Alert archive / Illinois / Shelby County
Weather alerts in Shelby County, Illinois, 2022
121 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Shelby County and its neighbors
Each county as a circle sized by its count in 2022. Tap one for its archive.
- Alerts
- 121
- Warnings
- 33
- Watches
- 22
- Advisories
- 33
- Busiest month
- August27 alerts
- Busiest day
- August 2, 20229 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Shelby County, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 11 | 7 | 36% | 6 | 83% | 20 min |
| Flash flood warnings | 9 | 4 | 56% | 3 | 67% | 143 min |
Each office's whole area, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Lincoln, IL: tornado warnings | 9 | 1 | 89% | 15 | 7% | 12 min |
| NWS Lincoln, IL: severe thunderstorm warnings | 156 | 77 | 51% | 292 | 72% | 19 min |
| NWS Lincoln, IL: flash flood warnings | 52 | 25 | 52% | 53 | 74% | 91 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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 6, 2:37 AM CST | Wind Chill Advisory | ILX | 30 hr |
| Jan 7, 2:44 PM CST | Winter Weather Advisory | ILX | 33 hr |
| Jan 8, 12:41 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Jan 13, 3:48 PM CST | Dense Fog Advisory | ILX | 17 hr |
| Jan 31, 3:21 AM CST | Winter Storm Watch | ILX | 35 hr |
| Jan 31, 3:18 PM CST | Winter Storm Warning | ILX | 3 days |
| Feb 2, 1:44 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 2, 7:11 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Feb 2, 9:03 PM CST | Winter Weather Advisory | ILX | 33 hr |
| Feb 4, 2:19 PM CST | Wind Chill Advisory | ILX | 19 hr |
| Feb 15, 2:46 AM CST | Flood Watch | ILX | 63 hr |
| Feb 15, 2:49 PM CST | Wind Advisory | ILX | 27 hr |
| Feb 15, 2:58 PM CST | Winter Storm Watch | ILX | 20 hr |
| Feb 16, 10:44 AM CST | Winter Weather Advisory | ILX | 34 hr |
| Feb 17, 6:52 AM CST | Areal Flood Advisory | ILX | 7 hr |
| Feb 23, 3:32 PM CST | Winter Weather Advisory | ILX | 35 hr |
| Feb 24, 12:15 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Mar 5, 3:27 AM CST | Wind Advisory | ILX | 27 hr |
| Mar 5, 8:36 PM CST | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 5, 10:59 PM CST | Severe Thunderstorm Warning | ILX | 46 min |
| Mar 5, 11:31 PM CST | Severe Thunderstorm Warning | ILX | 44 min |
| Mar 5, 11:49 PM CST | Severe Thunderstorm Warning | ILX | 41 min |
| Mar 29, 2:44 PM CDT | Wind Advisory | ILX | 29 hr |
| Mar 30, 9:03 AM CDT | Mesoscale Discussion | SPC | 117 min |
| Apr 8, 2:38 AM CDT | Freeze Warning | ILX | 29 hr |
| Apr 8, 2:25 PM CDT | Freeze Watch | ILX | 23 hr |
| Apr 9, 1:39 PM CDT | Freeze Warning | ILX | 18 hr |
| Apr 17, 1:49 PM CDT | Freeze Watch | ILX | 23 hr |
| Apr 18, 3:13 AM CDT | Freeze Warning | ILX | 29 hr |
| Apr 24, 10:56 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 24, 12:46 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 24, 2:52 PM CDT | Special Weather Statement | ILX | 23 min |
| Apr 24, 2:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Apr 25, 3:13 AM CDT | Frost Advisory | ILX | 29 hr |
| Apr 26, 3:05 AM CDT | Frost Advisory | ILX | 29 hr |
| Apr 30, 12:32 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Apr 30, 1:46 PM CDT | Tornado Watch | SPC | 8 hr |
| Apr 30, 6:29 PM CDT | Severe Thunderstorm Warning | ILX | 46 min |
| May 15, 2:03 PM CDT | Mesoscale Discussion | SPC | 117 min |
| May 15, 2:22 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 19, 10:05 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 19, 6:44 PM CDT | Severe Thunderstorm Warning | ILX | 46 min |
| May 21, 6:40 AM CDT | Special Weather Statement | ILX | 50 min |
| May 21, 11:13 AM CDT | Special Weather Statement | ILX | 62 min |
| May 26, 9:52 AM CDT | Mesoscale Discussion | SPC | 83 min |
| May 27, 8:22 PM CDT | Dense Fog Advisory | ILX | 13 hr |
| Jun 12, 10:15 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 12, 2:27 PM CDT | Heat Advisory | ILX | 37 hr |
| Jun 14, 3:03 AM CDT | Excessive Heat Warning | ILX | 65 hr |
| Jun 15, 2:49 PM CDT | Heat Advisory | ILX | 29 hr |
| Jun 17, 1:42 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 17, 5:22 AM CDT | Severe Thunderstorm Warning | ILX | 23 min |
| Jun 17, 5:38 AM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 17, 5:43 AM CDT | Severe Thunderstorm Warning | ILX | 30 min |
| Jun 17, 5:47 AM CDT | Severe Thunderstorm Warning | ILX | 43 min |
| Jun 17, 6:07 AM CDT | Flash Flood Warning | ILX | 4 hr |
| Jun 25, 5:02 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 25, 7:16 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Jun 25, 9:27 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jun 25, 11:13 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Jul 3, 2:07 PM CDT | Heat Advisory | ILX | 3 days |
| Jul 7, 3:10 PM CDT | Flood Watch | ILX | 19 hr |
| Jul 8, 8:27 AM CDT | Flash Flood Warning | ILX | 3 hr |
| Jul 8, 4:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 8, 10:00 PM CDT | Areal Flood Advisory | ILX | 3 hr |
| Jul 11, 3:40 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 16, 12:09 AM CDT | Special Weather Statement | ILX | 36 min |
| Jul 16, 12:49 AM CDT | Special Weather Statement | ILX | 26 min |
| Jul 22, 3:18 AM CDT | Heat Advisory | ILX | 63 hr |
| Jul 24, 3:38 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 25, 2:46 AM CDT | Flood Watch | ILX | 30 hr |
| Aug 1, 5:51 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Aug 2, 3:58 AM CDT | Severe Thunderstorm Warning | ILX | 32 min |
| Aug 2, 4:54 AM CDT | Flash Flood Warning | ILX | 8 hr |
| Aug 2, 5:52 AM CDT | Flash Flood Warning | ILX | 6 hr |
| Aug 2, 7:04 AM CDT | Flash Flood Warning | ILX | 6 hr |
| Aug 2, 9:24 AM CDT | Flash Flood Warning | ILX | 3 hr |
| Aug 2, 9:53 AM CDT | Severe Thunderstorm Warning | ILX | 52 min |
| Aug 2, 10:12 AM CDT | Flash Flood Warning | ILX | 3 hr |
| Aug 2, 12:23 PM CDT | Areal Flood Warning | ILX | 6 hr |
| Aug 2, 2:53 PM CDT | Heat Advisory | ILX | 28 hr |
| Aug 3, 1:51 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 3, 1:58 PM CDT | Flood Watch | ILX | 17 hr |
| Aug 3, 3:43 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Aug 3, 10:36 PM CDT | Areal Flood Warning | ILX | 2 hr |
| Aug 6, 6:47 AM CDT | Dense Fog Advisory | ILX | 2 hr |
| Aug 8, 10:02 AM CDT | Flood Watch | ILX | 18 hr |
| Aug 8, 7:55 PM CDT | Flash Flood Warning | ILX | 2 hr |
| Aug 9, 8:16 AM CDT | Areal Flood Advisory | ILX | 4 hr |
| Aug 20, 12:51 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 20, 2:45 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 29, 4:23 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 29, 4:40 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 29, 6:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 29, 8:28 PM CDT | Severe Thunderstorm Warning | ILX | 32 min |
| Aug 29, 8:31 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Aug 29, 9:57 PM CDT | Special Weather Statement | ILX | 33 min |
| Aug 29, 10:07 PM CDT | Flash Flood Warning | ILX | 3 hr |
| Sep 18, 9:28 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 18, 11:28 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 19, 1:58 AM CDT | Mesoscale Discussion | SPC | 92 min |
| Oct 6, 2:47 PM CDT | Freeze Watch | ILX | 23 hr |
| Oct 7, 2:57 AM CDT | Frost Advisory | ILX | 30 hr |
| Oct 8, 3:27 AM CDT | Frost Advisory | ILX | 29 hr |
| Oct 14, 2:53 AM CDT | Red Flag Warning | ILX | 16 hr |
| Oct 16, 2:48 AM CDT | Freeze Watch | ILX | 12 hr |
| Oct 16, 3:14 PM CDT | Freeze Warning | ILX | 42 hr |
| Oct 18, 2:04 PM CDT | Freeze Warning | ILX | 19 hr |
| Oct 30, 7:26 PM CDT | Dense Fog Advisory | ILX | 15 hr |
| Oct 31, 8:16 PM CDT | Dense Fog Advisory | ILX | 15 hr |
| Nov 3, 2:52 PM CDT | Wind Advisory | ILX | 49 hr |
| Nov 5, 1:44 AM CDT | High Wind Warning | ILX | 11 hr |
| Nov 29, 3:43 AM CST | Wind Advisory | ILX | 20 hr |
| Dec 1, 2:09 PM CST | Wind Advisory | ILX | 39 hr |
| Dec 6, 12:36 AM CST | Dense Fog Advisory | ILX | 9 hr |
| Dec 7, 3:42 AM CST | Dense Fog Advisory | ILX | 8 hr |
| Dec 19, 3:32 PM CST | Winter Storm Watch | ILX | 43 hr |
| Dec 21, 10:59 AM CST | Winter Storm Warning | ILX | 48 hr |
| Dec 23, 10:34 AM CST | Wind Chill Warning | ILX | 25 hr |
| Dec 23, 1:53 PM CST | Wind Chill Advisory | ILX | 21 hr |
| Dec 24, 1:03 PM CST | Wind Chill Advisory | ILX | 20 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 archive20212023
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.