Alert archive / Iowa / Mesoscale Discussions / 2004
Mesoscale Discussions in Iowa, April 2004
13 mesoscale discussions in April 2004. 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 mesoscale discussions reaches back to 2003.
Mesoscale Discussions by county
Each county as a circle sized by its count in April 2004. Tap one for its archive.
- Mesoscale Discussions
- 13
- Busiest day
- April 18, 20044 mesoscale discussions
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 |
|---|---|---|---|---|
| Apr 16, 2:51 PM CDT | Mesoscale Discussion | SPC | Allamakee, Bremer, Buena Vista, Butler, Calhoun, Carroll and 33 more | 114 min |
| Apr 16, 7:17 PM CDT | Mesoscale Discussion | SPC | Audubon, Black Hawk, Boone, Bremer, Buena Vista, Butler and 29 more | 88 min |
| Apr 17, 5:03 PM CDT | Mesoscale Discussion | SPC | Boone, Buena Vista, Butler, Calhoun, Carroll, Cerro Gordo and 30 more | 2 hr |
| Apr 17, 9:31 PM CDT | Mesoscale Discussion | SPC | Allamakee, Cerro Gordo, Chickasaw, Emmet, Fayette, Floyd and 8 more | 119 min |
| Apr 17, 11:10 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Cherokee, Clay, Dickinson, Lyon, O'Brien and 3 more | 95 min |
| Apr 17, 11:50 PM CDT | Mesoscale Discussion | SPC | Cerro Gordo, Emmet, Hancock, Howard, Humboldt, Kossuth and 5 more | 85 min |
| Apr 18, 4:15 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Calhoun, Cerro Gordo, Cherokee, Clay, Dickinson and 20 more | 60 min |
| Apr 18, 7:05 PM CDT | Mesoscale Discussion | SPC | Audubon, Buena Vista, Calhoun, Carroll, Cass, Cherokee and 29 more | 115 min |
| Apr 18, 11:12 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Allamakee, Audubon, Benton, Black Hawk and 48 more | 93 min |
| Apr 20, 6:00 PM CDT | Mesoscale Discussion | SPC | Scott | 2 hr |
| Apr 20, 7:20 PM CDT | Mesoscale Discussion | SPC | Appanoose, Clarke, Dallas, Davis, Decatur, Henry and 19 more | 115 min |
| Apr 20, 8:06 PM CDT | Mesoscale Discussion | SPC | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 84 min |
| Apr 21, 3:04 PM CDT | Mesoscale Discussion | SPC | Harrison, Lyon, Monona, Plymouth, Sioux, Woodbury | 2 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Hancock County8
- Worth County8
- Cerro Gordo County7
- Humboldt County7
- Kossuth County7
- Palo Alto County7
- Winnebago County7
- Buena Vista County6
- Calhoun County6
- Emmet County6
- Floyd County6
- Mitchell County6
- Plymouth County6
- Pocahontas County6
- Webster County6
- Wright County6
- Carroll County5
- Cherokee County5
- Clay County5
- Dickinson County5
- Franklin County5
- Greene County5
- Harrison County5
- Howard County5
- Monona County5
- O'Brien County5
- Sac County5
- Shelby County5
- Sioux County5
- Butler County4
- Chickasaw County4
- Crawford County4
- Hamilton County4
- Hardin County4
- Ida County4
- Woodbury County4
- Lyon County4
- Osceola County4
- Allamakee County3
- Bremer County3
49 more counties
- Fayette County3
- Winneshiek County3
- Audubon County3
- Boone County3
- Dallas County3
- Jasper County3
- Polk County3
- Story County3
- Fremont County3
- Mills County3
- Montgomery County3
- Pottawattamie County3
- Black Hawk County2
- Grundy County2
- Guthrie County2
- Marshall County2
- Tama County2
- Cass County2
- Clarke County2
- Madison County2
- Marion County2
- Page County2
- Poweshiek County2
- Ringgold County2
- Union County2
- Warren County2
- Adair County1
- Adams County1
- Benton County1
- Buchanan County1
- Clayton County1
- Delaware County1
- Taylor County1
- Scott County1
- Appanoose County1
- Davis County1
- Decatur County1
- Henry County1
- Iowa County1
- Jefferson County1
- Johnson County1
- Keokuk County1
- Lucas County1
- Mahaska County1
- Monroe County1
- Van Buren County1
- Wapello County1
- Washington County1
- Wayne County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20032005
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.