Alert archive / Iowa / Mesoscale Discussions

Mesoscale Discussions in Iowa, 2004

244 mesoscale discussions in 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 2004. Tap one for its archive.

Mesoscale Discussions
244
Busiest month
May84 mesoscale discussions
Busiest day
August 3, 200411 mesoscale discussions

Over time

By month

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
Jan 16, 1:38 PM CSTMesoscale DiscussionSPCBlack Hawk, Bremer, Buchanan, Butler, Chickasaw, Clayton and 11 more6 hr
Jan 16, 9:00 PM CSTMesoscale DiscussionSPCAllamakee, Black Hawk, Bremer, Buchanan, Butler, Chickasaw and 12 more6 hr
Feb 1, 7:49 PM CSTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Calhoun, Carroll and 18 more5 hr
Feb 2, 1:08 AM CSTMesoscale DiscussionSPCDes Moines, Lee, Scott4 hr
Feb 5, 12:52 PM CSTMesoscale DiscussionSPCAppanoose, Benton, Cedar, Clarke, Clinton, Davis and 33 more6 hr
Mar 1, 10:06 AM CSTMesoscale DiscussionSPCAllamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 44 more84 min
Mar 15, 3:00 AM CSTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Calhoun, Carroll and 20 more6 hr
Mar 15, 12:56 PM CSTMesoscale DiscussionSPCAppanoose, Benton, Boone, Cedar, Clarke, Clinton and 33 more4 hr
Mar 24, 9:34 AM CSTMesoscale DiscussionSPCScott56 min
Mar 25, 10:51 AM CSTMesoscale DiscussionSPCBremer, Buena Vista, Butler, Cerro Gordo, Cherokee, Chickasaw and 18 more114 min
Apr 16, 2:51 PM CDTMesoscale DiscussionSPCAllamakee, Bremer, Buena Vista, Butler, Calhoun, Carroll and 33 more114 min
Apr 16, 7:17 PM CDTMesoscale DiscussionSPCAudubon, Black Hawk, Boone, Bremer, Buena Vista, Butler and 29 more88 min
Apr 17, 5:03 PM CDTMesoscale DiscussionSPCBoone, Buena Vista, Butler, Calhoun, Carroll, Cerro Gordo and 30 more2 hr
Apr 17, 9:31 PM CDTMesoscale DiscussionSPCAllamakee, Cerro Gordo, Chickasaw, Emmet, Fayette, Floyd and 8 more119 min
Apr 17, 11:10 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Lyon, O'Brien and 3 more95 min
Apr 17, 11:50 PM CDTMesoscale DiscussionSPCCerro Gordo, Emmet, Hancock, Howard, Humboldt, Kossuth and 5 more85 min
Apr 18, 4:15 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Cerro Gordo, Cherokee, Clay, Dickinson and 20 more60 min
Apr 18, 7:05 PM CDTMesoscale DiscussionSPCAudubon, Buena Vista, Calhoun, Carroll, Cass, Cherokee and 29 more115 min
Apr 18, 11:12 PM CDTMesoscale DiscussionSPCAdair, Adams, Allamakee, Audubon, Benton, Black Hawk and 48 more93 min
Apr 20, 6:00 PM CDTMesoscale DiscussionSPCScott2 hr
Apr 20, 7:20 PM CDTMesoscale DiscussionSPCAppanoose, Clarke, Dallas, Davis, Decatur, Henry and 19 more115 min
Apr 20, 8:06 PM CDTMesoscale DiscussionSPCFremont, Harrison, Mills, Monona, Montgomery, Page and 2 more84 min
Apr 21, 3:04 PM CDTMesoscale DiscussionSPCHarrison, Lyon, Monona, Plymouth, Sioux, Woodbury2 hr
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
Jun 5, 4:50 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Crawford, Dickinson, Ida and 8 more115 min
Jun 6, 2:31 PM CDTMesoscale DiscussionSPCAllamakee, Dickinson, Emmet, Howard, Mitchell, Winnebago and 2 more119 min
Jun 8, 3:29 PM CDTMesoscale DiscussionSPCAllamakee, Audubon, Black Hawk, Boone, Bremer, Buchanan and 46 more2 hr
Jun 8, 6:44 PM CDTMesoscale DiscussionSPCBoone, Buena Vista, Butler, Calhoun, Carroll, Cerro Gordo and 16 more2 hr
Jun 8, 7:54 PM CDTMesoscale DiscussionSPCAllamakee, Chickasaw, Fayette, Floyd, Howard, Winneshiek2 hr
Jun 10, 7:58 PM CDTMesoscale DiscussionSPCClinton, Dubuque, Jackson, Scott92 min
Jun 11, 1:28 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Buena Vista, Calhoun and 20 more62 min
Jun 11, 10:10 AM CDTMesoscale DiscussionSPCAllamakee, Bremer, Butler, Cerro Gordo, Chickasaw, Clayton and 14 more95 min
Jun 11, 12:55 PM CDTMesoscale DiscussionSPCBremer, Buena Vista, Butler, Calhoun, Cerro Gordo, Cherokee and 23 more3 hr
Jun 11, 3:03 PM CDTMesoscale DiscussionSPCBlack Hawk, Bremer, Butler, Calhoun, Cerro Gordo, Chickasaw and 19 more87 min
Jun 11, 4:55 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Carroll, Cass and 20 more95 min
Jun 11, 5:56 PM CDTMesoscale DiscussionSPCJackson94 min
Jun 11, 7:57 PM CDTMesoscale DiscussionSPCAllamakee, Black Hawk, Bremer, Buchanan, Butler, Calhoun and 26 more93 min
Jun 12, 12:43 PM CDTMesoscale DiscussionSPCAudubon, Cass, Crawford, Fremont, Harrison, Mills and 4 more92 min
Jun 12, 5:00 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Buena Vista, Calhoun and 29 more90 min
Jun 12, 7:00 PM CDTMesoscale DiscussionSPCAllamakee, Chickasaw, Clayton, Fayette, Howard, Winneshiek2 hr
Jun 12, 7:09 PM CDTMesoscale DiscussionSPCAppanoose, Benton, Boone, Cedar, Clarke, Clinton and 32 more96 min
Jun 13, 6:54 PM CDTMesoscale DiscussionSPCAdams, Fremont, Mills, Montgomery, Page, Pottawattamie and 1 more66 min
Jun 13, 11:18 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Cherokee, Clay, Dickinson, Emmet and 12 more2 hr
Jun 13, 11:56 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Cass, Clarke and 22 more3 hr
Jun 14, 5:25 AM CDTMesoscale DiscussionSPCBenton, Boone, Cedar, Clarke, Clinton, Dallas and 29 more3 hr
Jun 14, 7:42 AM CDTMesoscale DiscussionSPCAppanoose, Cedar, Clinton, Davis, Des Moines, Henry and 13 more2 hr
Jun 15, 7:07 PM CDTMesoscale DiscussionSPCCherokee, Clay, Dickinson, Lyon, O'Brien, Osceola and 3 more53 min
Jun 15, 9:15 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 6 more60 min
Jun 16, 2:18 AM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Crawford, Dickinson, Fremont and 13 more57 min
Jun 16, 11:10 AM CDTMesoscale DiscussionSPCAdair, Adams, Allamakee, Audubon, Benton, Black Hawk and 63 more2 hr
Jun 16, 5:01 PM CDTMesoscale DiscussionSPCAllamakee, Appanoose, Benton, Black Hawk, Bremer, Buchanan and 42 more89 min
Jun 23, 11:23 AM CDTMesoscale DiscussionSPCCedar, Clinton, Des Moines, Henry, Jackson, Louisa and 2 more2 hr
Jun 23, 3:45 PM CDTMesoscale DiscussionSPCAllamakee, Bremer, Cerro Gordo, Chickasaw, Clayton, Dubuque and 7 more90 min
Jul 5, 1:16 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Buena Vista, Calhoun and 25 more89 min
Jul 5, 4:45 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Boone, Buena Vista and 30 more2 hr
Jul 5, 3:00 PM CDTMesoscale DiscussionSPCAppanoose, Clarke, Dallas, Davis, Decatur, Des Moines and 22 more60 min
Jul 5, 6:30 PM CDTMesoscale DiscussionSPCBenton, Black Hawk, Bremer, Buchanan, Butler, Cedar and 40 more60 min
Jul 5, 9:29 PM CDTMesoscale DiscussionSPCAllamakee, Buchanan, Cedar, Chickasaw, Clayton, Clinton and 12 more61 min
Jul 9, 4:26 PM CDTMesoscale DiscussionSPCDes Moines, Lee, Louisa, Muscatine94 min
Jul 10, 5:05 PM CDTMesoscale DiscussionSPCAdams, Fremont, Mills, Montgomery, Page, Taylor85 min
Jul 11, 10:14 AM CDTMesoscale DiscussionSPCCedar, Clinton, Des Moines, Henry, Jackson, Jefferson and 8 more91 min
Jul 11, 10:33 AM CDTMesoscale DiscussionSPCAdams, Audubon, Cass, Fremont, Harrison, Mills and 6 more117 min
Jul 11, 2:04 PM CDTMesoscale DiscussionSPCAdams, Audubon, Cass, Fremont, Harrison, Mills and 6 more116 min
Jul 12, 9:19 PM CDTMesoscale DiscussionSPCClay, Dickinson, Emmet, Hancock, Kossuth, Lyon and 5 more116 min
Jul 12, 11:19 PM CDTMesoscale DiscussionSPCAdair, Adams, Cass, Decatur, Fremont, Mills and 6 more116 min
Jul 12, 11:52 PM CDTMesoscale DiscussionSPCCherokee, Dickinson, Lyon, O'Brien, Osceola, Plymouth and 1 more53 min
Jul 13, 4:21 AM CDTMesoscale DiscussionSPCAllamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 22 more54 min
Jul 13, 10:32 AM CDTMesoscale DiscussionSPCCedar, Clinton, Delaware, Dubuque, Jackson, Johnson and 4 more118 min
Jul 13, 1:39 PM CDTMesoscale DiscussionSPCCedar, Clinton, Delaware, Dubuque, Jackson, Jones and 3 more66 min
Jul 15, 9:32 AM CDTMesoscale DiscussionSPCPlymouth118 min
Jul 15, 11:34 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Cass, Decatur, Fremont and 10 more86 min
Jul 16, 10:51 AM CDTMesoscale DiscussionSPCCedar, Clayton, Clinton, Delaware, Dubuque, Jackson and 3 more2 hr
Jul 16, 2:45 PM CDTMesoscale DiscussionSPCBenton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more90 min
Jul 19, 12:26 PM CDTMesoscale DiscussionSPCAllamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 36 more3 hr
Jul 19, 3:26 PM CDTMesoscale DiscussionSPCAllamakee, Benton, Black Hawk, Bremer, Buchanan, Cedar and 22 more2 hr
Jul 20, 2:16 PM CDTMesoscale DiscussionSPCLyon, Monona, Plymouth, Sioux, Woodbury119 min
Jul 20, 5:35 PM CDTMesoscale DiscussionSPCClinton, Dubuque, Jackson, Jones, Scott55 min
Jul 20, 6:08 PM CDTMesoscale DiscussionSPCClinton, Dubuque, Jackson, Jones, Scott2 hr
Jul 20, 11:08 PM CDTMesoscale DiscussionSPCHoward, Mitchell, Winnebago, Worth97 min
Jul 21, 9:03 AM CDTMesoscale DiscussionSPCBenton, Cedar, Clinton, Des Moines, Henry, Iowa and 17 more117 min
Jul 21, 1:01 PM CDTMesoscale DiscussionSPCAppanoose, Benton, Cedar, Clinton, Davis, Des Moines and 22 more89 min
Jul 21, 3:43 PM CDTMesoscale DiscussionSPCCherokee, Clay, Dickinson, Lyon, O'Brien, Osceola and 2 more92 min
Jul 21, 6:02 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Crawford, Dickinson, Emmet and 9 more118 min
Jul 31, 12:10 PM CDTMesoscale DiscussionSPCDickinson, Emmet, Osceola3 hr
Jul 31, 4:43 PM CDTMesoscale DiscussionSPCCherokee, Monona, O'Brien, Plymouth, Sioux, Woodbury62 min
Jul 31, 8:19 PM CDTMesoscale DiscussionSPCDickinson, Emmet, Lyon, Osceola, Winnebago56 min
Jul 31, 11:41 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Cerro Gordo, Cherokee, Chickasaw, Clay and 19 more64 min
Aug 1, 1:59 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Carroll, Cass and 24 more91 min
Aug 1, 5:56 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Boone, Bremer and 59 more94 min
Aug 1, 12:11 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Carroll, Cherokee, Crawford, Greene and 3 more64 min
Aug 1, 1:48 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Carroll, Cherokee, Clay, Crawford and 17 more117 min
Aug 1, 2:17 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Cass, Clarke, Dallas and 15 more58 min
Aug 2, 3:02 AM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Ida, Lyon, O'Brien, Osceola and 4 more58 min
Aug 2, 4:56 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Benton, Black Hawk and 50 more94 min
Aug 3, 2:02 AM CDTMesoscale DiscussionSPCBenton, Black Hawk, Boone, Buena Vista, Butler, Calhoun and 30 more118 min
Aug 3, 7:21 AM CDTMesoscale DiscussionSPCLyon54 min
Aug 3, 10:48 AM CDTMesoscale DiscussionSPCAllamakee, Black Hawk, Bremer, Buchanan, Buena Vista, Butler and 32 more87 min
Aug 3, 1:16 PM CDTMesoscale DiscussionSPCBenton, Black Hawk, Boone, Bremer, Buchanan, Buena Vista and 46 more89 min
Aug 3, 3:00 PM CDTMesoscale DiscussionSPCAdair, Audubon, Carroll, Cass, Crawford, Greene and 8 more2 hr
Aug 3, 3:55 PM CDTMesoscale DiscussionSPCAdair, Appanoose, Benton, Black Hawk, Boone, Buchanan and 43 more95 min
Aug 3, 4:52 PM CDTMesoscale DiscussionSPCAdams, Audubon, Cass, Fremont, Harrison, Mills and 5 more53 min
Aug 3, 5:07 PM CDTMesoscale DiscussionSPCAllamakee, Clayton, Fayette, Winneshiek53 min
Aug 3, 5:39 PM CDTMesoscale DiscussionSPCAppanoose, Benton, Black Hawk, Buchanan, Cedar, Clarke and 32 more66 min
Aug 3, 6:34 PM CDTMesoscale DiscussionSPCAppanoose, Benton, Black Hawk, Buchanan, Cedar, Clinton and 28 more86 min
Aug 3, 6:45 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Cass, Fremont, Guthrie and 9 more90 min
Aug 3, 8:19 PM CDTMesoscale DiscussionSPCAppanoose, Benton, Boone, Cedar, Clarke, Clinton and 33 more56 min
Aug 3, 9:16 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Cass, Fremont, Guthrie and 9 more59 min
Aug 3, 11:34 PM CDTMesoscale DiscussionSPCAppanoose, Davis, Lee86 min
Aug 4, 1:42 AM CDTMesoscale DiscussionSPCAdams, Appanoose, Clarke, Davis, Decatur, Des Moines and 17 more2 hr
Aug 8, 12:17 PM CDTMesoscale DiscussionSPCCerro Gordo, Clay, Dickinson, Emmet, Floyd, Franklin and 10 more58 min
Aug 8, 1:05 PM CDTMesoscale DiscussionSPCFremont, Harrison, Mills, Montgomery, Page, Pottawattamie55 min
Aug 15, 5:01 PM CDTMesoscale DiscussionSPCDickinson, Lyon, O'Brien, Osceola, Plymouth, Sioux119 min
Aug 15, 7:14 PM CDTMesoscale DiscussionSPCDickinson, Lyon, Osceola, Sioux2 hr
Aug 16, 4:03 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Crawford, Dickinson, Harrison and 9 more57 min
Aug 16, 6:49 PM CDTMesoscale DiscussionSPCBoone, Buena Vista, Butler, Calhoun, Carroll, Dallas and 19 more116 min
Aug 16, 8:54 PM CDTMesoscale DiscussionSPCAudubon, Boone, Calhoun, Carroll, Crawford, Dallas and 30 more2 hr
Aug 17, 12:57 PM CDTMesoscale DiscussionSPCClinton, Davis, Des Moines, Henry, Lee, Louisa and 3 more63 min
Aug 17, 3:59 PM CDTMesoscale DiscussionSPCDes Moines, Henry, Lee, Van Buren61 min
Aug 18, 12:27 PM CDTMesoscale DiscussionSPCAllamakee, Howard, Winneshiek63 min
Aug 18, 3:46 PM CDTMesoscale DiscussionSPCAllamakee, Bremer, Butler, Chickasaw, Clayton, Fayette and 3 more59 min
Aug 18, 4:17 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Cass, Clarke, Dallas and 31 more118 min
Aug 18, 5:17 PM CDTMesoscale DiscussionSPCLee88 min
Aug 18, 5:52 PM CDTMesoscale DiscussionSPCClayton, Fayette113 min
Aug 18, 7:26 PM CDTMesoscale DiscussionSPCAppanoose, Davis, Des Moines, Henry, Jefferson, Lee and 2 more2 hr
Aug 22, 5:02 PM CDTMesoscale DiscussionSPCCherokee, Plymouth, Woodbury118 min
Aug 23, 2:58 PM CDTMesoscale DiscussionSPCAudubon, Black Hawk, Boone, Bremer, Buena Vista, Butler and 47 more2 hr
Aug 23, 5:30 PM CDTMesoscale DiscussionSPCAllamakee, Chickasaw, Dickinson, Emmet, Floyd, Howard and 7 more2 hr
Aug 24, 3:02 AM CDTMesoscale DiscussionSPCAdair, Adams, Cass, Clarke, Decatur, Fremont and 10 more118 min
Aug 25, 9:24 AM CDTMesoscale DiscussionSPCAppanoose, Davis, Des Moines, Henry, Jefferson, Lee and 2 more2 hr
Aug 25, 1:22 PM CDTMesoscale DiscussionSPCClinton, Jackson, Scott113 min
Aug 25, 1:31 PM CDTMesoscale DiscussionSPCLyon, O'Brien, Osceola, Sioux119 min
Aug 25, 9:57 PM CDTMesoscale DiscussionSPCAppanoose, Davis, Des Moines, Henry, Jefferson, Lee and 2 more93 min
Aug 26, 2:29 PM CDTMesoscale DiscussionSPCAllamakee, Audubon, Black Hawk, Boone, Bremer, Buchanan and 39 more2 hr
Aug 26, 7:45 PM CDTMesoscale DiscussionSPCAdair, Adams, Allamakee, Audubon, Benton, Black Hawk and 56 more90 min
Aug 26, 9:13 PM CDTMesoscale DiscussionSPCAllamakee, Appanoose, Benton, Black Hawk, Bremer, Buchanan and 39 more62 min
Aug 27, 1:49 AM CDTMesoscale DiscussionSPCAppanoose, Davis, Des Moines, Henry, Lee, Louisa and 1 more56 min
Aug 27, 4:10 PM CDTMesoscale DiscussionSPCAppanoose, Cedar, Clarke, Clinton, Davis, Decatur and 21 more2 hr
Aug 27, 8:31 PM CDTMesoscale DiscussionSPCAppanoose59 min
Sep 1, 3:20 PM CDTMesoscale DiscussionSPCBenton, Black Hawk, Boone, Buchanan, Butler, Cedar and 28 more115 min
Sep 5, 2:34 PM CDTMesoscale DiscussionSPCAudubon, Boone, Buena Vista, Butler, Calhoun, Carroll and 26 more56 min
Sep 5, 5:39 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Boone, Buena Vista and 55 more96 min
Sep 5, 8:03 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Boone, Buena Vista and 40 more57 min
Sep 13, 3:21 PM CDTMesoscale DiscussionSPCLyon, O'Brien, Osceola, Plymouth, Sioux84 min
Sep 13, 8:59 PM CDTMesoscale DiscussionSPCLyon, O'Brien, Osceola, Plymouth, Sioux61 min
Sep 14, 1:47 PM CDTMesoscale DiscussionSPCAdair, Audubon, Boone, Calhoun, Carroll, Cass and 23 more88 min
Sep 14, 5:14 PM CDTMesoscale DiscussionSPCAdair, Audubon, Boone, Buena Vista, Calhoun, Carroll and 32 more2 hr
Sep 14, 7:17 PM CDTMesoscale DiscussionSPCAdair, Audubon, Boone, Buena Vista, Calhoun, Carroll and 32 more118 min
Sep 14, 8:16 PM CDTMesoscale DiscussionSPCAllamakee, Chickasaw, Howard, Mitchell, Winneshiek3 hr
Sep 15, 4:00 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Benton, Black Hawk and 37 more3 hr
Sep 17, 7:39 PM CDTMesoscale DiscussionSPCFremont, Mills, Montgomery, Page, Ringgold, Taylor2 hr
Sep 18, 1:18 AM CDTMesoscale DiscussionSPCClarke, Decatur, Lucas, Ringgold, Taylor, Union and 1 more117 min
Oct 22, 10:29 AM CDTMesoscale DiscussionSPCCrawford, Fremont, Harrison, Mills, Monona, Pottawattamie and 1 more2 hr
Oct 22, 12:11 PM CDTMesoscale DiscussionSPCAllamakee, Appanoose, Benton, Black Hawk, Bremer, Buchanan and 42 more2 hr
Oct 22, 4:26 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 6 more3 hr
Oct 22, 7:44 PM CDTMesoscale DiscussionSPCCherokee, Ida, Lyon, Monona, O'Brien, Osceola and 3 more61 min
Oct 29, 2:12 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Buena Vista, Butler and 46 more3 hr
Oct 29, 5:24 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Boone, Bremer, Butler and 33 more96 min
Oct 29, 5:46 PM CDTMesoscale DiscussionSPCAllamakee, Benton, Buchanan, Cedar, Clayton, Clinton and 18 more89 min
Oct 29, 8:05 PM CDTMesoscale DiscussionSPCAppanoose, Black Hawk, Bremer, Chickasaw, Howard, Lucas and 6 more55 min
Oct 29, 9:02 PM CDTMesoscale DiscussionSPCAllamakee, Benton, Buchanan, Cedar, Clayton, Clinton and 17 more88 min
Nov 28, 5:28 PM CSTMesoscale DiscussionSPCAdair, Adams, Appanoose, Cass, Clarke, Davis and 12 more6 hr

By county

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

59 more counties

The busiest days

Days with the most alerts issued, by UTC date.

  1. August 3, 200411mesoscale discussions
  2. May 21, 20049mesoscale discussions
  3. May 23, 20049mesoscale discussions
  4. May 8, 20048mesoscale discussions
  5. May 22, 20047mesoscale discussions
  6. May 30, 20047mesoscale discussions
  7. June 11, 20047mesoscale discussions
  8. August 1, 20047mesoscale discussions
  9. May 17, 20046mesoscale discussions
  10. July 13, 20046mesoscale discussions
  11. May 7, 20045mesoscale discussions
  12. May 9, 20045mesoscale discussions

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.