Alert archive / Tennessee / Mesoscale Discussions in 2006

Mesoscale Discussion 27

January 2, 20065 states

The Storm Prediction Center issued this mesoscale discussion at Jan 2, 2006, 8:29 PM EST for 5 states. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued: Jan 2, 2006, 8:29 PM EST (01:29 UTC)
Expired: Jan 2, 2006, 10:00 PM EST
In force: 91 min
Issued by: the Storm Prediction Center

All 32 counties

Bell County, KY, Floyd County, KY, Harlan County, KY, Knott County, KY, Letcher County, KY, Martin County, KY, Pike County, KY, Madison County, NC, Blount County, TN, Claiborne County, TN, Cocke County, TN, Grainger County, TN, Greene County, TN, Hamblen County, TN, Hancock County, TN, Hawkins County, TN, Jefferson County, TN, Knox County, TN, Sevier County, TN, Sullivan County, TN, Unicoi County, TN, Union County, TN, Washington County, TN, Buchanan County, VA, City of Norton, VA, Dickenson County, VA, Lee County, VA, Russell County, VA, Scott County, VA, Wise County, VA, Logan County, WV, Mingo County, WV

The radar

The Knoxville radar (KMRX), 81 km from the middle of the area, began a volume at 01:30 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 1.5 hours before the alert went out and 312 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: 360 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 741 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 171 m²/s²
0-3 km storm-relative helicity: 121 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.

Issued	Product	Office	Counties	Lasted
Jan 2, 10:21 PM EST	Mesoscale Discussion	SPC	Anson, Bladen, Columbus, Craven, Cumberland, Duplin and 15 more	114 min

Nearby

Mesoscale Discussions in Tennessee, 2006 Mesoscale Discussions in Kentucky, 2006 Mesoscale Discussions in Virginia, 2006 Every 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.