Alert archive / Missouri / Mesoscale Discussions in 2008

Mesoscale Discussion 2255

September 12, 20086 counties in Kansas; 12 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Sep 12, 2008, 7:11 PM CDT for 6 counties in Kansas; 12 counties in Missouri. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued: Sep 12, 2008, 7:11 PM CDT (00:11 UTC)
Expired: Sep 12, 2008, 8:45 PM CDT
In force: 94 min
Issued by: the Storm Prediction Center

Counties Anderson County, KS, Coffey County, KS, Franklin County, KS, Johnson County, KS, Linn County, KS, Miami County, KS, Bates County, MO, Carroll County, MO, Cass County, MO, Cooper County, MO, Henry County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Pettis County, MO, Ray County, MO, Saline County, MO

The radar

The Pleasant Hill radar (KEAX), 13 km from the middle of the area, began a volume at 00:14 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

Topeka, KS (KTOP), launched 00:00Z, 0.2 hours before the alert went out and 128 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 242 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 801 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 196 m²/s²
0-3 km storm-relative helicity: 227 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.1

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.

Issued	Product	Office	Counties	Lasted
Sep 13, 5:27 PM CDT	Mesoscale Discussion	SPC	Lincoln, Pike	2 hr

Nearby

Mesoscale Discussions in Missouri, 2008 Mesoscale Discussions in Kansas, 2008 Every mesoscale discussion in 2008

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.