Alert archive / Iowa / Severe Thunderstorm Warnings / 2018
Severe Thunderstorm Warnings in Iowa, July 2018
60 severe thunderstorm warnings in July 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 severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in July 2018. Tap one for its archive.
- Severe Thunderstorm Warnings
- 60
- Busiest day
- July 13, 201819 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 |
|---|---|---|---|---|
| Jun 30, 7:03 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Grundy, Marshall, Tama | 57 min |
| Jun 30, 7:05 PM CDT | Severe Thunderstorm Warning | DMX | Polk, Story | 40 min |
| Jun 30, 7:24 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Polk, Story | 36 min |
| Jun 30, 7:34 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan | 41 min |
| Jun 30, 7:54 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Audubon, Cass, Guthrie | 35 min |
| Jun 30, 8:14 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Dallas, Guthrie, Madison | 46 min |
| Jun 30, 8:45 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Guthrie, Madison | 30 min |
| Jun 30, 9:04 PM CDT | Severe Thunderstorm Warning | DMX | Polk, Warren | 41 min |
| Jun 30, 9:08 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Boone, Dallas, Greene, Guthrie, Madison | 28 min |
| Jun 30, 9:11 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Madison, Marion, Polk, Warren | 34 min |
| Jun 30, 9:58 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Marion, Polk, Warren | 47 min |
| Jul 4, 10:22 AM CDT | Severe Thunderstorm Warning | FSD | Dickinson, Osceola | 23 min |
| Jul 4, 10:36 AM CDT | Severe Thunderstorm Warning | FSD | Dickinson, Osceola | 39 min |
| Jul 4, 11:07 AM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson | 38 min |
| Jul 4, 1:03 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth, Winnebago | 42 min |
| Jul 4, 5:35 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien, Plymouth, Sioux | 40 min |
| Jul 4, 6:17 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee, Clay, O'Brien | 28 min |
| Jul 4, 6:46 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Clay | 29 min |
| Jul 4, 7:50 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Kossuth, Palo Alto, Pocahontas, Webster | 25 min |
| Jul 4, 9:10 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 50 min |
| Jul 4, 9:45 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Mills, Pottawattamie | 45 min |
| Jul 4, 9:59 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 47 min |
| Jul 10, 11:01 AM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson | 29 min |
| Jul 10, 11:07 AM CDT | Severe Thunderstorm Warning | DMX | Palo Alto, Pocahontas | 38 min |
| Jul 10, 11:44 AM CDT | Severe Thunderstorm Warning | DMX | Palo Alto, Pocahontas | 46 min |
| Jul 10, 12:31 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas | 44 min |
| Jul 13, 12:05 PM CDT | Severe Thunderstorm Warning | DMX | Sac | 40 min |
| Jul 13, 12:30 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas, Sac | 45 min |
| Jul 13, 1:08 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Humboldt, Kossuth, Pocahontas, Webster | 52 min |
| Jul 13, 3:05 PM CDT | Severe Thunderstorm Warning | ARX | Floyd, Mitchell | 55 min |
| Jul 13, 3:57 PM CDT | Severe Thunderstorm Warning | ARX | Howard | 48 min |
| Jul 13, 4:07 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson, Louisa, Muscatine, Washington | 32 min |
| Jul 13, 4:22 PM CDT | Severe Thunderstorm Warning | ARX | Winneshiek | 53 min |
| Jul 13, 4:38 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Monroe, Wapello | 52 min |
| Jul 13, 4:51 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware | 39 min |
| Jul 13, 4:58 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 62 min |
| Jul 13, 4:58 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Poweshiek | 62 min |
| Jul 13, 5:21 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Linn | 39 min |
| Jul 13, 5:29 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 61 min |
| Jul 13, 5:29 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Keokuk, Washington | 29 min |
| Jul 13, 5:31 PM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque | 59 min |
| Jul 13, 5:37 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 38 min |
| Jul 13, 5:58 PM CDT | Severe Thunderstorm Warning | DVN | Jones, Linn | 47 min |
| Jul 13, 6:01 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 44 min |
| Jul 13, 6:15 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Dubuque, Jackson | 60 min |
| Jul 19, 4:05 PM CDT | Severe Thunderstorm Warning | DVN | Jones | 25 min |
| Jul 19, 4:18 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 42 min |
| Jul 19, 4:50 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson, Jones | 25 min |
| Jul 19, 5:55 PM CDT | Severe Thunderstorm Warning | DMX | Davis, Wapello | 20 min |
| Jul 19, 8:06 PM CDT | Severe Thunderstorm Warning | DVN | Lee | 39 min |
| Jul 25, 4:39 PM CDT | Severe Thunderstorm Warning | DMX | Winnebago, Worth | 51 min |
| Jul 25, 5:43 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson | 21 min |
| Jul 25, 5:44 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth, Winnebago | 46 min |
| Jul 25, 6:05 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth, Palo Alto | 40 min |
| Jul 25, 6:18 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock, Winnebago, Worth | 42 min |
| Jul 25, 6:48 PM CDT | Severe Thunderstorm Warning | ARX | Floyd, Mitchell | 41 min |
| Jul 25, 7:02 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 28 min |
| Jul 25, 7:37 PM CDT | Severe Thunderstorm Warning | DMX | Franklin, Hancock, Wright | 38 min |
| Jul 25, 7:54 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Webster, Wright | 29 min |
| Jul 25, 8:34 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton | 26 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Pocahontas County6
- Polk County5
- Dickinson County5
- Kossuth County5
- Adair County4
- Guthrie County4
- Madison County4
- Mahaska County4
- Clay County4
- Winnebago County4
- Palo Alto County4
- Clinton County4
- Warren County3
- Humboldt County3
- Webster County3
- Harrison County3
- Calhoun County3
- Jones County3
- Marshall County2
- Story County2
- Jasper County2
- Benton County2
- Buchanan County2
- Dallas County2
- Marion County2
- Osceola County2
- Cherokee County2
- O'Brien County2
- Buena Vista County2
- Pottawattamie County2
- Sac County2
- Floyd County2
- Mitchell County2
- Washington County2
- Wapello County2
- Delaware County2
- Linn County2
- Dubuque County2
- Scott County2
- Jackson County2
33 more counties
- Worth County2
- Cerro Gordo County2
- Hancock County2
- Wright County2
- Black Hawk County1
- Grundy County1
- Tama County1
- Audubon County1
- Cass County1
- Boone County1
- Greene County1
- Clarke County1
- Plymouth County1
- Sioux County1
- Mills County1
- Shelby County1
- Howard County1
- Cedar County1
- Johnson County1
- Louisa County1
- Muscatine County1
- Winneshiek County1
- Monroe County1
- Allamakee County1
- Poweshiek County1
- Clayton County1
- Iowa County1
- Keokuk County1
- Davis County1
- Lee County1
- Emmet County1
- Franklin County1
- Hamilton County1
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.