Alert archive / Illinois / Peoria County
Weather alerts in Peoria County, Illinois, 2015
139 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Peoria County and its neighbors
Each county as a circle sized by its count in 2015. Tap one for its archive.
- Alerts
- 139
- Warnings
- 41
- Watches
- 24
- Advisories
- 34
- Busiest month
- June43 alerts
- Busiest day
- April 9, 20158 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 3 tornado warnings covering Peoria County in 2015 had a tornado report inside them; 1 of 2 tornado reports fell inside a warning, on average 0 minutes after it went out.
Peoria County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 1 | 67% | 2 | 50% | 0 min |
| Severe thunderstorm warnings | 18 | 14 | 22% | 35 | 86% | 30 min |
| Flash flood warnings | 10 | 3 | 70% | 4 | 100% | 65 min |
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 4, 3:14 AM CST | Wind Chill Advisory | ILX | 33 hr |
| Jan 4, 8:09 PM CST | Winter Weather Advisory | ILX | 30 hr |
| Jan 5, 2:04 PM CST | Winter Storm Warning | ILX | 12 hr |
| Jan 5, 6:29 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Jan 6, 3:13 AM CST | Wind Chill Warning | ILX | 57 hr |
| Jan 8, 2:39 PM CST | Wind Chill Advisory | ILX | 43 hr |
| Jan 8, 9:51 PM CST | Winter Weather Advisory | ILX | 13 hr |
| Jan 30, 12:01 PM CST | Winter Storm Watch | ILX | 16 hr |
| Jan 31, 4:04 AM CST | Winter Storm Warning | ILX | 44 hr |
| Jan 31, 10:13 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 4, 3:31 AM CST | Winter Weather Advisory | ILX | 13 hr |
| Feb 4, 7:34 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 14, 3:45 AM CST | Wind Chill Advisory | ILX | 29 hr |
| Feb 17, 3:19 PM CST | Wind Chill Advisory | ILX | 45 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 |
| Apr 7, 6:48 AM CDT | Dense Fog Advisory | ILX | 4 hr |
| Apr 8, 4:14 AM CDT | Special Weather Statement | ILX | 61 min |
| Apr 8, 4:30 AM CDT | Severe Thunderstorm Warning | ILX | 16 min |
| Apr 9, 1:03 PM CDT | Special Weather Statement | ILX | 57 min |
| Apr 9, 1:29 PM CDT | Severe Thunderstorm Warning | ILX | 46 min |
| Apr 9, 1:37 PM CDT | Tornado Warning | ILX | 38 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, 5:15 PM CDT | Severe Thunderstorm Warning | ILX | 45 min |
| Apr 9, 6:04 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Apr 9, 6:56 PM CDT | Severe Thunderstorm Warning | ILX | 49 min |
| Apr 9, 7:32 PM CDT | Tornado Warning | ILX | 28 min |
| Apr 10, 1:38 PM CDT | Wind Advisory | ILX | 4 hr |
| Apr 21, 3:33 AM CDT | Wind Advisory | ILX | 15 hr |
| Apr 22, 3:04 PM CDT | Freeze Warning | ILX | 17 hr |
| Apr 23, 3:39 PM CDT | Frost Advisory | ILX | 16 hr |
| May 10, 5:17 PM CDT | Mesoscale Discussion | SPC | 88 min |
| May 24, 3:34 PM CDT | Mesoscale Discussion | SPC | 56 min |
| May 24, 5:34 PM CDT | Tornado Watch | SPC | 7 hr |
| May 24, 6:41 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 7, 7:43 AM CDT | Special Weather Statement | ILX | 47 min |
| Jun 7, 7:59 AM CDT | Special Weather Statement | ILX | 46 min |
| Jun 7, 1:52 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Jun 7, 2:36 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 7, 2:51 PM CDT | Severe Thunderstorm Warning | ILX | 24 min |
| Jun 7, 3:26 PM CDT | Severe Thunderstorm Warning | ILX | 64 min |
| Jun 7, 4:12 PM CDT | Severe Thunderstorm Warning | ILX | 33 min |
| Jun 7, 5:34 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jun 7, 7:18 PM CDT | Severe Thunderstorm Warning | ILX | 42 min |
| Jun 7, 7:30 PM CDT | Flash Flood Warning | ILX | 5 hr |
| Jun 8, 2:32 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Jun 10, 3:51 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 10, 8:16 PM CDT | Severe Thunderstorm Warning | ILX | 44 min |
| Jun 10, 8:29 PM CDT | Flash Flood Warning | ILX | 3 hr |
| Jun 10, 10:14 PM CDT | Flash Flood Warning | ILX | 7 hr |
| Jun 10, 10:51 PM CDT | Severe Thunderstorm Warning | ILX | 24 min |
| Jun 10, 11:11 PM CDT | Severe Thunderstorm Warning | ILX | 43 min |
| Jun 11, 3:11 PM CDT | Flash Flood Watch | ILX | 19 hr |
| Jun 11, 5:49 PM CDT | Tornado Watch | SPC | 2 hr |
| Jun 11, 7:53 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Jun 11, 8:13 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 12, 5:27 AM CDT | Areal Flood Advisory | ILX | 3 hr |
| Jun 12, 6:39 AM CDT | Areal Flood Advisory | ILX | 3 hr |
| Jun 12, 7:06 AM CDT | Areal Flood Advisory | ILX | 3 hr |
| Jun 12, 9:35 PM CDT | River Flood Warning | ILX | 49 days |
| Jun 13, 2:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 14, 7:32 PM CDT | Flash Flood Warning | ILX | 6 hr |
| Jun 15, 9:22 AM CDT | Flash Flood Watch | ILX | 14 hr |
| Jun 20, 3:49 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 20, 8:53 PM CDT | Severe Thunderstorm Warning | ILX | 67 min |
| Jun 22, 1:22 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jun 22, 3:56 PM CDT | Tornado Watch | SPC | 9 hr |
| Jun 22, 6:08 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Jun 22, 8:16 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Jun 23, 3:25 PM CDT | Flash Flood Watch | ILX | 44 hr |
| Jun 24, 6:31 PM CDT | Special Weather Statement | ILX | 29 min |
| Jun 24, 9:26 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 25, 2:02 AM CDT | Mesoscale Discussion | SPC | 118 min |
| Jun 26, 4:05 AM CDT | Flash Flood Watch | ILX | 18 hr |
| Jun 26, 10:22 AM CDT | Flash Flood Warning | ILX | 9 hr |
| Jun 28, 6:40 PM CDT | Special Weather Statement | ILX | 50 min |
| Jun 28, 7:01 PM CDT | Severe Thunderstorm Warning | ILX | 44 min |
| Jun 28, 7:39 PM CDT | Flash Flood Warning | ILX | 5 hr |
| 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, 4:02 PM CDT | Flash Flood Watch | ILX | 10 hr |
| Jul 11, 6:46 PM CDT | Areal Flood Advisory | ILX | 3 hr |
| Jul 12, 3:14 PM CDT | Heat Advisory | ILX | 29 hr |
| Jul 13, 9:17 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 13, 3:21 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jul 13, 4:01 PM CDT | Tornado Watch | SPC | 7 hr |
| Jul 13, 6:59 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jul 16, 4:06 AM CDT | Flash Flood Watch | ILX | 21 hr |
| Jul 16, 3:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| 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, 8:27 PM CDT | Severe Thunderstorm Warning | ILX | 48 min |
| Jul 16, 8:48 PM CDT | Flash Flood Warning | ILX | 6 hr |
| Jul 16, 9:00 PM CDT | Tornado Warning | ILX | 30 min |
| Jul 17, 10:16 AM CDT | Heat Advisory | ILX | 33 hr |
| Jul 18, 12:31 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Jul 25, 4:52 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 27, 3:01 PM CDT | Heat Advisory | ILX | 29 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, 1:35 PM CDT | Tornado Watch | SPC | 8 hr |
| Aug 18, 3:53 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 18, 4:51 PM CDT | Severe Thunderstorm Warning | ILX | 39 min |
| Aug 18, 5:19 PM CDT | Severe Thunderstorm Warning | ILX | 29 min |
| Sep 8, 9:52 AM CDT | Mesoscale Discussion | SPC | 113 min |
| Sep 10, 12:47 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Sep 18, 3:07 PM CDT | Flash Flood Warning | ILX | 6 hr |
| Sep 18, 4:40 PM CDT | Flash Flood Warning | ILX | 5 hr |
| Sep 18, 5:51 PM CDT | Flash Flood Warning | ILX | 4 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 |
| Oct 18, 3:15 PM CDT | Fire Weather Watch | ILX | 12 hr |
| Oct 19, 3:24 AM CDT | Red Flag Warning | ILX | 16 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, 3:20 PM CST | Tornado Watch | SPC | 6 hr |
| Nov 11, 6:01 PM CST | Severe Thunderstorm Warning | ILX | 59 min |
| Nov 11, 6:54 PM CST | Severe Thunderstorm Warning | ILX | 66 min |
| Nov 20, 3:16 AM CST | Winter Weather Advisory | ILX | 36 hr |
| Nov 21, 6:28 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Nov 21, 6:32 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 4, 5:53 PM CST | Dense Fog Advisory | ILX | 18 hr |
| Dec 6, 9:24 PM CST | Dense Fog Advisory | ILX | 23 hr |
| Dec 12, 7:07 AM CST | Dense Fog Advisory | ILX | 4 hr |
| 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 24, 9:56 PM CST | River Flood Warning | ILX | 27 days |
| Dec 26, 3:51 PM CST | Winter Storm Watch | ILX | 24 hr |
| Dec 27, 3:15 PM CST | Wind Advisory | ILX | 26 hr |
| Dec 27, 4:09 PM CST | Winter Storm Warning | ILX | 26 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 | 18 |
| Tornado Warning | 3 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 9 |
| Mesoscale Discussion | 34 |
| Special Weather Statement | 6 |
| Flooding | |
| Flash Flood Warning | 10 |
| River Flood Warning | 2 |
| Flash Flood Watch | 7 |
| Areal Flood Advisory | 4 |
| Winter | |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 7 |
| Heat | |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 3 |
| Wind Chill Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 6 |
| Wind and dust | |
| Wind Advisory | 5 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 8 |
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.