Alert archive / Virginia / Mesoscale Discussions in 2006

Mesoscale Discussion 1561

July 19, 200610 counties in North Carolina; 59 counties in Virginia; Monroe County, Pendleton County, West Virginia

The Storm Prediction Center issued this mesoscale discussion at Jul 19, 2006, 2:07 PM EDT for 10 counties in North Carolina; 59 counties in Virginia; Monroe County, Pendleton County, West Virginia. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jul 19, 2006, 2:07 PM EDT (18:07 UTC)
Expired: Jul 19, 2006, 4:30 PM EDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 71 counties

Alamance County, NC, Caswell County, NC, Durham County, NC, Granville County, NC, Guilford County, NC, Orange County, NC, Person County, NC, Rockingham County, NC, Stokes County, NC, Vance County, NC, Albemarle County, VA, Alleghany County, VA, Amelia County, VA, Amherst County, VA, Appomattox County, VA, Augusta County, VA, Bath County, VA, Bedford County, VA, Botetourt County, VA, Buckingham County, VA, Campbell County, VA, Charlotte County, VA, City of Buena Vista, VA, City of Charlottesville, VA, City of Covington, VA, City of Danville, VA, City of Fredericksburg, VA, City of Harrisonburg, VA, City of Lexington, VA, City of Lynchburg, VA, City of Martinsville, VA, City of Radford, VA, City of Roanoke, VA, City of Salem, VA, City of Staunton, VA, City of Waynesboro, VA, Craig County, VA, Culpeper County, VA, Cumberland County, VA, Fauquier County, VA, Floyd County, VA, Fluvanna County, VA, Franklin County, VA, Giles County, VA, Goochland County, VA, Greene County, VA, Halifax County, VA, Henry County, VA, Highland County, VA, Louisa County, VA, Lunenburg County, VA, Madison County, VA, Mecklenburg County, VA, Montgomery County, VA, Nelson County, VA, Nottoway County, VA, Orange County, VA, Page County, VA, Patrick County, VA, Pittsylvania County, VA, Powhatan County, VA, Prince Edward County, VA, Pulaski County, VA, Rappahannock County, VA, Roanoke County, VA, Rockbridge County, VA, Rockingham County, VA, Shenandoah County, VA, Spotsylvania County, VA, Monroe County, WV, Pendleton County, WV

The radar

The Roanoke radar (KFCX), 120 km from the middle of the area, began a volume at 18:08 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

Roanoke, VA (KRNK), launched 12:00Z, 6.1 hours before the alert went out and 56 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: 662 J/kg
Mixed-layer CIN: -89 J/kg
Mixed-layer LCL: 1045 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: -12 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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Nearby

Mesoscale Discussions in Virginia, 2006 Mesoscale Discussions in North Carolina, 2006 Mesoscale Discussions in West 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.