Alert archive / Iowa / Mesoscale Discussions / 2004

Mesoscale Discussions in Iowa, May 2004

84 mesoscale discussions in May 2004. 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 2004. Tap one for its archive.

Mesoscale Discussions
84
Busiest day
May 21, 20049 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 2, 9:49 AM CDTMesoscale DiscussionSPCDes Moines, Louisa116 min
May 6, 12:59 AM CDTMesoscale DiscussionSPCAllamakee, Bremer, Butler, Cerro Gordo, Chickasaw, Clay and 16 more2 hr
May 6, 11:53 PM CDTMesoscale DiscussionSPCAdair, Benton, Black Hawk, Boone, Buchanan, Cedar and 34 more97 min
May 7, 4:24 AM CDTMesoscale DiscussionSPCCedar, Clinton, Jackson, Johnson, Jones, Louisa and 3 more96 min
May 7, 11:44 AM CDTMesoscale DiscussionSPCCedar, Clinton, Jackson, Johnson, Jones, Linn and 2 more2 hr
May 7, 2:26 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Buena Vista, Calhoun, Carroll and 26 more3 hr
May 7, 4:33 PM CDTMesoscale DiscussionSPCClayton, Clinton, Delaware, Dubuque, Jackson, Jones87 min
May 7, 8:20 PM CDTMesoscale DiscussionSPCAllamakee, Benton, Buchanan, Clayton, Delaware, Dubuque and 5 more85 min
May 7, 9:53 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Cerro Gordo, Cherokee, Clay, Crawford and 21 more97 min
May 8, 12:26 AM CDTMesoscale DiscussionSPCAllamakee, Clayton, Winneshiek64 min
May 8, 2:27 AM CDTMesoscale DiscussionSPCBlack Hawk, Boone, Bremer, Buena Vista, Butler, Calhoun and 27 more93 min
May 8, 3:36 AM CDTMesoscale DiscussionSPCAllamakee, Winneshiek54 min
May 8, 5:35 AM CDTMesoscale DiscussionSPCAllamakee, Winneshiek55 min
May 8, 2:27 PM CDTMesoscale DiscussionSPCAdair, Audubon, Black Hawk, Boone, Bremer, Buena Vista and 37 more3 hr
May 8, 5:45 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Benton, Boone, Buena Vista and 33 more2 hr
May 8, 7:54 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Carroll, Cass, Clarke and 19 more2 hr
May 8, 10:44 PM CDTMesoscale DiscussionSPCAdair, Adams, Cass, Clarke, Decatur, Fremont and 12 more2 hr
May 9, 1:22 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Cass, Cedar, Clarke and 30 more23 min
May 9, 4:46 PM CDTMesoscale DiscussionSPCAllamakee, Buchanan, Clayton, Clinton, Delaware, Dubuque and 4 more59 min
May 9, 5:38 PM CDTMesoscale DiscussionSPCDickinson, Emmet, Lyon, Osceola, Sioux2 hr
May 9, 8:09 PM CDTMesoscale DiscussionSPCDickinson, Emmet, Howard, Lyon, Mitchell, Osceola and 2 more2 hr
May 10, 11:05 AM CDTMesoscale DiscussionSPCCedar, Clinton, Dubuque, Jackson, Jones, Louisa and 2 more115 min
May 12, 11:29 AM CDTMesoscale DiscussionSPCAllamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 12 more2 hr
May 12, 2:22 PM CDTMesoscale DiscussionSPCAllamakee, Bremer, Butler, Cerro Gordo, Chickasaw, Clayton and 8 more83 min
May 12, 3:37 PM CDTMesoscale DiscussionSPCAllamakee, Bremer, Butler, Cerro Gordo, Chickasaw, Clayton and 10 more83 min
May 12, 5:22 PM CDTMesoscale DiscussionSPCAllamakee, Clayton, Fayette53 min
May 16, 1:13 PM CDTMesoscale DiscussionSPCLyon2 hr
May 16, 8:21 PM CDTMesoscale DiscussionSPCEmmet114 min
May 16, 9:26 PM CDTMesoscale DiscussionSPCAdams, Audubon, Buena Vista, Calhoun, Carroll, Cass and 28 more3 hr
May 17, 12:41 PM CDTMesoscale DiscussionSPCBenton, Buchanan, Clayton, Delaware, Dubuque, Jackson and 2 more3 hr
May 17, 1:42 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Carroll, Cherokee, Crawford, Harrison and 4 more2 hr
May 17, 3:52 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Benton, Cass, Clarke and 33 more113 min
May 17, 6:44 PM CDTMesoscale DiscussionSPCDubuque61 min
May 17, 8:20 PM CDTMesoscale DiscussionSPCAdams, Appanoose, Clarke, Davis, Decatur, Iowa and 17 more55 min
May 19, 3:03 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Emmet, Lyon and 5 more117 min
May 19, 7:12 PM CDTMesoscale DiscussionSPCAudubon, Calhoun, Carroll, Emmet, Floyd, Franklin and 15 more2 hr
May 20, 11:31 AM CDTMesoscale DiscussionSPCAdair, Benton, Black Hawk, Boone, Buchanan, Cedar and 37 more2 hr
May 20, 4:54 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Boone, Cass and 33 more96 min
May 20, 7:32 PM CDTMesoscale DiscussionSPCCedar, Clinton, Des Moines, Henry, Jefferson, Keokuk and 5 more88 min
May 20, 10:03 PM CDTMesoscale DiscussionSPCFremont, Harrison, Mills, Pottawattamie87 min
May 21, 1:11 AM CDTMesoscale DiscussionSPCAudubon, Boone, Buena Vista, Calhoun, Carroll, Cherokee and 27 more34 min
May 21, 2:22 AM CDTMesoscale DiscussionSPCAllamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 47 more23 min
May 21, 4:34 AM CDTMesoscale DiscussionSPCAllamakee, Black Hawk, Bremer, Buchanan, Buena Vista, Butler and 35 more56 min
May 21, 6:23 AM CDTMesoscale DiscussionSPCAllamakee, Bremer, Butler, Cerro Gordo, Chickasaw, Clay and 20 more67 min
May 21, 9:44 AM CDTMesoscale DiscussionSPCAllamakee, Benton, Black Hawk, Bremer, Buchanan, Buena Vista and 38 more3 hr
May 21, 1:59 PM CDTMesoscale DiscussionSPCBenton, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 9 more2 hr
May 21, 6:33 PM CDTMesoscale DiscussionSPCLyon, Plymouth, Sioux, Woodbury57 min
May 21, 7:37 PM CDTMesoscale DiscussionSPCAudubon, Benton, Black Hawk, Boone, Bremer, Buchanan and 48 more83 min
May 22, 12:25 AM CDTMesoscale DiscussionSPCAudubon, Boone, Buena Vista, Calhoun, Carroll, Cherokee and 14 more2 hr
May 22, 2:41 AM CDTMesoscale DiscussionSPCBenton, Black Hawk, Buchanan, Cedar, Clayton, Clinton and 24 more94 min
May 22, 3:44 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Cass, Dallas and 11 more61 min
May 22, 6:58 AM CDTMesoscale DiscussionSPCAppanoose, Davis, Decatur, Des Moines, Henry, Jefferson and 6 more62 min
May 22, 3:02 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Cass, Clarke and 29 more58 min
May 22, 5:52 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Benton, Black Hawk, Boone and 53 more113 min
May 22, 7:11 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Cass, Clarke, Dallas and 15 more94 min
May 22, 7:23 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Cass, Dallas, Fremont and 9 more67 min
May 22, 8:58 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Benton, Boone and 49 more92 min
May 22, 11:33 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Benton, Cedar, Clarke and 33 more87 min
May 23, 12:24 AM CDTMesoscale DiscussionSPCCedar, Clinton, Des Moines, Dubuque, Jackson, Jones and 3 more66 min
May 23, 2:21 AM CDTMesoscale DiscussionSPCAppanoose, Buchanan, Cedar, Davis, Delaware, Des Moines and 14 more54 min
May 23, 4:30 AM CDTMesoscale DiscussionSPCClinton, Des Moines, Jackson, Lee, Louisa, Muscatine and 1 more60 min
May 23, 12:25 PM CDTMesoscale DiscussionSPCCedar, Clinton, Delaware, Des Moines, Dubuque, Henry and 7 more95 min
May 23, 5:10 PM CDTMesoscale DiscussionSPCClinton, Dubuque, Jackson, Scott95 min
May 24, 9:30 AM CDTMesoscale DiscussionSPCAdams, Cass, Fremont, Mills, Montgomery, Page and 2 more2 hr
May 24, 1:24 PM CDTMesoscale DiscussionSPCBlack Hawk, Bremer, Butler, Calhoun, Cerro Gordo, Chickasaw and 17 more96 min
May 24, 2:08 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 6 more67 min
May 24, 2:39 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Carroll, Cass and 18 more96 min
May 24, 5:26 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Benton, Black Hawk and 61 more94 min
May 24, 7:27 PM CDTMesoscale DiscussionSPCAppanoose, Boone, Butler, Cerro Gordo, Davis, Emmet and 24 more63 min
May 24, 8:15 PM CDTMesoscale DiscussionSPCAppanoose, Davis, Lee, Van Buren, Wayne90 min
May 24, 9:06 PM CDTMesoscale DiscussionSPCAppanoose, Boone, Butler, Cerro Gordo, Davis, Emmet and 26 more54 min
May 27, 11:10 AM CDTMesoscale DiscussionSPCAppanoose, Clarke, Davis, Decatur, Des Moines, Henry and 9 more2 hr
May 28, 7:31 PM CDTMesoscale DiscussionSPCCherokee, Crawford, Harrison, Ida, Lyon, Monona and 6 more89 min
May 28, 9:03 PM CDTMesoscale DiscussionSPCAudubon, Buena Vista, Calhoun, Carroll, Cherokee, Clay and 24 more57 min
May 28, 11:41 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Cherokee, Clay, Dickinson, Emmet and 16 more94 min
May 29, 12:42 PM CDTMesoscale DiscussionSPCAdair, Appanoose, Audubon, Boone, Buena Vista, Calhoun and 45 more93 min
May 29, 5:01 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Cherokee, Clay, Dickinson, Emmet and 13 more119 min
May 29, 8:45 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Carroll, Cass, Crawford and 15 more60 min
May 29, 9:21 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Cherokee, Clay, Dickinson, Emmet and 13 more54 min
May 29, 11:23 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Carroll, Cass, Crawford and 13 more67 min
May 30, 2:38 AM CDTMesoscale DiscussionSPCAppanoose, Clarke, Davis, Decatur, Jasper, Keokuk and 13 more97 min
May 30, 9:40 AM CDTMesoscale DiscussionSPCAppanoose, Davis, Lee, Van Buren3 hr
May 30, 12:13 PM CDTMesoscale DiscussionSPCCedar, Clayton, Clinton, Delaware, Des Moines, Dubuque and 14 more2 hr
May 30, 3:16 PM CDTMesoscale DiscussionSPCClinton, Des Moines, Dubuque, Jackson, Louisa, Muscatine and 1 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 archive20032005

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.