Alert archive / Illinois / Flash Flood Watches / 2020
Flash Flood Watches in Illinois, May 2020
8 flash flood watches in May 2020. 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 May 2020. Tap one for its archive.
- Flash Flood Watches
- 8
- Busiest day
- May 14, 20204 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 |
|---|---|---|---|---|
| May 14, 3:45 AM CDT | Flash Flood Watch | LSX | Adams, Brown, Pike | 25 hr |
| May 14, 11:38 AM CDT | Flash Flood Watch | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 19 hr |
| May 14, 11:55 AM CDT | Flash Flood Watch | ILX | Cass, Fulton, Knox, Marshall, Mason, Peoria and 4 more | 16 hr |
| May 14, 12:06 PM CDT | Flash Flood Watch | LOT | Cook, DeKalb, DuPage, Grundy, Kane, Kankakee and 6 more | 17 hr |
| May 16, 2:47 PM CDT | Flash Flood Watch | LOT | Cook, DeKalb, DuPage, Ford, Grundy, Iroquois and 8 more | 32 hr |
| May 16, 8:58 PM CDT | Flash Flood Watch | LSX | Bond, Calhoun, Clinton, Fayette, Greene, Jersey and 8 more | 21 hr |
| May 16, 9:06 PM CDT | Flash Flood Watch | ILX | Cass, Champaign, Christian, DeWitt, Douglas, Logan and 15 more | 34 hr |
| May 18, 7:20 AM CDT | Flash Flood Watch | ILX | Sangamon | 24 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Cass County2
- Marshall County2
- Mason County2
- Peoria County2
- Tazewell County2
- Woodford County2
- Cook County2
- DeKalb County2
- DuPage County2
- Grundy County2
- Kane County2
- Kankakee County2
- Kendall County2
- LaSalle County2
- Livingston County2
- Will County2
- Sangamon County2
- Adams County1
- Brown County1
- Pike County1
- Bureau County1
- Carroll County1
- Hancock County1
- Henderson County1
- Henry County1
- Jo Daviess County1
- McDonough County1
- Mercer County1
- Putnam County1
- Rock Island County1
- Stephenson County1
- Warren County1
- Whiteside County1
- Fulton County1
- Knox County1
- Schuyler County1
- Stark County1
- Lee County1
- Ogle County1
- Ford County1
31 more counties
- Iroquois County1
- Lake County1
- McHenry County1
- Bond County1
- Calhoun County1
- Clinton County1
- Fayette County1
- Greene County1
- Jersey County1
- Macoupin County1
- Madison County1
- Marion County1
- Monroe County1
- Montgomery County1
- Randolph County1
- Saint Clair County1
- Washington County1
- Champaign County1
- Christian County1
- DeWitt County1
- Douglas County1
- Logan County1
- McLean County1
- Macon County1
- Menard County1
- Morgan County1
- Moultrie County1
- Piatt County1
- Scott County1
- Shelby County1
- Vermilion County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20192021
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.