Alert archive / Illinois / Peoria County
Weather alerts in Peoria County, Illinois, 2020
121 weather alerts in 2020, 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 2020. Tap one for its archive.
- Alerts
- 121
- Warnings
- 41
- Watches
- 22
- Advisories
- 31
- Busiest month
- July22 alerts
- Busiest day
- May 26, 20207 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 2020 had a tornado report inside them; 3 of 4 tornado reports fell inside a warning, on average 3 minutes after it went out.
Peoria County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 1 | 67% | 4 | 75% | 3 min |
| Severe thunderstorm warnings | 22 | 15 | 32% | 60 | 73% | 23 min |
| Flash flood warnings | 7 | 4 | 43% | 2 | 50% | 19 min |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Lincoln, IL: tornado warnings | 21 | 6 | 71% | 20 | 65% | 5 min |
| NWS Lincoln, IL: severe thunderstorm warnings | 137 | 64 | 53% | 368 | 73% | 23 min |
| NWS Lincoln, IL: flash flood warnings | 35 | 17 | 51% | 40 | 65% | 75 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 8, 2:58 PM CST | Flood Watch | ILX | 69 hr |
| Jan 9, 4:18 AM CST | Wind Advisory | ILX | 14 hr |
| Jan 9, 2:17 PM CST | Winter Storm Watch | ILX | 13 hr |
| Jan 10, 2:55 AM CST | Winter Weather Advisory | ILX | 44 hr |
| Jan 10, 11:27 AM CST | River Flood Warning | ILX | 15 days |
| Jan 11, 3:10 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Jan 16, 3:10 PM CST | Winter Weather Advisory | ILX | 39 hr |
| Jan 18, 2:38 PM CST | Wind Chill Advisory | ILX | 21 hr |
| Jan 24, 6:21 AM CST | Dense Fog Advisory | ILX | 9 hr |
| Feb 4, 3:28 PM CST | Winter Weather Advisory | ILX | 45 hr |
| Feb 11, 2:40 PM CST | Winter Weather Advisory | ILX | 43 hr |
| Feb 13, 2:11 PM CST | Wind Chill Advisory | ILX | 19 hr |
| Feb 17, 5:44 PM CST | Dense Fog Advisory | ILX | 8 hr |
| Feb 24, 3:17 AM CST | Winter Storm Watch | ILX | 24 hr |
| Feb 25, 3:06 AM CST | Winter Weather Advisory | ILX | 35 hr |
| Mar 5, 5:59 PM CST | Wind Advisory | ILX | 15 hr |
| Mar 12, 6:39 AM CDT | Dense Fog Advisory | ILX | 5 hr |
| Mar 25, 1:51 AM CDT | Dense Fog Advisory | ILX | 9 hr |
| Mar 28, 2:45 PM CDT | Tornado Watch | SPC | 6 hr |
| Mar 28, 3:21 PM CDT | Wind Advisory | ILX | 28 hr |
| Mar 28, 5:21 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Mar 28, 8:06 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Mar 28, 8:41 PM CDT | Tornado Watch | SPC | 3 hr |
| Mar 28, 8:56 PM CDT | Tornado Warning | ILX | 28 min |
| Apr 8, 1:46 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Apr 8, 3:08 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 8, 3:53 PM CDT | Severe Thunderstorm Warning | ILX | 52 min |
| Apr 8, 4:08 PM CDT | Severe Thunderstorm Warning | ILX | 30 min |
| Apr 9, 3:28 AM CDT | Wind Advisory | ILX | 16 hr |
| Apr 12, 3:39 AM CDT | Wind Advisory | ILX | 35 hr |
| Apr 16, 3:31 AM CDT | Winter Storm Warning | ILX | 30 hr |
| Apr 17, 12:41 PM CDT | Freeze Warning | ILX | 20 hr |
| Apr 24, 2:13 AM CDT | Dense Fog Advisory | ILX | 7 hr |
| Apr 25, 1:52 AM CDT | Flood Watch | ILX | 23 hr |
| Apr 28, 3:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Apr 28, 3:51 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 28, 4:28 PM CDT | Severe Thunderstorm Warning | ILX | 47 min |
| Apr 28, 5:07 PM CDT | Severe Thunderstorm Warning | ILX | 38 min |
| Apr 30, 10:52 AM CDT | River Flood Warning | ILX | 40 days |
| May 7, 3:12 AM CDT | Freeze Watch | ILX | 24 hr |
| May 8, 3:01 AM CDT | Freeze Warning | ILX | 29 hr |
| May 10, 3:12 PM CDT | Frost Advisory | ILX | 12 hr |
| May 14, 11:55 AM CDT | Flash Flood Watch | ILX | 16 hr |
| May 14, 5:19 PM CDT | Mesoscale Discussion | SPC | 116 min |
| May 14, 6:15 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 14, 10:20 PM CDT | Severe Thunderstorm Warning | ILX | 55 min |
| May 15, 1:06 AM CDT | Mesoscale Discussion | SPC | 114 min |
| May 16, 9:06 PM CDT | Flash Flood Watch | ILX | 34 hr |
| May 23, 11:29 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 23, 12:33 PM CDT | Tornado Watch | SPC | 8 hr |
| May 23, 2:51 PM CDT | Mesoscale Discussion | SPC | 84 min |
| May 25, 7:48 PM CDT | Special Weather Statement | ILX | 57 min |
| May 25, 7:54 PM CDT | Severe Thunderstorm Warning | ILX | 66 min |
| May 25, 8:35 PM CDT | Severe Thunderstorm Warning | ILX | 55 min |
| May 25, 8:41 PM CDT | Flash Flood Warning | ILX | 4 hr |
| May 25, 8:59 PM CDT | Severe Thunderstorm Warning | ILX | 46 min |
| May 25, 9:11 PM CDT | Flash Flood Warning | ILX | 4 hr |
| May 26, 12:23 AM CDT | Areal Flood Warning | ILX | 12 hr |
| May 28, 4:28 PM CDT | Special Weather Statement | ILX | 47 min |
| May 28, 4:46 PM CDT | Tornado Warning | ILX | 15 min |
| Jun 3, 9:52 AM CDT | Mesoscale Discussion | SPC | 113 min |
| Jun 3, 10:34 AM CDT | Special Weather Statement | ILX | 41 min |
| Jun 3, 6:37 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jun 9, 2:20 AM CDT | Wind Advisory | ILX | 18 hr |
| Jun 20, 6:06 PM CDT | Severe Thunderstorm Warning | ILX | 14 min |
| Jun 22, 12:48 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 22, 1:36 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 22, 3:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 22, 6:26 PM CDT | Flash Flood Warning | ILX | 3 hr |
| Jul 9, 3:39 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 9, 7:38 PM CDT | Severe Thunderstorm Warning | ILX | 67 min |
| Jul 9, 8:41 PM CDT | Severe Thunderstorm Warning | ILX | 45 min |
| Jul 11, 9:36 AM CDT | Mesoscale Discussion | SPC | 114 min |
| Jul 11, 3:58 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 11, 7:17 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jul 11, 7:38 PM CDT | Severe Thunderstorm Warning | ILX | 37 min |
| Jul 11, 7:44 PM CDT | Severe Thunderstorm Warning | ILX | 46 min |
| Jul 11, 8:07 PM CDT | Severe Thunderstorm Warning | ILX | 38 min |
| Jul 11, 8:27 PM CDT | Severe Thunderstorm Warning | ILX | 49 min |
| Jul 15, 12:51 PM CDT | Severe Thunderstorm Warning | ILX | 54 min |
| Jul 15, 2:10 PM CDT | Tornado Watch | SPC | 7 hr |
| Jul 15, 2:13 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Jul 15, 2:15 PM CDT | Severe Thunderstorm Warning | ILX | 60 min |
| Jul 15, 2:30 PM CDT | Flash Flood Warning | ILX | 3 hr |
| Jul 15, 5:17 PM CDT | Flash Flood Warning | ILX | 5 hr |
| Jul 15, 6:52 PM CDT | Flash Flood Warning | ILX | 7 hr |
| Jul 15, 9:03 PM CDT | Areal Flood Warning | ILX | 12 hr |
| Jul 17, 3:39 AM CDT | Heat Advisory | ILX | 40 hr |
| Jul 19, 9:21 AM CDT | Special Weather Statement | ILX | 39 min |
| Jul 19, 10:12 AM CDT | Mesoscale Discussion | SPC | 93 min |
| Jul 26, 2:30 AM CDT | Heat Advisory | ILX | 16 hr |
| Aug 10, 10:42 AM CDT | Mesoscale Discussion | SPC | 93 min |
| Aug 10, 11:26 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 10, 1:33 PM CDT | Severe Thunderstorm Warning | ILX | 57 min |
| Aug 10, 2:15 PM CDT | Severe Thunderstorm Warning | ILX | 60 min |
| Aug 23, 1:17 PM CDT | Special Weather Statement | ILX | 13 min |
| Sep 6, 2:53 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 6, 5:30 AM CDT | Mesoscale Discussion | SPC | 90 min |
| Sep 6, 7:14 AM CDT | Special Weather Statement | ILX | 46 min |
| Sep 6, 8:15 AM CDT | Special Weather Statement | ILX | 45 min |
| Sep 6, 9:09 AM CDT | Severe Thunderstorm Warning | ILX | 36 min |
| Sep 8, 2:19 AM CDT | Flash Flood Warning | ILX | 3 hr |
| Oct 4, 2:19 AM CDT | Frost Advisory | ILX | 30 hr |
| Oct 14, 4:10 AM CDT | Wind Advisory | ILX | 15 hr |
| Oct 15, 3:15 AM CDT | Freeze Warning | ILX | 30 hr |
| Oct 16, 2:29 PM CDT | Fire Weather Watch | ILX | 12 hr |
| Oct 16, 2:29 PM CDT | Red Flag Warning | ILX | 30 hr |
| Oct 16, 3:03 PM CDT | Wind Advisory | ILX | 28 hr |
| Oct 22, 12:58 AM CDT | Dense Fog Advisory | ILX | 6 hr |
| Nov 1, 9:54 AM CST | Wind Advisory | ILX | 4 hr |
| Nov 10, 2:46 AM CST | Wind Advisory | ILX | 17 hr |
| Nov 10, 11:22 AM CST | Severe Thunderstorm Watch | SPC | 7 hr |
| Nov 10, 1:48 PM CST | Mesoscale Discussion | SPC | 87 min |
| Nov 10, 2:05 PM CST | Tornado Watch | SPC | 6 hr |
| Nov 10, 2:41 PM CST | Severe Thunderstorm Warning | ILX | 49 min |
| Nov 10, 2:51 PM CST | Tornado Warning | ILX | 24 min |
| Nov 10, 3:25 PM CST | Severe Thunderstorm Warning | ILX | 50 min |
| Nov 14, 3:20 AM CST | Wind Advisory | ILX | 38 hr |
| Nov 18, 2:43 PM CST | Wind Advisory | ILX | 27 hr |
| Dec 23, 3:05 AM CST | Wind Advisory | ILX | 24 hr |
| Dec 28, 3:02 PM CST | Winter Weather Advisory | ILX | 37 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 | 22 |
| Tornado Warning | 3 |
| Severe Thunderstorm Watch | 9 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 20 |
| Special Weather Statement | 7 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 7 |
| River Flood Warning | 2 |
| Flash Flood Watch | 2 |
| Flood Watch | 2 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 6 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 3 |
| Freeze Watch | 1 |
| Frost Advisory | 2 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 13 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.