Alert archive / Iowa / Severe Thunderstorm Warnings / 2011
Severe Thunderstorm Warnings in Iowa, July 2011
80 severe thunderstorm warnings in July 2011. 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 severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in July 2011. Tap one for its archive.
- Severe Thunderstorm Warnings
- 80
- Busiest day
- July 11, 201122 severe thunderstorm warnings
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 |
|---|---|---|---|---|
| Jul 1, 6:51 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Crawford, Sac | 39 min |
| Jul 1, 7:07 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth, Palo Alto | 38 min |
| Jul 1, 7:19 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas, Sac | 41 min |
| Jul 1, 7:41 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth, Palo Alto | 49 min |
| Jul 1, 8:00 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Kossuth, Palo Alto, Pocahontas | 45 min |
| Jul 1, 8:54 PM CDT | Severe Thunderstorm Warning | DMX | Winnebago, Worth | 36 min |
| Jul 1, 9:11 PM CDT | Severe Thunderstorm Warning | DMX | Worth | 49 min |
| Jul 1, 9:13 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Hamilton, Webster | 47 min |
| Jul 1, 9:33 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock, Worth | 42 min |
| Jul 1, 9:39 PM CDT | Severe Thunderstorm Warning | ARX | Floyd, Mitchell | 66 min |
| Jul 1, 9:42 PM CDT | Severe Thunderstorm Warning | DMX | Franklin, Hamilton, Hardin, Wright | 48 min |
| Jul 1, 10:05 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin, Wright | 40 min |
| Jul 1, 10:23 PM CDT | Severe Thunderstorm Warning | ARX | Howard | 37 min |
| Jul 1, 10:50 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Floyd, Howard, Mitchell | 40 min |
| Jul 1, 10:50 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Guthrie | 40 min |
| Jul 1, 11:19 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin, Grundy, Hardin | 41 min |
| Jul 5, 3:10 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Kossuth | 27 min |
| Jul 5, 3:36 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Kossuth | 39 min |
| Jul 5, 4:45 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Humboldt, Webster, Wright | 45 min |
| Jul 5, 5:43 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Greene, Webster | 47 min |
| Jul 5, 6:28 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas | 47 min |
| Jul 11, 1:04 AM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 41 min |
| Jul 11, 1:09 AM CDT | Severe Thunderstorm Warning | FSD | Dickinson | 36 min |
| Jul 11, 1:12 AM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth, Palo Alto | 48 min |
| Jul 11, 1:27 AM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 33 min |
| Jul 11, 1:53 AM CDT | Severe Thunderstorm Warning | FSD | O'Brien, Sioux | 37 min |
| Jul 11, 2:00 AM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee, Clay, O'Brien | 30 min |
| Jul 11, 2:10 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Audubon, Cass, Guthrie | 50 min |
| Jul 11, 2:24 AM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock, Winnebago, Worth | 51 min |
| Jul 11, 2:41 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Dallas, Guthrie, Madison, Polk, Warren | 49 min |
| Jul 11, 2:52 AM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Humboldt, Webster, Wright | 38 min |
| Jul 11, 3:25 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Marshall, Story | 50 min |
| Jul 11, 3:34 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion, Marshall, Polk, Story, Warren | 41 min |
| Jul 11, 4:02 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Poweshiek, Tama | 43 min |
| Jul 11, 4:18 AM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Tama | 42 min |
| Jul 11, 4:20 AM CDT | Severe Thunderstorm Warning | DVN | Benton, Iowa, Johnson, Keokuk, Linn | 55 min |
| Jul 11, 4:49 AM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Delaware, Linn | 56 min |
| Jul 11, 4:55 AM CDT | Severe Thunderstorm Warning | DVN | Benton, Cedar, Delaware, Iowa, Johnson, Jones and 1 more | 65 min |
| Jul 11, 4:57 AM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 18 min |
| Jul 11, 5:24 AM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware, Dubuque, Jackson, Jones, Linn | 66 min |
| Jul 11, 5:35 AM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Dubuque, Jackson, Jones | 55 min |
| Jul 11, 5:38 AM CDT | Severe Thunderstorm Warning | ARX | Clayton | 58 min |
| Jul 11, 6:11 AM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson, Scott | 64 min |
| Jul 15, 4:41 PM CDT | Severe Thunderstorm Warning | DMX | Winnebago, Worth | 49 min |
| Jul 15, 5:35 PM CDT | Severe Thunderstorm Warning | DMX | Worth | 40 min |
| Jul 21, 6:54 PM CDT | Severe Thunderstorm Warning | DMX | Wapello | 37 min |
| Jul 21, 8:00 PM CDT | Severe Thunderstorm Warning | DVN | Keokuk | 16 min |
| Jul 22, 3:43 AM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Grundy, Marshall, Tama | 50 min |
| Jul 22, 6:49 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer, Butler, Grundy, Hardin | 56 min |
| Jul 22, 7:29 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Grundy | 46 min |
| Jul 22, 7:45 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Delaware, Linn | 60 min |
| Jul 22, 7:54 PM CDT | Severe Thunderstorm Warning | DMX | Grundy, Marshall, Tama | 66 min |
| Jul 22, 8:02 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Marion | 43 min |
| Jul 22, 8:33 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Poweshiek | 42 min |
| Jul 22, 8:47 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Marion | 43 min |
| Jul 22, 8:59 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Jones, Linn | 61 min |
| Jul 22, 9:08 PM CDT | Severe Thunderstorm Warning | DMX | Poweshiek, Tama | 50 min |
| Jul 22, 9:43 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Jones, Linn | 62 min |
| Jul 22, 9:53 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson, Jones | 67 min |
| Jul 22, 10:11 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Jackson, Jones, Scott | 64 min |
| Jul 22, 10:17 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Poweshiek | 43 min |
| Jul 23, 4:59 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 46 min |
| Jul 23, 5:24 PM CDT | Severe Thunderstorm Warning | OAX | Mills | 51 min |
| Jul 23, 5:43 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Monroe | 47 min |
| Jul 23, 6:15 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Lucas, Monroe, Wayne | 45 min |
| Jul 23, 6:34 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Lee | 45 min |
| Jul 23, 6:42 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Lucas, Monroe, Wayne | 48 min |
| Jul 23, 7:08 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Wayne | 52 min |
| Jul 24, 4:29 AM CDT | Severe Thunderstorm Warning | DVN | Scott | 37 min |
| Jul 24, 4:44 AM CDT | Severe Thunderstorm Warning | DVN | Washington | 31 min |
| Jul 24, 11:03 AM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson, Jones, Linn | 42 min |
| Jul 25, 8:53 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 37 min |
| Jul 26, 4:39 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Lee | 40 min |
| Jul 27, 6:48 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 57 min |
| Jul 28, 3:59 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie | 46 min |
| Jul 28, 4:23 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 52 min |
| Jul 28, 5:12 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 33 min |
| Jul 28, 5:18 AM CDT | Severe Thunderstorm Warning | DMX | Audubon, Carroll, Crawford | 57 min |
| Jul 28, 6:08 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Calhoun, Carroll, Greene, Webster | 52 min |
| Jul 28, 3:18 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 27 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Linn County8
- Jones County8
- Kossuth County6
- Worth County6
- Jasper County6
- Cedar County6
- Webster County5
- Grundy County5
- Marshall County5
- Tama County5
- Black Hawk County5
- Jackson County5
- Palo Alto County4
- Humboldt County4
- Hamilton County4
- Wright County4
- Boone County4
- Poweshiek County4
- Benton County4
- Delaware County4
- Dubuque County4
- Carroll County3
- Emmet County3
- Calhoun County3
- Winnebago County3
- Hancock County3
- Franklin County3
- Hardin County3
- Butler County3
- Dallas County3
- Guthrie County3
- Marion County3
- Johnson County3
- Buchanan County3
- Clinton County3
- Scott County3
- Mahaska County3
- Lucas County3
- Monroe County3
- Appanoose County3
40 more counties
- Wayne County3
- Harrison County3
- Pottawattamie County3
- Crawford County2
- Sac County2
- Pocahontas County2
- Cerro Gordo County2
- Floyd County2
- Mitchell County2
- Howard County2
- Greene County2
- Plymouth County2
- Woodbury County2
- O'Brien County2
- Adair County2
- Audubon County2
- Polk County2
- Warren County2
- Story County2
- Iowa County2
- Keokuk County2
- Mills County2
- Des Moines County2
- Lee County2
- Shelby County2
- Chickasaw County1
- Dickinson County1
- Sioux County1
- Buena Vista County1
- Cherokee County1
- Clay County1
- Cass County1
- Madison County1
- Clayton County1
- Wapello County1
- Bremer County1
- Fremont County1
- Washington County1
- Lyon County1
- Henry County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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.