Alert archive / Illinois / Shelby County
Weather alerts in Shelby County, Illinois, 2024
107 weather alerts in 2024, 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 2024. Tap one for its archive.
- Alerts
- 107
- Warnings
- 26
- Watches
- 22
- Advisories
- 27
- Busiest month
- April22 alerts
- Busiest day
- March 14, 202413 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 4 tornado warnings covering Shelby County in 2024 had a tornado report inside them.
Shelby County, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 4 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 14 | 8 | 43% | 6 | 50% | 12 min |
| Flash flood warnings | 4 | 0 | 100% | 0 |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Lincoln, IL: tornado warnings | 35 | 2 | 94% | 31 | 16% | 22 min |
| NWS Lincoln, IL: severe thunderstorm warnings | 218 | 93 | 57% | 459 | 75% | 22 min |
| NWS Lincoln, IL: flash flood warnings | 26 | 7 | 73% | 26 | 81% | 118 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 11, 1:06 PM CST | Wind Advisory | ILX | 41 hr |
| Jan 12, 2:27 PM CST | Wind Chill Watch | ILX | 23 hr |
| Jan 13, 2:55 AM CST | Wind Chill Warning | ILX | 3 days |
| Jan 13, 2:55 AM CST | Wind Chill Advisory | ILX | 4 days |
| Jan 18, 2:23 PM CST | Wind Chill Advisory | ILX | 46 hr |
| Jan 21, 3:00 AM CST | Winter Weather Advisory | ILX | 54 hr |
| Jan 22, 3:27 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Jan 23, 2:26 PM CST | Dense Fog Advisory | ILX | 70 hr |
| Jan 26, 1:24 PM CST | Dense Fog Advisory | ILX | 26 hr |
| Feb 6, 4:05 AM CST | Dense Fog Advisory | ILX | 9 hr |
| Feb 15, 1:32 PM CST | Winter Weather Advisory | ILX | 28 hr |
| Feb 27, 5:47 PM CST | Mesoscale Discussion | SPC | 88 min |
| Mar 2, 2:54 AM CST | Dense Fog Advisory | ILX | 7 hr |
| Mar 14, 4:41 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 14, 7:39 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 14, 8:13 AM CDT | Severe Thunderstorm Warning | ILX | 47 min |
| Mar 14, 8:26 AM CDT | Severe Thunderstorm Warning | ILX | 49 min |
| Mar 14, 1:33 PM CDT | Tornado Watch | SPC | 7 hr |
| Mar 14, 3:55 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Mar 14, 5:09 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Mar 14, 5:25 PM CDT | Tornado Warning | ILX | 35 min |
| Mar 14, 5:48 PM CDT | Severe Thunderstorm Warning | ILX | 42 min |
| Mar 14, 5:51 PM CDT | Severe Thunderstorm Warning | ILX | 39 min |
| Mar 14, 6:25 PM CDT | Severe Thunderstorm Warning | ILX | 28 min |
| Mar 14, 6:34 PM CDT | Tornado Warning | ILX | 12 min |
| Mar 14, 6:50 PM CDT | Flash Flood Warning | ILX | 3 hr |
| Mar 24, 2:00 PM CDT | Wind Advisory | ILX | 34 hr |
| Mar 31, 5:26 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 1, 10:24 AM CDT | Flood Watch | ILX | 20 hr |
| Apr 1, 12:35 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Apr 1, 3:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Apr 1, 4:49 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 1, 6:34 PM CDT | Severe Thunderstorm Warning | ILX | 26 min |
| Apr 1, 6:45 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Apr 1, 7:00 PM CDT | Severe Thunderstorm Warning | ILX | 30 min |
| Apr 1, 7:15 PM CDT | Flash Flood Warning | ILX | 4 hr |
| Apr 5, 2:13 AM CDT | Freeze Warning | ILX | 30 hr |
| Apr 8, 4:09 AM CDT | Dense Fog Advisory | ILX | 5 hr |
| Apr 16, 2:57 PM CDT | Wind Advisory | ILX | 6 hr |
| Apr 16, 3:21 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 18, 12:08 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 18, 12:56 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Apr 18, 3:09 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 18, 6:12 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Apr 18, 6:42 PM CDT | Tornado Warning | ILX | 48 min |
| Apr 18, 7:20 PM CDT | Severe Thunderstorm Warning | ILX | 55 min |
| Apr 20, 2:25 PM CDT | Frost Advisory | ILX | 18 hr |
| Apr 21, 2:32 AM CDT | Frost Advisory | ILX | 29 hr |
| Apr 23, 11:28 PM CDT | Dense Fog Advisory | ILX | 4 hr |
| Apr 29, 9:53 PM CDT | Dense Fog Advisory | ILX | 11 hr |
| May 4, 6:48 PM CDT | Special Weather Statement | ILX | 42 min |
| May 7, 12:53 AM CDT | Tornado Watch | SPC | 7 hr |
| May 7, 4:42 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 7, 1:28 PM CDT | Tornado Watch | SPC | 12 hr |
| May 21, 9:50 PM CDT | Special Weather Statement | ILX | 55 min |
| May 24, 1:39 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 24, 2:39 PM CDT | Severe Thunderstorm Watch | SPC | 10 hr |
| May 24, 3:57 PM CDT | Mesoscale Discussion | SPC | 93 min |
| May 24, 6:19 PM CDT | Mesoscale Discussion | SPC | 116 min |
| May 25, 2:15 PM CDT | Flood Watch | ILX | 32 hr |
| May 26, 5:38 PM CDT | Mesoscale Discussion | SPC | 67 min |
| May 26, 6:27 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 5, 10:38 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 13, 7:48 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 13, 8:12 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 25, 11:43 AM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 25, 12:10 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 25, 12:30 PM CDT | Special Weather Statement | ILX | 30 min |
| Jun 25, 4:47 PM CDT | Special Weather Statement | ILX | 28 min |
| Jun 29, 11:42 AM CDT | Mesoscale Discussion | SPC | 63 min |
| Jun 29, 5:10 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Jul 8, 1:52 AM CDT | Flood Watch | ILX | 51 hr |
| Jul 9, 6:43 PM CDT | Areal Flood Advisory | ILX | 2 hr |
| Jul 13, 2:51 PM CDT | Heat Advisory | ILX | 53 hr |
| Jul 15, 2:47 PM CDT | Flood Watch | ILX | 16 hr |
| Jul 15, 9:37 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Jul 15, 9:56 PM CDT | Special Weather Statement | ILX | 64 min |
| Jul 15, 9:59 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 16, 1:05 AM CDT | Flash Flood Warning | ILX | 3 hr |
| Jul 16, 2:52 AM CDT | Flash Flood Warning | ILX | 4 hr |
| Jul 29, 7:48 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 29, 8:07 PM CDT | Tornado Warning | ILX | 23 min |
| Jul 30, 2:23 AM CDT | Heat Advisory | ILX | 18 hr |
| Jul 30, 6:14 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 30, 8:05 AM CDT | Severe Thunderstorm Warning | ILX | 40 min |
| Jul 30, 8:36 AM CDT | Severe Thunderstorm Warning | ILX | 24 min |
| Jul 30, 8:58 AM CDT | Severe Thunderstorm Warning | ILX | 47 min |
| Jul 30, 9:09 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 30, 2:58 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 30, 3:17 PM CDT | Severe Thunderstorm Warning | ILX | 43 min |
| Jul 30, 3:48 PM CDT | Severe Thunderstorm Warning | ILX | 42 min |
| Jul 30, 4:25 PM CDT | Severe Thunderstorm Warning | ILX | 65 min |
| Jul 31, 5:50 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 1, 2:19 AM CDT | Mesoscale Discussion | SPC | 86 min |
| Aug 16, 1:19 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Aug 25, 2:22 PM CDT | Heat Advisory | ILX | 54 hr |
| Aug 30, 3:41 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 26, 1:28 PM CDT | Wind Advisory | ILX | 36 hr |
| Sep 27, 10:53 AM CDT | High Wind Warning | ILX | 11 hr |
| Oct 15, 2:31 AM CDT | Frost Advisory | ILX | 29 hr |
| Oct 16, 2:01 PM CDT | Freeze Warning | ILX | 18 hr |
| Oct 28, 2:41 PM CDT | Fire Weather Watch | ILX | 12 hr |
| Nov 18, 3:32 AM CST | Wind Advisory | ILX | 26 hr |
| Nov 21, 3:02 AM CST | Wind Advisory | ILX | 18 hr |
| Dec 4, 2:18 AM CST | Wind Advisory | ILX | 23 hr |
| Dec 15, 8:33 PM CST | Dense Fog Advisory | ILX | 14 hr |
| Dec 28, 5:52 AM CST | Dense Fog Advisory | ILX | 3 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 | 14 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 12 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 27 |
| Special Weather Statement | 5 |
| Flooding | |
| Flash Flood Warning | 4 |
| Flood Watch | 4 |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Weather Advisory | 2 |
| Heat | |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 2 |
| Wind Chill Warning | 1 |
| Wind Chill Watch | 1 |
| Frost Advisory | 3 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 7 |
| Fire | |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 9 |
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.