Alert archive / Virginia / Mesoscale Discussions in 2019
Mesoscale Discussion 2134
The Storm Prediction Center issued this mesoscale discussion at Oct 31, 2019, 6:36 PM EDT for 32 counties in North Carolina; Chesterfield County, Lancaster County, Marlboro County, South Carolina; 38 counties in Virginia. It was in force for 114 min.
The area
The outline as issued.
The facts
- Issued
- Oct 31, 2019, 6:36 PM EDT (22:36 UTC)
- Expired
- Oct 31, 2019, 8:30 PM EDT
- In force
- 114 min
- Issued by
- the Storm Prediction Center
All 73 counties
Alamance County, NC, Anson County, NC, Caswell County, NC, Chatham County, NC, Cumberland County, NC, Durham County, NC, Edgecombe County, NC, Franklin County, NC, Granville County, NC, Guilford County, NC, Halifax County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Northampton County, NC, Orange County, NC, Person County, NC, Randolph County, NC, Richmond County, NC, Robeson County, NC, Scotland County, NC, Stanly County, NC, Union County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Wayne County, NC, Wilson County, NC, Chesterfield County, SC, Lancaster County, SC, Marlboro County, SC, Amelia County, VA, Appomattox County, VA, Brunswick County, VA, Buckingham County, VA, Campbell County, VA, Charles City County, VA, Charlotte County, VA, Chesterfield County, VA, City of Colonial Heights, VA, City of Danville, VA, City of Emporia, VA, City of Franklin, VA, City of Hopewell, VA, City of Petersburg, VA, City of Richmond, VA, Cumberland County, VA, Dinwiddie County, VA, Fluvanna County, VA, Goochland County, VA, Greensville County, VA, Halifax County, VA, Hanover County, VA, Henrico County, VA, James City County, VA, King William County, VA, Louisa County, VA, Lunenburg County, VA, Mecklenburg County, VA, Nelson County, VA, New Kent County, VA, Nottoway County, VA, Pittsylvania County, VA, Powhatan County, VA, Prince Edward County, VA, Prince George County, VA, Southampton County, VA, Surry County, VA, Sussex County, VA
The radar
The Raleigh/Durham radar (KRAX), 63 km from the middle of the area, began a volume at 22:35 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 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, 10.6 hours before the alert went out and 107 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
- 521 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 524 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 201 m²/s²
- 0-3 km storm-relative helicity
- 180 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.3
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 31, 11:12 AM EDT | Mesoscale Discussion | SPC | Alleghany, Ashe, Avery, Burke, Caldwell, Mitchell and 3 more | 2 hr |
| Oct 31, 12:45 PM EDT | Tornado Watch | SPC | Alleghany, Ashe, Watauga | 4 hr |
| Oct 31, 1:11 PM EDT | Mesoscale Discussion | SPC | Caswell, Forsyth, Guilford, Person, Rockingham, Stokes and 3 more | 3 hr |
| Oct 31, 3:16 PM EDT | Tornado Watch | SPC | Caswell, Northampton, Rockingham, Stokes, Surry, Wilkes and 1 more | 8 hr |
| Oct 31, 3:39 PM EDT | Tornado Watch | SPC | Alamance, Alexander, Anson, Burke, Cabarrus, Caldwell and 41 more | 7 hr |
| Oct 31, 4:01 PM EDT | Mesoscale Discussion | SPC | Caswell, Guilford, Rockingham | 119 min |
| Oct 31, 1:25 PM EDT | Mesoscale Discussion | SPC | Abbeville, Anderson, McCormick | 2 hr |
| Oct 31, 3:54 PM EDT | Severe Thunderstorm Watch | SPC | Aiken, Allendale, Bamberg, Barnwell, Edgefield, McCormick and 1 more | 5 hr |
| Oct 31, 6:34 PM EDT | Mesoscale Discussion | SPC | Allendale, Bamberg, Barnwell, Beaufort, Berkeley, Calhoun and 8 more | 56 min |
| Oct 31, 7:58 PM EDT | Mesoscale Discussion | SPC | Beaufort, Berkeley, Charleston, Clarendon, Colleton, Dorchester and 6 more | 62 min |
| Oct 31, 2:56 PM EDT | Tornado Watch | SPC | Albemarle, Arlington, Augusta, Clarke, Culpeper, Fairfax and 28 more | 10 hr |
| Oct 31, 7:14 PM EDT | Mesoscale Discussion | SPC | Arlington, Caroline, Clarke, Culpeper, Fairfax, Fauquier and 17 more | 2 hr |
Nearby
Mesoscale Discussions in Virginia, 2019Mesoscale Discussions in North Carolina, 2019Mesoscale Discussions in South Carolina, 2019Every mesoscale discussion in 2019
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.