Alert archive / North Carolina / Mesoscale Discussions in 2017
Mesoscale Discussion 625
The Storm Prediction Center issued this mesoscale discussion at May 1, 2017, 4:02 PM EDT for 19 counties in North Carolina; 14 counties in South Carolina. It was in force for 118 min.
The area
The outline as issued.
The facts
- Issued
- May 1, 2017, 4:02 PM EDT (20:02 UTC)
- Expired
- May 1, 2017, 6:00 PM EDT
- In force
- 118 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 33 counties
Alexander County, NC, Anson County, NC, Cabarrus County, NC, Catawba County, NC, Davidson County, NC, Davie County, NC, Forsyth County, NC, Gaston County, NC, Iredell County, NC, Lincoln County, NC, Mecklenburg County, NC, Montgomery County, NC, Rowan County, NC, Stanly County, NC, Stokes County, NC, Surry County, NC, Union County, NC, Wilkes County, NC, Yadkin County, NC, Aiken County, SC, Calhoun 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, Union County, SC, York County, SC
The radar
The Greer radar (KGSP), 128 km from the middle of the area, began a volume at 20:04 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, 8.0 hours before the alert went out and 127 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
- 76 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 679 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 129 m²/s²
- 0-3 km storm-relative helicity
- 163 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
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 1, 1:13 PM EDT | Mesoscale Discussion | SPC | Cleveland, Henderson, Polk, Rutherford, Transylvania | 92 min |
| May 1, 5:54 PM EDT | Severe Thunderstorm Watch | SPC | Alamance, Anson, Caswell, Chatham, Davidson, Durham and 19 more | 5 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.