Alert archive / Illinois / Johnson County
Weather alerts in Johnson County, Illinois, 2026
115 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Johnson County and its neighbors
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Alerts
- 115
- Warnings
- 32
- Watches
- 21
- Advisories
- 26
- Busiest month
- July25 alerts
- Busiest day
- April 27, 202610 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 8, 4:10 AM CST | Dense Fog Advisory | PAH | 5 hr |
| Jan 8, 7:15 PM CST | Wind Advisory | PAH | 8 hr |
| Jan 21, 2:46 AM CST | Winter Storm Watch | PAH | 33 hr |
| Jan 21, 5:27 AM CST | Winter Weather Advisory | PAH | 5 hr |
| Jan 22, 11:58 AM CST | Winter Storm Warning | PAH | 3 days |
| Jan 22, 12:00 PM CST | Cold Weather Advisory | PAH | 4 days |
| Jan 24, 10:12 AM CST | Extreme Cold Warning | PAH | 72 hr |
| Jan 24, 11:00 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 29, 12:58 PM CST | Cold Weather Advisory | PAH | 47 hr |
| Feb 15, 6:32 PM CST | Dense Fog Advisory | PAH | 16 hr |
| Feb 19, 11:34 AM CST | Mesoscale Discussion | SPC | 116 min |
| Mar 4, 1:28 PM CST | Mesoscale Discussion | SPC | 3 hr |
| Mar 4, 2:32 PM CST | Severe Thunderstorm Watch | SPC | 8 hr |
| Mar 4, 5:30 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Mar 4, 10:13 PM CST | Special Weather Statement | PAH | 47 min |
| Mar 4, 10:22 PM CST | Severe Thunderstorm Warning | PAH | 53 min |
| Mar 4, 10:51 PM CST | Mesoscale Discussion | SPC | 114 min |
| Mar 4, 11:43 PM CST | Areal Flood Advisory | PAH | 8 hr |
| Mar 5, 12:49 AM CST | Flash Flood Warning | PAH | 7 hr |
| Mar 5, 7:51 AM CST | Areal Flood Warning | PAH | 3 hr |
| Mar 7, 2:44 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Mar 7, 5:40 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Mar 7, 7:17 AM CST | Severe Thunderstorm Warning | PAH | 28 min |
| Mar 10, 11:16 PM CDT | Wind Advisory | PAH | 17 hr |
| Mar 14, 10:45 AM CDT | Wind Advisory | PAH | 26 hr |
| Mar 15, 10:45 AM CDT | High Wind Warning | PAH | 8 hr |
| Mar 15, 12:59 PM CDT | Wind Advisory | PAH | 18 hr |
| Mar 15, 3:27 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Mar 15, 3:57 PM CDT | Tornado Watch | SPC | 7 hr |
| Mar 15, 6:52 PM CDT | Severe Thunderstorm Warning | PAH | 38 min |
| Mar 15, 7:34 PM CDT | Tornado Warning | PAH | 15 min |
| Mar 15, 7:36 PM CDT | Tornado Warning | PAH | 39 min |
| Mar 15, 7:56 PM CDT | Tornado Warning | PAH | 28 min |
| Mar 27, 1:41 AM CDT | Freeze Warning | PAH | 31 hr |
| Mar 29, 1:31 PM CDT | Red Flag Warning | PAH | 5 hr |
| Apr 2, 1:02 AM CDT | Wind Advisory | PAH | 18 hr |
| Apr 2, 3:48 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Apr 16, 2:03 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 21, 2:10 AM CDT | Lake Wind Advisory | PAH | 14 hr |
| Apr 27, 4:07 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 27, 6:53 AM CDT | Severe Thunderstorm Warning | PAH | 52 min |
| Apr 27, 7:32 AM CDT | Severe Thunderstorm Warning | PAH | 21 min |
| Apr 27, 7:36 AM CDT | Mesoscale Discussion | SPC | 84 min |
| Apr 27, 9:16 AM CDT | Severe Thunderstorm Warning | PAH | 44 min |
| Apr 27, 1:44 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 27, 2:46 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 27, 3:46 PM CDT | Special Weather Statement | PAH | 29 min |
| Apr 27, 3:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Apr 27, 6:18 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Apr 27, 9:48 PM CDT | Tornado Watch | SPC | 7 hr |
| May 4, 1:56 AM CDT | Lake Wind Advisory | PAH | 18 hr |
| May 16, 2:13 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 19, 11:35 AM CDT | Flood Watch | PAH | 18 hr |
| May 19, 12:31 PM CDT | Mesoscale Discussion | SPC | 119 min |
| May 31, 4:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jun 1, 6:01 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 1, 8:15 AM CDT | Severe Thunderstorm Warning | PAH | 17 min |
| Jun 8, 1:23 AM CDT | Flood Watch | PAH | 44 hr |
| Jun 8, 1:39 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 9, 12:42 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jun 12, 2:32 AM CDT | Special Weather Statement | PAH | 43 min |
| Jun 17, 12:51 AM CDT | Wind Advisory | PAH | 19 hr |
| Jun 21, 10:06 AM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 25, 1:36 AM CDT | Flood Watch | PAH | 3 days |
| Jun 25, 8:39 PM CDT | Special Weather Statement | PAH | 36 min |
| Jun 25, 8:44 PM CDT | Severe Thunderstorm Warning | PAH | 24 min |
| Jun 26, 4:52 AM CDT | Flash Flood Warning | PAH | 3 hr |
| Jun 26, 3:36 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 26, 3:57 PM CDT | Tornado Watch | SPC | 3 hr |
| Jun 27, 9:39 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 27, 11:00 AM CDT | Heat Advisory | PAH | 33 hr |
| Jun 27, 11:00 AM CDT | Extreme Heat Watch | PAH | 24 hr |
| Jun 27, 12:56 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 27, 12:59 PM CDT | Severe Thunderstorm Warning | PAH | 46 min |
| Jun 27, 3:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 28, 11:28 AM CDT | Extreme Heat Warning | PAH | 5 days |
| Jul 2, 10:16 AM CDT | Heat Advisory | PAH | 58 hr |
| Jul 2, 6:32 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Jul 3, 7:50 PM CDT | Severe Thunderstorm Warning | PAH | 19 min |
| Jul 4, 3:59 PM CDT | Severe Thunderstorm Warning | PAH | 32 min |
| Jul 4, 4:56 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 8, 10:34 AM CDT | Flood Watch | PAH | 4 days |
| Jul 8, 11:48 AM CDT | Areal Flood Advisory | PAH | 67 min |
| Jul 8, 2:54 PM CDT | Areal Flood Advisory | PAH | 62 min |
| Jul 9, 12:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 9, 6:01 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 10, 12:31 AM CDT | Flash Flood Warning | PAH | 6 hr |
| Jul 10, 6:42 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 10, 7:26 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jul 10, 10:10 PM CDT | Areal Flood Advisory | PAH | 3 hr |
| Jul 10, 11:01 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Jul 10, 11:09 PM CDT | Flash Flood Warning | PAH | 9 hr |
| Jul 11, 6:36 AM CDT | Areal Flood Warning | PAH | 8 hr |
| Jul 17, 11:01 AM CDT | Heat Advisory | PAH | 4 days |
| Jul 20, 8:38 AM CDT | Extreme Heat Warning | PAH | 34 hr |
| Jul 21, 12:15 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jul 21, 1:18 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 24, 12:18 PM CDT | Heat Advisory | PAH | 35 hr |
| Jul 25, 11:30 PM CDT | Extreme Heat Warning | PAH | 68 hr |
| Jul 25, 11:44 PM CDT | Heat Advisory | PAH | 25 hr |
| Jul 26, 5:14 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 9, 12:29 AM CDT | Heat Advisory | PAH | 4 days |
| Aug 10, 12:50 AM CDT | Extreme Heat Warning | PAH | 7 days |
| Aug 12, 4:33 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Aug 12, 8:34 PM CDT | Special Weather Statement | PAH | 56 min |
| Aug 12, 9:04 PM CDT | Severe Thunderstorm Warning | PAH | 41 min |
| Aug 19, 8:23 PM CDT | Flood Watch | PAH | 11 hr |
| Aug 19, 8:52 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Aug 19, 9:42 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 19, 10:57 PM CDT | Severe Thunderstorm Warning | PAH | 36 min |
| Aug 30, 12:20 PM CDT | Heat Advisory | PAH | 47 hr |
| Aug 30, 12:20 PM CDT | Extreme Heat Watch | PAH | 10 hr |
| Sep 1, 11:46 AM CDT | Extreme Heat Warning | PAH | 4 days |
| Sep 8, 12:44 PM CDT | Heat Advisory | PAH | 30 hr |
| Sep 13, 11:12 AM CDT | Heat Advisory | PAH | 7 days |
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 archive2025
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.