Alert archive / Iowa / Mesoscale Discussions

Mesoscale Discussions in Iowa, 2023

136 mesoscale discussions in 2023. 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 2023. Tap one for its archive.

Mesoscale Discussions
136
Busiest month
July28 mesoscale discussions
Busiest day
March 31, 20239 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 2, 1:28 PM CSTMesoscale DiscussionSPCPlymouth, Woodbury5 hr
Jan 3, 6:09 AM CSTMesoscale DiscussionSPCLyon, Osceola6 hr
Jan 16, 2:19 PM CSTMesoscale DiscussionSPCCedar, Iowa, Johnson, Jones, Muscatine56 min
Jan 18, 12:53 PM CSTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Calhoun, Carroll and 24 more5 hr
Jan 27, 9:51 PM CSTMesoscale DiscussionSPCPlymouth, Sioux6 hr
Feb 9, 2:58 AM CSTMesoscale DiscussionSPCAppanoose, Davis, Decatur, Henry, Iowa, Jefferson and 11 more5 hr
Feb 9, 9:48 AM CSTMesoscale DiscussionSPCCedar, Clinton, Delaware, Dubuque, Henry, Iowa and 8 more4 hr
Feb 14, 1:40 PM CSTMesoscale DiscussionSPCFremont, Page, Taylor2 hr
Feb 16, 2:00 AM CSTMesoscale DiscussionSPCAdair, Adams, Audubon, Cass, Fremont, Guthrie and 9 more6 hr
Feb 16, 8:02 AM CSTMesoscale DiscussionSPCAdair, Adams, Audubon, Benton, Black Hawk, Boone and 40 more6 hr
Feb 22, 8:46 AM CSTMesoscale DiscussionSPCAllamakee, Black Hawk, Bremer, Buchanan, Chickasaw, Clayton and 4 more5 hr
Feb 22, 11:45 PM CSTMesoscale DiscussionSPCDickinson, Lyon, Osceola, Sioux6 hr
Feb 27, 1:43 AM CSTMesoscale DiscussionSPCAppanoose, Davis, Jefferson, Van Buren, Wapello, Wayne62 min
Mar 9, 8:42 AM CSTMesoscale DiscussionSPCAllamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 14 more4 hr
Mar 25, 3:47 AM CDTMesoscale DiscussionSPCClinton, Jackson, Scott4 hr
Mar 31, 8:36 AM CDTMesoscale DiscussionSPCAppanoose, Davis, Decatur, Jefferson, Lee, Lucas and 5 more84 min
Mar 31, 10:37 AM CDTMesoscale DiscussionSPCCedar, Des Moines, Henry, Jefferson, Johnson, Keokuk and 6 more53 min
Mar 31, 11:24 AM CDTMesoscale DiscussionSPCAllamakee, Appanoose, Benton, Black Hawk, Boone, Bremer and 59 more96 min
Mar 31, 12:51 PM CDTMesoscale DiscussionSPCAppanoose, Clarke, Decatur, Jasper, Lucas, Mahaska and 5 more84 min
Mar 31, 3:17 PM CDTMesoscale DiscussionSPCAppanoose, Benton, Black Hawk, Bremer, Buchanan, Butler and 37 more88 min
Mar 31, 3:54 PM CDTMesoscale DiscussionSPCIowa, Johnson, Keokuk, Wapello, Washington36 min
Mar 31, 3:59 PM CDTMesoscale DiscussionSPCIowa, Johnson, Keokuk, Wapello, Washington31 min
Mar 31, 5:18 PM CDTMesoscale DiscussionSPCAllamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 32 more117 min
Mar 31, 5:30 PM CDTMesoscale DiscussionSPCAllamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 32 more2 hr
Apr 4, 8:00 AM CDTMesoscale DiscussionSPCCedar, Clinton, Delaware, Dubuque, Iowa, Jackson and 7 more3 hr
Apr 4, 1:49 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Benton, Black Hawk, Boone and 43 more116 min
Apr 4, 2:54 PM CDTMesoscale DiscussionSPCAllamakee, Bremer, Butler, Cerro Gordo, Chickasaw, Clayton and 10 more3 hr
Apr 4, 5:34 PM CDTMesoscale DiscussionSPCAllamakee, Bremer, Butler, Cerro Gordo, Chickasaw, Clayton and 7 more86 min
Apr 4, 6:18 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Benton, Boone, Calhoun and 44 more87 min
Apr 4, 8:03 PM CDTMesoscale DiscussionSPCAllamakee, Bremer, Chickasaw, Clayton, Fayette, Howard and 1 more87 min
Apr 4, 9:10 PM CDTMesoscale DiscussionSPCAppanoose, Benton, Cedar, Clarke, Davis, Decatur and 21 more65 min
Apr 4, 10:59 PM CDTMesoscale DiscussionSPCAllamakee, Black Hawk, Bremer, Buchanan, Butler, Chickasaw and 8 more91 min
Apr 4, 11:49 PM CDTMesoscale DiscussionSPCAppanoose, Davis, Iowa, Jefferson, Johnson, Keokuk and 3 more86 min
Apr 14, 3:47 PM CDTMesoscale DiscussionSPCFremont, Page58 min
Apr 14, 6:35 PM CDTMesoscale DiscussionSPCFremont, Mills, Pottawattamie85 min
Apr 14, 9:04 PM CDTMesoscale DiscussionSPCCass, Fremont, Mills, Montgomery, Page, Pottawattamie86 min
Apr 18, 9:45 PM CDTMesoscale DiscussionSPCHarrison, Mills, Pottawattamie3 hr
Apr 19, 2:45 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Buena Vista, Calhoun, Carroll and 34 more3 hr
Apr 19, 8:21 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Calhoun, Carroll and 18 more3 hr
Apr 20, 1:28 AM CDTMesoscale DiscussionSPCFremont, Page2 hr
Apr 20, 1:50 PM CDTMesoscale DiscussionSPCCedar, Clinton, Delaware, Des Moines, Dubuque, Jackson and 5 more85 min
Apr 20, 3:41 PM CDTMesoscale DiscussionSPCClinton, Scott94 min
May 6, 1:42 AM CDTMesoscale DiscussionSPCCherokee, Crawford, Harrison, Ida, Monona, Sac and 1 more2 hr
May 6, 3:20 PM CDTMesoscale DiscussionSPCAdams, Appanoose, Clarke, Davis, Decatur, Fremont and 12 more2 hr
May 6, 8:12 PM CDTMesoscale DiscussionSPCDes Moines, Henry, Jefferson, Lee, Louisa, Van Buren and 1 more93 min
May 6, 11:34 PM CDTMesoscale DiscussionSPCDes Moines, Henry, Lee, Louisa, Van Buren, Washington86 min
May 7, 1:37 AM CDTMesoscale DiscussionSPCDes Moines, Henry, Lee, Van Buren113 min
May 7, 4:51 AM CDTMesoscale DiscussionSPCAdair, Audubon, Carroll, Cass, Crawford, Guthrie and 7 more2 hr
May 7, 2:10 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Boone, Carroll and 41 more2 hr
May 7, 5:35 PM CDTMesoscale DiscussionSPCCedar, Clinton, Des Moines, Henry, Iowa, Jackson and 14 more85 min
May 7, 6:02 PM CDTMesoscale DiscussionSPCAdams, Cass, Fremont, Harrison, Mills, Montgomery and 3 more88 min
May 7, 9:00 PM CDTMesoscale DiscussionSPCAdams, Clarke, Decatur, Fremont, Lucas, Madison and 6 more2 hr
May 8, 2:32 PM CDTMesoscale DiscussionSPCBuchanan, Chickasaw, Fayette, Howard, Winneshiek88 min
May 8, 3:51 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Carroll, Cherokee, Clay, Crawford and 21 more2 hr
May 12, 12:17 PM CDTMesoscale DiscussionSPCFremont, Harrison, Mills, Monona, Pottawattamie, Woodbury118 min
May 12, 6:00 PM CDTMesoscale DiscussionSPCFremont, Harrison, Mills, Pottawattamie90 min
May 13, 12:01 PM CDTMesoscale DiscussionSPCAppanoose, Audubon, Benton, Black Hawk, Boone, Buena Vista and 57 more119 min
May 13, 3:31 PM CDTMesoscale DiscussionSPCAppanoose, Boone, Buena Vista, Calhoun, Carroll, Dallas and 18 more119 min
May 13, 6:24 PM CDTMesoscale DiscussionSPCJasper, Lucas, Mahaska, Marion, Monroe, Wapello66 min
May 18, 2:18 PM CDTMesoscale DiscussionSPCAllamakee, Black Hawk, Bremer, Butler, Chickasaw, Clayton and 5 more117 min
May 30, 2:12 PM CDTMesoscale DiscussionSPCAudubon, Carroll, Cass, Crawford, Fremont, Harrison and 5 more2 hr
Jun 17, 2:24 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Buena Vista, Calhoun and 43 more2 hr
Jun 17, 4:48 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Buena Vista, Calhoun, Carroll and 25 more117 min
Jun 24, 2:43 AM CDTMesoscale DiscussionSPCHarrison, Mills, Monona, Plymouth, Pottawattamie, Woodbury2 hr
Jun 24, 4:37 AM CDTMesoscale DiscussionSPCCherokee, Lyon, O'Brien, Osceola, Plymouth, Sioux83 min
Jun 24, 1:27 PM CDTMesoscale DiscussionSPCAdair, Appanoose, Audubon, Benton, Black Hawk, Boone and 45 more2 hr
Jun 24, 3:01 PM CDTMesoscale DiscussionSPCLyon, Sioux119 min
Jun 24, 3:39 PM CDTMesoscale DiscussionSPCBenton, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 19 more2 hr
Jun 24, 5:45 PM CDTMesoscale DiscussionSPCCedar, Clayton, Clinton, Delaware, Des Moines, Dubuque and 12 more90 min
Jun 24, 8:52 PM CDTMesoscale DiscussionSPCCedar, Clinton, Des Moines, Dubuque, Henry, Jackson and 7 more83 min
Jun 24, 9:37 PM CDTMesoscale DiscussionSPCBuena Vista, Butler, Calhoun, Cerro Gordo, Cherokee, Clay and 22 more83 min
Jun 24, 11:56 PM CDTMesoscale DiscussionSPCBlack Hawk, Bremer, Butler, Calhoun, Cerro Gordo, Chickasaw and 16 more94 min
Jun 29, 5:18 AM CDTMesoscale DiscussionSPCRinggold, Taylor117 min
Jun 29, 10:06 AM CDTMesoscale DiscussionSPCDes Moines, Lee114 min
Jun 30, 7:24 AM CDTMesoscale DiscussionSPCAppanoose, Clarke, Davis, Decatur, Des Moines, Henry and 8 more96 min
Jul 3, 3:48 PM CDTMesoscale DiscussionSPCClay, Dickinson, Emmet, Lyon, O'Brien, Osceola and 2 more117 min
Jul 4, 6:07 PM CDTMesoscale DiscussionSPCMonona, Woodbury83 min
Jul 4, 8:58 PM CDTMesoscale DiscussionSPCFremont92 min
Jul 10, 2:09 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Crawford, Harrison, Ida and 8 more2 hr
Jul 10, 5:59 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Ida, Monona and 5 more61 min
Jul 10, 6:18 PM CDTMesoscale DiscussionSPCAllamakee, Cerro Gordo, Chickasaw, Emmet, Floyd, Hancock and 6 more57 min
Jul 10, 9:35 PM CDTMesoscale DiscussionSPCAllamakee, Cerro Gordo, Chickasaw, Floyd, Hancock, Howard and 5 more55 min
Jul 11, 2:41 PM CDTMesoscale DiscussionSPCClinton, Scott94 min
Jul 12, 4:41 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Boone, Buena Vista and 39 more94 min
Jul 12, 7:25 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Boone, Calhoun, Cass and 29 more95 min
Jul 12, 8:44 AM CDTMesoscale DiscussionSPCCedar, Clinton, Jackson, Johnson, Jones, Linn and 3 more91 min
Jul 13, 1:28 PM CDTMesoscale DiscussionSPCBremer, Butler, Cerro Gordo, Chickasaw, Clay, Dickinson and 14 more2 hr
Jul 13, 7:17 PM CDTMesoscale DiscussionSPCCherokee, Clay, Dickinson, Emmet, Kossuth, Lyon and 6 more88 min
Jul 14, 2:38 PM CDTMesoscale DiscussionSPCCedar, Clayton, Clinton, Davis, Delaware, Des Moines and 15 more2 hr
Jul 14, 6:11 PM CDTMesoscale DiscussionSPCClinton, Des Moines, Jackson, Lee, Scott94 min
Jul 17, 8:40 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Cass, Clarke, Davis and 14 more2 hr
Jul 24, 1:28 AM CDTMesoscale DiscussionSPCHarrison, Monona, Plymouth, Woodbury3 hr
Jul 24, 4:14 AM CDTMesoscale DiscussionSPCFremont, Harrison, Mills, Monona, Pottawattamie91 min
Jul 24, 5:07 AM CDTMesoscale DiscussionSPCAdair, Adams, Cass, Clarke, Decatur, Madison and 5 more83 min
Jul 26, 12:50 AM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more85 min
Jul 26, 4:03 AM CDTMesoscale DiscussionSPCAllamakee, Winneshiek87 min
Jul 26, 4:26 AM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Clay, Humboldt, Palo Alto, Pocahontas and 2 more2 hr
Jul 28, 3:55 PM CDTMesoscale DiscussionSPCAudubon, Black Hawk, Boone, Bremer, Buena Vista, Butler and 36 more95 min
Jul 28, 7:21 PM CDTMesoscale DiscussionSPCCedar, Clinton, Des Moines, Dubuque, Henry, Jackson and 9 more2 hr
Jul 28, 8:09 PM CDTMesoscale DiscussionSPCBenton, Cedar, Clinton, Johnson, Jones, Linn and 2 more66 min
Jul 29, 6:09 AM CDTMesoscale DiscussionSPCAdair, Adams, Cass, Clarke, Decatur, Fremont and 9 more2 hr
Jul 29, 9:50 AM CDTMesoscale DiscussionSPCFremont, Page115 min
Jul 30, 3:26 PM CDTMesoscale DiscussionSPCFremont, Harrison, Mills, Montgomery, Page, Pottawattamie2 hr
Aug 2, 2:38 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Cass, Clarke, Decatur and 11 more3 hr
Aug 5, 2:10 PM CDTMesoscale DiscussionSPCCherokee, Harrison, Lyon, Monona, O'Brien, Plymouth and 2 more95 min
Aug 5, 5:02 PM CDTMesoscale DiscussionSPCAdair, Audubon, Buena Vista, Calhoun, Carroll, Cass and 11 more118 min
Aug 5, 7:53 PM CDTMesoscale DiscussionSPCBuena Vista, Carroll, Cherokee, Crawford, Harrison, Ida and 7 more2 hr
Aug 5, 10:17 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Calhoun, Carroll and 14 more58 min
Aug 6, 1:26 PM CDTMesoscale DiscussionSPCDavis, Jefferson, Lee, Van Buren, Wapello3 hr
Aug 6, 6:01 PM CDTMesoscale DiscussionSPCDes Moines, Henry, Lee119 min
Aug 11, 3:31 PM CDTMesoscale DiscussionSPCDecatur, Fremont, Page, Ringgold, Taylor89 min
Aug 11, 4:00 PM CDTMesoscale DiscussionSPCAllamakee, Howard, Mitchell, Winneshiek2 hr
Aug 11, 5:53 PM CDTMesoscale DiscussionSPCFremont, Page, Ringgold, Taylor2 hr
Aug 11, 6:42 PM CDTMesoscale DiscussionSPCAllamakee, Bremer, Cerro Gordo, Chickasaw, Clayton, Emmet and 10 more63 min
Aug 11, 9:08 PM CDTMesoscale DiscussionSPCAllamakee, Black Hawk, Bremer, Buchanan, Buena Vista, Butler and 23 more97 min
Aug 14, 2:01 PM CDTMesoscale DiscussionSPCChickasaw, Clayton, Clinton, Delaware, Dubuque, Fayette and 2 more119 min
Aug 16, 8:23 PM CDTMesoscale DiscussionSPCEmmet, Winnebago97 min
Sep 5, 8:09 PM CDTMesoscale DiscussionSPCHoward96 min
Sep 22, 3:56 PM CDTMesoscale DiscussionSPCBenton, Black Hawk, Buchanan, Cedar, Clayton, Delaware and 11 more2 hr
Sep 23, 9:37 AM CDTMesoscale DiscussionSPCCherokee, Crawford, Harrison, Ida, Monona, Plymouth and 4 more113 min
Sep 23, 1:09 PM CDTMesoscale DiscussionSPCAdair, Audubon, Boone, Buena Vista, Butler, Calhoun and 28 more96 min
Sep 23, 2:10 PM CDTMesoscale DiscussionSPCLyon, Osceola, Sioux3 hr
Sep 23, 3:39 PM CDTMesoscale DiscussionSPCBlack Hawk, Boone, Bremer, Butler, Cerro Gordo, Chickasaw and 20 more96 min
Sep 23, 4:58 PM CDTMesoscale DiscussionSPCAdams, Audubon, Cass, Fremont, Harrison, Mills and 5 more2 hr
Sep 23, 6:23 PM CDTMesoscale DiscussionSPCAudubon, Boone, Buena Vista, Butler, Calhoun, Carroll and 30 more2 hr
Sep 26, 1:20 PM CDTMesoscale DiscussionSPCCedar, Clinton, Jackson, Jones, Muscatine, Scott85 min
Sep 29, 5:14 PM CDTMesoscale DiscussionSPCLyon, Osceola, Sioux2 hr
Oct 3, 6:56 PM CDTMesoscale DiscussionSPCHarrison, Lyon, Monona, Plymouth, Sioux, Woodbury94 min
Oct 11, 8:50 PM CDTMesoscale DiscussionSPCAudubon, Boone, Buena Vista, Calhoun, Carroll, Cherokee and 17 more2 hr
Oct 13, 12:12 PM CDTMesoscale DiscussionSPCBoone, Hamilton, Hardin, Humboldt, Jasper, Mahaska and 11 more93 min
Oct 13, 3:26 PM CDTMesoscale DiscussionSPCBenton, Boone, Calhoun, Davis, Franklin, Greene and 23 more94 min
Oct 13, 5:19 PM CDTMesoscale DiscussionSPCDes Moines, Henry, Iowa, Johnson, Keokuk, Lee and 4 more86 min
Oct 23, 9:27 PM CDTMesoscale DiscussionSPCBremer, Buena Vista, Butler, Calhoun, Cerro Gordo, Cherokee and 28 more3 hr
Oct 24, 10:06 AM CDTMesoscale DiscussionSPCDickinson, Emmet, Howard, Mitchell, Osceola, Winnebago and 1 more2 hr
Oct 24, 5:07 PM CDTMesoscale DiscussionSPCHoward113 min
Dec 25, 7:00 AM CSTMesoscale DiscussionSPCCherokee, Crawford, Harrison, Ida, Lyon, Monona and 6 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. March 31, 20239mesoscale discussions
  2. May 7, 20237mesoscale discussions
  3. June 24, 20236mesoscale discussions
  4. September 23, 20236mesoscale discussions
  5. April 4, 20235mesoscale discussions
  6. April 5, 20234mesoscale discussions
  7. April 20, 20234mesoscale discussions
  8. July 29, 20234mesoscale discussions
  9. August 6, 20234mesoscale discussions
  10. August 11, 20234mesoscale discussions
  11. May 8, 20233mesoscale discussions
  12. May 13, 20233mesoscale discussions

Nearby

Alerts in force nowTornadoes on recordThe radar archive20222024

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.