Alert archive / Iowa / Mesoscale Discussions / 2024

Mesoscale Discussions in Iowa, May 2024

31 mesoscale discussions in May 2024. 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 May 2024. Tap one for its archive.

Mesoscale Discussions
31
Busiest day
May 21, 202411 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
Apr 30, 7:55 PM CDTMesoscale DiscussionSPCAppanoose, Davis, Des Moines, Henry, Jefferson, Keokuk and 7 more95 min
May 2, 2:38 AM CDTMesoscale DiscussionSPCFremont67 min
May 6, 3:07 PM CDTMesoscale DiscussionSPCFremont113 min
May 6, 6:18 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Buena Vista, Calhoun, Carroll and 13 more117 min
May 6, 8:06 PM CDTMesoscale DiscussionSPCFremont84 min
May 6, 9:16 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Calhoun, Carroll and 17 more119 min
May 6, 11:56 PM CDTMesoscale DiscussionSPCAppanoose, Davis, Van Buren94 min
May 7, 5:24 PM CDTMesoscale DiscussionSPCAllamakee, Cedar, Clayton, Clinton, Delaware, Dubuque and 5 more96 min
May 8, 2:17 PM CDTMesoscale DiscussionSPCBuena Vista, Carroll, Cherokee, Clay, Crawford, Dickinson and 13 more88 min
May 10, 6:32 PM CDTMesoscale DiscussionSPCAllamakee58 min
May 19, 4:32 PM CDTMesoscale DiscussionSPCCedar, Clinton, Iowa, Johnson, Jones, Keokuk and 7 more118 min
May 19, 5:55 PM CDTMesoscale DiscussionSPCAdams, Decatur, Fremont, Mills, Montgomery, Page and 3 more95 min
May 20, 5:54 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Cerro Gordo, Cherokee, Clay, Crawford and 21 more2 hr
May 20, 9:23 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Cerro Gordo, Cherokee, Clay, Dickinson and 20 more97 min
May 20, 10:01 PM CDTMesoscale DiscussionSPCAudubon, Cass, Harrison, Mills, Montgomery, Pottawattamie and 1 more119 min
May 20, 11:34 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Cerro Gordo, Cherokee, Chickasaw, Clay and 18 more86 min
May 21, 2:04 AM CDTMesoscale DiscussionSPCCrawford, Harrison, Mills, Monona, Pottawattamie, Shelby and 1 more116 min
May 21, 5:51 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Benton, Cass and 32 more114 min
May 21, 9:29 AM CDTMesoscale DiscussionSPCBenton, Cedar, Clinton, Delaware, Dubuque, Henry and 23 more91 min
May 21, 10:27 AM CDTMesoscale DiscussionSPCCherokee, Crawford, Fremont, Harrison, Ida, Mills and 5 more2 hr
May 21, 12:32 PM CDTMesoscale DiscussionSPCAdair, Adams, Allamakee, Appanoose, Audubon, Benton and 70 more118 min
May 21, 3:20 PM CDTMesoscale DiscussionSPCAdair, Adams, Clarke, Dallas, Madison, Marion and 3 more85 min
May 21, 5:03 PM CDTMesoscale DiscussionSPCAppanoose, Benton, Black Hawk, Bremer, Buchanan, Butler and 29 more87 min
May 21, 5:09 PM CDTMesoscale DiscussionSPCAllamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 11 more96 min
May 23, 10:38 PM CDTMesoscale DiscussionSPCAudubon, Cherokee, Crawford, Fremont, Harrison, Ida and 7 more2 hr
May 24, 1:15 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Buena Vista, Calhoun and 30 more2 hr
May 24, 3:54 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Boone, Buena Vista and 40 more2 hr
May 24, 5:17 AM CDTMesoscale DiscussionSPCAppanoose, Benton, Black Hawk, Boone, Bremer, Buchanan and 38 more118 min
May 27, 1:10 PM CDTMesoscale DiscussionSPCBenton, Black Hawk, Boone, Bremer, Buchanan, Buena Vista and 50 more95 min
May 27, 5:10 PM CDTMesoscale DiscussionSPCCedar, Clinton, Davis, Delaware, Des Moines, Dubuque and 15 more2 hr
May 28, 1:02 PM CDTMesoscale DiscussionSPCAllamakee, Clayton, Delaware, Dubuque, Jackson3 hr

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 archive20232025

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.