Alert archive / Virginia / Mesoscale Discussions in 2022

Mesoscale Discussion 1949

November 11, 20225 counties in North Carolina; 41 counties in Virginia

The Storm Prediction Center issued this mesoscale discussion at Nov 11, 2022, 6:05 PM EST for 5 counties in North Carolina; 41 counties in Virginia. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued: Nov 11, 2022, 6:05 PM EST (23:05 UTC)
Expired: Nov 11, 2022, 7:30 PM EST
In force: 85 min
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch unlikely
Chance of a watch: 5%

All 46 counties

Halifax County, NC, Hertford County, NC, Northampton County, NC, Vance County, NC, Warren County, NC, Amelia County, VA, Brunswick County, VA, Buckingham County, VA, Caroline County, VA, Charles City County, VA, Charlotte County, VA, Chesterfield County, VA, City of Colonial Heights, VA, City of Emporia, VA, City of Franklin, VA, City of Fredericksburg, VA, City of Hopewell, VA, City of Petersburg, VA, City of Richmond, VA, City of Williamsburg, VA, Cumberland County, VA, Dinwiddie County, VA, Essex County, VA, Fluvanna County, VA, Goochland County, VA, Greensville County, VA, Hanover County, VA, Henrico County, VA, Isle of Wight County, VA, James City County, VA, King and Queen County, VA, King William County, VA, Louisa County, VA, Lunenburg County, VA, Mecklenburg County, VA, New Kent County, VA, Nottoway County, VA, Orange County, VA, Powhatan County, VA, Prince Edward County, VA, Prince George County, VA, Richmond County, VA, Southampton County, VA, Spotsylvania County, VA, Surry County, VA, Sussex County, VA

The radar

The Norfolk radar (KAKQ), 66 km from the middle of the area, began a volume at 23:06 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

Roanoke, VA (KRNK), launched 12:00Z, 11.1 hours before the alert went out and 158 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 520 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 419 m²/s²
0-3 km storm-relative helicity: 455 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 10, 10:43 PM EST	Mesoscale Discussion	SPC	Brunswick, Columbus, New Hanover, Pender	2 hr
Nov 11, 12:42 AM EST	Tornado Watch	SPC	Bladen, Brunswick, Columbus, New Hanover, Pender, Robeson	8 hr
Nov 11, 5:36 AM EST	Mesoscale Discussion	SPC	Alamance, Anson, Beaufort, Bertie, Bladen, Brunswick and 55 more	54 min
Nov 11, 6:15 AM EST	Tornado Watch	SPC	Alamance, Anson, Beaufort, Bertie, Bladen, Brunswick and 62 more	12 hr
Nov 11, 12:06 PM EST	Mesoscale Discussion	SPC	Bertie, Camden, Chowan, Currituck, Gates, Halifax and 8 more	114 min
Nov 11, 2:30 PM EST	Mesoscale Discussion	SPC	Gates, Hertford, Northampton	2 hr

Nearby

Mesoscale Discussions in Virginia, 2022 Mesoscale Discussions in North Carolina, 2022 Every mesoscale discussion in 2022

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.