Alert archive / Iowa / Flash Flood Watches
Flash Flood Watches in Iowa, 2018
46 flash flood watches in 2018. 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 2018. Tap one for its archive.
- Flash Flood Watches
- 46
- Busiest month
- June17 flash flood watches
- Busiest day
- September 4, 20184 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 |
|---|---|---|---|---|
| Jun 9, 11:04 AM CDT | Flash Flood Watch | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 14 hr |
| Jun 9, 11:25 AM CDT | Flash Flood Watch | DMX | Black Hawk, Bremer, Butler, Cerro Gordo, Worth | 12 hr |
| Jun 9, 3:01 PM CDT | Flash Flood Watch | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 5 more | 16 hr |
| Jun 10, 9:53 PM CDT | Flash Flood Watch | DMX | Appanoose, Boone, Clarke, Dallas, Decatur, Greene and 11 more | 10 hr |
| Jun 18, 3:28 PM CDT | Flash Flood Watch | OAX | Harrison, Monona, Pottawattamie, Shelby | 13 hr |
| Jun 18, 3:41 PM CDT | Flash Flood Watch | DMX | Adair, Audubon, Black Hawk, Boone, Bremer, Butler and 26 more | 16 hr |
| Jun 19, 3:16 PM CDT | Flash Flood Watch | OAX | Fremont, Harrison, Mills, Montgomery, Pottawattamie, Shelby | 16 hr |
| Jun 20, 3:16 AM CDT | Flash Flood Watch | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 28 hr |
| Jun 20, 4:28 AM CDT | Flash Flood Watch | DMX | Adair, Audubon, Boone, Calhoun, Carroll, Cass and 18 more | 23 hr |
| Jun 20, 4:30 AM CDT | Flash Flood Watch | OAX | Harrison, Monona, Pottawattamie, Shelby | 24 hr |
| Jun 21, 3:47 AM CDT | Flash Flood Watch | DVN | Cedar, Clinton, Delaware, Dubuque, Jackson, Johnson and 6 more | 23 hr |
| Jun 24, 9:52 PM CDT | Flash Flood Watch | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 25 hr |
| Jun 24, 9:54 PM CDT | Flash Flood Watch | OAX | Monona | 24 hr |
| Jun 25, 1:08 PM CDT | Flash Flood Watch | DMX | Calhoun, Carroll, Cerro Gordo, Crawford, Emmet, Greene and 10 more | 14 hr |
| Jun 30, 2:59 AM CDT | Flash Flood Watch | DMX | Adair, Adams, Audubon, Black Hawk, Boone, Calhoun and 31 more | 27 hr |
| Jun 30, 3:09 AM CDT | Flash Flood Watch | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, O'Brien and 3 more | 25 hr |
| Jun 30, 3:09 AM CDT | Flash Flood Watch | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Pottawattamie and 1 more | 25 hr |
| Jun 30, 10:06 PM CDT | Flash Flood Watch | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 5 more | 5 hr |
| Jul 12, 4:47 AM CDT | Flash Flood Watch | FSD | Dickinson, Lyon, O'Brien, Osceola, Sioux | 26 hr |
| Jul 13, 3:48 AM CDT | Flash Flood Watch | DMX | Adair, Adams, Audubon, Black Hawk, Boone, Bremer and 24 more | 18 hr |
| Jul 13, 3:53 AM CDT | Flash Flood Watch | OAX | Fremont, Harrison, Mills, Montgomery, Page, Pottawattamie and 1 more | 17 hr |
| Aug 19, 2:00 PM CDT | Flash Flood Watch | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 25 hr |
| Aug 27, 11:33 AM CDT | Flash Flood Watch | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 33 hr |
| Aug 28, 9:08 AM CDT | Flash Flood Watch | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 20 hr |
| Aug 31, 3:07 PM CDT | Flash Flood Watch | ARX | Allamakee, Clayton | 23 hr |
| Sep 1, 3:44 AM CDT | Flash Flood Watch | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 13 more | 24 hr |
| Sep 1, 4:38 AM CDT | Flash Flood Watch | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 34 more | 24 hr |
| Sep 1, 5:15 PM CDT | Flash Flood Watch | OAX | Fremont, Harrison, Mills, Montgomery, Page, Pottawattamie and 1 more | 44 hr |
| Sep 2, 9:26 AM CDT | Flash Flood Watch | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 39 hr |
| Sep 2, 9:45 AM CDT | Flash Flood Watch | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 30 more | 36 hr |
| Sep 3, 1:06 PM CDT | Flash Flood Watch | OAX | Fremont, Montgomery, Page | 45 hr |
| Sep 4, 3:33 AM CDT | Flash Flood Watch | DMX | Black Hawk, Boone, Bremer, Butler, Calhoun, Cerro Gordo and 22 more | 27 hr |
| Sep 4, 3:56 AM CDT | Flash Flood Watch | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 13 more | 39 hr |
| Sep 4, 4:00 AM CDT | Flash Flood Watch | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 33 hr |
| Sep 4, 4:01 AM CDT | Flash Flood Watch | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, O'Brien and 3 more | 17 hr |
| Sep 5, 7:12 AM CDT | Flash Flood Watch | DMX | Adair, Adams, Appanoose, Clarke, Davis, Decatur and 13 more | 20 hr |
| Sep 6, 2:38 PM CDT | Flash Flood Watch | DVN | Des Moines, Henry, Jefferson, Keokuk, Lee, Louisa and 2 more | 36 hr |
| Sep 6, 3:01 PM CDT | Flash Flood Watch | DMX | Appanoose, Clarke, Davis, Decatur, Lucas, Mahaska and 5 more | 36 hr |
| Sep 19, 4:10 AM CDT | Flash Flood Watch | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 32 hr |
| Sep 19, 10:31 AM CDT | Flash Flood Watch | FSD | Buena Vista, Cherokee, Clay, Dickinson, Lyon, O'Brien and 4 more | 26 hr |
| Sep 19, 10:41 AM CDT | Flash Flood Watch | DMX | Bremer, Butler, Cerro Gordo, Emmet, Franklin, Hancock and 7 more | 25 hr |
| Oct 4, 1:18 PM CDT | Flash Flood Watch | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 10 more | 48 hr |
| Oct 4, 1:58 PM CDT | Flash Flood Watch | ARX | Clayton, Fayette | 39 hr |
| Oct 4, 3:34 PM CDT | Flash Flood Watch | DMX | Black Hawk, Bremer, Grundy, Jasper, Mahaska, Marshall and 2 more | 45 hr |
| Oct 7, 2:44 PM CDT | Flash Flood Watch | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 70 hr |
| Oct 9, 3:42 AM CDT | Flash Flood Watch | DVN | Clinton, Des Moines, Henry, Jackson, Lee, Louisa and 3 more | 33 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Clinton County10
- Jackson County10
- Cedar County9
- Delaware County9
- Dubuque County9
- Jones County9
- Linn County9
- Muscatine County9
- Scott County9
- Jasper County9
- Louisa County9
- Black Hawk County8
- Bremer County8
- Benton County8
- Buchanan County8
- Boone County8
- Dallas County8
- Greene County8
- Hamilton County8
- Madison County8
- Polk County8
- Story County8
- Webster County8
- Wright County8
- Johnson County8
- Washington County8
- Butler County7
- Warren County7
- Harrison County7
- Pottawattamie County7
- Shelby County7
- Adair County7
- Calhoun County7
- Franklin County7
- Grundy County7
- Marshall County7
- Poweshiek County7
- Tama County7
- Iowa County7
- Des Moines County7
59 more counties
- Henry County7
- Keokuk County7
- Clayton County6
- Marion County6
- Audubon County6
- Carroll County6
- Cass County6
- Guthrie County6
- Hardin County6
- Humboldt County6
- Mahaska County6
- Pocahontas County6
- Sac County6
- Fremont County6
- Montgomery County6
- Dickinson County6
- O'Brien County6
- Osceola County6
- Jefferson County6
- Allamakee County5
- Fayette County5
- Cerro Gordo County5
- Worth County5
- Appanoose County5
- Clarke County5
- Decatur County5
- Lucas County5
- Monroe County5
- Wayne County5
- Monona County5
- Crawford County5
- Mills County5
- Buena Vista County5
- Cherokee County5
- Clay County5
- Plymouth County5
- Woodbury County5
- Emmet County5
- Hancock County5
- Kossuth County5
- Palo Alto County5
- Winnebago County5
- Adams County5
- Union County5
- Lee County5
- Van Buren County5
- Chickasaw County4
- Floyd County4
- Howard County4
- Mitchell County4
- Winneshiek County4
- Ida County4
- Lyon County4
- Sioux County4
- Taylor County4
- Page County4
- Davis County4
- Ringgold County4
- Wapello County4
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.