Alert archive / Iowa / Flash Flood Warnings
Flash Flood Warnings in Iowa, 2012
29 flash flood warnings in 2012. 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 warnings reaches back to 1986.
Flash Flood Warnings by county
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Flash Flood Warnings
- 29
- Busiest month
- May13 flash flood warnings
- Busiest day
- May 4, 20128 flash flood warnings
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 |
|---|---|---|---|---|
| Apr 14, 5:13 PM CDT | Flash Flood Warning | OAX | Montgomery | 2 hr |
| Apr 14, 6:59 PM CDT | Flash Flood Warning | DMX | Cass | 3 hr |
| Apr 14, 7:07 PM CDT | Flash Flood Warning | DMX | Adair, Madison | 101 min |
| Apr 14, 7:30 PM CDT | Flash Flood Warning | DMX | Adair, Dallas, Guthrie, Madison, Polk, Warren | 3 hr |
| Apr 14, 8:43 PM CDT | Flash Flood Warning | DMX | Marshall, Tama | 84 min |
| Apr 14, 8:55 PM CDT | Flash Flood Warning | DMX | Clarke, Decatur, Lucas, Marion, Monroe, Ringgold and 2 more | 103 min |
| Apr 14, 11:59 PM CDT | Flash Flood Warning | FSD | Woodbury | 3 hr |
| May 1, 8:40 PM CDT | Flash Flood Warning | FSD | Lyon | 3 hr |
| May 3, 3:48 PM CDT | Flash Flood Warning | DMX | Kossuth | 4 hr |
| May 3, 8:05 PM CDT | Flash Flood Warning | FSD | Cherokee | 93 min |
| May 3, 9:58 PM CDT | Flash Flood Warning | DVN | Keokuk, Louisa, Washington | 6 hr |
| May 3, 10:20 PM CDT | Flash Flood Warning | DVN | Cedar, Johnson, Louisa, Muscatine, Washington | 6 hr |
| May 3, 10:44 PM CDT | Flash Flood Warning | DVN | Louisa, Scott | 6 hr |
| May 4, 1:10 AM CDT | Flash Flood Warning | DVN | Henry, Jefferson | 6 hr |
| May 4, 2:40 AM CDT | Flash Flood Warning | DVN | Lee, Van Buren | 6 hr |
| May 4, 5:44 AM CDT | Flash Flood Warning | DMX | Mahaska, Poweshiek | 4 hr |
| May 4, 6:34 AM CDT | Flash Flood Warning | DVN | Keokuk | 4 hr |
| May 19, 10:11 PM CDT | Flash Flood Warning | FSD | Clay, Dickinson, O'Brien | 3 hr |
| May 27, 7:22 PM CDT | Flash Flood Warning | FSD | Lyon, Plymouth, Sioux | 7 hr |
| May 27, 8:19 PM CDT | Flash Flood Warning | FSD | Lyon, Osceola | 7 hr |
| Jun 16, 5:24 PM CDT | Flash Flood Warning | DVN | Jefferson, Van Buren | 4 hr |
| Jun 20, 4:38 PM CDT | Flash Flood Warning | OAX | Monona | 3 hr |
| Jun 20, 4:54 PM CDT | Flash Flood Warning | FSD | Buena Vista, Ida, Woodbury | 2 hr |
| Aug 4, 1:19 PM CDT | Flash Flood Warning | DVN | Linn | 82 min |
| Aug 4, 1:39 PM CDT | Flash Flood Warning | DVN | Scott | 70 min |
| Sep 4, 8:09 PM CDT | Flash Flood Warning | ARX | Allamakee, Clayton | 6 hr |
| Sep 4, 11:09 PM CDT | Flash Flood Warning | ARX | Allamakee, Winneshiek | 5 hr |
| Sep 5, 1:51 AM CDT | Flash Flood Warning | ARX | Clayton, Fayette | 3 hr |
| Sep 5, 1:59 AM CDT | Flash Flood Warning | ARX | Allamakee, Clayton | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Lyon County3
- Louisa County3
- Allamakee County3
- Clayton County3
- Adair County2
- Madison County2
- Warren County2
- Woodbury County2
- Keokuk County2
- Washington County2
- Scott County2
- Jefferson County2
- Van Buren County2
- Montgomery County1
- Cass County1
- Dallas County1
- Guthrie County1
- Polk County1
- Marshall County1
- Tama County1
- Clarke County1
- Decatur County1
- Lucas County1
- Marion County1
- Monroe County1
- Ringgold County1
- Union County1
- Kossuth County1
- Cherokee County1
- Cedar County1
- Johnson County1
- Muscatine County1
- Henry County1
- Lee County1
- Mahaska County1
- Poweshiek County1
- Clay County1
- Dickinson County1
- O'Brien County1
- Plymouth County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20112013
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. Rebuilt daily.