Alert archive / Illinois / Mesoscale Discussions in 2008
Mesoscale Discussion 135
The Storm Prediction Center issued this mesoscale discussion at Feb 3, 2008, 4:42 PM CST for 5 states. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 3, 2008, 4:42 PM CST (22:42 UTC)
- Expired
- Feb 3, 2008, 8:45 PM CST
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 66 counties
Clinton County, IA, Scott County, IA, Boone County, IL, Bureau County, IL, Carroll County, IL, Cass County, IL, Champaign County, IL, Cook County, IL, DeKalb County, IL, DeWitt County, IL, DuPage County, IL, Ford County, IL, Fulton County, IL, Grundy County, IL, Henry County, IL, Iroquois 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, Logan County, IL, Macon County, IL, Marshall County, IL, Mason County, IL, McHenry County, IL, McLean County, IL, Menard County, IL, Ogle County, IL, Peoria County, IL, Piatt County, IL, Putnam County, IL, Rock Island County, IL, Sangamon County, IL, Stark County, IL, Tazewell County, IL, Vermilion County, IL, Whiteside County, IL, Will County, IL, Winnebago County, IL, Woodford County, IL, Benton County, IN, Carroll County, IN, Cass County, IN, Elkhart County, IN, Fulton County, IN, Jasper County, IN, Lake County, IN, LaPorte County, IN, Marshall County, IN, Newton County, IN, Porter County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Tippecanoe County, IN, Warren County, IN, White County, IN, Allegan County, MI, Berrien County, MI, Cass County, MI, Van Buren County, MI, Kenosha County, WI
The radar
The Chicago radar (KLOT), 64 km from the middle of the area, began a volume at 22:43 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, 10.7 hours before the alert went out and 105 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 759 m above ground
- 0-6 km bulk shear
- 85 kt
- 0-1 km storm-relative helicity
- -57 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 3, 12:10 PM CST | Mesoscale Discussion | SPC | Adams, Brown, Cass, Christian, DeWitt, Fulton and 19 more | 4 hr |
Nearby
Mesoscale Discussions in Illinois, 2008Mesoscale Discussions in Indiana, 2008Mesoscale Discussions in Michigan, 2008Every mesoscale discussion in 2008
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.