Alert archive / Iowa / Mesoscale Discussions / 2012

Mesoscale Discussions in Iowa, May 2012

49 mesoscale discussions in May 2012. 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 2012. Tap one for its archive.

Mesoscale Discussions
49
Busiest day
May 5, 20126 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
May 1, 2:30 PM CDTMesoscale DiscussionSPCCherokee, Clay, Dickinson, Emmet, Lyon, O'Brien and 4 more60 min
May 1, 6:11 PM CDTMesoscale DiscussionSPCClay, Dickinson, Emmet, Kossuth, Lyon, O'Brien and 3 more94 min
May 1, 7:30 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Harrison, Ida, Monona, Plymouth and 1 more2 hr
May 1, 11:08 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Black Hawk, Boone, Bremer and 47 more2 hr
May 2, 2:02 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Carroll, Cass and 22 more58 min
May 2, 3:34 PM CDTMesoscale DiscussionSPCClay, Dickinson, Emmet, Lyon, O'Brien, Osceola and 2 more86 min
May 2, 10:43 PM CDTMesoscale DiscussionSPCHarrison, Monona, Plymouth, Sioux, Woodbury62 min
May 3, 3:05 AM CDTMesoscale DiscussionSPCAdair, Adams, Cass, Clarke, Decatur, Montgomery and 4 more85 min
May 3, 2:12 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Cerro Gordo, Cherokee, Clay, Dickinson and 18 more2 hr
May 3, 3:41 PM CDTMesoscale DiscussionSPCAdair, Adams, Cass, Clarke, Fremont, Madison and 7 more2 hr
May 3, 6:42 PM CDTMesoscale DiscussionSPCAppanoose, Davis, Decatur, Des Moines, Henry, Lee and 5 more63 min
May 3, 11:18 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Cass, Cedar, Clarke and 23 more27 min
May 4, 2:16 AM CDTMesoscale DiscussionSPCAppanoose, Davis, Decatur, Des Moines, Henry, Jefferson and 9 more119 min
May 4, 1:50 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Emmet, Ida and 7 more25 min
May 4, 3:52 PM CDTMesoscale DiscussionSPCBuena Vista, Cerro Gordo, Cherokee, Clay, Dickinson, Emmet and 17 more53 min
May 4, 5:31 PM CDTMesoscale DiscussionSPCAudubon, Benton, Black Hawk, Boone, Bremer, Buchanan and 66 more29 min
May 4, 8:30 PM CDTMesoscale DiscussionSPCAllamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 10 more60 min
May 4, 9:54 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Crawford, Harrison, Ida, Monona and 5 more96 min
May 5, 2:09 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Carroll, Cherokee, Clay, Crawford and 8 more96 min
May 5, 2:58 PM CDTMesoscale DiscussionSPCAllamakee, Dickinson, Emmet, Howard, Kossuth, Mitchell and 3 more62 min
May 5, 3:52 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Carroll, Cherokee, Clay, Crawford and 8 more83 min
May 5, 4:56 PM CDTMesoscale DiscussionSPCBremer, Buchanan, Clayton, Delaware, Dubuque, Fayette and 1 more94 min
May 5, 11:31 PM CDTMesoscale DiscussionSPCLyon89 min
May 6, 2:12 AM CDTMesoscale DiscussionSPCBuena Vista, Butler, Cerro Gordo, Cherokee, Clay, Dickinson and 17 more63 min
May 6, 4:55 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Cass, Fremont, Guthrie and 8 more2 hr
May 6, 8:40 AM CDTMesoscale DiscussionSPCCedar, Clinton, Des Moines, Henry, Iowa, Jefferson and 9 more65 min
May 6, 3:56 PM CDTMesoscale DiscussionSPCLee64 min
May 15, 2:51 PM CDTMesoscale DiscussionSPCBenton, Cedar, Clinton, Delaware, Dubuque, Iowa and 12 more54 min
May 15, 4:58 PM CDTMesoscale DiscussionSPCCedar, Clinton, Jackson, Jones, Linn62 min
May 19, 2:36 PM CDTMesoscale DiscussionSPCFremont, Harrison, Mills, Pottawattamie84 min
May 19, 5:41 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Crawford, Harrison, Ida and 10 more64 min
May 19, 8:11 PM CDTMesoscale DiscussionSPCAudubon, Buena Vista, Calhoun, Carroll, Cass, Cherokee and 13 more64 min
May 19, 9:18 PM CDTMesoscale DiscussionSPCMills, Pottawattamie57 min
May 19, 10:33 PM CDTMesoscale DiscussionSPCAudubon, Buena Vista, Calhoun, Carroll, Cass, Cherokee and 20 more57 min
May 23, 2:56 PM CDTMesoscale DiscussionSPCBuena Vista, Carroll, Cherokee, Clay, Crawford, Harrison and 11 more94 min
May 23, 6:49 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Cherokee, Clay, Crawford, Dickinson and 11 more86 min
May 23, 8:56 PM CDTMesoscale DiscussionSPCAudubon, Buena Vista, Calhoun, Carroll, Cass, Cherokee and 23 more94 min
May 24, 6:33 AM CDTMesoscale DiscussionSPCAllamakee, Black Hawk, Bremer, Buchanan, Chickasaw, Clayton and 8 more57 min
May 24, 1:34 PM CDTMesoscale DiscussionSPCAllamakee, Black Hawk, Bremer, Butler, Cerro Gordo, Chickasaw and 10 more116 min
May 24, 3:06 PM CDTMesoscale DiscussionSPCAllamakee, Appanoose, Benton, Black Hawk, Bremer, Buchanan and 38 more114 min
May 24, 5:42 PM CDTMesoscale DiscussionSPCAllamakee, Appanoose, Benton, Black Hawk, Buchanan, Cedar and 24 more2 hr
May 25, 3:09 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Benton, Boone and 43 more2 hr
May 25, 9:17 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Calhoun, Carroll and 30 more88 min
May 26, 12:46 AM CDTMesoscale DiscussionSPCAllamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 44 more89 min
May 27, 2:58 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Crawford, Dickinson, Emmet and 13 more62 min
May 27, 6:55 PM CDTMesoscale DiscussionSPCCherokee, Clay, Dickinson, Emmet, Ida, Lyon and 6 more2 hr
May 27, 9:51 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Emmet, Ida and 5 more84 min
May 28, 12:00 PM CDTMesoscale DiscussionSPCClayton, Dubuque60 min
May 28, 4:59 PM CDTMesoscale DiscussionSPCDes Moines, Lee, Scott91 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 archive20112013

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.