Alert archive / Iowa / Mesoscale Discussions / 2018

Mesoscale Discussions in Iowa, May 2018

27 mesoscale discussions in May 2018. 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 2018. Tap one for its archive.

Mesoscale Discussions
27
Busiest day
May 2, 20185 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, 10:24 AM CDTMesoscale DiscussionSPCAppanoose, Clarke, Decatur, Jasper, Lucas, Madison and 10 more3 hr
May 1, 3:16 PM CDTMesoscale DiscussionSPCAudubon, Black Hawk, Boone, Bremer, Buena Vista, Butler and 24 more89 min
May 1, 5:00 PM CDTMesoscale DiscussionSPCCass, Fremont, Mills, Montgomery, Page, Pottawattamie2 hr
May 1, 7:24 PM CDTMesoscale DiscussionSPCAdams, Cass, Fremont, Harrison, Mills, Montgomery and 4 more2 hr
May 1, 7:55 PM CDTMesoscale DiscussionSPCAdair, Allamakee, Audubon, Benton, Black Hawk, Boone and 48 more95 min
May 1, 9:38 PM CDTMesoscale DiscussionSPCAdair, Audubon, Benton, Black Hawk, Boone, Bremer and 29 more67 min
May 2, 1:33 PM CDTMesoscale DiscussionSPCCedar, Clinton, Des Moines, Henry, Jackson, Jefferson and 9 more117 min
May 2, 5:08 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Clarke, Davis, Decatur and 15 more97 min
May 2, 7:21 PM CDTMesoscale DiscussionSPCCedar, Clinton, Des Moines, Henry, Iowa, Jackson and 10 more84 min
May 2, 8:00 PM CDTMesoscale DiscussionSPCAdams, Appanoose, Clarke, Davis, Decatur, Lucas and 11 more90 min
May 2, 10:01 PM CDTMesoscale DiscussionSPCDes Moines, Henry, Jefferson, Lee, Louisa, Muscatine and 3 more89 min
May 3, 2:36 PM CDTMesoscale DiscussionSPCAdams, Clarke, Decatur, Fremont, Montgomery, Page and 3 more114 min
May 3, 5:58 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Cass, Clarke, Dallas and 16 more92 min
May 3, 7:43 PM CDTMesoscale DiscussionSPCAppanoose, Clarke, Davis, Decatur, Jasper, Lucas and 12 more62 min
May 8, 3:56 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Carroll, Cherokee, Crawford, Ida and 4 more2 hr
May 12, 1:04 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Benton, Boone, Carroll and 32 more116 min
May 14, 2:40 AM CDTMesoscale DiscussionSPCDubuque, Jackson2 hr
May 24, 2:36 PM CDTMesoscale DiscussionSPCLyon2 hr
May 25, 12:59 PM CDTMesoscale DiscussionSPCAllamakee, Bremer, Chickasaw, Clayton, Delaware, Fayette and 3 more2 hr
May 25, 5:20 PM CDTMesoscale DiscussionSPCAllamakee, Bremer, Buena Vista, Butler, Cerro Gordo, Chickasaw and 22 more115 min
May 25, 6:29 PM CDTMesoscale DiscussionSPCAllamakee, Bremer, Buena Vista, Butler, Cerro Gordo, Chickasaw and 22 more2 hr
May 27, 3:47 PM CDTMesoscale DiscussionSPCCedar, Des Moines, Henry, Lee, Louisa, Muscatine and 1 more118 min
May 28, 2:31 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Boone, Carroll and 26 more2 hr
May 29, 1:22 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Carroll, Cherokee, Clay, Crawford and 10 more83 min
May 29, 2:01 PM CDTMesoscale DiscussionSPCFremont, Mills, Montgomery, Page89 min
May 29, 3:54 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Buena Vista, Butler and 47 more96 min
May 29, 5:04 PM CDTMesoscale DiscussionSPCAdams, Fremont, Mills, Montgomery, Page, Taylor116 min

By county

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

58 more counties

Nearby

Alerts in force nowTornadoes on recordThe radar archive20172019

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.