Alert archive / Illinois / Williamson County / 2009
Weather alerts in Williamson County, Illinois, May 2009
27 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
- 27
- Warnings
- 12
- Watches
- 5
- Advisories
- 3
- Busiest day
- May 8, 200915 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 1, 4:08 AM CDT | Flash Flood Watch | PAH | 55 hr |
| May 7, 9:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| May 7, 10:17 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 7, 11:46 PM CDT | Mesoscale Discussion | SPC | 89 min |
| May 8, 12:08 AM CDT | Severe Thunderstorm Warning | PAH | 52 min |
| May 8, 12:50 AM CDT | Severe Thunderstorm Warning | PAH | 40 min |
| May 8, 1:20 AM CDT | Severe Thunderstorm Warning | PAH | 40 min |
| May 8, 1:51 AM CDT | Severe Thunderstorm Warning | PAH | 39 min |
| May 8, 2:13 AM CDT | Severe Thunderstorm Warning | PAH | 32 min |
| May 8, 9:21 AM CDT | Tornado Watch | SPC | 7 hr |
| May 8, 11:10 AM CDT | Flash Flood Warning | PAH | 6 hr |
| May 8, 11:16 AM CDT | Severe Thunderstorm Warning | PAH | 44 min |
| May 8, 11:51 AM CDT | Tornado Warning | PAH | 27 min |
| May 8, 12:56 PM CDT | Severe Thunderstorm Warning | PAH | 64 min |
| May 8, 1:57 PM CDT | Severe Thunderstorm Warning | PAH | 48 min |
| May 8, 2:16 PM CDT | Mesoscale Discussion | SPC | 89 min |
| May 9, 9:24 AM CDT | River Flood Warning | PAH | 15 days |
| May 13, 1:54 AM CDT | Wind Advisory | PAH | 16 hr |
| May 13, 3:00 PM CDT | Tornado Watch | SPC | 5 hr |
| May 13, 6:05 PM CDT | Mesoscale Discussion | SPC | 85 min |
| May 13, 11:27 PM CDT | Mesoscale Discussion | SPC | 93 min |
| May 14, 1:01 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 14, 2:19 AM CDT | Severe Thunderstorm Warning | PAH | 41 min |
| May 16, 3:13 AM CDT | Lake Wind Advisory | PAH | 16 hr |
| May 17, 10:35 AM CDT | Lake Wind Advisory | PAH | 8 hr |
| May 25, 12:32 PM CDT | Mesoscale Discussion | SPC | 88 min |
| May 27, 1:49 PM CDT | Mesoscale Discussion | SPC | 116 min |
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 | 1 |
| Severe Thunderstorm Watch | 2 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 7 |
| Flooding | |
| Flash Flood Warning | 1 |
| River Flood Warning | 1 |
| Flash Flood Watch | 1 |
| Wind and dust | |
| Lake Wind Advisory | 2 |
| Wind Advisory | 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. Rebuilt daily.