Alert archive / South Carolina / Mesoscale Discussions in 2020
Mesoscale Discussion 986
The Storm Prediction Center issued this mesoscale discussion at Jun 24, 2020, 2:47 PM EDT for 9 counties in Georgia; 21 counties in South Carolina. It was in force for 118 min.
The area
The outline as issued.
The facts
- Issued
- Jun 24, 2020, 2:47 PM EDT (18:47 UTC)
- Expired
- Jun 24, 2020, 4:45 PM EDT
- In force
- 118 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch possible
- Chance of a watch
- 40%
All 30 counties
Banks County, GA, Elbert County, GA, Franklin County, GA, Habersham County, GA, Hart County, GA, Lincoln County, GA, Madison County, GA, Stephens County, GA, White County, GA, Abbeville County, SC, Aiken County, SC, Anderson County, SC, Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Clarendon County, SC, Dorchester County, SC, Edgefield County, SC, Fairfield County, SC, Greenwood County, SC, Laurens County, SC, Lexington County, SC, McCormick County, SC, Newberry County, SC, Oconee County, SC, Orangeburg County, SC, Pickens County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC
The radar
The Columbia radar (KCAE), 86 km from the middle of the area, began a volume at 18:51 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
Charleston AFB, SC (KCHS), launched 12:00Z, 6.8 hours before the alert went out and 223 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
- 483 J/kg
- Mixed-layer CIN
- -83 J/kg
- Mixed-layer LCL
- 940 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 57 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 |
|---|---|---|---|---|
| Jun 24, 2:36 PM EDT | Severe Thunderstorm Watch | SPC | Baker, Berrien, Bibb, Brooks, Calhoun, Chattahoochee and 40 more | 7 hr |
| Jun 24, 6:27 PM EDT | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Baker, Baldwin, Ben Hill and 99 more | 93 min |
Nearby
Mesoscale Discussions in South Carolina, 2020Mesoscale Discussions in Georgia, 2020Every mesoscale discussion in 2020
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.