Alert archive / Iowa / Flash Flood Watches
Flash Flood Watches in Iowa, 2020
18 flash flood watches in 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 2020. Tap one for its archive.
- Flash Flood Watches
- 18
- Busiest month
- June9 flash flood watches
- Busiest day
- June 8, 20204 flash flood watches
Over time
By month
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, 11:38 AM CDT | Flash Flood Watch | DVN | Cedar, Clinton, Des Moines, Henry, Jackson, Jefferson and 9 more | 19 hr |
| May 14, 12:26 PM CDT | Flash Flood Watch | DMX | Davis, Wapello | 11 hr |
| May 24, 4:00 AM CDT | Flash Flood Watch | OAX | Fremont, Mills, Montgomery, Page | 39 hr |
| May 26, 3:45 AM CDT | Flash Flood Watch | OAX | Fremont, Mills, Montgomery, Page | 12 hr |
| May 28, 3:32 AM CDT | Flash Flood Watch | DVN | Benton, Buchanan, Cedar, Delaware, Dubuque, Henry and 8 more | 15 hr |
| May 28, 3:42 AM CDT | Flash Flood Watch | DMX | Appanoose, Davis, Lucas, Mahaska, Marion, Monroe and 4 more | 13 hr |
| May 28, 3:47 AM CDT | Flash Flood Watch | ARX | Allamakee, Clayton, Fayette | 10 hr |
| Jun 8, 3:21 AM CDT | Flash Flood Watch | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 47 hr |
| Jun 8, 3:23 AM CDT | Flash Flood Watch | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 40 hr |
| Jun 8, 3:42 AM CDT | Flash Flood Watch | DMX | Adair, Adams, Appanoose, Black Hawk, Boone, Bremer and 33 more | 57 hr |
| Jun 8, 3:31 PM CDT | Flash Flood Watch | OAX | Fremont, Mills, Montgomery, Page, Pottawattamie | 36 hr |
| Jun 10, 3:49 AM CDT | Flash Flood Watch | DVN | Benton, Buchanan, Cedar, Delaware, Dubuque, Iowa and 3 more | 12 hr |
| Jun 21, 9:40 AM CDT | Flash Flood Watch | FSD | Buena Vista, Cherokee, Ida, Plymouth, Woodbury | 12 hr |
| Jun 22, 10:03 AM CDT | Flash Flood Watch | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 5 more | 9 hr |
| Jun 22, 10:09 AM CDT | Flash Flood Watch | ARX | Clayton, Fayette | 9 hr |
| Jun 29, 3:56 AM CDT | Flash Flood Watch | DVN | Lee, Van Buren | 57 hr |
| Jul 26, 3:31 AM CDT | Flash Flood Watch | OAX | Fremont, Mills, Montgomery, Page, Pottawattamie | 25 hr |
| Sep 11, 2:28 PM CDT | Flash Flood Watch | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 15 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Cedar County6
- Johnson County6
- Jones County6
- Van Buren County5
- Benton County5
- Buchanan County5
- Delaware County5
- Dubuque County5
- Iowa County5
- Linn County5
- Clinton County4
- Henry County4
- Jackson County4
- Jefferson County4
- Keokuk County4
- Lee County4
- Washington County4
- Fremont County4
- Mills County4
- Montgomery County4
- Page County4
- Des Moines County3
- Louisa County3
- Muscatine County3
- Scott County3
- Davis County3
- Wapello County3
- Clayton County3
- Fayette County3
- Appanoose County2
- Lucas County2
- Mahaska County2
- Marion County2
- Monroe County2
- Poweshiek County2
- Tama County2
- Wayne County2
- Allamakee County2
- Pottawattamie County2
- Chickasaw County1
38 more counties
- Floyd County1
- Howard County1
- Mitchell County1
- Winneshiek County1
- Adair County1
- Adams County1
- Black Hawk County1
- Boone County1
- Bremer County1
- Butler County1
- Cass County1
- Cerro Gordo County1
- Clarke County1
- Dallas County1
- Decatur County1
- Franklin County1
- Grundy County1
- Guthrie County1
- Hamilton County1
- Hancock County1
- Hardin County1
- Jasper County1
- Madison County1
- Marshall County1
- Polk County1
- Ringgold County1
- Story County1
- Taylor County1
- Union County1
- Warren County1
- Winnebago County1
- Worth County1
- Wright County1
- Buena Vista County1
- Cherokee County1
- Ida County1
- Plymouth County1
- Woodbury County1
The busiest days
Days with the most alerts issued, by UTC date.
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.