Alert archive / Illinois / Knox County
Weather alerts in Knox County, Illinois, 2021
101 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Knox County and its neighbors
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 101
- Warnings
- 23
- Watches
- 12
- Advisories
- 37
- Busiest month
- June17 alerts
- Busiest day
- June 19, 20217 alerts
Over time
By month
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, 6:35 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Jan 1, 6:01 PM CST | Winter Weather Advisory | ILX | 6 hr |
| Jan 2, 3:49 PM CST | Dense Fog Advisory | ILX | 18 hr |
| Jan 3, 2:38 PM CST | Dense Fog Advisory | ILX | 32 hr |
| Jan 5, 3:27 PM CST | Dense Fog Advisory | ILX | 17 hr |
| Jan 6, 2:32 PM CST | Dense Fog Advisory | ILX | 7 hr |
| Jan 24, 3:58 AM CST | Winter Storm Watch | ILX | 11 hr |
| Jan 24, 3:06 PM CST | Winter Storm Warning | ILX | 37 hr |
| Jan 25, 11:47 AM CST | Winter Weather Advisory | ILX | 24 hr |
| Jan 29, 2:48 PM CST | Winter Weather Advisory | ILX | 48 hr |
| Feb 3, 4:03 PM CST | Winter Weather Advisory | ILX | 38 hr |
| Feb 5, 2:01 PM CST | Wind Chill Advisory | ILX | 45 hr |
| Feb 5, 2:01 PM CST | Winter Weather Advisory | ILX | 33 hr |
| Feb 8, 2:10 PM CST | Wind Chill Advisory | ILX | 19 hr |
| Feb 12, 3:03 PM CST | Wind Chill Advisory | ILX | 21 hr |
| Feb 13, 3:15 AM CST | Wind Chill Advisory | ILX | 57 hr |
| Feb 13, 3:10 PM CST | Winter Weather Advisory | ILX | 60 hr |
| Feb 13, 8:35 PM CST | Wind Chill Warning | ILX | 39 hr |
| Feb 28, 6:57 AM CST | Dense Fog Advisory | ILX | 3 hr |
| Mar 10, 3:08 AM CST | Wind Advisory | ILX | 21 hr |
| Mar 16, 12:22 AM CDT | Dense Fog Advisory | ILX | 10 hr |
| Mar 17, 3:16 PM CDT | Wind Advisory | ILX | 28 hr |
| Mar 18, 8:59 AM CDT | River Flood Warning | ILX | 26 hr |
| Mar 29, 3:21 AM CDT | Red Flag Warning | ILX | 17 hr |
| Mar 29, 3:25 AM CDT | Wind Advisory | ILX | 17 hr |
| Apr 10, 10:17 AM CDT | Wind Advisory | ILX | 14 hr |
| Apr 10, 9:42 PM CDT | River Flood Warning | ILX | 3 days |
| Apr 11, 11:33 AM CDT | Areal Flood Advisory | ILX | 4 hr |
| Apr 13, 2:59 PM CDT | Frost Advisory | ILX | 17 hr |
| Apr 14, 2:36 PM CDT | Frost Advisory | ILX | 17 hr |
| Apr 19, 2:27 AM CDT | Freeze Watch | ILX | 12 hr |
| Apr 19, 2:27 PM CDT | Freeze Warning | ILX | 43 hr |
| Apr 21, 2:58 AM CDT | Freeze Warning | ILX | 29 hr |
| Apr 29, 5:52 PM CDT | Special Weather Statement | ILX | 38 min |
| May 3, 2:08 PM CDT | Mesoscale Discussion | SPC | 67 min |
| May 3, 2:47 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 3, 3:31 PM CDT | Special Weather Statement | ILX | 29 min |
| May 3, 5:15 PM CDT | Mesoscale Discussion | SPC | 90 min |
| May 7, 2:08 PM CDT | Frost Advisory | ILX | 18 hr |
| May 9, 8:25 PM CDT | River Flood Warning | ILX | 19 hr |
| May 11, 2:34 PM CDT | Frost Advisory | ILX | 16 hr |
| May 18, 6:19 PM CDT | River Flood Warning | ILX | 71 hr |
| Jun 1, 1:20 AM CDT | Dense Fog Advisory | ILX | 6 hr |
| Jun 18, 9:20 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 18, 10:24 PM CDT | Severe Thunderstorm Warning | ILX | 36 min |
| Jun 18, 11:06 PM CDT | Severe Thunderstorm Warning | ILX | 39 min |
| Jun 18, 11:47 PM CDT | Severe Thunderstorm Warning | ILX | 43 min |
| Jun 18, 11:57 PM CDT | Tornado Warning | ILX | 33 min |
| Jun 19, 12:28 AM CDT | Flash Flood Warning | ILX | 5 hr |
| Jun 19, 2:10 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 20, 10:57 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 20, 8:10 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 20, 9:54 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Jun 24, 10:03 AM CDT | River Flood Warning | ILX | 72 hr |
| Jun 24, 2:28 PM CDT | Flash Flood Watch | ILX | 54 hr |
| Jun 24, 11:47 PM CDT | Tornado Watch | SPC | 4 hr |
| Jun 25, 1:42 AM CDT | Flash Flood Warning | ILX | 6 hr |
| Jun 28, 3:13 AM CDT | Flash Flood Watch | ILX | 40 hr |
| Jun 30, 6:08 PM CDT | Areal Flood Advisory | ILX | 3 hr |
| Jul 7, 2:02 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jul 16, 7:16 AM CDT | River Flood Warning | ILX | 10 hr |
| Jul 24, 3:00 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 27, 2:06 AM CDT | Heat Advisory | ILX | 66 hr |
| Aug 9, 1:54 PM CDT | Heat Advisory | ILX | 29 hr |
| Aug 9, 8:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Aug 10, 3:49 PM CDT | Heat Advisory | ILX | 27 hr |
| Aug 11, 1:20 AM CDT | Mesoscale Discussion | SPC | 115 min |
| Aug 11, 6:26 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 11, 7:00 AM CDT | Special Weather Statement | ILX | 60 min |
| Aug 11, 10:50 AM CDT | Special Weather Statement | ILX | 40 min |
| Aug 11, 7:35 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Aug 12, 3:16 AM CDT | Mesoscale Discussion | SPC | 119 min |
| Aug 23, 2:53 PM CDT | Heat Advisory | ILX | 5 days |
| Aug 24, 7:26 PM CDT | Special Weather Statement | ILX | 64 min |
| Aug 24, 8:00 PM CDT | Special Weather Statement | ILX | 60 min |
| Aug 24, 8:14 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 25, 4:02 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Aug 25, 4:10 PM CDT | Severe Thunderstorm Warning | ILX | 50 min |
| Aug 25, 4:51 PM CDT | Severe Thunderstorm Warning | ILX | 24 min |
| Aug 29, 1:18 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Sep 7, 1:12 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Sep 7, 3:14 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Sep 20, 9:24 PM CDT | Special Weather Statement | ILX | 51 min |
| Sep 20, 10:08 PM CDT | Special Weather Statement | ILX | 52 min |
| Oct 7, 8:41 PM CDT | Dense Fog Advisory | ILX | 13 hr |
| Oct 8, 9:45 PM CDT | Dense Fog Advisory | ILX | 6 hr |
| Oct 11, 9:06 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 11, 3:10 PM CDT | Tornado Watch | SPC | 6 hr |
| Oct 13, 10:54 AM CDT | Special Weather Statement | ILX | 36 min |
| Oct 23, 12:50 PM CDT | Flash Flood Watch | ILX | 56 hr |
| Oct 24, 8:32 PM CDT | River Flood Warning | ILX | 71 hr |
| Oct 31, 8:14 PM CDT | Freeze Warning | ILX | 13 hr |
| Nov 1, 2:41 PM CDT | Freeze Warning | ILX | 18 hr |
| Nov 14, 2:11 AM CST | Wind Advisory | ILX | 8 hr |
| Dec 14, 2:47 PM CST | Wind Advisory | ILX | 37 hr |
| Dec 15, 6:00 PM CST | Severe Thunderstorm Watch | SPC | 6 hr |
| Dec 15, 8:27 PM CST | High Wind Warning | ILX | 7 hr |
| Dec 15, 9:48 PM CST | Mesoscale Discussion | SPC | 87 min |
| Dec 26, 1:13 AM CST | Dense Fog Advisory | ILX | 11 hr |
| Dec 28, 8:59 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Dec 30, 9:28 PM CST | Dense Fog Advisory | ILX | 13 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 archive20202022
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. Rebuilt daily.