Alert archive / Illinois / Johnson County / 2009
Weather alerts in Johnson County, Illinois, April 2009
21 weather alerts in April 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 21
- Warnings
- 6
- Watches
- 5
- Advisories
- 6
- Busiest day
- April 10, 20095 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, 2:38 PM CDT | Areal Flood Advisory | PAH | 94 min |
| Apr 2, 2:41 PM CDT | Severe Thunderstorm Warning | PAH | 34 min |
| Apr 2, 2:52 PM CDT | Areal Flood Advisory | PAH | 3 hr |
| Apr 3, 12:10 PM CDT | Frost Advisory | PAH | 21 hr |
| Apr 5, 10:50 AM CDT | Mesoscale Discussion | SPC | 115 min |
| Apr 5, 11:44 AM CDT | Tornado Watch | SPC | 6 hr |
| Apr 5, 2:02 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Apr 5, 4:28 PM CDT | Freeze Watch | PAH | 12 hr |
| Apr 6, 3:35 AM CDT | Freeze Watch | PAH | 31 hr |
| Apr 6, 4:26 AM CDT | Freeze Warning | PAH | 29 hr |
| Apr 7, 10:58 AM CDT | Freeze Warning | PAH | 22 hr |
| Apr 9, 10:52 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Apr 10, 12:48 AM CDT | Severe Thunderstorm Warning | PAH | 27 min |
| Apr 10, 12:50 AM CDT | Mesoscale Discussion | SPC | 85 min |
| Apr 10, 12:55 AM CDT | Severe Thunderstorm Warning | PAH | 50 min |
| Apr 10, 8:53 AM CDT | Tornado Watch | SPC | 7 hr |
| Apr 25, 11:31 AM CDT | Lake Wind Advisory | PAH | 7 hr |
| Apr 26, 4:16 AM CDT | Lake Wind Advisory | PAH | 15 hr |
| Apr 27, 3:20 AM CDT | Lake Wind Advisory | PAH | 14 hr |
| Apr 27, 5:08 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Apr 30, 6:45 PM CDT | Flash Flood Warning | 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 | 3 |
| Severe Thunderstorm Watch | 1 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 4 |
| Flooding | |
| Flash Flood Warning | 1 |
| Areal Flood Advisory | 2 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 2 |
| Frost Advisory | 1 |
| Wind and dust | |
| Lake Wind Advisory | 3 |
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20082010
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.