Alert archive / Illinois / Mesoscale Discussions in 2011
Mesoscale Discussion 1748
The Storm Prediction Center issued this mesoscale discussion at Jul 26, 2011, 1:11 PM CDT for 50 counties in Illinois; 25 counties in Indiana. It was in force for 94 min.
The area
The outline as issued.
The facts
- Issued
- Jul 26, 2011, 1:11 PM CDT (18:11 UTC)
- Expired
- Jul 26, 2011, 2:45 PM CDT
- In force
- 94 min
- Issued by
- the Storm Prediction Center
All 75 counties
Bond County, IL, Cass County, IL, Champaign County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, DeWitt County, IL, Douglas County, IL, Edgar County, IL, Edwards County, IL, Effingham County, IL, Fayette County, IL, Ford County, IL, Fulton County, IL, Grundy County, IL, Iroquois County, IL, Jasper County, IL, Kankakee County, IL, Kendall County, IL, Knox County, IL, LaSalle County, IL, Lawrence County, IL, Livingston County, IL, Logan County, IL, Macon County, IL, Macoupin County, IL, Marion County, IL, Marshall County, IL, Mason County, IL, McLean County, IL, Menard County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Peoria County, IL, Piatt County, IL, Putnam County, IL, Richland County, IL, Sangamon County, IL, Shelby County, IL, Stark County, IL, Tazewell County, IL, Vermilion County, IL, Wabash County, IL, Wayne County, IL, Woodford County, IL, Benton County, IN, Boone County, IN, Clay County, IN, Daviess County, IN, Dubois County, IN, Fountain County, IN, Gibson County, IN, Greene County, IN, Hendricks County, IN, Knox County, IN, Lawrence County, IN, Martin County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Orange County, IN, Owen County, IN, Parke County, IN, Pike County, IN, Putnam County, IN, Sullivan County, IN, Tippecanoe County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN
The radar
The Lincoln radar (KILX), 98 km from the middle of the area, began a volume at 18:14 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 nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 6.2 hours before the alert went out and 72 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 3058 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 766 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.2
The text
As transmitted, in the capitals the NWS used until 2016.
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Mesoscale Discussions in Illinois, 2011Mesoscale Discussions in Indiana, 2011Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.