Alert archive / South Carolina / Tornado Watches in 2004
Tornado Watch 743
The Storm Prediction Center issued this tornado watch at Aug 12, 2004, 11:45 AM EDT for 31 counties in Georgia; 18 counties in North Carolina; 36 counties in South Carolina. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 12, 2004, 11:45 AM EDT (15:45 UTC)
- Expired
- Aug 12, 2004, 6:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 85 counties
Bleckley County, GA, Bryan County, GA, Bulloch County, GA, Burke County, GA, Candler County, GA, Chatham County, GA, Columbia County, GA, Crisp County, GA, Dodge County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Glascock County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Laurens County, GA, McDuffie County, GA, Montgomery County, GA, Pulaski County, GA, Richmond County, GA, Screven County, GA, Tattnall County, GA, Telfair County, GA, Toombs County, GA, Treutlen County, GA, Warren County, GA, Washington County, GA, Wheeler County, GA, Wilcox County, GA, Wilkinson County, GA, Anson County, NC, Bladen County, NC, Brunswick County, NC, Columbus County, NC, Craven County, NC, Cumberland County, NC, Duplin County, NC, Hoke County, NC, Jones County, NC, Lenoir County, NC, Mecklenburg County, NC, Onslow County, NC, Pender County, NC, Richmond County, NC, Robeson County, NC, Sampson County, NC, Scotland County, NC, Union 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, Chester County, SC, Chesterfield County, SC, Clarendon County, SC, Colleton County, SC, Darlington County, SC, Dillon County, SC, Dorchester County, SC, Edgefield County, SC, Fairfield County, SC, Florence County, SC, Georgetown County, SC, Hampton County, SC, Horry County, SC, Jasper County, SC, Kershaw County, SC, Lancaster County, SC, Lee County, SC, Lexington County, SC, Marion County, SC, Marlboro County, SC, Newberry County, SC, Orangeburg County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC, Union County, SC, Williamsburg County, SC, York County, SC
The radar
The Charleston,SC radar (KCLX), 67 km from the middle of the area, began a volume at 15:45 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.
Warnings issued inside it
21 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 11:59 AM EDT | Tornado Warning | CAE | Fairfield, Richland | 46 min |
| Aug 12, 12:07 PM EDT | Tornado Warning | CHS | Berkeley | 23 min |
| Aug 12, 12:38 PM EDT | Severe Thunderstorm Warning | CHS | Berkeley, Dorchester | 37 min |
| Aug 12, 12:45 PM EDT | Severe Thunderstorm Warning | CAE | Kershaw | 30 min |
| Aug 12, 12:49 PM EDT | Severe Thunderstorm Warning | CAE | Richland | 41 min |
| Aug 12, 1:00 PM EDT | Severe Thunderstorm Warning | CHS | Colleton | 30 min |
| Aug 12, 1:03 PM EDT | Severe Thunderstorm Warning | ILM | Williamsburg | 57 min |
| Aug 12, 1:11 PM EDT | Tornado Warning | CAE | Chesterfield | 49 min |
| Aug 12, 1:30 PM EDT | Severe Thunderstorm Warning | CHS | Colleton, Dorchester | 45 min |
| Aug 12, 1:41 PM EDT | Severe Thunderstorm Warning | ILM | Dillon | 49 min |
| Aug 12, 1:52 PM EDT | Severe Thunderstorm Warning | ILM | Horry | 53 min |
| Aug 12, 2:01 PM EDT | Tornado Warning | ILM | Marlboro | 29 min |
| Aug 12, 2:02 PM EDT | Tornado Warning | ILM | Horry | 28 min |
| Aug 12, 2:04 PM EDT | Severe Thunderstorm Warning | CHS | Berkeley | 41 min |
| Aug 12, 2:06 PM EDT | Tornado Warning | RAH | Richmond | 39 min |
| Aug 12, 2:07 PM EDT | Tornado Warning | ILM | Robeson | 53 min |
| Aug 12, 2:27 PM EDT | Tornado Warning | RAH | Scotland | 33 min |
| Aug 12, 2:32 PM EDT | Tornado Warning | ILM | Columbus | 43 min |
| Aug 12, 3:19 PM EDT | Severe Thunderstorm Warning | ILM | Columbus | 41 min |
| Aug 12, 4:36 PM EDT | Tornado Warning | MHX | Duplin | 39 min |
| Aug 12, 5:06 PM EDT | Severe Thunderstorm Warning | MHX | Onslow | 24 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 12:00Z, 3.8 hours before the alert went out and 116 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
- 3311 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 489 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 117 m²/s²
- 0-3 km storm-relative helicity
- 129 m²/s²
- Significant tornado parameter
- 1.7
- Supercell composite
- 10.5
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 4:09 AM EDT | Mesoscale Discussion | SPC | Barrow, Bartow, Carroll, Cherokee, Clayton, Cobb and 14 more | 3 hr |
| Aug 12, 8:00 AM EDT | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 32 more | 3 hr |
| Aug 12, 8:50 AM EDT | Tornado Watch | SPC | Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 38 more | 5 hr |
| Aug 12, 10:02 AM EDT | Mesoscale Discussion | SPC | Bleckley, Bulloch, Burke, Candler, Columbia, Effingham and 13 more | 88 min |
| Aug 12, 12:50 PM EDT | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 30 more | 55 min |
| Aug 12, 1:50 PM EDT | Tornado Watch | SPC | Appling, Atkinson, Bacon, Ben Hill, Berrien, Brantley and 19 more | 7 hr |
| Aug 12, 4:06 PM EDT | Mesoscale Discussion | SPC | Bryan, Bulloch, Candler, Chatham, Effingham, Evans and 6 more | 84 min |
| Aug 12, 7:02 PM EDT | Mesoscale Discussion | SPC | Brantley, Camden, Glynn, McIntosh, Wayne | 88 min |
| Aug 12, 1:34 PM EDT | Mesoscale Discussion | SPC | Alamance, Beaufort, Bertie, Camden, Caswell, Chatham and 28 more | 86 min |
| Aug 12, 2:25 PM EDT | Tornado Watch | SPC | Alamance, Beaufort, Bertie, Cabarrus, Camden, Caswell and 39 more | 6 hr |
| Aug 12, 5:55 PM EDT | Mesoscale Discussion | SPC | Brunswick, Carteret, New Hanover, Onslow, Pender | 65 min |
| Aug 12, 6:47 PM EDT | Mesoscale Discussion | SPC | Beaufort, Bertie, Camden, Chowan, Currituck, Gates and 7 more | 58 min |
Nearby
Tornado Watches in South Carolina, 2004Tornado Watches in Georgia, 2004Tornado Watches in North Carolina, 2004Every tornado watch in 2004
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.