Alert archive / Missouri / Mesoscale Discussions in 2006

Mesoscale Discussion 249

March 11, 20064 states

The Storm Prediction Center issued this mesoscale discussion at Mar 11, 2006, 11:13 PM CST for 4 states. It was in force for 92 min.

The area

The outline as issued.

The facts

Issued
Mar 11, 2006, 11:13 PM CST (05:13 UTC)
Expired
Mar 12, 2006, 12:45 AM CST
In force
92 min
Issued by
the Storm Prediction Center
All 80 counties

Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Cleburne County, AR, Conway County, AR, Crawford County, AR, Faulkner County, AR, Franklin County, AR, Fulton County, AR, Garland County, AR, Independence County, AR, Izard County, AR, Johnson County, AR, Logan County, AR, Madison County, AR, Marion County, AR, Montgomery County, AR, Newton County, AR, Perry County, AR, Polk County, AR, Pope County, AR, Randolph County, AR, Scott County, AR, Searcy County, AR, Sebastian County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, Washington County, AR, Yell County, AR, Franklin County, IL, Jackson County, IL, Jefferson County, IL, Monroe County, IL, Perry County, IL, Randolph County, IL, Saline County, IL, Union County, IL, Washington County, IL, Williamson County, IL, Barry County, MO, Bollinger County, MO, Cape Girardeau County, MO, Carter County, MO, Christian County, MO, Crawford County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Greene County, MO, Howell County, MO, Iron County, MO, Jefferson County, MO, Laclede County, MO, Lawrence County, MO, Madison County, MO, McDonald County, MO, Oregon County, MO, Ozark County, MO, Perry County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Reynolds County, MO, Ripley County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Shannon County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Washington County, MO, Wayne County, MO, Webster County, MO, Wright County, MO, Adair County, OK, Cherokee County, OK, LeFlore County, OK, Sequoyah County, OK

The radar

The Springfield radar (KSGF), 187 km from the middle of the area, began a volume at 05:17 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

Little Rock, AR (KLZK), launched 00:00Z, 5.2 hours before the alert went out and 245 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, Little Rock, AR at 00:00Z on 2006-03-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1322 joules per kilogram.LCLLFCEL10008507005003002001001 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, Little Rock, AR at 00:00Z on 2006-03-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 square meters per square second.19395878Sfc1 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
1322 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
1405 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
144 m²/s²
Significant tornado parameter
0.6
Supercell composite
4.3

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, 6:11 PM CSTMesoscale DiscussionSPCBenton, Boone, Carroll, Fulton, Marion, Washington2 hr
Mar 11, 6:49 PM CSTTornado WatchSPCBaxter, Benton, Boone, Carroll, Crawford, Franklin and 10 more7 hr
Mar 11, 7:48 PM CSTMesoscale DiscussionSPCPolk, Scott, Sebastian, Sevier87 min
Mar 11, 9:34 PM CSTTornado WatchSPCConway, Garland, Howard, Johnson, Logan, Montgomery and 8 more4 hr
Mar 12, 1:07 AM CSTTornado WatchSPCBaxter, Benton, Boone, Carroll, Fulton, Izard and 6 more7 hr
Mar 12, 3:39 AM CSTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Clay, Crawford and 17 more96 min
Mar 12, 12:46 PM CSTTornado WatchSPCBaxter, Benton, Boone, Carroll, Cleburne, Conway and 24 more9 hr
Mar 12, 3:38 PM CSTMesoscale DiscussionSPCBenton, Crawford, Franklin, Madison, Polk, Scott and 2 more2 hr
Mar 11, 6:39 PM CSTMesoscale DiscussionSPCBond, Calhoun, Champaign, Christian, Clinton, DeWitt and 34 more66 min
Mar 11, 8:06 PM CSTMesoscale DiscussionSPCBond, Champaign, Christian, Clark, Clay, Coles and 21 more84 min
Mar 11, 9:11 PM CSTMesoscale DiscussionSPCClark, Clay, Coles, Crawford, Cumberland, Edgar and 18 more94 min
Mar 11, 9:55 PM CSTTornado WatchSPCFranklin, Hamilton, Jackson, Jefferson, Perry, Wayne and 1 more3 hr
Mar 11, 10:50 PM CSTMesoscale DiscussionSPCWabash55 min
Mar 11, 11:10 PM CSTTornado WatchSPCEdwards, Wabash, White2 hr
Mar 12, 10:02 AM CSTSevere Thunderstorm WatchSPCAdams, Brown, Calhoun, Pike110 min
Mar 12, 11:17 AM CSTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, Champaign, Christian and 28 more88 min
Mar 12, 11:49 AM CSTTornado WatchSPCAdams, Bond, Brown, Calhoun, Cass, Christian and 30 more10 hr
Mar 12, 1:02 PM CSTMesoscale DiscussionSPCEdwards, Gallatin, Hamilton, Hardin, Johnson, Pope and 5 more88 min
Mar 12, 2:33 PM CSTMesoscale DiscussionSPCBureau, Carroll, DeKalb, Grundy, Henderson, Henry and 13 more87 min
Mar 12, 3:02 PM CSTMesoscale DiscussionSPCAdams, Brown, Calhoun, Greene, Jersey, Macoupin and 6 more88 min
Mar 12, 4:22 PM CSTMesoscale DiscussionSPCBureau, Carroll, DeKalb, DuPage, Grundy, Henderson and 18 more53 min
Mar 12, 4:49 PM CSTTornado WatchSPCBureau, Ford, Grundy, Henderson, Henry, Iroquois and 11 more5 hr
Mar 12, 5:06 PM CSTMesoscale DiscussionSPCAdams, Bond, Brown, Calhoun, Cass, Christian and 26 more84 min
Mar 12, 7:09 AM CSTMesoscale DiscussionSPCAndrew, Atchison, Buchanan, Clay, Clinton, DeKalb and 6 more96 min
Mar 12, 7:47 AM CSTSevere Thunderstorm WatchSPCAndrew, Atchison, Bates, Buchanan, Cass, Clay and 8 more4 hr
Mar 12, 11:29 AM CSTMesoscale DiscussionSPCMcDonald, Newton2 hr
Mar 12, 1:29 PM CSTMesoscale DiscussionSPCAudrain, Barton, Bates, Benton, Boone, Buchanan and 44 more91 min

Nearby

Mesoscale Discussions in Missouri, 2006Mesoscale Discussions in Arkansas, 2006Mesoscale Discussions in Illinois, 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.