Alert archive / Iowa / Mesoscale Discussions in 2014

Mesoscale Discussion 586

May 12, 20148 counties in Illinois; 29 counties in Iowa; 12 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at May 12, 2014, 3:21 PM CDT for 8 counties in Illinois; 29 counties in Iowa; 12 counties in Missouri. It was in force for 54 min.

The area

The outline as issued.

The facts

Issued
May 12, 2014, 3:21 PM CDT (20:21 UTC)
Expired
May 12, 2014, 4:15 PM CDT
In force
54 min
Issued by
the Storm Prediction Center
Concerning
Severe thunderstorm watch 150
All 49 counties

Appanoose County, IA, Benton County, IA, Black Hawk County, IA, Buchanan County, IA, Cedar County, IA, Clinton County, IA, Davis County, IA, Delaware County, IA, Des Moines County, IA, Dubuque County, IA, Henry County, IA, Iowa County, IA, Jackson County, IA, Jefferson County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Lee County, IA, Linn County, IA, Louisa County, IA, Mahaska County, IA, Monroe County, IA, Muscatine County, IA, Poweshiek County, IA, Scott County, IA, Tama County, IA, Van Buren County, IA, Wapello County, IA, Washington County, IA, Adams County, IL, Hancock County, IL, Henderson County, IL, Jo Daviess County, IL, McDonough County, IL, Mercer County, IL, Rock Island County, IL, Warren County, IL, Adair County, MO, Clark County, MO, Knox County, MO, Lewis County, MO, Linn County, MO, Macon County, MO, Marion County, MO, Putnam County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, Sullivan County, MO

The radar

The Quad Cities radar (KDVN), 139 km from the middle of the area, began a volume at 20:22 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 11, 8:32 PM CDTMesoscale DiscussionSPCDeWitt, Ford, Iroquois, Livingston, McLean58 min
May 12, 9:51 AM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 13 more84 min
May 12, 10:02 AM CDTSevere Thunderstorm WatchSPCBoone, Cook, DeKalb, DuPage, Kane, Lake and 4 more6 hr
May 12, 11:54 AM CDTMesoscale DiscussionSPCAdams, Brown, Bureau, Carroll, Fulton, Hancock and 16 more2 hr
May 12, 1:00 PM CDTSevere Thunderstorm WatchSPCAdams, Bureau, Carroll, Hancock, Henderson, Henry and 8 more7 hr
May 12, 1:06 PM CDTMesoscale DiscussionSPCBoone, Cook, DeKalb, DuPage, Kane, Lake and 6 more54 min
May 12, 3:49 PM CDTSevere Thunderstorm WatchSPCBoone, Cook, DeKalb, DuPage, Kane, Kendall and 6 more7 hr
May 12, 6:56 PM CDTMesoscale DiscussionSPCBoone, Jo Daviess, Lake, McHenry, Stephenson, Winnebago64 min
May 11, 7:04 PM CDTMesoscale DiscussionSPCAdair, Audubon, Boone, Calhoun, Carroll, Clarke and 21 more56 min
May 11, 7:49 PM CDTTornado WatchSPCAdair, Adams, Appanoose, Audubon, Black Hawk, Boone and 38 more7 hr
May 11, 9:31 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Buena Vista, Calhoun and 31 more59 min
May 11, 9:56 PM CDTSevere Thunderstorm WatchSPCFremont, Mills, Montgomery, Page6 hr
May 11, 11:01 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Black Hawk, Boone and 40 more59 min
May 12, 2:38 AM CDTMesoscale DiscussionSPCBates, Buchanan, Carroll, Cass, Clay, Clinton and 8 more2 hr
May 12, 3:15 AM CDTSevere Thunderstorm WatchSPCCaldwell, Carroll, Cass, Chariton, Clay, Clinton and 13 more3 hr
May 12, 11:52 AM CDTMesoscale DiscussionSPCMcDonald, Newton83 min
May 12, 2:12 PM CDTMesoscale DiscussionSPCAudrain, Barry, Barton, Bates, Benton, Boone and 37 more2 hr

Nearby

Mesoscale Discussions in Iowa, 2014Mesoscale Discussions in Missouri, 2014Mesoscale Discussions in Illinois, 2014Every mesoscale discussion in 2014

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.