Alert archive / Illinois / Scott County
Weather alerts in Scott County, Illinois, 2015
105 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Scott County and its neighbors
Each county as a circle sized by its count in 2015. Tap one for its archive.
- Alerts
- 105
- Warnings
- 19
- Watches
- 23
- Advisories
- 30
- Busiest month
- July29 alerts
- Busiest day
- July 11, 201510 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 1 tornado warnings covering Scott County in 2015 had a tornado report inside them.
Scott County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 8 | 2 | 75% | 1 | 100% | 24 min |
| Flash flood warnings | 3 | 1 | 67% | 0 |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Lincoln, IL: tornado warnings | 20 | 4 | 80% | 16 | 31% | 3 min |
| NWS Lincoln, IL: severe thunderstorm warnings | 150 | 72 | 52% | 307 | 67% | 22 min |
| NWS Lincoln, IL: flash flood warnings | 78 | 25 | 68% | 55 | 80% | 144 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, 3:13 AM CST | Wind Chill Advisory | ILX | 57 hr |
| Jan 10, 3:17 PM CST | Winter Weather Advisory | ILX | 42 hr |
| Jan 30, 12:01 PM CST | Winter Storm Watch | ILX | 16 hr |
| Jan 31, 4:04 AM CST | Winter Weather Advisory | ILX | 44 hr |
| Feb 4, 3:31 AM CST | Winter Weather Advisory | ILX | 13 hr |
| Feb 15, 3:14 AM CST | Winter Weather Advisory | ILX | 38 hr |
| Feb 17, 3:19 PM CST | Wind Chill Advisory | ILX | 45 hr |
| Feb 20, 4:02 AM CST | Winter Weather Advisory | ILX | 11 hr |
| Feb 20, 2:42 PM CST | Winter Storm Warning | ILX | 19 hr |
| Feb 22, 3:12 AM CST | Wind Chill Advisory | ILX | 30 hr |
| Feb 25, 3:29 AM CST | Winter Weather Advisory | ILX | 30 hr |
| Feb 26, 2:51 PM CST | Wind Chill Advisory | ILX | 19 hr |
| Feb 28, 3:09 AM CST | Winter Weather Advisory | ILX | 39 hr |
| Mar 2, 3:06 PM CST | Winter Weather Advisory | ILX | 19 hr |
| Mar 13, 10:50 PM CDT | Dense Fog Advisory | ILX | 8 hr |
| Apr 7, 6:48 AM CDT | Dense Fog Advisory | ILX | 4 hr |
| Apr 8, 1:05 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 8, 2:43 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Apr 9, 1:48 PM CDT | Tornado Watch | SPC | 9 hr |
| Apr 9, 3:12 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Apr 9, 6:01 PM CDT | Severe Thunderstorm Warning | ILX | 44 min |
| Apr 22, 3:04 PM CDT | Frost Advisory | ILX | 17 hr |
| May 9, 6:39 AM CDT | Dense Fog Advisory | ILX | 2 hr |
| May 10, 3:52 PM CDT | Mesoscale Discussion | SPC | 68 min |
| May 10, 6:30 PM CDT | Mesoscale Discussion | SPC | 90 min |
| May 15, 2:13 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 24, 5:34 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 7, 7:48 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 7, 9:52 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Jun 8, 2:32 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Jun 11, 8:13 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 11, 8:25 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 13, 11:37 AM CDT | River Flood Warning | LSX | 54 days |
| Jun 13, 2:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 8:06 PM CDT | Severe Thunderstorm Warning | ILX | 54 min |
| Jun 20, 3:49 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 20, 6:33 PM CDT | Mesoscale Discussion | SPC | 57 min |
| Jun 20, 9:34 PM CDT | Severe Thunderstorm Warning | ILX | 56 min |
| Jun 20, 10:12 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Jun 22, 9:41 PM CDT | Mesoscale Discussion | SPC | 64 min |
| Jun 23, 3:25 PM CDT | Flash Flood Watch | ILX | 44 hr |
| Jun 24, 9:26 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 24, 11:23 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 25, 2:02 AM CDT | Mesoscale Discussion | SPC | 118 min |
| Jun 25, 3:55 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 26, 4:05 AM CDT | Flash Flood Watch | ILX | 18 hr |
| Jun 28, 1:36 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 28, 3:03 PM CDT | Tornado Watch | SPC | 8 hr |
| Jun 28, 5:56 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jul 7, 2:46 PM CDT | Flash Flood Watch | ILX | 39 hr |
| Jul 11, 12:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jul 11, 1:39 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 11, 2:13 PM CDT | Severe Thunderstorm Warning | ILX | 32 min |
| Jul 11, 2:35 PM CDT | Severe Thunderstorm Warning | ILX | 25 min |
| Jul 11, 2:57 PM CDT | Severe Thunderstorm Warning | ILX | 48 min |
| Jul 11, 3:14 PM CDT | Areal Flood Advisory | ILX | 3 hr |
| Jul 11, 3:32 PM CDT | Special Weather Statement | ILX | 28 min |
| Jul 11, 4:10 PM CDT | Areal Flood Advisory | ILX | 3 hr |
| Jul 11, 5:14 PM CDT | Flash Flood Warning | ILX | 3 hr |
| Jul 11, 6:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jul 11, 7:29 PM CDT | Severe Thunderstorm Warning | ILX | 31 min |
| Jul 11, 7:59 PM CDT | Flash Flood Warning | ILX | 6 hr |
| Jul 11, 8:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 11, 9:57 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jul 12, 2:00 AM CDT | Areal Flood Warning | ILX | 9 hr |
| Jul 12, 3:14 PM CDT | Heat Advisory | ILX | 29 hr |
| Jul 13, 4:01 PM CDT | Tornado Watch | SPC | 7 hr |
| Jul 13, 4:33 PM CDT | Mesoscale Discussion | SPC | 57 min |
| Jul 13, 6:46 PM CDT | Severe Thunderstorm Warning | ILX | 44 min |
| Jul 16, 4:55 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 16, 7:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jul 16, 9:55 PM CDT | Mesoscale Discussion | SPC | 110 min |
| Jul 17, 10:16 AM CDT | Heat Advisory | ILX | 33 hr |
| Jul 18, 11:19 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 19, 3:19 AM CDT | Flash Flood Warning | ILX | 6 hr |
| Jul 19, 9:13 AM CDT | Areal Flood Warning | ILX | 6 hr |
| Jul 27, 3:01 PM CDT | Heat Advisory | ILX | 29 hr |
| Jul 29, 1:31 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 10, 4:42 AM CDT | Dense Fog Advisory | ILX | 4 hr |
| Aug 18, 12:49 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Aug 18, 1:15 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 18, 3:16 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Aug 18, 4:19 PM CDT | Special Weather Statement | ILX | 41 min |
| Sep 10, 8:22 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Sep 11, 2:39 AM CDT | Areal Flood Advisory | ILX | 4 hr |
| Sep 18, 5:20 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 15, 2:56 PM CDT | Freeze Watch | ILX | 12 hr |
| Oct 16, 2:45 AM CDT | Freeze Warning | ILX | 30 hr |
| Oct 17, 2:33 PM CDT | Freeze Warning | ILX | 18 hr |
| Nov 1, 5:58 AM CST | Dense Fog Advisory | ILX | 3 hr |
| Nov 2, 7:59 PM CST | Dense Fog Advisory | ILX | 14 hr |
| Nov 3, 7:16 PM CST | Dense Fog Advisory | ILX | 15 hr |
| Nov 10, 3:41 PM CST | Wind Advisory | ILX | 50 hr |
| Nov 11, 2:24 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Nov 11, 3:20 PM CST | Tornado Watch | SPC | 6 hr |
| Nov 16, 3:08 AM CST | Flood Watch | ILX | 51 hr |
| Dec 4, 5:53 PM CST | Dense Fog Advisory | ILX | 18 hr |
| Dec 22, 11:29 AM CST | River Flood Warning | LSX | 34 days |
| Dec 23, 12:42 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 23, 1:55 PM CST | Tornado Watch | SPC | 4 hr |
| Dec 23, 2:10 PM CST | Wind Advisory | ILX | 9 hr |
| Dec 23, 3:24 PM CST | Mesoscale Discussion | SPC | 96 min |
| Dec 23, 4:16 PM CST | Tornado Warning | ILX | 29 min |
| Dec 25, 3:27 AM CST | Flash Flood Watch | ILX | 5 days |
| Dec 27, 3:15 PM CST | Wind Advisory | ILX | 26 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 archive20142016
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.