Alert archive / Missouri / Mesoscale Discussions in 2011

Mesoscale Discussion 1206

June 13, 20118 counties in Illinois; 56 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Jun 13, 2011, 10:04 AM CDT for 8 counties in Illinois; 56 counties in Missouri. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued
Jun 13, 2011, 10:04 AM CDT (15:04 UTC)
Expired
Jun 13, 2011, 11:30 AM CDT
In force
86 min
Issued by
the Storm Prediction Center
All 64 counties

Adams County, IL, Calhoun County, IL, Greene County, IL, Jersey County, IL, Monroe County, IL, Morgan County, IL, Pike County, IL, Scott County, IL, Adair County, MO, Audrain County, MO, Benton County, MO, Boone County, MO, Caldwell County, MO, Callaway County, MO, Camden County, MO, Carroll County, MO, Chariton County, MO, City of Saint Louis, MO, Cole County, MO, Cooper County, MO, Crawford County, MO, Daviess County, MO, Franklin County, MO, Gasconade County, MO, Grundy County, MO, Harrison County, MO, Henry County, MO, Howard County, MO, Iron County, MO, Jefferson County, MO, Johnson County, MO, Knox County, MO, Lafayette County, MO, Lewis County, MO, Lincoln County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Madison County, MO, Maries County, MO, Marion County, MO, Mercer County, MO, Miller County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Morgan County, MO, Osage County, MO, Pettis County, MO, Phelps County, MO, Pike County, MO, Pulaski County, MO, Ralls County, MO, Randolph County, MO, Ray County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Saline County, MO, Shelby County, MO, Sullivan County, MO, Warren County, MO, Washington County, MO

The radar

The St Louis radar (KLSX), 104 km from the middle of the area, began a volume at 15:04 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, 3.1 hours before the alert went out and 289 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 12:00Z on 2011-06-13Temperature 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 12:00Z on 2011-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 square meters per square second.193958Sfc1 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
1547 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
106 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
Jun 13, 5:16 AM CDTSevere Thunderstorm WatchSPCAdams, Brown, Calhoun, Greene, Jersey, Macoupin and 5 more8 hr
Jun 13, 6:52 AM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Greene, Jersey, Macoupin and 5 more83 min
Jun 13, 9:06 AM CDTMesoscale DiscussionSPCAlexander, Pulaski, Union54 min
Jun 13, 2:41 AM CDTMesoscale DiscussionSPCBates, Benton, Buchanan, Camden, Cass, Cedar and 19 more2 hr
Jun 13, 10:05 AM CDTSevere Thunderstorm WatchSPCButler, Carter, Douglas, Dunklin, Howell, New Madrid and 6 more8 hr
Jun 13, 3:25 PM CDTMesoscale DiscussionSPCDouglas, Howell, Ozark, Taney35 min

Nearby

Mesoscale Discussions in Missouri, 2011Mesoscale Discussions in Illinois, 2011Every mesoscale discussion in 2011

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.