Alert archive / Illinois / Johnson County / 2026
Weather alerts in Johnson County, Illinois, July 2026
25 weather alerts in July 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 25
- Warnings
- 7
- Watches
- 5
- Advisories
- 7
- Busiest day
- July 11, 20265 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
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 |
|---|---|---|---|
| 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 |
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 | 2 |
| Severe Thunderstorm Watch | 4 |
| Mesoscale Discussion | 6 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 2 |
| Flood Watch | 1 |
| Areal Flood Advisory | 3 |
| Heat | |
| Extreme Heat Warning | 2 |
| Heat Advisory | 4 |
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. Warning verification from the Mesonet's Cow. Rebuilt daily.