Alert archive / South Carolina / Mesoscale Discussions in 2012
Mesoscale Discussion 456
The Storm Prediction Center issued this mesoscale discussion at Apr 5, 2012, 1:03 PM EDT for 30 counties in Georgia; 16 counties in North Carolina; 43 counties in South Carolina. It was in force for 87 min.
The area
The outline as issued.
The facts
- Issued
- Apr 5, 2012, 1:03 PM EDT (17:03 UTC)
- Expired
- Apr 5, 2012, 2:30 PM EDT
- In force
- 87 min
- Issued by
- the Storm Prediction Center
All 89 counties
Banks County, GA, Burke County, GA, Clarke County, GA, Columbia County, GA, Effingham County, GA, Elbert County, GA, Franklin County, GA, Glascock County, GA, Greene County, GA, Habersham County, GA, Hancock County, GA, Hart County, GA, Jackson County, GA, Jefferson County, GA, Jenkins County, GA, Lincoln County, GA, Madison County, GA, McDuffie County, GA, Oconee County, GA, Oglethorpe County, GA, Rabun County, GA, Richmond County, GA, Screven County, GA, Stephens County, GA, Taliaferro County, GA, Towns County, GA, Union County, GA, Warren County, GA, White County, GA, Wilkes County, GA, Buncombe County, NC, Clay County, NC, Cleveland County, NC, Gaston County, NC, Haywood County, NC, Henderson County, NC, Jackson County, NC, Lincoln County, NC, Macon County, NC, McDowell County, NC, Mecklenburg County, NC, Polk County, NC, Rutherford County, NC, Swain County, NC, Transylvania County, NC, Union County, NC, Abbeville County, SC, Aiken County, SC, Allendale County, SC, Anderson County, SC, Bamberg County, SC, Barnwell County, SC, Beaufort County, SC, Berkeley County, SC, Calhoun County, SC, Charleston County, SC, Cherokee County, SC, Chester County, SC, Chesterfield County, SC, Clarendon County, SC, Colleton County, SC, Darlington County, SC, Dorchester County, SC, Edgefield County, SC, Fairfield County, SC, Florence County, SC, Georgetown County, SC, Greenville County, SC, Greenwood County, SC, Hampton County, SC, Jasper County, SC, Kershaw County, SC, Lancaster County, SC, Laurens County, SC, Lee County, SC, Lexington County, SC, Marion County, SC, McCormick County, SC, Newberry County, SC, Oconee County, SC, Orangeburg County, SC, Pickens County, SC, Richland County, SC, Saluda County, SC, Spartanburg County, SC, Sumter County, SC, Union County, SC, Williamsburg County, SC, York County, SC
The radar
The Columbia radar (KCAE), 49 km from the middle of the area, began a volume at 17:05 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, 5.1 hours before the alert went out and 198 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
- 490 J/kg
- Mixed-layer CIN
- -94 J/kg
- Mixed-layer LCL
- 1016 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Apr 5, 1:47 PM EDT | Severe Thunderstorm Watch | SPC | Bryan, Bulloch, Burke, Candler, Chatham, Columbia and 17 more | 7 hr |
| Apr 5, 1:54 PM EDT | Mesoscale Discussion | SPC | Bartow, Catoosa, Chattooga, Cherokee, Dade, Dawson and 11 more | 96 min |
| Apr 5, 2:12 PM EDT | Mesoscale Discussion | SPC | Baker, Calhoun, Chattahoochee, Clay, Coweta, Crawford and 30 more | 93 min |
| Apr 5, 2:58 PM EDT | Severe Thunderstorm Watch | SPC | Baker, Ben Hill, Calhoun, Chattahoochee, Clay, Colquitt and 36 more | 6 hr |
| Apr 5, 3:37 PM EDT | Mesoscale Discussion | SPC | Burke, Chatham, Columbia, Effingham, Elbert, Franklin and 11 more | 53 min |
| Apr 5, 4:49 PM EDT | Mesoscale Discussion | SPC | Atkinson, Baker, Ben Hill, Berrien, Brooks, Calhoun and 33 more | 86 min |
| Apr 5, 6:35 PM EDT | Mesoscale Discussion | SPC | Bryan, Bulloch, Burke, Candler, Chatham, Columbia and 12 more | 85 min |
| Apr 5, 7:15 PM EDT | Mesoscale Discussion | SPC | Heard | 45 min |
| Apr 5, 2:21 PM EDT | Severe Thunderstorm Watch | SPC | Cherokee, Clay | 8 hr |
| Apr 5, 4:06 PM EDT | Mesoscale Discussion | SPC | Cherokee, Clay | 54 min |
Nearby
Mesoscale Discussions in South Carolina, 2012Mesoscale Discussions in Georgia, 2012Mesoscale Discussions in North 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.