Alert archive / Illinois / Shelby County
Weather alerts in Shelby County, Illinois, 2014
102 weather alerts in 2014, 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 2014. Tap one for its archive.
- Alerts
- 102
- Warnings
- 20
- Watches
- 20
- Advisories
- 27
- Busiest month
- February23 alerts
- Busiest day
- February 20, 201411 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
3 of 4 tornado warnings covering Shelby County in 2014 had a tornado report inside them; 3 of 3 tornado reports fell inside a warning, on average 16 minutes after it went out.
Shelby County, 2014
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 4 | 3 | 25% | 3 | 100% | 16 min |
| Severe thunderstorm warnings | 6 | 3 | 50% | 5 | 60% | 26 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2014
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Lincoln, IL: tornado warnings | 23 | 8 | 65% | 19 | 84% | 14 min |
| NWS Lincoln, IL: severe thunderstorm warnings | 109 | 51 | 53% | 227 | 55% | 22 min |
| NWS Lincoln, IL: flash flood warnings | 40 | 10 | 75% | 35 | 69% | 83 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 1, 3:16 AM CST | Winter Weather Advisory | ILX | 30 hr |
| Jan 3, 11:40 AM CST | Winter Storm Watch | ILX | 16 hr |
| Jan 4, 4:01 AM CST | Winter Storm Warning | ILX | 44 hr |
| Jan 4, 3:15 PM CST | Wind Chill Warning | ILX | 69 hr |
| Jan 5, 9:42 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Jan 22, 3:45 AM CST | Wind Chill Advisory | ILX | 55 hr |
| Jan 25, 3:02 PM CST | Wind Chill Advisory | ILX | 66 hr |
| Jan 26, 3:32 AM CST | Wind Advisory | ILX | 24 hr |
| Jan 31, 3:01 PM CST | Winter Weather Advisory | ILX | 39 hr |
| Feb 3, 4:14 AM CST | Winter Storm Watch | ILX | 11 hr |
| Feb 3, 3:33 PM CST | Winter Storm Warning | ILX | 44 hr |
| Feb 4, 11:38 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 5, 3:14 AM CST | Wind Chill Advisory | ILX | 33 hr |
| Feb 6, 3:19 AM CST | Wind Chill Advisory | ILX | 32 hr |
| Feb 13, 3:19 PM CST | Winter Weather Advisory | ILX | 27 hr |
| Feb 14, 9:59 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Feb 16, 3:43 AM CST | Winter Weather Advisory | ILX | 36 hr |
| Feb 19, 9:16 PM CST | High Wind Watch | ILX | 6 hr |
| Feb 20, 3:15 AM CST | Wind Advisory | ILX | 24 hr |
| Feb 20, 3:23 PM CST | Mesoscale Discussion | SPC | 97 min |
| Feb 20, 3:50 PM CST | Severe Thunderstorm Watch | SPC | 56 min |
| Feb 20, 4:01 PM CST | Severe Thunderstorm Warning | ILX | 59 min |
| Feb 20, 4:11 PM CST | Tornado Warning | ILX | 34 min |
| Feb 20, 4:40 PM CST | Tornado Warning | ILX | 35 min |
| Feb 20, 4:45 PM CST | Tornado Watch | SPC | 3 hr |
| Feb 20, 4:47 PM CST | Tornado Warning | ILX | 28 min |
| Feb 20, 5:06 PM CST | Severe Thunderstorm Warning | ILX | 54 min |
| Feb 20, 5:42 PM CST | Flash Flood Warning | ILX | 6 hr |
| Feb 20, 10:48 PM CST | Areal Flood Warning | ILX | 15 hr |
| Feb 21, 12:31 PM CST | Areal Flood Advisory | ILX | 51 hr |
| Feb 22, 9:01 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 28, 3:24 AM CST | Winter Storm Watch | ILX | 36 hr |
| Mar 1, 3:04 PM CST | Winter Storm Warning | ILX | 33 hr |
| Mar 11, 3:17 AM CDT | Winter Weather Advisory | ILX | 32 hr |
| Mar 11, 10:39 PM CDT | Wind Advisory | ILX | 12 hr |
| Apr 2, 3:03 AM CDT | Flood Watch | ILX | 48 hr |
| Apr 3, 2:49 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Apr 3, 7:26 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Apr 10, 4:01 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Apr 14, 3:08 PM CDT | Freeze Warning | ILX | 18 hr |
| Apr 15, 3:07 PM CDT | Freeze Warning | ILX | 16 hr |
| Apr 28, 1:11 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 28, 3:38 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 28, 4:59 PM CDT | Severe Thunderstorm Warning | ILX | 61 min |
| Apr 28, 5:56 PM CDT | Severe Thunderstorm Warning | ILX | 49 min |
| Apr 28, 6:10 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Apr 28, 6:32 PM CDT | Severe Thunderstorm Warning | ILX | 43 min |
| May 9, 11:46 AM CDT | Mesoscale Discussion | SPC | 59 min |
| May 9, 12:50 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 9, 6:25 PM CDT | Mesoscale Discussion | SPC | 65 min |
| May 11, 4:09 PM CDT | Severe Thunderstorm Warning | ILX | 66 min |
| May 21, 1:40 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 21, 3:12 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 21, 7:28 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 4, 1:29 AM CDT | Mesoscale Discussion | SPC | 91 min |
| Jun 4, 1:52 AM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 4, 3:46 AM CDT | Mesoscale Discussion | SPC | 59 min |
| Jun 7, 4:44 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 12, 5:05 AM CDT | Dense Fog Advisory | ILX | 4 hr |
| Jun 12, 7:21 PM CDT | Areal Flood Advisory | ILX | 6 hr |
| Jun 18, 2:56 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 21, 1:33 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 21, 6:16 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Jun 23, 10:02 PM CDT | Areal Flood Advisory | ILX | 3 hr |
| Jun 30, 10:18 AM CDT | Mesoscale Discussion | SPC | 87 min |
| Jul 7, 8:52 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 8, 12:49 AM CDT | Mesoscale Discussion | SPC | 86 min |
| Jul 14, 11:42 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 14, 2:21 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Jul 25, 2:10 PM CDT | Special Weather Statement | ILX | 65 min |
| Jul 26, 3:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Aug 6, 4:16 AM CDT | Dense Fog Advisory | ILX | 5 hr |
| Aug 18, 3:21 AM CDT | Dense Fog Advisory | ILX | 6 hr |
| Aug 21, 3:07 PM CDT | Heat Advisory | ILX | 5 days |
| Aug 23, 11:18 AM CDT | Mesoscale Discussion | SPC | 117 min |
| Aug 24, 3:00 AM CDT | Excessive Heat Warning | ILX | 64 hr |
| Aug 26, 2:09 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 27, 1:09 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 1, 2:23 PM CDT | Flash Flood Watch | ILX | 17 hr |
| Sep 5, 2:38 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Sep 5, 3:43 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 5, 5:11 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Sep 5, 7:52 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Sep 9, 1:48 PM CDT | Flash Flood Watch | ILX | 30 hr |
| Sep 10, 1:48 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Sep 10, 3:24 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 17, 1:26 AM CDT | Dense Fog Advisory | ILX | 8 hr |
| Sep 20, 4:22 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Oct 2, 11:59 AM CDT | Mesoscale Discussion | SPC | 91 min |
| Oct 4, 2:41 PM CDT | Frost Advisory | ILX | 16 hr |
| Oct 7, 1:44 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 13, 1:08 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 13, 2:24 PM CDT | Tornado Watch | SPC | 7 hr |
| Oct 13, 3:40 PM CDT | Tornado Warning | ILX | 20 min |
| Oct 13, 3:42 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Oct 18, 2:51 AM CDT | Frost Advisory | ILX | 29 hr |
| Oct 30, 3:00 PM CDT | Freeze Warning | ILX | 42 hr |
| Nov 16, 3:40 AM CST | Winter Weather Advisory | ILX | 18 hr |
| Nov 24, 3:40 AM CST | Wind Advisory | ILX | 11 hr |
| Dec 5, 12:44 AM CST | Dense Fog Advisory | ILX | 9 hr |
| Dec 14, 7:29 AM CST | Dense Fog Advisory | ILX | 4 hr |
| Dec 23, 2:16 PM CST | Winter Weather Advisory | ILX | 19 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 archive20132015
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.