Alert archive / Illinois / Mesoscale Discussions in 2007

Mesoscale Discussion 1731

August 12, 20078 counties in Illinois; Lake County, Porter County, Indiana

The Storm Prediction Center issued this mesoscale discussion at Aug 12, 2007, 3:05 AM CDT for 8 counties in Illinois; Lake County, Porter County, Indiana. It was in force for 55 min.

The area

The outline as issued.

The facts

Issued: Aug 12, 2007, 3:05 AM CDT (08:05 UTC)
Expired: Aug 12, 2007, 4:00 AM CDT
In force: 55 min
Issued by: the Storm Prediction Center

Counties Cook County, IL, DuPage County, IL, Grundy County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Lake County, IL, Will County, IL, Lake County, IN, Porter County, IN

The radar

The Chicago radar (KLOT), 9 km from the middle of the area, began a volume at 08:07 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 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
Aug 12, 1:20 AM CDT	Mesoscale Discussion	SPC	Boone, Carroll, DeKalb, DuPage, Jo Daviess, Kane and 8 more	25 min

Nearby

Mesoscale Discussions in Illinois, 2007 Mesoscale Discussions in Indiana, 2007 Every mesoscale discussion in 2007

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.