Alert archive / North Carolina / Mesoscale Discussions in 2017
Mesoscale Discussion 832
The Storm Prediction Center issued this mesoscale discussion at May 24, 2017, 3:13 PM EDT for 43 counties in North Carolina; 8 counties in South Carolina; 9 counties in Virginia. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 24, 2017, 3:13 PM EDT (19:13 UTC)
- Expired
- May 24, 2017, 5:15 PM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 60 counties
Alamance County, NC, Alleghany County, NC, Bladen County, NC, Brunswick County, NC, Caswell County, NC, Chatham County, NC, Columbus County, NC, Cumberland County, NC, Duplin County, NC, Durham County, NC, Edgecombe County, NC, Forsyth County, NC, Franklin County, NC, Granville County, NC, Greene County, NC, Guilford County, NC, Halifax County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Lenoir County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Orange County, NC, Pender County, NC, Person County, NC, Randolph County, NC, Richmond County, NC, Robeson County, NC, Rockingham County, NC, Sampson County, NC, Scotland County, NC, Stokes County, NC, Surry County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Wayne County, NC, Wilkes County, NC, Wilson County, NC, Yadkin County, NC, Darlington County, SC, Dillon County, SC, Florence County, SC, Georgetown County, SC, Horry County, SC, Marion County, SC, Marlboro County, SC, Williamsburg County, SC, Carroll County, VA, City of Danville, VA, City of Galax, VA, City of Martinsville, VA, Floyd County, VA, Halifax County, VA, Henry County, VA, Patrick County, VA, Pittsylvania County, VA
The radar
The Raleigh/Durham radar (KRAX), 85 km from the middle of the area, began a volume at 19:15 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, 7.2 hours before the alert went out and 93 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
- 52 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 553 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 105 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| May 24, 7:41 AM EDT | Mesoscale Discussion | SPC | Cherokee, Graham | 3 hr |
| May 24, 10:04 AM EDT | Tornado Watch | SPC | Alexander, Avery, Buncombe, Burke, Cabarrus, Caldwell and 24 more | 11 hr |
| May 24, 1:19 PM EDT | Tornado Watch | SPC | Cherokee | 7 hr |
| May 24, 3:02 PM EDT | Mesoscale Discussion | SPC | Alexander, Buncombe, Burke, Cabarrus, Caldwell, Catawba and 21 more | 88 min |
| May 24, 3:46 PM EDT | Tornado Watch | SPC | Alamance, Alleghany, Anson, Ashe, Beaufort, Bladen and 52 more | 6 hr |
| May 24, 3:50 PM EDT | Mesoscale Discussion | SPC | Cherokee, Graham, Swain | 55 min |
| May 24, 5:25 PM EDT | Mesoscale Discussion | SPC | Alexander, Buncombe, Burke, Cabarrus, Caldwell, Catawba and 16 more | 65 min |
| May 24, 6:59 PM EDT | Mesoscale Discussion | SPC | Bertie, Camden, Chowan, Currituck, Edgecombe, Franklin and 15 more | 91 min |
| May 23, 8:46 PM EDT | Mesoscale Discussion | SPC | Allendale, Bamberg, Beaufort, Colleton, Dorchester, Hampton and 1 more | 89 min |
| May 24, 8:29 AM EDT | Mesoscale Discussion | SPC | Aiken, Allendale, Bamberg, Barnwell, Beaufort, Berkeley and 11 more | 3 hr |
| May 24, 11:03 AM EDT | Tornado Watch | SPC | Aiken, Allendale, Bamberg, Barnwell, Beaufort, Berkeley and 16 more | 10 hr |
| May 24, 2:10 PM EDT | Mesoscale Discussion | SPC | Aiken, Allendale, Bamberg, Barnwell, Beaufort, Berkeley and 20 more | 95 min |
| May 24, 6:51 PM EDT | Mesoscale Discussion | SPC | Dickenson, Scott, Wise, City of Bristol, City of Norton | 24 min |
Nearby
Mesoscale Discussions in North Carolina, 2017Mesoscale Discussions in Virginia, 2017Mesoscale Discussions in South Carolina, 2017Every mesoscale discussion in 2017
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.