Alert archive / Illinois / Johnson County / 2023
Weather alerts in Johnson County, Illinois, August 2023
20 weather alerts in August 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 20
- Warnings
- 5
- Watches
- 5
- Advisories
- 6
- Busiest day
- August 5, 20234 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 |
|---|---|---|---|
| Aug 2, 1:40 AM CDT | Flood Watch | PAH | 58 hr |
| Aug 2, 7:58 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 2, 11:53 PM CDT | Severe Thunderstorm Warning | PAH | 52 min |
| Aug 3, 12:29 AM CDT | Severe Thunderstorm Warning | PAH | 46 min |
| Aug 5, 4:03 AM CDT | Heat Advisory | PAH | 14 hr |
| Aug 5, 4:06 AM CDT | Severe Thunderstorm Warning | PAH | 24 min |
| Aug 5, 6:11 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 5, 6:41 PM CDT | Severe Thunderstorm Warning | PAH | 23 min |
| Aug 7, 1:15 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 7, 3:19 AM CDT | Lake Wind Advisory | PAH | 14 hr |
| Aug 9, 10:52 AM CDT | Flood Watch | PAH | 13 hr |
| Aug 10, 9:19 PM CDT | Dense Fog Advisory | PAH | 11 hr |
| Aug 13, 1:34 PM CDT | Flood Watch | PAH | 20 hr |
| Aug 14, 2:38 AM CDT | Mesoscale Discussion | SPC | 97 min |
| Aug 18, 2:47 AM CDT | Excessive Heat Watch | PAH | 24 hr |
| Aug 19, 2:50 AM CDT | Excessive Heat Warning | PAH | 8 days |
| Aug 22, 3:26 AM CDT | Dense Fog Advisory | PAH | 5 hr |
| Aug 23, 1:44 AM CDT | Dense Fog Advisory | PAH | 6 hr |
| Aug 26, 2:23 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 27, 4:04 AM CDT | Areal Flood Advisory | PAH | 3 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 | 4 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 4 |
| Flooding | |
| Flood Watch | 3 |
| Areal Flood Advisory | 1 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 1 |
| Wind and dust | |
| Lake Wind Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
Nearby
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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.