Alert archive / South Carolina / Severe Thunderstorm Watches in 2012
Severe Thunderstorm Watch 110
The Storm Prediction Center issued this severe thunderstorm watch at Mar 24, 2012, 8:43 PM EDT for 6 counties in Georgia; Bladen County, Columbus County, Robeson County, North Carolina; 28 counties in South Carolina. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 24, 2012, 8:43 PM EDT (00:43 UTC)
- Expired
- Mar 25, 2012, 1:29 AM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 37 counties
Bulloch County, GA, Burke County, GA, Candler County, GA, Effingham County, GA, Jenkins County, GA, Screven County, GA, Bladen County, NC, Columbus County, NC, Robeson County, NC, Aiken County, SC, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Beaufort County, SC, Berkeley County, SC, Calhoun County, SC, Charleston County, SC, Chesterfield County, SC, Clarendon County, SC, Colleton County, SC, Darlington County, SC, Dillon County, SC, Dorchester County, SC, Florence County, SC, Georgetown County, SC, Hampton County, SC, Horry County, SC, Jasper County, SC, Kershaw 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), 117 km from the middle of the area, began a volume at 00:43 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 20%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 5%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 24, 8:51 PM EDT | Tornado Warning | CAE | Bamberg, Orangeburg | 39 min |
| Mar 24, 9:07 PM EDT | Flash Flood Warning | CAE | Lexington, Richland | 53 min |
| Mar 24, 9:24 PM EDT | Severe Thunderstorm Warning | CAE | Orangeburg | 66 min |
| Mar 24, 9:37 PM EDT | Severe Thunderstorm Warning | CHS | Bulloch, Candler, Effingham, Evans, Screven | 53 min |
| Mar 24, 9:39 PM EDT | Severe Thunderstorm Warning | CAE | Bamberg, Barnwell | 51 min |
| Mar 24, 10:03 PM EDT | Severe Thunderstorm Warning | CHS | Effingham, Screven | 57 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 00:00Z, 0.7 hours before the alert went out and 102 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
- 218 J/kg
- Mixed-layer CIN
- -86 J/kg
- Mixed-layer LCL
- 911 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 205 m²/s²
- 0-3 km storm-relative helicity
- 213 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 24, 10:20 PM EDT | Mesoscale Discussion | SPC | Bulloch, Burke, Candler, Effingham, Jenkins, Screven | 115 min |
| Mar 25, 12:33 AM EDT | Mesoscale Discussion | SPC | Brantley, Bryan, Camden, Charlton, Chatham, Effingham and 7 more | 57 min |
| Mar 24, 10:23 PM EDT | Mesoscale Discussion | SPC | Bertie, Edgecombe, Franklin, Greene, Halifax, Hertford and 8 more | 97 min |
| Mar 25, 12:31 PM EDT | Mesoscale Discussion | SPC | Beaufort, Bertie, Bladen, Brunswick, Carteret, Chowan and 26 more | 2 hr |
| Mar 25, 5:56 PM EDT | Mesoscale Discussion | SPC | Bladen, Brunswick, Carteret, Columbus, Craven, Dare and 7 more | 94 min |
Nearby
Severe Thunderstorm Watches in South Carolina, 2012Severe Thunderstorm Watches in Georgia, 2012Severe Thunderstorm Watches in North Carolina, 2012Every severe thunderstorm watch 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.