Alert archive / Kentucky / Mesoscale Discussions in 2006

Mesoscale Discussion 2041

September 27, 20066 states

The Storm Prediction Center issued this mesoscale discussion at Sep 27, 2006, 8:04 PM CDT for 6 states. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued: Sep 27, 2006, 8:04 PM CDT (01:04 UTC)
Expired: Sep 27, 2006, 9:30 PM CDT
In force: 86 min
Issued by: the Storm Prediction Center

All 60 counties

Clay County, AR, Craighead County, AR, Greene County, AR, Lawrence County, AR, Randolph County, AR, Sharp County, AR, Alexander County, IL, Hardin County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Crawford County, IN, Dubois County, IN, Harrison County, IN, Orange County, IN, Perry County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Ballard County, KY, Breckinridge County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Fulton County, KY, Graves County, KY, Hancock County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Meade County, KY, Muhlenberg County, KY, Ohio County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Webster County, KY, Butler County, MO, Dunklin County, MO, Mississippi County, MO, New Madrid County, MO, Pemiscot County, MO, Ripley County, MO, Scott County, MO, Stoddard County, MO, Dyer County, TN, Gibson County, TN, Henry County, TN, Lake County, TN, Obion County, TN, Weakley County, TN

The radar

The Paducah radar (KPAH), 10 km from the middle of the area, began a volume at 01:06 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

Nashville Metro, TN (KBNA), launched 00:00Z, 1.1 hours before the alert went out and 225 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: 228 J/kg
Mixed-layer CIN: -81 J/kg
Mixed-layer LCL: 1973 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 111 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 28, 11:15 AM CDT	Mesoscale Discussion	SPC	Bell, Harlan, Letcher	90 min
Sep 28, 12:46 PM CDT	Severe Thunderstorm Watch	SPC	Blount, Bradley, Carter, Cocke, Grainger, Greene and 15 more	6 hr
Sep 28, 2:16 PM CDT	Mesoscale Discussion	SPC	Blount, Bradley, Carter, Cocke, Greene, Johnson and 6 more	89 min

Nearby

Mesoscale Discussions in Kentucky, 2006 Mesoscale Discussions in Indiana, 2006 Mesoscale Discussions in Missouri, 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.