Alert archive / South Carolina / Mesoscale Discussions in 2012
Mesoscale Discussion 354
The Storm Prediction Center issued this mesoscale discussion at Mar 24, 2012, 7:21 PM EDT for 23 counties in South Carolina. It was in force for 84 min.
The area
The outline as issued.
The facts
- Issued
- Mar 24, 2012, 7:21 PM EDT (23:21 UTC)
- Expired
- Mar 24, 2012, 8:45 PM EDT
- In force
- 84 min
- Issued by
- the Storm Prediction Center
All 23 counties
Aiken County, SC, Bamberg County, SC, Barnwell County, SC, Berkeley County, SC, Calhoun County, SC, Charleston County, SC, Chesterfield County, SC, Clarendon County, SC, Darlington County, SC, Dorchester County, SC, Fairfield County, SC, Florence County, SC, Georgetown County, SC, Kershaw County, SC, Lancaster County, SC, Lee County, SC, Lexington County, SC, Marion County, SC, Marlboro County, SC, Orangeburg County, SC, Richland County, SC, Sumter County, SC, Williamsburg County, SC
The radar
The Columbia radar (KCAE), 71 km from the middle of the area, began a volume at 23:24 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
Charleston AFB, SC (KCHS), launched 12:00Z, 11.4 hours before the alert went out and 88 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
- 588 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 734 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 24, 12:03 PM EDT | Mesoscale Discussion | SPC | Cherokee, Chester, Chesterfield, Edgefield, Fairfield, Greenwood and 9 more | 117 min |
| Mar 24, 12:29 PM EDT | Mesoscale Discussion | SPC | Beaufort, Colleton, Hampton, Jasper | 61 min |
| Mar 24, 1:53 PM EDT | Severe Thunderstorm Watch | SPC | Aiken, Allendale, Bamberg, Barnwell, Beaufort, Berkeley and 32 more | 7 hr |
| Mar 24, 4:16 PM EDT | Mesoscale Discussion | SPC | Aiken, Chester, Edgefield, Fairfield, Kershaw, Lancaster and 5 more | 59 min |
Nearby
Mesoscale Discussions in South Carolina, 2012Every mesoscale discussion in 2012
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.