Alert archive / Iowa / Mesoscale Discussions / 2025

Mesoscale Discussions in Iowa, August 2025

22 mesoscale discussions in August 2025. 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 2025. Tap one for its archive.

Mesoscale Discussions
22
Busiest day
August 9, 20256 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, 11:33 PM CDTMesoscale DiscussionSPCLyon, O'Brien, Osceola, Plymouth, Sioux117 min
Aug 8, 11:25 PM CDTMesoscale DiscussionSPCDickinson, Emmet, Lyon, Osceola2 hr
Aug 9, 2:40 AM CDTMesoscale DiscussionSPCBuena Vista, Cerro Gordo, Cherokee, Clay, Dickinson, Emmet and 10 more95 min
Aug 9, 5:31 AM CDTMesoscale DiscussionSPCAdair, Audubon, Boone, Calhoun, Carroll, Cass and 21 more89 min
Aug 9, 7:29 AM CDTMesoscale DiscussionSPCAdair, Audubon, Boone, Bremer, Butler, Calhoun and 30 more2 hr
Aug 9, 10:03 AM CDTMesoscale DiscussionSPCAllamakee, Chickasaw, Clayton, Fayette, Howard, Winneshiek87 min
Aug 9, 2:54 PM CDTMesoscale DiscussionSPCCedar, Clinton, Davis, Des Moines, Henry, Jefferson and 5 more96 min
Aug 10, 1:44 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Boone, Cass, Clarke and 23 more2 hr
Aug 10, 4:59 AM CDTMesoscale DiscussionSPCAdair, Black Hawk, Boone, Butler, Cass, Dallas and 12 more91 min
Aug 11, 9:57 PM CDTMesoscale DiscussionSPCAppanoose, Davis, Des Moines, Henry, Jefferson, Johnson and 9 more2 hr
Aug 15, 11:51 AM CDTMesoscale DiscussionSPCBenton, Black Hawk, Boone, Bremer, Buena Vista, Butler and 32 more114 min
Aug 15, 1:41 PM CDTMesoscale DiscussionSPCAllamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 31 more94 min
Aug 15, 3:32 PM CDTMesoscale DiscussionSPCAllamakee, Benton, Black Hawk, Bremer, Buchanan, Cedar and 20 more88 min
Aug 15, 5:52 PM CDTMesoscale DiscussionSPCBenton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 17 more83 min
Aug 16, 2:18 AM CDTMesoscale DiscussionSPCLyon87 min
Aug 16, 2:05 PM CDTMesoscale DiscussionSPCAllamakee, Chickasaw, Floyd, Howard, Mitchell, Winneshiek85 min
Aug 16, 8:06 PM CDTMesoscale DiscussionSPCClayton, Dubuque84 min
Aug 17, 3:51 PM CDTMesoscale DiscussionSPCBenton, Black Hawk, Bremer, Buchanan, Butler, Cedar and 15 more84 min
Aug 17, 6:43 PM CDTMesoscale DiscussionSPCBlack Hawk, Bremer, Buchanan, Butler, Cerro Gordo, Chickasaw and 15 more2 hr
Aug 18, 1:50 AM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Crawford, Dickinson, Harrison and 11 more85 min
Aug 18, 3:51 PM CDTMesoscale DiscussionSPCAppanoose, Cedar, Clinton, Davis, Des Moines, Henry and 15 more84 min
Aug 22, 2:31 PM CDTMesoscale DiscussionSPCCherokee, Crawford, Harrison, Ida, Monona, Plymouth and 3 more119 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 archive20242026

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.