Alert archive / Iowa / Mesoscale Discussions / 2021

Mesoscale Discussions in Iowa, August 2021

38 mesoscale discussions in August 2021. 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 August 2021. Tap one for its archive.

Mesoscale Discussions
38
Busiest day
August 27, 20215 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.

IssuedProductOfficeCountiesLasted
Aug 5, 9:34 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 7 more86 min
Aug 6, 11:54 PM CDTMesoscale DiscussionSPCLyon, Sioux2 hr
Aug 7, 2:10 AM CDTMesoscale DiscussionSPCLyon, Osceola2 hr
Aug 7, 11:03 AM CDTMesoscale DiscussionSPCAllamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 11 more2 hr
Aug 7, 3:46 PM CDTMesoscale DiscussionSPCAllamakee, Bremer, Butler, Cerro Gordo, Chickasaw, Clayton and 7 more119 min
Aug 7, 9:35 PM CDTMesoscale DiscussionSPCAdair, Adams, Cass, Clarke, Decatur, Fremont and 7 more85 min
Aug 7, 11:19 PM CDTMesoscale DiscussionSPCAdair, Adams, Cass, Clarke, Madison, Montgomery and 4 more86 min
Aug 8, 5:04 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Cherokee, Clay, Dickinson, Emmet and 11 more86 min
Aug 8, 11:58 PM CDTMesoscale DiscussionSPCBoone, Hamilton, Polk, Story2 hr
Aug 10, 1:12 PM CDTMesoscale DiscussionSPCAppanoose, Benton, Black Hawk, Bremer, Buchanan, Butler and 35 more93 min
Aug 10, 5:51 PM CDTMesoscale DiscussionSPCCedar, Clinton, Jackson, Jones, Muscatine, Scott84 min
Aug 11, 6:26 AM CDTMesoscale DiscussionSPCDes Moines, Lee2 hr
Aug 11, 11:48 AM CDTMesoscale DiscussionSPCAllamakee117 min
Aug 11, 3:56 PM CDTMesoscale DiscussionSPCAppanoose, Benton, Buchanan, Cedar, Clinton, Davis and 21 more3 hr
Aug 11, 5:40 PM CDTMesoscale DiscussionSPCBenton, Cedar, Clinton, Delaware, Dubuque, Iowa and 5 more95 min
Aug 11, 7:35 PM CDTMesoscale DiscussionSPCClinton, Jackson, Scott85 min
Aug 20, 1:51 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Crawford, Fremont, Harrison, Ida and 9 more84 min
Aug 20, 7:06 PM CDTMesoscale DiscussionSPCFremont, Mills, Montgomery, Page84 min
Aug 24, 6:00 AM CDTMesoscale DiscussionSPCAllamakee, Cerro Gordo, Chickasaw, Clayton, Dubuque, Fayette and 6 more90 min
Aug 24, 12:44 PM CDTMesoscale DiscussionSPCAllamakee, Bremer, Butler, Chickasaw, Clayton, Fayette and 4 more91 min
Aug 24, 5:10 PM CDTMesoscale DiscussionSPCBenton, Cedar, Clinton, Iowa, Jackson, Jasper and 7 more2 hr
Aug 25, 3:02 PM CDTMesoscale DiscussionSPCLyon, Plymouth, Sioux88 min
Aug 26, 7:37 AM CDTMesoscale DiscussionSPCAdair, Audubon, Boone, Buena Vista, Calhoun, Carroll and 20 more83 min
Aug 26, 9:40 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Benton, Boone, Clarke and 25 more95 min
Aug 26, 1:12 PM CDTMesoscale DiscussionSPCAllamakee, Winneshiek93 min
Aug 26, 5:34 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Crawford, Harrison, Ida and 9 more116 min
Aug 26, 10:45 PM CDTMesoscale DiscussionSPCBremer, Buena Vista, Butler, Calhoun, Cerro Gordo, Cherokee and 25 more2 hr
Aug 27, 1:53 PM CDTMesoscale DiscussionSPCBlack Hawk, Bremer, Butler, Calhoun, Cerro Gordo, Chickasaw and 18 more97 min
Aug 27, 4:01 PM CDTMesoscale DiscussionSPCAllamakee, Black Hawk, Bremer, Butler, Calhoun, Cerro Gordo and 20 more59 min
Aug 27, 5:30 PM CDTMesoscale DiscussionSPCAllamakee, Cerro Gordo, Chickasaw, Floyd, Howard, Winneshiek60 min
Aug 27, 6:28 PM CDTMesoscale DiscussionSPCAudubon, Calhoun, Carroll, Crawford, Greene, Guthrie and 6 more92 min
Aug 27, 7:59 PM CDTMesoscale DiscussionSPCAllamakee, Clayton, Fayette2 hr
Aug 27, 9:57 PM CDTMesoscale DiscussionSPCAllamakee, Bremer, Chickasaw, Clayton, Fayette, Floyd and 3 more93 min
Aug 28, 2:43 PM CDTMesoscale DiscussionSPCLyon, Osceola, Plymouth, Sioux3 hr
Aug 28, 5:27 PM CDTMesoscale DiscussionSPCEmmet63 min
Aug 28, 9:57 PM CDTMesoscale DiscussionSPCAudubon, Buena Vista, Calhoun, Carroll, Cerro Gordo, Crawford and 19 more63 min
Aug 30, 11:35 PM CDTMesoscale DiscussionSPCHarrison85 min
Aug 31, 3:02 AM CDTMesoscale DiscussionSPCAdams, Cass, Fremont, Harrison, Mills, Montgomery and 5 more118 min

By county

Every county with at least one alert. A county page lists each alert that covered it.

59 more counties

Nearby

Alerts in force nowTornadoes on recordThe radar archive20202022

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.