Alert archive / Illinois / Mesoscale Discussions in 2006

Mesoscale Discussion 229

March 11, 200644 counties in Illinois; 6 counties in Indiana; 5 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Mar 11, 2006, 3:34 AM CST for 44 counties in Illinois; 6 counties in Indiana; 5 counties in Missouri. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued
Mar 11, 2006, 3:34 AM CST (09:34 UTC)
Expired
Mar 11, 2006, 5:00 AM CST
In force
86 min
Issued by
the Storm Prediction Center
All 55 counties

Adams County, IL, Bond County, IL, Brown County, IL, Calhoun 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, Effingham County, IL, Fayette County, IL, Fulton County, IL, Greene County, IL, Jasper County, IL, Jersey County, IL, Lawrence County, IL, Logan County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Mason County, IL, McDonough County, IL, McLean County, IL, Menard County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Piatt County, IL, Pike County, IL, Richland County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Shelby County, IL, Tazewell County, IL, Vermilion County, IL, Clay County, IN, Knox County, IN, Parke County, IN, Sullivan County, IN, Vermillion County, IN, Vigo County, IN, City of Saint Louis, MO, Lincoln County, MO, Pike County, MO, Saint Charles County, MO, Saint Louis County, MO

The radar

The Lincoln radar (KILX), 70 km from the middle of the area, began a volume at 09:35 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 00:00Z, 9.6 hours before the alert went out and 101 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.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2006-03-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2006-03-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1129 m above ground
0-6 km bulk shear
73 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
162 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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.

IssuedProductOfficeCountiesLasted
Mar 11, 1:29 AM CSTMesoscale DiscussionSPCAlexander, Bond, Clay, Clinton, Edwards, Franklin and 21 more2 hr
Mar 11, 1:51 AM CSTSevere Thunderstorm WatchSPCAlexander, Clinton, Edwards, Franklin, Gallatin, Hamilton and 19 more6 hr
Mar 11, 5:53 AM CSTMesoscale DiscussionSPCAlexander, Clinton, Edwards, Franklin, Gallatin, Hamilton and 21 more97 min
Mar 11, 9:36 AM CSTMesoscale DiscussionSPCAlexander, Bond, Calhoun, Clay, Clinton, Fayette and 17 more54 min
Mar 11, 1:25 PM CSTMesoscale DiscussionSPCAdams, Brown, Bureau, Calhoun, Cass, Christian and 37 more95 min
Mar 11, 2:22 PM CSTTornado WatchSPCAdams, Bond, Brown, Bureau, Calhoun, Cass and 53 more8 hr
Mar 11, 3:52 PM CSTMesoscale DiscussionSPCAdams, Bond, Brown, Bureau, Calhoun, Cass and 41 more83 min
Mar 11, 5:46 PM CSTMesoscale DiscussionSPCBoone, Carroll, DeKalb, Kane, McHenry, Ogle and 2 more89 min
Mar 11, 3:08 AM CSTMesoscale DiscussionSPCPerry, Spencer, Vanderburgh, Warrick97 min
Mar 11, 3:30 AM CSTSevere Thunderstorm WatchSPCCrawford, Dubois, Gibson, Harrison, Orange, Perry and 6 more6 hr
Mar 10, 10:12 PM CSTMesoscale DiscussionSPCBarry, Barton, Bates, Benton, Camden, Cedar and 22 more93 min
Mar 10, 10:59 PM CSTSevere Thunderstorm WatchSPCDouglas, Howell, Oregon, Ozark, Shannon, Taney and 2 more6 hr
Mar 11, 4:25 AM CSTMesoscale DiscussionSPCCarter, Christian, Douglas, Howell, Oregon, Ozark and 3 more65 min
Mar 11, 11:59 AM CSTMesoscale DiscussionSPCBarry, Barton, Cedar, Christian, Dade, Dallas and 11 more2 hr
Mar 11, 12:47 PM CSTTornado WatchSPCBarry, Barton, Benton, Camden, Cedar, Christian and 28 more7 hr
Mar 11, 3:30 PM CSTMesoscale DiscussionSPCBarry, Barton, Benton, Boone, Callaway, Camden and 32 more90 min

Nearby

Mesoscale Discussions in Illinois, 2006Mesoscale Discussions in Indiana, 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.