Alert archive / Illinois / River Flood Advisories / 2009
River Flood Advisories in Illinois, April 2009
14 river flood advisories in April 2009. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of river flood advisories reaches back to 2005.
River Flood Advisories by county
Each county as a circle sized by its count in April 2009. Tap one for its archive.
- River Flood Advisories
- 14
- Busiest day
- April 26, 20093 river flood advisories
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 | Counties | Lasted |
|---|---|---|---|---|
| Apr 6, 10:31 AM CDT | River Flood Advisory | LOT | Grundy | 53 hr |
| Apr 20, 9:43 AM CDT | River Flood Advisory | LOT | Winnebago | 11 days |
| Apr 20, 9:43 AM CDT | River Flood Advisory | LOT | Ogle | 10 hr |
| Apr 25, 9:09 PM CDT | River Flood Advisory | LOT | Cook | 15 hr |
| Apr 25, 9:09 PM CDT | River Flood Advisory | LOT | Ogle | 46 hr |
| Apr 26, 4:08 PM CDT | River Flood Advisory | LOT | Boone | 36 hr |
| Apr 27, 5:25 AM CDT | River Flood Advisory | LOT | Cook | 36 hr |
| Apr 27, 10:46 AM CDT | River Flood Advisory | LOT | Winnebago | 9 hr |
| Apr 27, 10:55 AM CDT | River Flood Advisory | LOT | LaSalle | 11 hr |
| Apr 27, 8:19 PM CDT | River Flood Advisory | LOT | Winnebago | 16 days |
| Apr 27, 8:33 PM CDT | River Flood Advisory | LOT | Ogle | 10 days |
| Apr 28, 10:08 AM CDT | River Flood Advisory | LOT | Boone | 36 hr |
| Apr 28, 8:44 PM CDT | River Flood Advisory | LOT | Cook | 5 days |
| Apr 28, 8:44 PM CDT | River Flood Advisory | LOT | Grundy | 4 days |
By county
Every county with at least one alert. A county page lists each alert that covered it.
Nearby
Alerts in force nowTornadoes on recordThe 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.