Alert archive / Illinois / Flash Flood Watches / 2009
Flash Flood Watches in Illinois, August 2009
10 flash flood watches in August 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 flash flood watches reaches back to 2005.
Flash Flood Watches by county
Each county as a circle sized by its count in August 2009. Tap one for its archive.
- Flash Flood Watches
- 10
- Busiest day
- August 17, 20093 flash flood watches
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 |
|---|---|---|---|---|
| Aug 3, 3:52 PM CDT | Flash Flood Watch | LSX | Adams, Brown, Pike | 17 hr |
| Aug 9, 3:41 PM CDT | Flash Flood Watch | DVN | Carroll, Jo Daviess, Stephenson | 11 hr |
| Aug 17, 3:03 AM CDT | Flash Flood Watch | ILX | Cass, DeWitt, Fulton, Knox, Logan, McLean and 11 more | 12 hr |
| Aug 17, 3:49 AM CDT | Flash Flood Watch | DVN | Hancock, Henderson, McDonough, Warren | 11 hr |
| Aug 17, 4:09 AM CDT | Flash Flood Watch | LSX | Adams, Brown, Pike | 11 hr |
| Aug 19, 3:20 PM CDT | Flash Flood Watch | LSX | Adams, Bond, Brown, Calhoun, Clinton, Fayette and 10 more | 13 hr |
| Aug 19, 8:56 PM CDT | Flash Flood Watch | ILX | Cass, Champaign, Christian, Clark, Clay, Coles and 29 more | 10 hr |
| Aug 26, 9:10 AM CDT | Flash Flood Watch | DVN | Bureau, Carroll, Henderson, Henry, Jo Daviess, Mercer and 5 more | 42 hr |
| Aug 26, 1:59 PM CDT | Flash Flood Watch | LOT | Boone, DeKalb, DuPage, Grundy, Kane, Kendall and 6 more | 37 hr |
| Aug 26, 3:06 PM CDT | Flash Flood Watch | ILX | Knox, Marshall, Stark | 24 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Adams County3
- Brown County3
- Pike County3
- Knox County3
- Marshall County3
- Stark County3
- Carroll County2
- Jo Daviess County2
- Stephenson County2
- Cass County2
- DeWitt County2
- Fulton County2
- Logan County2
- McLean County2
- Mason County2
- Menard County2
- Morgan County2
- Peoria County2
- Sangamon County2
- Schuyler County2
- Scott County2
- Tazewell County2
- Woodford County2
- Henderson County2
- Warren County2
- Hancock County1
- McDonough County1
- Bond County1
- Calhoun County1
- Clinton County1
- Fayette County1
- Greene County1
- Jersey County1
- Macoupin County1
- Madison County1
- Marion County1
- Monroe County1
- Montgomery County1
- Saint Clair County1
- Washington County1
36 more counties
- Champaign County1
- Christian County1
- Clark County1
- Clay County1
- Coles County1
- Crawford County1
- Cumberland County1
- Douglas County1
- Edgar County1
- Effingham County1
- Jasper County1
- Lawrence County1
- Macon County1
- Moultrie County1
- Piatt County1
- Richland County1
- Shelby County1
- Vermilion County1
- Bureau County1
- Henry County1
- Mercer County1
- Putnam County1
- Rock Island County1
- Whiteside County1
- Boone County1
- DeKalb County1
- DuPage County1
- Grundy County1
- Kane County1
- Kendall County1
- Lake County1
- LaSalle County1
- Lee County1
- McHenry County1
- Ogle County1
- Winnebago County1
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.