Alert archive / South Carolina / Mesoscale Discussions in 2017
Mesoscale Discussion 456
The Storm Prediction Center issued this mesoscale discussion at Apr 6, 2017, 2:54 AM EDT for 10 counties in Georgia; 10 counties in North Carolina; 12 counties in South Carolina. It was in force for 96 min.
The area
The outline as issued.
The facts
- Issued
- Apr 6, 2017, 2:54 AM EDT (06:54 UTC)
- Expired
- Apr 6, 2017, 4:30 AM EDT
- In force
- 96 min
- Issued by
- the Storm Prediction Center
All 32 counties
Burke County, GA, Columbia County, GA, Dodge County, GA, Emanuel County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Laurens County, GA, Richmond County, GA, Treutlen County, GA, Alamance County, NC, Anson County, NC, Cabarrus County, NC, Davidson County, NC, Guilford County, NC, Montgomery County, NC, Randolph County, NC, Rockingham County, NC, Stanly County, NC, Union County, NC, Aiken County, SC, Barnwell County, SC, Chester County, SC, Chesterfield County, SC, Edgefield County, SC, Fairfield County, SC, Kershaw County, SC, Lancaster County, SC, Lexington County, SC, Newberry County, SC, Richland County, SC, Saluda County, SC
The radar
The Columbia radar (KCAE), 72 km from the middle of the area, began a volume at 06:55 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 00:00Z, 6.9 hours before the alert went out and 196 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1433 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 339 m²/s²
- 0-3 km storm-relative helicity
- 396 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 |
|---|---|---|---|---|
| Apr 5, 9:58 PM EDT | Tornado Watch | SPC | Bibb, Butts, Chattahoochee, Clayton, Coweta, Crawford and 27 more | 3 hr |
| Apr 5, 11:15 PM EDT | Mesoscale Discussion | SPC | Charlton, Echols | 2 hr |
| Apr 5, 11:34 PM EDT | Mesoscale Discussion | SPC | Elbert, Lincoln, Wilkes | 56 min |
| Apr 5, 11:50 PM EDT | Severe Thunderstorm Watch | SPC | Baldwin, Bleckley, Burke, Clarke, Columbia, Elbert and 24 more | 6 hr |
| Apr 6, 12:15 AM EDT | Tornado Watch | SPC | Brantley, Camden, Charlton, Clinch, Echols, Glynn and 1 more | 6 hr |
| Apr 6, 3:12 AM EDT | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Berrien, Brantley, Brooks and 12 more | 2 hr |
| Apr 6, 12:51 AM EDT | Mesoscale Discussion | SPC | Alamance, Anson, Caswell, Chatham, Davidson, Durham and 15 more | 114 min |
| Apr 6, 5:59 AM EDT | Mesoscale Discussion | SPC | Alamance, Bertie, Camden, Caswell, Chatham, Chowan and 32 more | 91 min |
| Apr 6, 7:06 AM EDT | Tornado Watch | SPC | Alamance, Bertie, Camden, Chatham, Chowan, Cumberland and 31 more | 8 hr |
| Apr 6, 10:38 AM EDT | Mesoscale Discussion | SPC | Bertie, Chowan, Edgecombe, Gates, Greene, Halifax and 8 more | 67 min |
Nearby
Mesoscale Discussions in South Carolina, 2017Mesoscale Discussions in Georgia, 2017Mesoscale Discussions in North 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.