Alert archive / Iowa / Tornado Warnings
Tornado Warnings in Iowa, 2018
124 tornado warnings 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 tornado warnings reaches back to 1986.
Tornado Warnings by county
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Tornado Warnings
- 124
- Busiest month
- June39 tornado warnings
- Busiest day
- October 9, 201824 tornado 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 13, 3:38 PM CDT | Tornado Warning | OAX | Mills, Pottawattamie | 22 min |
| May 2, 6:28 PM CDT | Tornado Warning | DMX | Ringgold | 17 min |
| May 2, 6:47 PM CDT | Tornado Warning | DVN | Keokuk | 43 min |
| May 2, 7:24 PM CDT | Tornado Warning | DVN | Johnson, Washington | 51 min |
| May 2, 7:51 PM CDT | Tornado Warning | DVN | Cedar, Johnson, Muscatine | 20 min |
| May 2, 8:02 PM CDT | Tornado Warning | OAX | Page | 13 min |
| May 3, 5:12 PM CDT | Tornado Warning | DMX | Adair, Guthrie | 33 min |
| May 3, 5:26 PM CDT | Tornado Warning | DMX | Dallas, Madison, Polk | 34 min |
| May 3, 5:43 PM CDT | Tornado Warning | DMX | Boone, Dallas, Polk, Story | 21 min |
| May 3, 5:45 PM CDT | Tornado Warning | DMX | Dallas, Guthrie | 30 min |
| May 3, 5:48 PM CDT | Tornado Warning | DMX | Adair, Madison | 17 min |
| May 3, 7:25 PM CDT | Tornado Warning | DMX | Jasper, Marion, Polk, Warren | 35 min |
| May 3, 7:36 PM CDT | Tornado Warning | DMX | Marion, Warren | 24 min |
| May 3, 7:45 PM CDT | Tornado Warning | DMX | Jasper, Marion | 30 min |
| May 3, 7:54 PM CDT | Tornado Warning | DMX | Marion | 36 min |
| May 3, 8:28 PM CDT | Tornado Warning | DMX | Marshall, Tama | 22 min |
| Jun 9, 1:00 PM CDT | Tornado Warning | ARX | Mitchell | 45 min |
| Jun 9, 2:57 PM CDT | Tornado Warning | DMX | Winnebago, Worth | 33 min |
| Jun 9, 3:20 PM CDT | Tornado Warning | DMX | Cerro Gordo, Hancock, Winnebago, Worth | 25 min |
| Jun 9, 3:37 PM CDT | Tornado Warning | DMX | Cerro Gordo, Hancock, Worth | 22 min |
| Jun 9, 4:07 PM CDT | Tornado Warning | DMX | Cerro Gordo | 38 min |
| Jun 9, 4:19 PM CDT | Tornado Warning | ARX | Floyd | 41 min |
| Jun 9, 8:05 PM CDT | Tornado Warning | DVN | Benton | 40 min |
| Jun 9, 8:25 PM CDT | Tornado Warning | DVN | Benton | 65 min |
| Jun 9, 8:50 PM CDT | Tornado Warning | DVN | Buchanan | 40 min |
| Jun 9, 8:58 PM CDT | Tornado Warning | DVN | Benton, Iowa | 32 min |
| Jun 9, 10:28 PM CDT | Tornado Warning | DVN | Benton, Iowa | 19 min |
| Jun 11, 6:51 PM CDT | Tornado Warning | OAX | Pottawattamie | 12 min |
| Jun 11, 7:00 PM CDT | Tornado Warning | OAX | Fremont, Mills | 45 min |
| Jun 11, 7:00 PM CDT | Tornado Warning | OAX | Mills, Montgomery | 30 min |
| Jun 11, 7:21 PM CDT | Tornado Warning | OAX | Fremont, Page | 24 min |
| Jun 11, 7:31 PM CDT | Tornado Warning | OAX | Montgomery, Page | 29 min |
| Jun 18, 6:48 PM CDT | Tornado Warning | OAX | Monona | 27 min |
| Jun 20, 2:16 PM CDT | Tornado Warning | DMX | Carroll, Greene | 29 min |
| Jun 20, 2:22 PM CDT | Tornado Warning | DMX | Boone, Dallas, Greene | 25 min |
| Jun 20, 2:29 PM CDT | Tornado Warning | DVN | Keokuk | 31 min |
| Jun 20, 2:43 PM CDT | Tornado Warning | DMX | Webster | 47 min |
| Jun 20, 2:46 PM CDT | Tornado Warning | DMX | Calhoun, Greene | 17 min |
| Jun 20, 3:02 PM CDT | Tornado Warning | DMX | Hardin | 11 min |
| Jun 20, 3:16 PM CDT | Tornado Warning | DMX | Hardin | 29 min |
| Jun 20, 3:18 PM CDT | Tornado Warning | DMX | Grundy, Hardin | 57 min |
| Jun 20, 3:21 PM CDT | Tornado Warning | DMX | Humboldt, Kossuth | 39 min |
| Jun 20, 3:24 PM CDT | Tornado Warning | DMX | Webster | 37 min |
| Jun 20, 3:57 PM CDT | Tornado Warning | DMX | Grundy, Hardin | 33 min |
| Jun 20, 5:25 PM CDT | Tornado Warning | DVN | Scott | 29 min |
| Jun 20, 5:34 PM CDT | Tornado Warning | DMX | Mahaska, Monroe, Wapello | 41 min |
| Jun 25, 4:56 PM CDT | Tornado Warning | DMX | Ringgold | 34 min |
| Jun 25, 5:19 PM CDT | Tornado Warning | DMX | Ringgold | 26 min |
| Jun 25, 5:21 PM CDT | Tornado Warning | DMX | Ringgold, Union | 24 min |
| Jun 25, 5:26 PM CDT | Tornado Warning | DMX | Ringgold | 34 min |
| Jun 25, 5:58 PM CDT | Tornado Warning | DMX | Decatur, Ringgold | 32 min |
| Jun 25, 6:47 PM CDT | Tornado Warning | DMX | Madison | 28 min |
| Jun 30, 4:07 PM CDT | Tornado Warning | OAX | Harrison, Shelby | 23 min |
| Jun 30, 4:10 PM CDT | Tornado Warning | DMX | Calhoun, Carroll, Greene, Webster | 18 min |
| Jun 30, 4:27 PM CDT | Tornado Warning | DMX | Crawford | 18 min |
| Jul 19, 2:50 PM CDT | Tornado Warning | DMX | Jasper, Marshall, Polk | 25 min |
| Jul 19, 3:05 PM CDT | Tornado Warning | DMX | Franklin, Hamilton, Hardin, Wright | 40 min |
| Jul 19, 3:11 PM CDT | Tornado Warning | DMX | Jasper | 34 min |
| Jul 19, 3:22 PM CDT | Tornado Warning | DMX | Marshall, Story | 38 min |
| Jul 19, 3:26 PM CDT | Tornado Warning | DMX | Hamilton, Hardin, Marshall, Story | 34 min |
| Jul 19, 3:37 PM CDT | Tornado Warning | DMX | Jasper, Mahaska, Marion | 23 min |
| Jul 19, 3:40 PM CDT | Tornado Warning | DMX | Franklin, Hardin | 35 min |
| Jul 19, 3:54 PM CDT | Tornado Warning | DMX | Grundy, Hardin, Marshall, Story | 51 min |
| Jul 19, 3:54 PM CDT | Tornado Warning | DMX | Jasper, Mahaska, Marion | 36 min |
| Jul 19, 4:14 PM CDT | Tornado Warning | DMX | Mahaska, Marion | 31 min |
| Jul 19, 4:36 PM CDT | Tornado Warning | DMX | Mahaska, Wapello | 24 min |
| Jul 19, 4:37 PM CDT | Tornado Warning | DMX | Marshall, Tama | 23 min |
| Jul 19, 4:52 PM CDT | Tornado Warning | DMX | Mahaska, Wapello | 38 min |
| Jul 19, 4:52 PM CDT | Tornado Warning | DMX | Marshall, Poweshiek, Tama | 38 min |
| Jul 19, 4:54 PM CDT | Tornado Warning | DVN | Keokuk | 51 min |
| Jul 19, 5:12 PM CDT | Tornado Warning | DMX | Poweshiek, Tama | 18 min |
| Jul 19, 5:13 PM CDT | Tornado Warning | DMX | Davis, Mahaska, Wapello | 47 min |
| Jul 19, 5:26 PM CDT | Tornado Warning | DVN | Jefferson, Van Buren | 49 min |
| Jul 19, 5:59 PM CDT | Tornado Warning | DVN | Van Buren | 44 min |
| Jul 19, 6:23 PM CDT | Tornado Warning | DVN | Lee, Van Buren | 67 min |
| Aug 16, 6:07 PM CDT | Tornado Warning | DVN | Clinton, Jackson, Jones | 16 min |
| Aug 20, 3:50 PM CDT | Tornado Warning | DVN | Clinton, Jackson | 40 min |
| Aug 24, 6:33 PM CDT | Tornado Warning | DMX | Cerro Gordo, Hancock | 27 min |
| Aug 28, 5:40 PM CDT | Tornado Warning | DVN | Iowa | 35 min |
| Aug 28, 6:02 PM CDT | Tornado Warning | DVN | Iowa, Johnson | 28 min |
| Aug 28, 7:08 PM CDT | Tornado Warning | DVN | Clinton, Scott | 31 min |
| Sep 1, 7:52 PM CDT | Tornado Warning | DVN | Keokuk | 23 min |
| Sep 2, 3:41 PM CDT | Tornado Warning | DVN | Delaware, Dubuque | 22 min |
| Sep 3, 4:41 PM CDT | Tornado Warning | DVN | Benton, Buchanan, Linn | 34 min |
| Sep 3, 5:15 PM CDT | Tornado Warning | DVN | Buchanan, Delaware, Jones, Linn | 45 min |
| Sep 3, 6:05 PM CDT | Tornado Warning | DVN | Delaware, Dubuque, Jones, Linn | 40 min |
| Sep 3, 6:58 PM CDT | Tornado Warning | DMX | Poweshiek | 32 min |
| Sep 4, 3:46 PM CDT | Tornado Warning | DMX | Kossuth | 29 min |
| Sep 4, 4:45 PM CDT | Tornado Warning | DMX | Hancock, Winnebago | 30 min |
| Sep 5, 2:27 PM CDT | Tornado Warning | DVN | Lee | 22 min |
| Sep 20, 4:17 PM CDT | Tornado Warning | FSD | Plymouth, Woodbury | 28 min |
| Sep 25, 1:19 PM CDT | Tornado Warning | DVN | Henry, Louisa, Washington | 41 min |
| Sep 25, 1:28 PM CDT | Tornado Warning | DVN | Jones, Linn | 47 min |
| Sep 25, 1:49 PM CDT | Tornado Warning | DVN | Louisa, Muscatine | 41 min |
| Sep 25, 1:51 PM CDT | Tornado Warning | DVN | Cedar, Jones | 24 min |
| Sep 25, 2:12 PM CDT | Tornado Warning | DVN | Henry, Louisa, Washington | 27 min |
| Oct 8, 6:29 PM CDT | Tornado Warning | DMX | Boone, Dallas, Greene, Guthrie | 31 min |
| Oct 8, 6:36 PM CDT | Tornado Warning | DMX | Appanoose | 24 min |
| Oct 8, 6:47 PM CDT | Tornado Warning | DMX | Decatur, Ringgold | 43 min |
| Oct 8, 6:55 PM CDT | Tornado Warning | DMX | Boone, Dallas, Greene | 24 min |
| Oct 8, 7:23 PM CDT | Tornado Warning | DMX | Clarke, Decatur | 37 min |
| Oct 8, 7:59 PM CDT | Tornado Warning | DMX | Clarke, Lucas, Warren | 31 min |
| Oct 8, 8:20 PM CDT | Tornado Warning | DVN | Keokuk | 29 min |
| Oct 8, 10:03 PM CDT | Tornado Warning | DMX | Poweshiek | 15 min |
| Oct 9, 2:12 PM CDT | Tornado Warning | DVN | Dubuque | 48 min |
| Oct 9, 2:16 PM CDT | Tornado Warning | DMX | Mahaska, Marion, Monroe | 29 min |
| Oct 9, 3:06 PM CDT | Tornado Warning | DVN | Benton, Iowa | 39 min |
| Oct 9, 3:09 PM CDT | Tornado Warning | DVN | Delaware | 51 min |
| Oct 9, 3:32 PM CDT | Tornado Warning | DMX | Appanoose, Monroe | 43 min |
| Oct 9, 3:38 PM CDT | Tornado Warning | DVN | Benton, Iowa | 52 min |
| Oct 9, 3:42 PM CDT | Tornado Warning | DMX | Mahaska, Marion, Monroe | 22 min |
| Oct 9, 4:03 PM CDT | Tornado Warning | DVN | Iowa, Keokuk, Washington | 27 min |
| Oct 9, 4:21 PM CDT | Tornado Warning | DMX | Poweshiek, Tama | 24 min |
| Oct 9, 4:28 PM CDT | Tornado Warning | DMX | Ringgold, Taylor | 47 min |
| Oct 9, 4:31 PM CDT | Tornado Warning | DVN | Iowa, Johnson | 44 min |
| Oct 9, 4:58 PM CDT | Tornado Warning | DMX | Tama | 32 min |
| Oct 9, 4:59 PM CDT | Tornado Warning | DMX | Jasper, Poweshiek | 31 min |
| Oct 9, 5:01 PM CDT | Tornado Warning | ARX | Allamakee | 25 min |
| Oct 9, 5:13 PM CDT | Tornado Warning | DMX | Adair, Adams, Union | 32 min |
| Oct 9, 5:14 PM CDT | Tornado Warning | DVN | Benton, Iowa, Johnson, Linn | 46 min |
| Oct 9, 5:44 PM CDT | Tornado Warning | DMX | Adair | 46 min |
| Oct 9, 5:51 PM CDT | Tornado Warning | DVN | Linn | 24 min |
| Oct 9, 6:11 PM CDT | Tornado Warning | DMX | Adair, Dallas, Guthrie | 49 min |
| Oct 9, 6:30 PM CDT | Tornado Warning | DMX | Polk, Warren | 30 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Marion County9
- Iowa County9
- Mahaska County9
- Ringgold County8
- Benton County8
- Hardin County8
- Dallas County7
- Jasper County7
- Marshall County7
- Keokuk County6
- Tama County6
- Greene County6
- Poweshiek County6
- Linn County6
- Johnson County5
- Adair County5
- Polk County5
- Jones County5
- Washington County4
- Guthrie County4
- Boone County4
- Story County4
- Warren County4
- Cerro Gordo County4
- Hancock County4
- Monroe County4
- Wapello County4
- Delaware County4
- Mills County3
- Page County3
- Madison County3
- Winnebago County3
- Worth County3
- Buchanan County3
- Webster County3
- Grundy County3
- Decatur County3
- Van Buren County3
- Clinton County3
- Dubuque County3
34 more counties
- Louisa County3
- Pottawattamie County2
- Cedar County2
- Muscatine County2
- Fremont County2
- Montgomery County2
- Carroll County2
- Calhoun County2
- Kossuth County2
- Scott County2
- Union County2
- Franklin County2
- Hamilton County2
- Lee County2
- Jackson County2
- Henry County2
- Appanoose County2
- Clarke County2
- Mitchell County1
- Floyd County1
- Monona County1
- Humboldt County1
- Harrison County1
- Shelby County1
- Crawford County1
- Wright County1
- Davis County1
- Jefferson County1
- Plymouth County1
- Woodbury County1
- Lucas County1
- Taylor County1
- Allamakee County1
- Adams County1
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. Rebuilt daily.