |
| Aug 13, 4:47 PM MDT | Severe Thunderstorm Warning | CYS | 32 min |
| Aug 13, 4:52 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 13, 5:26 PM MDT | Special Weather Statement | CYS | 34 min |
| Aug 13, 5:57 PM MDT | Special Weather Statement | CYS | 48 min |
| Aug 13, 6:43 PM MDT | Special Weather Statement | CYS | 47 min |
| Aug 13, 6:45 PM MDT | Areal Flood Advisory | CYS | 2 hr |
| Aug 14, 7:43 PM MDT | Special Weather Statement | CYS | 47 min |
| 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, 5:00 PM MDT | Special Weather Statement | CYS | 45 min |
| Aug 21, 1:55 PM MDT | Mesoscale Discussion | SPC | 65 min |
| Aug 21, 4:22 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Aug 21, 6:44 PM MDT | Severe Thunderstorm Warning | CYS | 46 min |
| Aug 21, 7:22 PM MDT | Flash Flood Warning | CYS | 113 min |
| Aug 21, 8:14 PM MDT | Severe Thunderstorm Warning | CYS | 61 min |
| Aug 23, 4:53 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Aug 23, 5:19 PM MDT | Severe Thunderstorm Warning | CYS | 41 min |
| Aug 23, 5:42 PM MDT | Special Weather Statement | CYS | 63 min |
| Aug 23, 5:54 PM MDT | Severe Thunderstorm Warning | CYS | 51 min |
| Aug 23, 6:43 PM MDT | Special Weather Statement | CYS | 47 min |
| Aug 26, 11:44 PM MDT | Special Weather Statement | CYS | 31 min |
| Aug 27, 12:46 PM MDT | Red Flag Warning | CYS | 31 hr |
| Aug 31, 1:20 PM MDT | Fire Weather Watch | CYS | 24 hr |
| Sep 1, 1:49 PM MDT | Fire Weather Watch | CYS | 13 hr |
| Sep 1, 1:49 PM MDT | Red Flag Warning | CYS | 30 hr |
| Sep 2, 2:29 AM MDT | Red Flag Warning | CYS | 42 hr |
| Sep 7, 7:37 PM MDT | Special Weather Statement | CYS | 38 min |
| Sep 7, 8:16 PM MDT | Special Weather Statement | CYS | 59 min |
| Sep 11, 3:03 AM MDT | Fire Weather Watch | CYS | 10 hr |
| Sep 11, 1:14 PM MDT | Red Flag Warning | CYS | 31 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, 5:59 PM MDT | Special Weather Statement | CYS | 31 min |
| Sep 27, 1:10 PM MDT | Fire Weather Watch | CYS | 12 hr |
| Sep 28, 1:34 AM MDT | Fire Weather Watch | CYS | 42 hr |
| Sep 28, 1:34 AM MDT | Red Flag Warning | CYS | 65 hr |
| Sep 29, 7:33 PM MDT | Red Flag Warning | CYS | 23 hr |
| Oct 1, 1:49 AM MDT | Red Flag Warning | CYS | 42 hr |
| Oct 3, 1:18 PM MDT | Frost Advisory | CYS | 18 hr |
| Oct 3, 1:35 PM MDT | Fire Weather Watch | CYS | 23 hr |
| Oct 3, 1:35 PM MDT | Red Flag Warning | CYS | 53 hr |
| Oct 15, 1:54 AM MDT | Fire Weather Watch | CYS | 12 hr |
| Oct 15, 1:31 PM MDT | Red Flag Warning | CYS | 29 hr |
| Oct 26, 6:30 PM MDT | Red Flag Warning | CYS | 24 hr |
| Nov 3, 5:06 AM MST | Dense Fog Advisory | CYS | 3 hr |
| Nov 11, 10:33 PM MST | Dense Fog Advisory | CYS | 10 hr |
| Dec 27, 1:11 AM MST | High Wind Warning | CYS | 4 days |
| Dec 29, 1:48 AM MST | High Wind Watch | CYS | 11 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 | 29 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 17 |
| Mesoscale Discussion | 44 |
| Special Weather Statement | 35 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 7 |
| Areal Flood Advisory | 2 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 4 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Wind Chill Warning | 1 |
| Wind Chill Watch | 1 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 5 |
| High Wind Watch | 4 |
| Fire | |
| Red Flag Warning | 21 |
| Fire Weather Watch | 10 |
| Fog and smoke | |
| Dense Fog Advisory | 7 |
| Freezing Fog Advisory | 2 |
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.