Alert archive / Iowa / Mesoscale Discussions / 2021

Mesoscale Discussions in Iowa, June 2021

30 mesoscale discussions in June 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 June 2021. Tap one for its archive.

Mesoscale Discussions
30
Busiest day
June 20, 20217 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
Jun 11, 7:28 AM CDTMesoscale DiscussionSPCHarrison, Mills, Monona, Pottawattamie92 min
Jun 11, 9:35 AM CDTMesoscale DiscussionSPCBoone, Bremer, Butler, Calhoun, Cerro Gordo, Chickasaw and 19 more115 min
Jun 16, 6:26 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Carroll, Cherokee, Clay, Crawford and 16 more2 hr
Jun 16, 9:34 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Buena Vista, Calhoun, Carroll and 13 more116 min
Jun 16, 11:49 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Cass, Clarke, Dallas and 9 more86 min
Jun 17, 2:57 PM CDTMesoscale DiscussionSPCAllamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 17 more63 min
Jun 17, 7:02 PM CDTMesoscale DiscussionSPCAllamakee, Howard, Mitchell, Winnebago, Winneshiek, Worth88 min
Jun 17, 9:01 PM CDTMesoscale DiscussionSPCAllamakee, Howard, Mitchell, Winneshiek89 min
Jun 17, 10:52 PM CDTMesoscale DiscussionSPCAllamakee, Howard, Winneshiek83 min
Jun 18, 1:34 AM CDTMesoscale DiscussionSPCAllamakee116 min
Jun 18, 9:27 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Cass, Clarke, Davis and 31 more2 hr
Jun 19, 2:10 AM CDTMesoscale DiscussionSPCDavis, Des Moines, Henry, Jefferson, Lee, Van Buren and 1 more2 hr
Jun 19, 11:09 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Cass, Fremont, Guthrie and 10 more96 min
Jun 20, 3:37 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Cass, Clarke and 12 more113 min
Jun 20, 10:57 AM CDTMesoscale DiscussionSPCDes Moines, Henry, Lee, Louisa, Scott2 hr
Jun 20, 1:10 PM CDTMesoscale DiscussionSPCBoone, Butler, Calhoun, Cerro Gordo, Emmet, Floyd and 17 more95 min
Jun 20, 2:02 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Boone, Cass, Clarke and 22 more118 min
Jun 20, 5:22 PM CDTMesoscale DiscussionSPCAllamakee, Black Hawk, Bremer, Buchanan, Butler, Chickasaw and 9 more113 min
Jun 20, 6:56 PM CDTMesoscale DiscussionSPCAppanoose, Clarke, Davis, Decatur, Des Moines, Henry and 15 more2 hr
Jun 22, 3:41 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Buena Vista, Calhoun and 34 more2 hr
Jun 22, 6:51 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Boone, Calhoun and 36 more54 min
Jun 23, 8:10 PM CDTMesoscale DiscussionSPCMonona, Plymouth, Woodbury95 min
Jun 23, 10:12 PM CDTMesoscale DiscussionSPCHarrison, Mills, Monona, Pottawattamie93 min
Jun 24, 1:36 AM CDTMesoscale DiscussionSPCAdams, Cass, Fremont, Harrison, Mills, Montgomery and 4 more114 min
Jun 24, 5:02 AM CDTMesoscale DiscussionSPCAppanoose, Clarke, Davis, Decatur, Lucas, Madison and 8 more118 min
Jun 24, 5:30 PM CDTMesoscale DiscussionSPCFremont, Page60 min
Jun 24, 6:19 PM CDTMesoscale DiscussionSPCAppanoose, Clarke, Davis, Decatur, Lucas, Monroe and 3 more56 min
Jun 24, 7:29 PM CDTMesoscale DiscussionSPCFremont, Page, Ringgold, Taylor61 min
Jun 24, 11:23 PM CDTMesoscale DiscussionSPCLee2 hr
Jun 25, 1:00 PM CDTMesoscale DiscussionSPCBenton, Black Hawk, Boone, Buchanan, Buena Vista, Butler and 29 more2 hr

By county

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

58 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. Warning verification from the Mesonet's Cow. Rebuilt daily.