Alert archive / North Carolina / Mesoscale Discussions in 2011
Mesoscale Discussion 711
The Storm Prediction Center issued this mesoscale discussion at May 10, 2011, 2:18 PM EDT for 4 states. It was in force for 87 min.
The area
The outline as issued.
The facts
- Issued
- May 10, 2011, 2:18 PM EDT (18:18 UTC)
- Expired
- May 10, 2011, 3:45 PM EDT
- In force
- 87 min
- Issued by
- the Storm Prediction Center
All 76 counties
Alexander County, NC, Alleghany County, NC, Anson County, NC, Ashe County, NC, Avery County, NC, Bladen County, NC, Burke County, NC, Cabarrus County, NC, Caldwell County, NC, Catawba County, NC, Cleveland County, NC, Columbus County, NC, Cumberland County, NC, Davidson County, NC, Davie County, NC, Forsyth County, NC, Gaston County, NC, Hoke County, NC, Iredell County, NC, Lee County, NC, Lincoln County, NC, McDowell County, NC, Mecklenburg County, NC, Mitchell County, NC, Montgomery County, NC, Moore County, NC, Polk County, NC, Randolph County, NC, Richmond County, NC, Robeson County, NC, Rowan County, NC, Rutherford County, NC, Scotland County, NC, Stanly County, NC, Stokes County, NC, Surry County, NC, Union County, NC, Watauga County, NC, Wilkes County, NC, Yadkin County, NC, Yancey County, NC, Cherokee County, SC, Chester County, SC, Chesterfield County, SC, Clarendon County, SC, Darlington County, SC, Dillon County, SC, Fairfield County, SC, Florence County, SC, Horry County, SC, Kershaw County, SC, Lancaster County, SC, Lee County, SC, Marion County, SC, Marlboro County, SC, Richland County, SC, Spartanburg County, SC, Sumter County, SC, Union County, SC, Williamsburg County, SC, York County, SC, Carter County, TN, Johnson County, TN, Sullivan County, TN, Unicoi County, TN, Washington County, TN, Bland County, VA, Carroll County, VA, City of Bristol, VA, City of Galax, VA, Grayson County, VA, Russell County, VA, Smyth County, VA, Tazewell County, VA, Washington County, VA, Wythe County, VA
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 6.3 hours before the alert went out and 68 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1295 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 228 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 11:21 AM EDT | Mesoscale Discussion | SPC | Alleghany, Ashe, Avery, McDowell, Mitchell, Watauga and 1 more | 114 min |
| May 10, 3:20 PM EDT | Severe Thunderstorm Watch | SPC | Alexander, Alleghany, Anson, Ashe, Avery, Bladen and 42 more | 8 hr |
| May 10, 6:02 PM EDT | Mesoscale Discussion | SPC | Alexander, Alleghany, Anson, Ashe, Avery, Bladen and 46 more | 58 min |
| May 10, 7:45 PM EDT | Severe Thunderstorm Watch | SPC | Buchanan, Dickenson | 5 hr |
Nearby
Mesoscale Discussions in North Carolina, 2011Mesoscale Discussions in South Carolina, 2011Mesoscale Discussions in Virginia, 2011Every mesoscale discussion in 2011
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.