Alert archive / North Carolina / Mesoscale Discussions in 2017
Mesoscale Discussion 250
The Storm Prediction Center issued this mesoscale discussion at Mar 1, 2017, 6:21 PM EST for 46 counties in North Carolina; 20 counties in South Carolina. It was in force for 114 min.
The area
The outline as issued.
The facts
- Issued
- Mar 1, 2017, 6:21 PM EST (23:21 UTC)
- Expired
- Mar 1, 2017, 8:15 PM EST
- In force
- 114 min
- Issued by
- the Storm Prediction Center
All 66 counties
Alamance County, NC, Anson County, NC, Beaufort County, NC, Bertie County, NC, Bladen County, NC, Cabarrus County, NC, Chatham County, NC, Cleveland County, NC, Columbus County, NC, Craven County, NC, Cumberland County, NC, Davidson County, NC, Duplin County, NC, Durham County, NC, Edgecombe County, NC, Franklin County, NC, Gaston County, NC, Greene County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Jones County, NC, Lee County, NC, Lenoir County, NC, Lincoln County, NC, Martin County, NC, Mecklenburg County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Onslow County, NC, Orange County, NC, Pender County, NC, Pitt County, NC, Randolph County, NC, Richmond County, NC, Robeson County, NC, Rowan County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Union County, NC, Wake County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC, Anderson County, SC, Cherokee County, SC, Chester County, SC, Chesterfield County, SC, Darlington County, SC, Dillon County, SC, Fairfield County, SC, Greenville County, SC, Kershaw County, SC, Lancaster County, SC, Laurens County, SC, Lee County, SC, Marion County, SC, Marlboro County, SC, Newberry County, SC, Oconee County, SC, Pickens County, SC, Spartanburg County, SC, Union County, SC, York County, SC
The radar
The Raleigh/Durham radar (KRAX), 99 km from the middle of the area, began a volume at 23:21 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
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.4 hours before the alert went out and 112 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
- 27 J/kg
- Mixed-layer CIN
- -165 J/kg
- Mixed-layer LCL
- 878 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 312 m²/s²
- 0-3 km storm-relative helicity
- 375 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 |
|---|---|---|---|---|
| Mar 1, 9:44 AM EST | Mesoscale Discussion | SPC | Alamance, Alleghany, Ashe, Caswell, Forsyth, Granville and 8 more | 91 min |
| Mar 1, 10:38 AM EST | Severe Thunderstorm Watch | SPC | Alleghany, Ashe, Caswell, Rockingham, Stokes, Surry and 3 more | 4 hr |
| Mar 1, 12:25 PM EST | Mesoscale Discussion | SPC | Alleghany, Rockingham, Stokes, Surry | 65 min |
| Mar 1, 12:48 PM EST | Tornado Watch | SPC | Cherokee, Clay | 6 hr |
| Mar 1, 12:50 PM EST | Mesoscale Discussion | SPC | Gates, Granville, Halifax, Hertford, Northampton, Vance and 1 more | 55 min |
| Mar 1, 2:07 PM EST | Mesoscale Discussion | SPC | Alexander, Buncombe, Burke, Cabarrus, Catawba, Cleveland and 16 more | 113 min |
| Mar 1, 3:02 PM EST | Severe Thunderstorm Watch | SPC | Alamance, Alexander, Anson, Avery, Buncombe, Burke and 43 more | 7 hr |
Nearby
Mesoscale Discussions in North Carolina, 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.