Alert archive / Illinois / Mesoscale Discussions in 2006
Mesoscale Discussion 2004
The Storm Prediction Center issued this mesoscale discussion at Sep 22, 2006, 12:49 PM CDT for 44 counties in Illinois; 29 counties in Missouri. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 22, 2006, 12:49 PM CDT (17:49 UTC)
- Expired
- Sep 22, 2006, 3:15 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 73 counties
Adams County, IL, Alexander County, IL, Bond County, IL, Brown County, IL, Calhoun County, IL, Cass County, IL, Christian County, IL, Clay County, IL, Clinton County, IL, DeWitt County, IL, Effingham County, IL, Fayette County, IL, Franklin County, IL, Fulton County, IL, Greene County, IL, Jackson County, IL, Jefferson County, IL, Jersey County, IL, Johnson County, IL, Logan County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Mason County, IL, McLean County, IL, Menard County, IL, Monroe County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Perry County, IL, Pike County, IL, Pulaski County, IL, Randolph County, IL, Saint Clair County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Shelby County, IL, Tazewell County, IL, Union County, IL, Washington County, IL, Williamson County, IL, Bollinger County, MO, Callaway County, MO, Cape Girardeau County, MO, Carter County, MO, City of Saint Louis, MO, Crawford County, MO, Dent County, MO, Franklin County, MO, Gasconade County, MO, Iron County, MO, Jefferson County, MO, Lincoln County, MO, Madison County, MO, Maries County, MO, Montgomery County, MO, Osage County, MO, Perry County, MO, Phelps County, MO, Pike County, MO, Ralls County, MO, Reynolds County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Scott County, MO, Warren County, MO, Washington County, MO, Wayne County, MO
The radar
The St Louis radar (KLSX), 47 km from the middle of the area, began a volume at 17:50 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.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 5.8 hours before the alert went out and 214 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
- 831 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 571 m²/s²
- 0-3 km storm-relative helicity
- 612 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 |
|---|---|---|---|---|
| Sep 22, 1:16 PM CDT | Tornado Watch | SPC | Adams, Alexander, Bond, Brown, Calhoun, Cass and 42 more | 8 hr |
| Sep 22, 2:20 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 30 more | 2 hr |
| Sep 22, 2:55 PM CDT | Mesoscale Discussion | SPC | Gallatin, Hamilton, Hardin, Johnson, Massac, Pope and 2 more | 2 hr |
| Sep 22, 3:00 PM CDT | Mesoscale Discussion | SPC | Adams, Alexander, Bond, Brown, Calhoun, Cass and 45 more | 90 min |
| Sep 22, 3:32 PM CDT | Tornado Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 33 more | 6 hr |
| Sep 22, 3:37 PM CDT | Tornado Watch | SPC | Edwards, Gallatin, Hamilton, Hardin, Massac, Pope and 4 more | 8 hr |
| Sep 22, 5:08 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Brown, Calhoun, Cass, Christian and 44 more | 2 hr |
| Sep 22, 5:37 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Cook, DeKalb, DuPage, Ford and 24 more | 113 min |
| Sep 21, 7:58 PM CDT | Mesoscale Discussion | SPC | Barry, Barton, Jasper, Lawrence, McDonald, Newton | 2 hr |
| Sep 22, 4:08 AM CDT | Mesoscale Discussion | SPC | Butler, Dunklin, New Madrid, Pemiscot, Ripley, Stoddard | 67 min |
| Sep 22, 4:39 AM CDT | Tornado Watch | SPC | Dunklin, Pemiscot | 5 hr |
| Sep 22, 8:35 AM CDT | Mesoscale Discussion | SPC | Dunklin | 85 min |
| Sep 22, 9:10 AM CDT | Tornado Watch | SPC | Dunklin, Pemiscot | 9 hr |
| Sep 22, 11:10 AM CDT | Mesoscale Discussion | SPC | Barry, Camden, Christian, Dade, Dallas, Greene and 11 more | 95 min |
| Sep 22, 12:06 PM CDT | Tornado Watch | SPC | Barry, Camden, Cedar, Christian, Dade, Dallas and 24 more | 9 hr |
| Sep 22, 12:15 PM CDT | Mesoscale Discussion | SPC | Butler, Dunklin, Howell, New Madrid, Oregon, Ozark and 3 more | 90 min |
| Sep 22, 6:29 PM CDT | Tornado Watch | SPC | Dunklin, Pemiscot | 7 hr |
Nearby
Mesoscale Discussions in Illinois, 2006Mesoscale Discussions in Missouri, 2006Every mesoscale discussion in 2006
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.