Alert archive / Illinois / Knox County / 2009
Weather alerts in Knox County, Illinois, May 2009
16 weather alerts in May 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 16
- Warnings
- 8
- Watches
- 3
- Advisories
- 0
- Busiest day
- May 14, 20094 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 |
|---|---|---|---|
| May 8, 6:10 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 8, 8:29 PM CDT | Severe Thunderstorm Warning | ILX | 46 min |
| May 8, 8:35 PM CDT | Mesoscale Discussion | SPC | 85 min |
| May 8, 9:15 PM CDT | Severe Thunderstorm Warning | ILX | 31 min |
| May 13, 9:27 AM CDT | Mesoscale Discussion | SPC | 63 min |
| May 13, 2:39 PM CDT | Tornado Watch | SPC | 7 hr |
| May 13, 5:47 PM CDT | Mesoscale Discussion | SPC | 88 min |
| May 13, 7:05 PM CDT | Mesoscale Discussion | SPC | 85 min |
| May 13, 8:35 PM CDT | Mesoscale Discussion | SPC | 85 min |
| May 14, 12:24 PM CDT | River Flood Warning | ILX | 6 days |
| May 14, 3:02 PM CDT | Flash Flood Watch | ILX | 32 hr |
| May 15, 9:03 AM CDT | Flash Flood Warning | ILX | 6 hr |
| May 15, 10:28 AM CDT | Flash Flood Warning | ILX | 5 hr |
| May 15, 2:35 PM CDT | Flash Flood Warning | ILX | 6 hr |
| May 15, 7:35 PM CDT | Flash Flood Warning | ILX | 4 hr |
| May 15, 10:44 PM CDT | Areal Flood Warning | ILX | 6 days |
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 | 1 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 5 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 4 |
| River Flood Warning | 1 |
| Flash Flood Watch | 1 |
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. Warning verification from the Mesonet's Cow. Rebuilt daily.