Alert archive / Wyoming / Laramie County
Weather alerts in Laramie County, Wyoming, 2020
326 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Laramie County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 326
- Warnings
- 111
- Watches
- 50
- Advisories
- 42
- Busiest month
- July59 alerts
- Busiest day
- July 21, 202014 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Laramie County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 34 | 21 | 38% | 56 | 89% | 21 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Cheyenne, WY: tornado warnings | 6 | 1 | 83% | 6 | 50% | 14 min |
| NWS Cheyenne, WY: severe thunderstorm warnings | 154 | 76 | 51% | 255 | 75% | 23 min |
| NWS Cheyenne, WY: flash flood warnings | 5 | 2 | 60% | 3 | 67% | 30 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 2, 3:52 AM MST | High Wind Watch | CYS | 47 hr |
| Jan 2, 2:01 PM MST | High Wind Warning | CYS | 60 hr |
| Jan 5, 2:28 AM MST | High Wind Watch | CYS | 11 hr |
| Jan 5, 1:21 PM MST | High Wind Warning | CYS | 56 hr |
| Jan 7, 3:23 AM MST | High Wind Watch | CYS | 23 hr |
| Jan 8, 2:36 AM MST | High Wind Warning | CYS | 24 hr |
| Jan 10, 1:11 AM MST | High Wind Watch | CYS | 14 hr |
| Jan 10, 4:27 AM MST | Dense Fog Advisory | CYS | 4 hr |
| Jan 10, 2:42 PM MST | High Wind Warning | CYS | 25 hr |
| Jan 13, 1:41 AM MST | High Wind Warning | CYS | 31 hr |
| Jan 14, 1:42 PM MST | High Wind Watch | CYS | 8 hr |
| Jan 14, 8:17 PM MST | Snow Squall Warning | CYS | 28 min |
| Jan 14, 9:28 PM MST | High Wind Warning | CYS | 15 hr |
| Jan 15, 7:10 PM MST | High Wind Watch | CYS | 18 hr |
| Jan 16, 1:37 PM MST | High Wind Warning | CYS | 55 hr |
| Jan 17, 11:06 AM MST | Snow Squall Warning | CYS | 39 min |
| Jan 22, 2:49 PM MST | High Wind Warning | CYS | 4 hr |
| Jan 24, 12:39 PM MST | High Wind Watch | CYS | 20 hr |
| Jan 25, 2:26 AM MST | High Wind Warning | CYS | 30 hr |
| Jan 30, 12:41 PM MST | Winter Weather Advisory | CYS | 5 hr |
| Jan 30, 2:32 PM MST | High Wind Watch | CYS | 11 hr |
| Jan 30, 5:32 PM MST | Snow Squall Warning | CYS | 43 min |
| Jan 30, 6:15 PM MST | Snow Squall Warning | CYS | 45 min |
| Jan 31, 2:01 AM MST | High Wind Warning | CYS | 56 hr |
| Jan 31, 1:39 PM MST | Winter Storm Watch | CYS | 37 hr |
| Feb 1, 2:01 PM MST | Winter Storm Warning | CYS | 68 hr |
| Feb 2, 2:17 AM MST | Winter Storm Watch | CYS | 12 hr |
| Feb 2, 2:17 AM MST | Winter Weather Advisory | CYS | 56 hr |
| Feb 4, 12:09 PM MST | High Wind Warning | CYS | 45 hr |
| Feb 4, 12:30 PM MST | Winter Weather Advisory | CYS | 39 hr |
| Feb 5, 3:14 AM MST | Winter Storm Watch | CYS | 24 hr |
| Feb 5, 3:14 AM MST | Winter Storm Warning | CYS | 3 days |
| Feb 6, 3:21 AM MST | Winter Weather Advisory | CYS | 62 hr |
| Feb 7, 6:05 PM MST | Blizzard Warning | CYS | 14 hr |
| Feb 7, 6:09 PM MST | High Wind Warning | CYS | 23 hr |
| Feb 8, 4:30 PM MST | Snow Squall Warning | CYS | 45 min |
| Feb 8, 5:12 PM MST | Snow Squall Warning | CYS | 48 min |
| Feb 8, 5:45 PM MST | Snow Squall Warning | CYS | 30 min |
| Feb 8, 6:15 PM MST | Snow Squall Warning | CYS | 30 min |
| Feb 9, 7:00 PM MST | Freezing Fog Advisory | CYS | 3 hr |
| Feb 10, 4:39 PM MST | High Wind Watch | CYS | 21 hr |
| Feb 11, 2:28 AM MST | High Wind Warning | CYS | 27 hr |
| Feb 12, 1:33 PM MST | Snow Squall Warning | CYS | 27 min |
| Feb 12, 1:36 PM MST | Winter Weather Advisory | CYS | 12 hr |
| Feb 12, 1:39 PM MST | High Wind Watch | CYS | 23 hr |
| Feb 12, 2:15 PM MST | Snow Squall Warning | CYS | 30 min |
| Feb 12, 2:41 PM MST | Snow Squall Warning | CYS | 34 min |
| Feb 13, 1:02 PM MST | High Wind Warning | CYS | 4 days |
| Feb 15, 1:55 PM MST | High Wind Warning | CYS | 42 hr |
| Feb 15, 2:06 PM MST | Winter Weather Advisory | CYS | 54 hr |
| Feb 16, 2:06 AM MST | High Wind Watch | CYS | 11 hr |
| Feb 19, 7:32 AM MST | Freezing Fog Advisory | CYS | 113 min |
| Feb 21, 1:37 PM MST | High Wind Warning | CYS | 24 hr |
| Feb 22, 2:04 PM MST | High Wind Watch | CYS | 13 hr |
| Feb 23, 3:17 AM MST | High Wind Warning | CYS | 35 hr |
| Feb 23, 3:44 AM MST | Winter Weather Advisory | CYS | 64 hr |
| Feb 23, 1:43 PM MST | High Wind Watch | CYS | 11 hr |
| Feb 24, 10:03 AM MST | Snow Squall Warning | CYS | 27 min |
| Feb 24, 10:27 AM MST | Snow Squall Warning | CYS | 63 min |
| Feb 25, 5:15 AM MST | High Wind Warning | CYS | 4 hr |
| Feb 25, 9:26 AM MST | Blizzard Warning | CYS | 4 hr |
| Feb 25, 9:26 AM MST | Winter Weather Advisory | CYS | 11 hr |
| Feb 25, 3:11 PM MST | High Wind Watch | CYS | 10 hr |
| Feb 26, 1:21 AM MST | High Wind Warning | CYS | 26 hr |
| Feb 27, 1:19 PM MST | High Wind Watch | CYS | 12 hr |
| Feb 28, 1:09 AM MST | High Wind Watch | CYS | 19 hr |
| Feb 28, 1:09 AM MST | High Wind Warning | CYS | 32 hr |
| Feb 28, 1:25 AM MST | Winter Storm Watch | CYS | 37 hr |
| Feb 29, 2:05 AM MST | Winter Storm Warning | CYS | 45 hr |
| Feb 29, 2:05 AM MST | Winter Weather Advisory | CYS | 51 hr |
| Mar 2, 2:23 AM MST | High Wind Warning | CYS | 67 hr |
| Mar 9, 1:20 AM MDT | Dense Fog Advisory | CYS | 7 hr |
| Mar 10, 2:47 AM MDT | High Wind Watch | CYS | 10 hr |
| Mar 10, 12:59 PM MDT | High Wind Warning | CYS | 41 hr |
| Mar 12, 9:47 PM MDT | Freezing Fog Advisory | CYS | 36 hr |
| Mar 14, 3:04 PM MDT | Freezing Fog Advisory | CYS | 18 hr |
| Mar 16, 1:57 PM MDT | Winter Storm Watch | CYS | 14 hr |
| Mar 16, 9:56 PM MDT | Freezing Fog Advisory | CYS | 14 hr |
| Mar 17, 4:20 AM MDT | Blizzard Warning | CYS | 64 hr |
| Mar 17, 4:20 AM MDT | Winter Weather Advisory | CYS | 4 days |
| Mar 18, 6:10 PM MDT | Special Weather Statement | CYS | 50 min |
| Mar 19, 4:45 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Mar 20, 12:50 AM MDT | Freezing Fog Advisory | CYS | 14 hr |
| Mar 25, 2:03 PM MDT | Winter Storm Watch | CYS | 23 hr |
| Mar 25, 2:03 PM MDT | Winter Storm Warning | CYS | 52 hr |
| Mar 26, 12:42 PM MDT | Winter Weather Advisory | CYS | 48 hr |
| Apr 1, 3:15 AM MDT | Winter Weather Advisory | CYS | 41 hr |
| Apr 6, 2:19 PM MDT | High Wind Warning | CYS | 28 hr |
| Apr 10, 2:44 PM MDT | Winter Weather Advisory | CYS | 45 hr |
| Apr 13, 12:14 PM MDT | Winter Weather Advisory | CYS | 15 hr |
| Apr 14, 2:52 AM MDT | Winter Storm Watch | CYS | 24 hr |
| Apr 14, 2:31 PM MDT | Winter Storm Warning | CYS | 54 hr |
| Apr 22, 1:33 PM MDT | Winter Weather Advisory | CYS | 45 hr |
| Apr 22, 1:37 PM MDT | High Wind Warning | CYS | 19 hr |
| Apr 23, 5:56 PM MDT | Special Weather Statement | CYS | 49 min |
| May 1, 12:47 PM MDT | Mesoscale Discussion | SPC | 88 min |
| May 2, 2:44 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 3, 2:44 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 3, 5:02 PM MDT | Special Weather Statement | CYS | 43 min |
| May 6, 7:39 PM MDT | High Wind Warning | CYS | 22 hr |
| May 7, 8:31 AM MDT | High Wind Warning | CYS | 9 hr |
| May 11, 10:21 PM MDT | Dense Fog Advisory | CYS | 11 hr |
| May 13, 5:40 AM MDT | Dense Fog Advisory | CYS | 3 hr |
| May 14, 11:47 PM MDT | Special Weather Statement | CYS | 43 min |
| May 19, 4:57 PM MDT | Special Weather Statement | CYS | 48 min |
| May 19, 5:01 PM MDT | Mesoscale Discussion | SPC | 119 min |
| May 19, 5:34 PM MDT | Special Weather Statement | CYS | 41 min |
| May 20, 1:07 PM MDT | Mesoscale Discussion | SPC | 83 min |
| May 20, 2:22 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 20, 5:25 PM MDT | Mesoscale Discussion | SPC | 95 min |
| May 20, 6:02 PM MDT | Special Weather Statement | CYS | 43 min |
| May 20, 6:45 PM MDT | Special Weather Statement | CYS | 45 min |
| May 23, 12:48 PM MDT | Mesoscale Discussion | SPC | 117 min |
| May 23, 1:57 PM MDT | Special Weather Statement | CYS | 33 min |
| May 23, 2:57 PM MDT | Special Weather Statement | CYS | 48 min |
| May 23, 3:15 PM MDT | Severe Thunderstorm Warning | CYS | 45 min |
| May 29, 3:56 AM MDT | Dense Fog Advisory | CYS | 109 min |
| May 29, 5:42 PM MDT | Special Weather Statement | CYS | 48 min |
| May 29, 6:08 PM MDT | Mesoscale Discussion | SPC | 97 min |
| May 29, 7:43 PM MDT | Special Weather Statement | CYS | 47 min |
| May 29, 8:32 PM MDT | Special Weather Statement | CYS | 43 min |
| May 29, 9:02 PM MDT | Severe Thunderstorm Warning | CYS | 43 min |
| May 30, 1:45 PM MDT | Mesoscale Discussion | SPC | 90 min |
| May 31, 12:18 PM MDT | Mesoscale Discussion | SPC | 117 min |
| May 31, 3:43 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 31, 4:29 PM MDT | Special Weather Statement | CYS | 31 min |
| May 31, 4:41 PM MDT | Severe Thunderstorm Warning | CYS | 30 min |
| Jun 2, 4:01 PM MDT | Special Weather Statement | CYS | 29 min |
| Jun 2, 4:32 PM MDT | Special Weather Statement | CYS | 28 min |
| Jun 2, 4:58 PM MDT | Severe Thunderstorm Warning | CYS | 32 min |
| Jun 2, 5:28 PM MDT | Severe Thunderstorm Warning | CYS | 32 min |
| Jun 2, 5:57 PM MDT | Severe Thunderstorm Warning | CYS | 33 min |
| Jun 2, 6:35 PM MDT | Mesoscale Discussion | SPC | 85 min |
| Jun 3, 3:22 PM MDT | Severe Thunderstorm Warning | CYS | 38 min |
| Jun 3, 3:27 PM MDT | Severe Thunderstorm Warning | CYS | 33 min |
| Jun 3, 3:40 PM MDT | Severe Thunderstorm Warning | CYS | 35 min |
| Jun 3, 4:04 PM MDT | Special Weather Statement | CYS | 26 min |
| Jun 3, 4:42 PM MDT | Severe Thunderstorm Warning | CYS | 33 min |
| Jun 3, 4:54 PM MDT | Special Weather Statement | CYS | 36 min |
| Jun 3, 6:01 PM MDT | Special Weather Statement | CYS | 29 min |
| Jun 4, 1:17 PM MDT | Special Weather Statement | CYS | 88 min |
| Jun 6, 12:27 PM MDT | Mesoscale Discussion | SPC | 93 min |
| Jun 6, 1:23 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 6, 4:08 PM MDT | Severe Thunderstorm Warning | CYS | 52 min |
| Jun 6, 4:23 PM MDT | Severe Thunderstorm Warning | CYS | 37 min |
| Jun 6, 4:56 PM MDT | Severe Thunderstorm Warning | CYS | 49 min |
| Jun 7, 2:05 PM MDT | Special Weather Statement | CYS | 25 min |
| Jun 8, 3:36 AM MDT | Winter Weather Advisory | CYS | 31 hr |
| Jun 8, 5:54 PM MDT | Special Weather Statement | CYS | 51 min |
| Jun 8, 9:19 PM MDT | Winter Storm Warning | CYS | 12 hr |
| Jun 8, 9:41 PM MDT | Special Weather Statement | CYS | 49 min |
| Jun 13, 12:54 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 5:49 PM MDT | Special Weather Statement | CYS | 41 min |
| Jun 21, 3:17 PM MDT | Special Weather Statement | CYS | 43 min |
| Jun 21, 3:51 PM MDT | Special Weather Statement | CYS | 39 min |
| Jun 21, 4:28 PM MDT | Special Weather Statement | CYS | 32 min |
| Jun 25, 3:09 PM MDT | Special Weather Statement | CYS | 36 min |
| Jun 25, 3:21 PM MDT | Special Weather Statement | CYS | 39 min |
| Jun 25, 3:39 PM MDT | Severe Thunderstorm Warning | CYS | 36 min |
| Jun 25, 6:10 PM MDT | Special Weather Statement | CYS | 35 min |
| Jun 26, 12:07 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Jun 26, 1:10 PM MDT | Special Weather Statement | CYS | 50 min |
| Jun 26, 2:07 PM MDT | Special Weather Statement | CYS | 38 min |
| Jun 26, 2:30 PM MDT | Severe Thunderstorm Warning | CYS | 60 min |
| Jun 26, 3:28 PM MDT | Severe Thunderstorm Warning | CYS | 47 min |
| Jun 26, 3:51 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Jun 26, 4:07 PM MDT | Severe Thunderstorm Warning | CYS | 38 min |
| Jun 26, 4:43 PM MDT | Severe Thunderstorm Warning | CYS | 47 min |
| Jun 26, 6:08 PM MDT | Special Weather Statement | CYS | 52 min |
| Jun 28, 3:14 PM MDT | Special Weather Statement | CYS | 46 min |
| Jul 3, 3:51 PM MDT | Special Weather Statement | CYS | 39 min |
| Jul 3, 6:39 PM MDT | Severe Thunderstorm Warning | CYS | 51 min |
| Jul 4, 3:19 PM MDT | Special Weather Statement | CYS | 41 min |
| Jul 5, 3:25 PM MDT | Special Weather Statement | CYS | 50 min |
| Jul 5, 4:14 PM MDT | Special Weather Statement | CYS | 46 min |
| Jul 5, 5:26 PM MDT | Special Weather Statement | CYS | 49 min |
| Jul 6, 3:22 PM MDT | Special Weather Statement | CYS | 38 min |
| Jul 6, 3:57 PM MDT | Special Weather Statement | CYS | 48 min |
| Jul 9, 5:06 PM MDT | Special Weather Statement | CYS | 39 min |
| Jul 12, 5:52 PM MDT | Special Weather Statement | CYS | 38 min |
| Jul 12, 6:16 PM MDT | Special Weather Statement | CYS | 29 min |
| Jul 12, 6:46 PM MDT | Special Weather Statement | CYS | 29 min |
| Jul 13, 12:39 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 13, 12:41 PM MDT | Special Weather Statement | CYS | 19 min |
| Jul 13, 12:52 PM MDT | Special Weather Statement | CYS | 23 min |
| Jul 13, 1:15 PM MDT | Special Weather Statement | CYS | 30 min |
| Jul 13, 1:16 PM MDT | Special Weather Statement | CYS | 14 min |
| Jul 13, 1:39 PM MDT | Special Weather Statement | CYS | 21 min |
| Jul 13, 2:45 PM MDT | Special Weather Statement | CYS | 30 min |
| Jul 13, 3:27 PM MDT | Special Weather Statement | CYS | 48 min |
| Jul 13, 3:41 PM MDT | Severe Thunderstorm Warning | CYS | 49 min |
| Jul 13, 4:05 PM MDT | Severe Thunderstorm Warning | CYS | 40 min |
| Jul 13, 4:44 PM MDT | Severe Thunderstorm Warning | CYS | 31 min |
| Jul 16, 7:23 PM MDT | Special Weather Statement | CYS | 37 min |
| Jul 16, 7:57 PM MDT | Special Weather Statement | CYS | 33 min |
| Jul 18, 4:22 PM MDT | Special Weather Statement | CYS | 38 min |
| Jul 18, 5:50 PM MDT | Special Weather Statement | CYS | 40 min |
| Jul 19, 3:35 PM MDT | Severe Thunderstorm Warning | CYS | 40 min |
| Jul 20, 2:51 PM MDT | Mesoscale Discussion | SPC | 114 min |
| Jul 20, 5:41 PM MDT | Special Weather Statement | CYS | 49 min |
| Jul 20, 6:17 PM MDT | Special Weather Statement | CYS | 43 min |
| Jul 20, 6:25 PM MDT | Severe Thunderstorm Warning | CYS | 39 min |
| Jul 20, 7:22 PM MDT | Severe Thunderstorm Warning | CYS | 42 min |
| Jul 21, 1:12 PM MDT | Mesoscale Discussion | SPC | 93 min |
| Jul 21, 1:33 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 21, 3:03 PM MDT | Special Weather Statement | CYS | 42 min |
| Jul 21, 3:15 PM MDT | Severe Thunderstorm Warning | CYS | 30 min |
| Jul 21, 3:45 PM MDT | Special Weather Statement | CYS | 45 min |
| Jul 21, 3:52 PM MDT | Areal Flood Advisory | CYS | 3 hr |
| Jul 21, 4:25 PM MDT | Special Weather Statement | CYS | 50 min |
| Jul 21, 4:56 PM MDT | Special Weather Statement | CYS | 49 min |
| Jul 21, 4:59 PM MDT | Severe Thunderstorm Warning | CYS | 46 min |
| Jul 21, 5:22 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Jul 21, 5:49 PM MDT | Severe Thunderstorm Warning | CYS | 56 min |
| Jul 21, 6:44 PM MDT | Severe Thunderstorm Warning | CYS | 61 min |
| Jul 21, 6:54 PM MDT | Special Weather Statement | CYS | 51 min |
| Jul 21, 7:03 PM MDT | Severe Thunderstorm Warning | CYS | 42 min |
| Jul 21, 7:15 PM MDT | Mesoscale Discussion | SPC | 90 min |
| Jul 21, 7:37 PM MDT | Severe Thunderstorm Warning | CYS | 53 min |
| Jul 21, 7:40 PM MDT | Severe Thunderstorm Warning | CYS | 80 min |
| Jul 21, 7:42 PM MDT | Special Weather Statement | CYS | 48 min |
| Jul 21, 8:10 PM MDT | Special Weather Statement | CYS | 50 min |
| Jul 21, 8:17 PM MDT | Severe Thunderstorm Warning | CYS | 62 min |
| Jul 22, 6:48 PM MDT | Areal Flood Advisory | CYS | 3 hr |
| Jul 22, 7:03 PM MDT | Special Weather Statement | CYS | 42 min |
| Jul 22, 9:17 PM MDT | Special Weather Statement | CYS | 43 min |
| Jul 22, 9:36 PM MDT | Special Weather Statement | CYS | 39 min |
| Jul 22, 10:08 PM MDT | Special Weather Statement | CYS | 37 min |
| Jul 28, 6:15 PM MDT | Special Weather Statement | CYS | 45 min |
| Aug 1, 3:13 PM MDT | Special Weather Statement | CYS | 32 min |
| Aug 2, 1:58 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 2, 4:40 PM MDT | Special Weather Statement | CYS | 50 min |
| Aug 2, 5:45 PM MDT | Special Weather Statement | CYS | 45 min |
| Aug 2, 5:59 PM MDT | Special Weather Statement | CYS | 46 min |
| Aug 3, 5:19 PM MDT | Special Weather Statement | CYS | 41 min |
| Aug 3, 5:46 PM MDT | Special Weather Statement | CYS | 44 min |
| Aug 4, 12:52 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Aug 4, 1:46 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 4, 3:35 PM MDT | Special Weather Statement | CYS | 40 min |
| Aug 4, 3:44 PM MDT | Special Weather Statement | CYS | 46 min |
| Aug 4, 4:16 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Aug 4, 10:50 PM MDT | Special Weather Statement | CYS | 40 min |
| Aug 5, 12:21 AM MDT | Special Weather Statement | CYS | 24 min |
| Aug 5, 12:27 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 5, 1:23 PM MDT | Special Weather Statement | CYS | 52 min |
| Aug 5, 1:26 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 5, 1:59 PM MDT | Special Weather Statement | CYS | 46 min |
| Aug 5, 2:27 PM MDT | Special Weather Statement | CYS | 48 min |
| Aug 5, 3:16 PM MDT | Special Weather Statement | CYS | 44 min |
| Aug 5, 4:52 PM MDT | Special Weather Statement | CYS | 38 min |
| Aug 5, 5:21 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Aug 6, 12:45 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 6, 1:28 PM MDT | Special Weather Statement | CYS | 47 min |
| Aug 6, 2:31 PM MDT | Special Weather Statement | CYS | 44 min |
| Aug 11, 1:16 PM MDT | Special Weather Statement | CYS | 44 min |
| Aug 20, 6:08 PM MDT | Special Weather Statement | CYS | 52 min |
| Aug 23, 4:24 PM MDT | Special Weather Statement | CYS | 51 min |
| Aug 24, 6:38 PM MDT | Special Weather Statement | CYS | 37 min |
| Aug 27, 12:31 PM MDT | Special Weather Statement | CYS | 44 min |
| Aug 27, 3:28 PM MDT | Special Weather Statement | CYS | 47 min |
| Aug 27, 3:41 PM MDT | Severe Thunderstorm Warning | CYS | 38 min |
| Aug 27, 4:23 PM MDT | Special Weather Statement | CYS | 52 min |
| Aug 29, 12:15 PM MDT | Mesoscale Discussion | SPC | 90 min |
| Sep 6, 3:22 AM MDT | Winter Storm Watch | CYS | 25 hr |
| Sep 7, 4:09 AM MDT | Winter Storm Warning | CYS | 46 hr |
| Sep 7, 4:09 AM MDT | Winter Weather Advisory | CYS | 46 hr |
| Sep 7, 1:28 PM MDT | Freeze Warning | CYS | 43 hr |
| Sep 7, 8:41 PM MDT | Dense Fog Advisory | CYS | 3 hr |
| Sep 8, 8:21 AM MDT | Mesoscale Discussion | SPC | 4 hr |
| Sep 9, 6:09 AM MDT | Freezing Fog Advisory | CYS | 5 hr |
| Sep 9, 10:06 PM MDT | Freezing Fog Advisory | CYS | 8 hr |
| Sep 25, 3:52 AM MDT | High Wind Watch | CYS | 10 hr |
| Sep 25, 2:04 PM MDT | High Wind Warning | CYS | 28 hr |
| Oct 10, 9:03 PM MDT | High Wind Watch | CYS | 5 hr |
| Oct 10, 9:03 PM MDT | High Wind Warning | CYS | 51 hr |
| Oct 12, 2:57 PM MDT | High Wind Watch | CYS | 23 hr |
| Oct 13, 4:03 AM MDT | High Wind Warning | CYS | 38 hr |
| Oct 15, 2:08 AM MDT | High Wind Watch | CYS | 33 hr |
| Oct 15, 2:43 PM MDT | High Wind Warning | CYS | 51 hr |
| Oct 18, 2:48 AM MDT | High Wind Watch | CYS | 11 hr |
| Oct 18, 2:48 AM MDT | High Wind Warning | CYS | 57 hr |
| Oct 18, 2:48 AM MDT | Freezing Fog Advisory | CYS | 6 hr |
| Oct 22, 2:48 AM MDT | Dense Fog Advisory | CYS | 6 hr |
| Oct 22, 8:31 PM MDT | Winter Weather Advisory | CYS | 6 hr |
| Oct 23, 2:56 AM MDT | High Wind Watch | CYS | 12 hr |
| Oct 23, 2:56 AM MDT | High Wind Warning | CYS | 39 hr |
| Oct 23, 2:54 PM MDT | Winter Storm Watch | CYS | 13 hr |
| Oct 23, 2:54 PM MDT | Winter Weather Advisory | CYS | 51 hr |
| Oct 24, 4:22 AM MDT | Winter Storm Warning | CYS | 46 hr |
| Oct 25, 8:50 PM MDT | Wind Chill Advisory | CYS | 12 hr |
| Oct 26, 2:34 PM MDT | Wind Chill Advisory | CYS | 18 hr |
| Oct 29, 2:22 PM MDT | High Wind Watch | CYS | 24 hr |
| Oct 30, 2:37 AM MDT | High Wind Warning | CYS | 28 hr |
| Nov 6, 1:32 PM MST | High Wind Watch | CYS | 14 hr |
| Nov 7, 3:37 AM MST | High Wind Warning | CYS | 31 hr |
| Nov 8, 2:10 PM MST | High Wind Watch | CYS | 13 hr |
| Nov 9, 3:17 AM MST | High Wind Warning | CYS | 44 hr |
| Nov 9, 9:22 AM MST | Dense Fog Advisory | CYS | 6 hr |
| Nov 12, 1:21 AM MST | High Wind Watch | CYS | 24 hr |
| Nov 12, 8:18 PM MST | High Wind Warning | CYS | 4 days |
| Nov 14, 4:03 PM MST | Snow Squall Warning | CYS | 42 min |
| Nov 16, 1:08 PM MST | High Wind Watch | CYS | 37 hr |
| Nov 17, 3:00 AM MST | High Wind Warning | CYS | 50 hr |
| Nov 23, 1:39 AM MST | High Wind Watch | CYS | 43 hr |
| Nov 24, 1:36 AM MST | High Wind Warning | CYS | 39 hr |
| Nov 29, 1:55 AM MST | High Wind Watch | CYS | 11 hr |
| Nov 29, 12:47 PM MST | High Wind Watch | CYS | 14 hr |
| Nov 29, 12:47 PM MST | High Wind Warning | CYS | 39 hr |
| Dec 4, 5:23 AM MST | High Wind Warning | CYS | 7 hr |
| Dec 10, 6:57 PM MST | Dense Fog Advisory | CYS | 14 hr |
| Dec 14, 1:13 PM MST | High Wind Watch | CYS | 13 hr |
| Dec 15, 2:13 AM MST | High Wind Warning | CYS | 59 hr |
| Dec 18, 2:42 AM MST | High Wind Watch | CYS | 10 hr |
| Dec 18, 1:08 PM MST | High Wind Watch | CYS | 13 hr |
| Dec 18, 1:08 PM MST | High Wind Warning | CYS | 3 days |
| Dec 21, 1:31 PM MST | High Wind Warning | CYS | 4 days |
| Dec 22, 1:13 PM MST | High Wind Warning | CYS | 21 hr |
| Dec 22, 5:50 PM MST | Snow Squall Warning | CYS | 25 min |
| Dec 22, 6:22 PM MST | Snow Squall Warning | CYS | 20 min |
| Dec 22, 11:51 PM MST | Snow Squall Warning | CYS | 24 min |
| Dec 23, 12:18 AM MST | Snow Squall Warning | CYS | 42 min |
| Dec 25, 3:09 AM MST | High Wind Warning | CYS | 35 hr |
| Dec 28, 1:17 AM MST | Winter Storm Warning | CYS | 39 hr |
| Dec 28, 1:17 AM MST | Winter Weather Advisory | CYS | 39 hr |
| Dec 29, 2:26 AM MST | High Wind Watch | CYS | 11 hr |
| Dec 29, 1:44 PM MST | High Wind Warning | CYS | 40 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 | 34 |
| Severe Thunderstorm Watch | 6 |
| Mesoscale Discussion | 29 |
| Special Weather Statement | 94 |
| Flooding | |
| Areal Flood Advisory | 2 |
| Winter | |
| Blizzard Warning | 3 |
| Snow Squall Warning | 18 |
| Winter Storm Warning | 9 |
| Winter Storm Watch | 9 |
| Winter Weather Advisory | 20 |
| Cold | |
| Freeze Warning | 1 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 46 |
| High Wind Watch | 35 |
| Fog and smoke | |
| Dense Fog Advisory | 9 |
| Freezing Fog Advisory | 9 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.