Alert archive / Illinois / Mesoscale Discussions in 2014

Mesoscale Discussion 567

May 11, 20144 states

The Storm Prediction Center issued this mesoscale discussion at May 11, 2014, 5:09 PM CDT for 4 states. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued: May 11, 2014, 5:09 PM CDT (22:09 UTC)
Expired: May 11, 2014, 6:15 PM CDT
In force: 66 min
Issued by: the Storm Prediction Center

All 37 counties

Des Moines County, IA, Henry County, IA, Jefferson County, IA, Lee County, IA, Louisa County, IA, Van Buren County, IA, Wapello County, IA, Boone County, IL, Bureau County, IL, Cook County, IL, DeKalb County, IL, DuPage County, IL, Grundy County, IL, Henderson County, IL, Henry County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Knox County, IL, Lake County, IL, LaSalle County, IL, Lee County, IL, Livingston County, IL, Marshall County, IL, McHenry County, IL, Mercer County, IL, Peoria County, IL, Putnam County, IL, Rock Island County, IL, Stark County, IL, Warren County, IL, Will County, IL, Winnebago County, IL, Woodford County, IL, Lake County, IN, Kenosha County, WI, Walworth County, WI

The radar

The Quad Cities radar (KDVN), 65 km from the middle of the area, began a volume at 22:09 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.

Tornado Watch 145May 11, 7:45 PM CDT

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.

Issued	Product	Office	Counties	Lasted
May 10, 7:55 PM CDT	Mesoscale Discussion	SPC	Calhoun, Greene, Jersey, Macoupin, Madison, Monroe and 2 more	95 min
May 10, 10:22 PM CDT	Mesoscale Discussion	SPC	Calhoun, Jersey, Madison, Monroe, Randolph, Saint Clair	83 min
May 11, 9:16 AM CDT	Mesoscale Discussion	SPC	Mercer, Rock Island	89 min
May 11, 10:47 AM CDT	Mesoscale Discussion	SPC	Hancock	118 min
May 11, 11:53 AM CDT	Tornado Watch	SPC	Carroll, Henderson, Henry, Mercer, Rock Island, Warren and 1 more	7 hr
May 11, 12:51 PM CDT	Mesoscale Discussion	SPC	Carroll, Henderson, Jo Daviess, Mercer, Rock Island, Whiteside	54 min
May 11, 2:36 PM CDT	Mesoscale Discussion	SPC	Mercer	84 min
May 11, 3:05 PM CDT	Severe Thunderstorm Watch	SPC	Boone, Bureau, Cook, DeKalb, DuPage, Ford and 23 more	7 hr
May 11, 5:49 PM CDT	Mesoscale Discussion	SPC	Clark, Coles, Edgar	56 min
May 11, 1:19 AM CDT	Mesoscale Discussion	SPC	Adams, Cass, Fremont, Harrison, Mills, Montgomery and 3 more	2 hr
May 11, 2:58 AM CDT	Severe Thunderstorm Watch	SPC	Fremont, Mills, Montgomery, Page, Pottawattamie	7 hr
May 11, 7:02 AM CDT	Mesoscale Discussion	SPC	Fremont, Mills, Montgomery, Page, Pottawattamie	118 min
May 11, 12:49 PM CDT	Mesoscale Discussion	SPC	Adams, Cass, Fremont, Mills, Montgomery, Page and 2 more	116 min
May 11, 2:21 PM CDT	Tornado Watch	SPC	Adair, Adams, Audubon, Cass, Fremont, Harrison and 8 more	8 hr
May 11, 6:23 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Cass, Fremont, Mills, Montgomery and 5 more	67 min

Nearby

Mesoscale Discussions in Illinois, 2014 Mesoscale Discussions in Iowa, 2014 Mesoscale Discussions in Wisconsin, 2014 Every 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.