Alert archive / North Carolina / Mesoscale Discussions in 2023
Mesoscale Discussion 2001
The Storm Prediction Center issued this mesoscale discussion at Aug 15, 2023, 3:56 PM EDT for 51 counties in North Carolina; Chesterfield County, York County, South Carolina; 8 counties in Virginia. It was in force for 94 min.
The area
The outline as issued.
The facts
- Issued
- Aug 15, 2023, 3:56 PM EDT (19:56 UTC)
- Expired
- Aug 15, 2023, 5:30 PM EDT
- In force
- 94 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 649...650
All 61 counties
Alamance County, NC, Anson County, NC, Beaufort County, NC, Bertie County, NC, Cabarrus County, NC, Camden County, NC, Chatham County, NC, Chowan County, NC, Craven County, NC, Cumberland County, NC, Currituck County, NC, Davidson County, NC, Durham County, NC, Edgecombe County, NC, Franklin County, NC, Gates County, NC, Granville County, NC, Greene County, NC, Guilford County, NC, Halifax County, NC, Harnett County, NC, Hertford County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Lenoir County, NC, Martin County, NC, Mecklenburg County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Northampton County, NC, Orange County, NC, Pasquotank County, NC, Perquimans County, NC, Person County, NC, Pitt County, NC, Randolph County, NC, Richmond County, NC, Rowan County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Tyrrell County, NC, Union County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC, Chesterfield County, SC, York County, SC, City of Chesapeake, VA, City of Emporia, VA, City of Franklin, VA, City of Portsmouth, VA, City of Suffolk, VA, City of Virginia Beach, VA, Greensville County, VA, Southampton County, VA
The radar
The Raleigh/Durham radar (KRAX), 12 km from the middle of the area, began a volume at 20:00 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, 7.9 hours before the alert went out and 125 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
- 832 J/kg
- Mixed-layer CIN
- -139 J/kg
- Mixed-layer LCL
- 1002 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- -9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 |
|---|---|---|---|---|
| Aug 14, 8:33 PM EDT | Severe Thunderstorm Watch | SPC | Avery, Buncombe, Cherokee, Clay, Graham, Haywood and 6 more | 6 hr |
| Aug 14, 10:24 PM EDT | Mesoscale Discussion | SPC | Alexander, Burke, Cabarrus, Caldwell, Caswell, Catawba and 15 more | 3 hr |
| Aug 14, 10:56 PM EDT | Severe Thunderstorm Watch | SPC | Alleghany, Ashe, Stokes, Surry, Watauga, Wilkes and 1 more | 5 hr |
| Aug 15, 12:01 AM EDT | Mesoscale Discussion | SPC | Avery, Cherokee, Graham, Haywood, Madison, Mitchell and 2 more | 119 min |
| Aug 15, 1:28 PM EDT | Mesoscale Discussion | SPC | Alamance, Alexander, Cabarrus, Caswell, Catawba, Chatham and 31 more | 3 hr |
| Aug 15, 1:48 PM EDT | Severe Thunderstorm Watch | SPC | Alamance, Alexander, Anson, Cabarrus, Caswell, Catawba and 40 more | 7 hr |
| Aug 15, 2:08 PM EDT | Severe Thunderstorm Watch | SPC | Bertie, Camden, Chowan, Currituck, Gates, Hertford and 3 more | 6 hr |
| Aug 15, 5:45 PM EDT | Severe Thunderstorm Watch | SPC | Beaufort, Bladen, Carteret, Columbus, Craven, Dare and 13 more | 3 hr |
| Aug 15, 1:50 PM EDT | Mesoscale Discussion | SPC | Abbeville, Aiken, Anderson, Cherokee, Chester, Edgefield and 15 more | 85 min |
Nearby
Mesoscale Discussions in North Carolina, 2023Mesoscale Discussions in Virginia, 2023Mesoscale Discussions in South Carolina, 2023Every mesoscale discussion in 2023
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.