Alert archive / Illinois / Johnson County / 2024
Weather alerts in Johnson County, Illinois, April 2024
26 weather alerts in April 2024, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 26
- Warnings
- 11
- Watches
- 4
- Advisories
- 5
- Busiest day
- April 2, 202411 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 |
|---|---|---|---|
| Apr 2, 1:16 AM CDT | Mesoscale Discussion | SPC | 89 min |
| Apr 2, 2:00 AM CDT | Tornado Watch | SPC | 5 hr |
| Apr 2, 3:59 AM CDT | Severe Thunderstorm Warning | PAH | 46 min |
| Apr 2, 4:35 AM CDT | Severe Thunderstorm Warning | PAH | 40 min |
| Apr 2, 4:49 AM CDT | Tornado Warning | PAH | 26 min |
| Apr 2, 4:59 AM CDT | Tornado Warning | PAH | 26 min |
| Apr 2, 5:11 AM CDT | Severe Thunderstorm Warning | PAH | 64 min |
| Apr 2, 11:48 AM CDT | Mesoscale Discussion | SPC | 117 min |
| Apr 2, 12:08 PM CDT | Tornado Watch | SPC | 6 hr |
| Apr 2, 12:30 PM CDT | Severe Thunderstorm Warning | PAH | 30 min |
| Apr 2, 12:55 PM CDT | Severe Thunderstorm Warning | PAH | 16 min |
| Apr 5, 2:14 AM CDT | Frost Advisory | PAH | 30 hr |
| Apr 7, 2:12 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 8, 4:19 AM CDT | Dense Fog Advisory | PAH | 5 hr |
| Apr 18, 12:56 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Apr 18, 3:09 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 18, 4:17 PM CDT | Severe Thunderstorm Warning | PAH | 28 min |
| Apr 18, 4:31 PM CDT | Severe Thunderstorm Warning | PAH | 44 min |
| Apr 18, 4:48 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Apr 18, 5:11 PM CDT | Severe Thunderstorm Warning | PAH | 49 min |
| Apr 18, 5:52 PM CDT | Severe Thunderstorm Warning | PAH | 23 min |
| Apr 18, 6:12 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Apr 18, 6:36 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 21, 2:24 AM CDT | Frost Advisory | PAH | 30 hr |
| Apr 24, 12:34 AM CDT | Dense Fog Advisory | PAH | 7 hr |
| Apr 29, 11:46 PM CDT | Dense Fog Advisory | PAH | 9 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 | 9 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 2 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 6 |
| Cold | |
| Frost Advisory | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20232025
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.