Alert archive / Illinois / LaSalle County / 2009
Weather alerts in LaSalle County, Illinois, May 2009
24 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
- 24
- Warnings
- 13
- Watches
- 3
- Advisories
- 4
- Busiest day
- May 13, 20098 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 30, 7:25 PM CDT | River Flood Warning | LOT | 23 hr |
| May 6, 2:46 PM CDT | Areal Flood Advisory | LOT | 49 days |
| May 7, 3:48 PM CDT | Severe Thunderstorm Warning | LOT | 42 min |
| May 7, 4:06 PM CDT | Severe Thunderstorm Warning | LOT | 37 min |
| May 8, 8:35 PM CDT | Mesoscale Discussion | SPC | 85 min |
| May 13, 5:39 AM CDT | River Flood Warning | LOT | 18 days |
| May 13, 9:16 AM CDT | River Flood Warning | LOT | 12 hr |
| May 13, 11:13 AM CDT | River Flood Warning | LOT | 5 days |
| May 13, 4:08 PM CDT | River Flood Watch | LOT | 5 hr |
| May 13, 5:47 PM CDT | Mesoscale Discussion | SPC | 88 min |
| May 13, 5:54 PM CDT | Severe Thunderstorm Warning | LOT | 34 min |
| May 13, 6:02 PM CDT | Tornado Watch | SPC | 5 hr |
| May 13, 6:26 PM CDT | Severe Thunderstorm Warning | LOT | 28 min |
| May 13, 8:35 PM CDT | Mesoscale Discussion | SPC | 85 min |
| May 13, 9:09 PM CDT | River Flood Warning | LOT | 4 days |
| May 13, 10:17 PM CDT | Mesoscale Discussion | SPC | 58 min |
| May 14, 3:34 PM CDT | Flash Flood Watch | LOT | 30 hr |
| May 15, 11:05 AM CDT | River Flood Warning | LOT | 22 hr |
| May 15, 12:38 PM CDT | Wind Advisory | LOT | 2 hr |
| May 15, 2:48 PM CDT | Areal Flood Advisory | LOT | 57 days |
| May 15, 5:46 PM CDT | Flash Flood Warning | LOT | 6 hr |
| May 15, 11:16 PM CDT | Areal Flood Warning | LOT | 12 hr |
| May 16, 11:27 AM CDT | Areal Flood Warning | LOT | 24 hr |
| May 25, 7:52 PM CDT | River Flood Advisory | LOT | 25 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 | 4 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 4 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 1 |
| River Flood Warning | 6 |
| Flash Flood Watch | 1 |
| River Flood Watch | 1 |
| Areal Flood Advisory | 2 |
| River Flood Advisory | 1 |
| Wind and dust | |
| 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. Warning verification from the Mesonet's Cow. Rebuilt daily.