Alert archive / Iowa / Severe Thunderstorm Warnings / 2020
Severe Thunderstorm Warnings in Iowa, July 2020
105 severe thunderstorm warnings in July 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 severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in July 2020. Tap one for its archive.
- Severe Thunderstorm Warnings
- 105
- Busiest day
- July 11, 202047 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, 1:36 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 24 min |
| Jul 1, 2:01 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 31 min |
| Jul 6, 6:31 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 44 min |
| Jul 7, 5:19 PM CDT | Severe Thunderstorm Warning | DVN | Jones, Linn | 26 min |
| Jul 7, 5:47 PM CDT | Severe Thunderstorm Warning | DVN | Jackson, Jones, Linn | 43 min |
| Jul 7, 8:04 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Grundy, Tama | 41 min |
| Jul 7, 8:42 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Grundy, Tama | 33 min |
| Jul 8, 2:51 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 24 min |
| Jul 8, 3:12 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 33 min |
| Jul 8, 3:27 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson | 22 min |
| Jul 9, 8:23 AM CDT | Severe Thunderstorm Warning | DMX | Pocahontas | 52 min |
| Jul 9, 9:54 AM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Kossuth | 51 min |
| Jul 9, 10:26 AM CDT | Severe Thunderstorm Warning | DMX | Hancock, Wright | 49 min |
| Jul 9, 10:47 AM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock, Kossuth, Winnebago, Worth | 58 min |
| Jul 9, 10:57 AM CDT | Severe Thunderstorm Warning | DMX | Hancock | 33 min |
| Jul 9, 11:11 AM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Franklin, Worth | 34 min |
| Jul 9, 11:42 AM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock, Winnebago, Worth | 63 min |
| Jul 9, 11:48 AM CDT | Severe Thunderstorm Warning | ARX | Floyd, Mitchell | 72 min |
| Jul 9, 12:30 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer, Butler, Grundy | 45 min |
| Jul 9, 12:58 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer | 62 min |
| Jul 9, 12:59 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 31 min |
| Jul 9, 1:11 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 34 min |
| Jul 9, 1:18 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Fayette | 87 min |
| Jul 9, 1:22 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer | 38 min |
| Jul 9, 1:44 PM CDT | Severe Thunderstorm Warning | ARX | Winneshiek | 61 min |
| Jul 9, 2:19 PM CDT | Severe Thunderstorm Warning | DVN | Benton | 26 min |
| Jul 9, 2:29 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee, Clayton | 61 min |
| Jul 9, 2:30 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 30 min |
| Jul 9, 2:56 PM CDT | Severe Thunderstorm Warning | DVN | Delaware | 34 min |
| Jul 9, 3:29 PM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque, Jones, Linn | 31 min |
| Jul 9, 3:56 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson, Jones, Linn | 34 min |
| Jul 9, 4:22 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson | 23 min |
| Jul 9, 4:24 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Jones | 36 min |
| Jul 9, 5:08 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Louisa, Muscatine | 52 min |
| Jul 9, 5:35 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Louisa, Muscatine, Scott | 40 min |
| Jul 9, 6:06 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Louisa | 39 min |
| Jul 9, 6:09 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Muscatine, Scott | 51 min |
| Jul 11, 12:53 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona, Pottawattamie | 41 min |
| Jul 11, 7:41 AM CDT | Severe Thunderstorm Warning | ARX | Howard, Mitchell | 49 min |
| Jul 11, 8:21 AM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Fayette, Winneshiek | 39 min |
| Jul 11, 8:43 AM CDT | Severe Thunderstorm Warning | DMX | Bremer | 21 min |
| Jul 11, 8:48 AM CDT | Severe Thunderstorm Warning | ARX | Fayette | 57 min |
| Jul 11, 9:16 AM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer | 14 min |
| Jul 11, 9:17 AM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware | 58 min |
| Jul 11, 10:11 AM CDT | Severe Thunderstorm Warning | DVN | Jones, Linn | 64 min |
| Jul 11, 10:52 AM CDT | Severe Thunderstorm Warning | DVN | Cedar | 38 min |
| Jul 11, 11:30 AM CDT | Severe Thunderstorm Warning | DVN | Cedar, Muscatine | 19 min |
| Jul 11, 1:22 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson | 38 min |
| Jul 11, 1:56 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson | 34 min |
| Jul 11, 2:17 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Webster | 43 min |
| Jul 11, 2:32 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson | 28 min |
| Jul 11, 2:44 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Kossuth, Winnebago | 46 min |
| Jul 11, 2:48 PM CDT | Severe Thunderstorm Warning | DMX | Palo Alto | 42 min |
| Jul 11, 2:56 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Hamilton, Story, Webster | 49 min |
| Jul 11, 3:03 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Cerro Gordo, Franklin | 42 min |
| Jul 11, 3:20 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Palo Alto, Pocahontas | 40 min |
| Jul 11, 3:21 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Winnebago, Worth | 39 min |
| Jul 11, 3:23 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer, Butler | 52 min |
| Jul 11, 3:24 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Kossuth, Wright | 51 min |
| Jul 11, 3:53 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 37 min |
| Jul 11, 4:06 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Butler, Grundy | 39 min |
| Jul 11, 4:12 PM CDT | Severe Thunderstorm Warning | ARX | Floyd | 41 min |
| Jul 11, 4:20 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 40 min |
| Jul 11, 4:39 PM CDT | Severe Thunderstorm Warning | DVN | Benton | 36 min |
| Jul 11, 4:44 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Tama | 35 min |
| Jul 11, 4:48 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Butler, Grundy | 24 min |
| Jul 11, 4:50 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan | 40 min |
| Jul 11, 4:56 PM CDT | Severe Thunderstorm Warning | ARX | Mitchell | 35 min |
| Jul 11, 5:01 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Hardin, Marshall, Story | 29 min |
| Jul 11, 5:07 PM CDT | Severe Thunderstorm Warning | DVN | Benton | 38 min |
| Jul 11, 5:11 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Howard | 49 min |
| Jul 11, 5:25 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Johnson, Linn | 50 min |
| Jul 11, 5:28 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Linn | 47 min |
| Jul 11, 5:29 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Story | 46 min |
| Jul 11, 5:40 PM CDT | Severe Thunderstorm Warning | DMX | Marshall, Story | 35 min |
| Jul 11, 6:00 PM CDT | Severe Thunderstorm Warning | DVN | Muscatine | 27 min |
| Jul 11, 6:03 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Poweshiek, Story | 27 min |
| Jul 11, 6:07 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson, Jones, Linn | 38 min |
| Jul 11, 6:09 PM CDT | Severe Thunderstorm Warning | DVN | Johnson | 51 min |
| Jul 11, 6:18 PM CDT | Severe Thunderstorm Warning | DVN | Iowa | 42 min |
| Jul 11, 6:30 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Poweshiek | 17 min |
| Jul 11, 6:34 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Jones, Muscatine, Scott | 41 min |
| Jul 11, 6:46 PM CDT | Severe Thunderstorm Warning | DVN | Johnson, Louisa, Muscatine, Washington | 44 min |
| Jul 11, 6:52 PM CDT | Severe Thunderstorm Warning | DVN | Keokuk, Washington | 53 min |
| Jul 11, 7:13 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 15 min |
| Jul 11, 7:25 PM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Keokuk | 50 min |
| Jul 11, 7:31 PM CDT | Severe Thunderstorm Warning | DMX | Marion, Warren | 30 min |
| Jul 11, 7:33 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 29 min |
| Jul 11, 8:14 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Lucas, Wayne | 28 min |
| Jul 14, 6:10 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Hamilton, Story | 50 min |
| Jul 14, 6:33 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton | 24 min |
| Jul 14, 6:56 PM CDT | Severe Thunderstorm Warning | DMX | Grundy, Hardin | 49 min |
| Jul 14, 7:16 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Polk | 44 min |
| Jul 14, 7:55 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Polk, Warren | 50 min |
| Jul 14, 8:36 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Marion | 24 min |
| Jul 14, 8:40 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion, Warren | 35 min |
| Jul 14, 8:56 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion | 34 min |
| Jul 14, 9:09 PM CDT | Severe Thunderstorm Warning | DMX | Marion, Warren | 51 min |
| Jul 14, 9:20 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion | 40 min |
| Jul 14, 9:35 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Marion, Monroe | 40 min |
| Jul 14, 11:00 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold, Union | 30 min |
| Jul 19, 7:36 AM CDT | Severe Thunderstorm Warning | DVN | Henry, Jefferson, Lee, Van Buren | 39 min |
| Jul 19, 8:03 AM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Lee | 42 min |
| Jul 19, 8:40 AM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Louisa | 35 min |
| Jul 26, 5:09 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Jones | 51 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Black Hawk County11
- Jones County9
- Cedar County9
- Linn County8
- Muscatine County7
- Marion County7
- Grundy County6
- Scott County6
- Hancock County6
- Cerro Gordo County6
- Bremer County6
- Story County6
- Jasper County6
- Clinton County5
- Butler County5
- Benton County5
- Johnson County5
- Louisa County5
- Hamilton County5
- Kossuth County4
- Winnebago County4
- Worth County4
- Buchanan County4
- Marshall County4
- Warren County4
- Jackson County3
- Tama County3
- Mitchell County3
- Dubuque County3
- Chickasaw County3
- Fayette County3
- Delaware County3
- Des Moines County3
- Dickinson County3
- Mahaska County3
- Fremont County2
- Page County2
- Pocahontas County2
- Humboldt County2
- Wright County2
33 more counties
- Franklin County2
- Floyd County2
- Winneshiek County2
- Clayton County2
- Howard County2
- Webster County2
- Palo Alto County2
- Boone County2
- Hardin County2
- Iowa County2
- Poweshiek County2
- Washington County2
- Keokuk County2
- Jefferson County2
- Lucas County2
- Dallas County2
- Polk County2
- Henry County2
- Lee County2
- Plymouth County1
- Woodbury County1
- Allamakee County1
- Harrison County1
- Monona County1
- Pottawattamie County1
- Clay County1
- Clarke County1
- Decatur County1
- Wayne County1
- Monroe County1
- Ringgold County1
- Union County1
- Van Buren County1
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.