Alert archive / Virginia / Mesoscale Discussions in 2006

Mesoscale Discussion 981

May 26, 20064 states

The Storm Prediction Center issued this mesoscale discussion at May 26, 2006, 2:11 AM EDT for 4 states. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued: May 26, 2006, 2:11 AM EDT (06:11 UTC)
Expired: May 26, 2006, 3:45 AM EDT
In force: 94 min
Issued by: the Storm Prediction Center

All 53 counties

Bell County, KY, Harlan County, KY, Knott County, KY, Knox County, KY, Leslie County, KY, Letcher County, KY, Perry County, KY, Whitley County, KY, Alleghany County, NC, Ashe County, NC, Stokes County, NC, Surry County, NC, Campbell County, TN, Carter County, TN, Claiborne County, TN, Grainger County, TN, Greene County, TN, Hamblen County, TN, Hancock County, TN, Hawkins County, TN, Jefferson County, TN, Johnson County, TN, Knox County, TN, Sullivan County, TN, Union County, TN, Washington County, TN, Bland County, VA, Buchanan County, VA, Carroll County, VA, City of Bristol, VA, City of Danville, VA, City of Galax, VA, City of Martinsville, VA, City of Norton, VA, City of Radford, VA, Dickenson County, VA, Floyd County, VA, Franklin County, VA, Grayson County, VA, Halifax County, VA, Henry County, VA, Lee County, VA, Montgomery County, VA, Patrick County, VA, Pittsylvania County, VA, Pulaski County, VA, Russell County, VA, Scott County, VA, Smyth County, VA, Tazewell County, VA, Washington County, VA, Wise County, VA, Wythe County, VA

The radar

The Knoxville radar (KMRX), 125 km from the middle of the area, began a volume at 06:12 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, 6.2 hours before the alert went out and 327 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: 1488 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 1193 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 98 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.7

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
May 25, 8:39 PM EDT	Mesoscale Discussion	SPC	Adair, Bath, Bell, Boyd, Boyle, Breathitt and 48 more	96 min
May 25, 8:53 PM EDT	Severe Thunderstorm Watch	SPC	Bath, Bell, Boyd, Breathitt, Carter, Clay and 27 more	6 hr
May 26, 5:35 PM EDT	Severe Thunderstorm Watch	SPC	Calloway, Fulton, Graves, Hickman	6 hr
May 26, 11:42 AM EDT	Mesoscale Discussion	SPC	Alleghany, Ashe, Avery, Caldwell, Madison, Mitchell and 3 more	2 hr
May 26, 1:57 PM EDT	Mesoscale Discussion	SPC	Alamance, Anson, Beaufort, Bertie, Bladen, Brunswick and 62 more	93 min
May 26, 2:12 PM EDT	Severe Thunderstorm Watch	SPC	Anson, Beaufort, Bertie, Bladen, Brunswick, Camden and 44 more	9 hr
May 26, 3:53 PM EDT	Severe Thunderstorm Watch	SPC	Alamance, Alexander, Alleghany, Ashe, Avery, Buncombe and 38 more	7 hr
May 26, 7:21 PM EDT	Mesoscale Discussion	SPC	Alamance, Alexander, Alleghany, Anson, Ashe, Avery and 88 more	84 min
May 26, 1:53 AM EDT	Severe Thunderstorm Watch	SPC	Bedford, Benton, Cannon, Carroll, Chester, Coffee and 35 more	4 hr
May 26, 4:57 AM EDT	Mesoscale Discussion	SPC	Chester, Fayette, Franklin, Giles, Grundy, Hardeman and 8 more	93 min
May 26, 6:57 PM EDT	Severe Thunderstorm Watch	SPC	Bedford, Benton, Cannon, Cheatham, Coffee, Davidson and 22 more	5 hr

Nearby

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