Alert archive / Illinois / Mesoscale Discussions in 2006
Mesoscale Discussion 263
The Storm Prediction Center issued this mesoscale discussion at Mar 12, 2006, 4:22 PM CST for 24 counties in Illinois; Lake County, Porter County, Indiana; 14 counties in Iowa. It was in force for 53 min.
The area
The outline as issued.
The facts
- Issued
- Mar 12, 2006, 4:22 PM CST (22:22 UTC)
- Expired
- Mar 12, 2006, 5:15 PM CST
- In force
- 53 min
- Issued by
- the Storm Prediction Center
All 40 counties
Cedar County, IA, Clinton County, IA, Des Moines County, IA, Henry County, IA, Iowa County, IA, Jefferson County, IA, Johnson County, IA, Keokuk County, IA, Louisa County, IA, Muscatine County, IA, Scott County, IA, Van Buren County, IA, Wapello County, IA, Washington County, IA, Bureau County, IL, Carroll County, IL, DeKalb County, IL, DuPage County, IL, Grundy County, IL, Henderson County, IL, Henry County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Knox County, IL, LaSalle County, IL, Lee County, IL, Livingston County, IL, Marshall County, IL, Mercer County, IL, Ogle County, IL, Peoria County, IL, Putnam County, IL, Rock Island County, IL, Stark County, IL, Warren County, IL, Whiteside County, IL, Will County, IL, Lake County, IN, Porter County, IN
The radar
The Quad Cities radar (KDVN), 57 km from the middle of the area, began a volume at 22:23 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
Davenport, (KDVN), launched 12:00Z, 10.4 hours before the alert went out and 52 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
- 2570 m above ground
- 0-6 km bulk shear
- 94 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 144 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 |
|---|---|---|---|---|
| Mar 11, 6:39 PM CST | Mesoscale Discussion | SPC | Bond, Calhoun, Champaign, Christian, Clinton, DeWitt and 34 more | 66 min |
| Mar 11, 6:49 PM CST | Tornado Watch | SPC | Bond, Clinton, Fayette, Madison, Marion, Monroe and 3 more | 7 hr |
| Mar 11, 8:06 PM CST | Mesoscale Discussion | SPC | Bond, Champaign, Christian, Clark, Clay, Coles and 21 more | 84 min |
| Mar 11, 9:11 PM CST | Mesoscale Discussion | SPC | Clark, Clay, Coles, Crawford, Cumberland, Edgar and 18 more | 94 min |
| Mar 11, 9:55 PM CST | Tornado Watch | SPC | Franklin, Hamilton, Jackson, Jefferson, Perry, Wayne and 1 more | 3 hr |
| Mar 11, 10:50 PM CST | Mesoscale Discussion | SPC | Wabash | 55 min |
| Mar 11, 11:10 PM CST | Tornado Watch | SPC | Edwards, Wabash, White | 2 hr |
| Mar 11, 11:13 PM CST | Mesoscale Discussion | SPC | Franklin, Jackson, Jefferson, Monroe, Perry, Randolph and 4 more | 92 min |
| Mar 12, 1:07 AM CST | Tornado Watch | SPC | Alexander, Clay, Clinton, Edwards, Franklin, Gallatin and 22 more | 7 hr |
| Mar 12, 3:39 AM CST | Mesoscale Discussion | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 16 more | 96 min |
| Mar 12, 10:02 AM CST | Severe Thunderstorm Watch | SPC | Adams, Brown, Calhoun, Pike | 110 min |
| Mar 12, 11:17 AM CST | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Cass, Champaign, Christian and 28 more | 88 min |
| Mar 12, 11:49 AM CST | Tornado Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 30 more | 10 hr |
| Mar 12, 1:02 PM CST | Mesoscale Discussion | SPC | Edwards, Gallatin, Hamilton, Hardin, Johnson, Pope and 5 more | 88 min |
| Mar 12, 2:33 PM CST | Mesoscale Discussion | SPC | Bureau, Carroll, DeKalb, Grundy, Henderson, Henry and 13 more | 87 min |
| Mar 12, 3:02 PM CST | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Greene, Jersey, Macoupin and 6 more | 88 min |
| Mar 12, 4:49 PM CST | Tornado Watch | SPC | Bureau, Ford, Grundy, Henderson, Henry, Iroquois and 11 more | 5 hr |
| Mar 12, 5:06 PM CST | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 26 more | 84 min |
| Mar 12, 6:54 AM CST | Mesoscale Discussion | SPC | Perry, Spencer | 96 min |
| Mar 12, 5:54 PM CST | Mesoscale Discussion | SPC | Allen, DeKalb, Elkhart, Fulton, Huntington, Kosciusko and 10 more | 96 min |
| Mar 12, 12:10 PM CST | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Cass, Clarke, Dallas and 29 more | 95 min |
Nearby
Mesoscale Discussions in Illinois, 2006Mesoscale Discussions in Iowa, 2006Mesoscale Discussions in Indiana, 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.