Alert archive / Michigan / Mesoscale Discussions in 2011

Mesoscale Discussion 1779

July 28, 201115 counties in Illinois; 5 counties in Indiana; 16 counties in Michigan

The Storm Prediction Center issued this mesoscale discussion at Jul 28, 2011, 11:51 PM CDT for 15 counties in Illinois; 5 counties in Indiana; 16 counties in Michigan. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued: Jul 28, 2011, 11:51 PM CDT (04:51 UTC)
Expired: Jul 29, 2011, 1:15 AM CDT
In force: 84 min
Issued by: the Storm Prediction Center

All 36 counties

Boone County, IL, Bureau County, IL, Cook County, IL, DeKalb County, IL, DuPage County, IL, Kane County, IL, Kendall County, IL, Lake County, IL, LaSalle County, IL, Lee County, IL, McHenry County, IL, Ogle County, IL, Whiteside County, IL, Will County, IL, Winnebago County, IL, Elkhart County, IN, Lake County, IN, LaPorte County, IN, Porter County, IN, Saint Joseph County, IN, Allegan County, MI, Barry County, MI, Berrien County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Eaton County, MI, Hillsdale County, MI, Ingham County, MI, Jackson County, MI, Kalamazoo County, MI, Lenawee County, MI, Livingston County, MI, Saint Joseph County, MI, Van Buren County, MI, Washtenaw County, MI

The radar

The Chicago radar (KLOT), 94 km from the middle of the area, began a volume at 04:55 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.

Severe Thunderstorm Watch 697Jul 29, 1:15 AM 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
Jul 29, 3:51 PM CDT	Mesoscale Discussion	SPC	Champaign, Clark, Coles, Cumberland, Douglas, Edgar and 2 more	84 min
Jul 29, 1:15 AM CDT	Severe Thunderstorm Watch	SPC	Elkhart, LaGrange, LaPorte, Saint Joseph, Steuben	6 hr
Jul 29, 2:31 AM CDT	Mesoscale Discussion	SPC	DeKalb, Elkhart, LaGrange, Steuben	89 min

Nearby

Mesoscale Discussions in Michigan, 2011 Mesoscale Discussions in Illinois, 2011 Mesoscale Discussions in Indiana, 2011 Every mesoscale discussion in 2011

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.