Alert archive / South Carolina / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 720
The Storm Prediction Center issued this severe thunderstorm watch at Jul 11, 2003, 1:55 PM EDT for 32 counties in Georgia; Anson County, Scotland County, Union County, North Carolina; 42 counties in South Carolina. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 11, 2003, 1:55 PM EDT (17:55 UTC)
- Expired
- Jul 11, 2003, 8:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 77 counties
Baldwin County, GA, Banks County, GA, Burke County, GA, Clarke County, GA, Columbia 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, Jones County, GA, Lincoln County, GA, Madison County, GA, McDuffie County, GA, Morgan County, GA, Oconee County, GA, Oglethorpe County, GA, Putnam County, GA, Rabun County, GA, Richmond County, GA, Screven County, GA, Stephens County, GA, Taliaferro County, GA, Warren County, GA, Washington County, GA, Wilkes County, GA, Wilkinson County, GA, Anson County, NC, Scotland County, NC, Union County, NC, Abbeville County, SC, Aiken County, SC, Allendale County, SC, Anderson County, SC, Bamberg County, SC, Barnwell 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, Greenville County, SC, Greenwood County, SC, Hampton County, SC, Kershaw County, SC, Lancaster County, SC, Laurens County, SC, Lee County, SC, Lexington County, SC, Marion County, SC, Marlboro 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), 70 km from the middle of the area, began a volume at 17:56 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
13 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 3:30 PM EDT | Severe Thunderstorm Warning | CAE | Columbia, Richmond | 30 min |
| Jul 11, 4:14 PM EDT | Severe Thunderstorm Warning | CAE | Aiken | 31 min |
| Jul 11, 4:54 PM EDT | Severe Thunderstorm Warning | CAE | Barnwell | 36 min |
| Jul 11, 4:56 PM EDT | Severe Thunderstorm Warning | CAE | Lexington, Richland | 34 min |
| Jul 11, 6:06 PM EDT | Severe Thunderstorm Warning | CAE | Bamberg | 24 min |
| Jul 11, 6:09 PM EDT | Severe Thunderstorm Warning | CAE | Calhoun | 36 min |
| Jul 11, 6:27 PM EDT | Severe Thunderstorm Warning | CAE | Orangeburg | 33 min |
| Jul 11, 6:46 PM EDT | Severe Thunderstorm Warning | CAE | Lee, Sumter | 29 min |
| Jul 11, 6:58 PM EDT | Flash Flood Warning | GSP | Mecklenburg, Union | 3 hr |
| Jul 11, 7:04 PM EDT | Severe Thunderstorm Warning | ILM | Florence | 56 min |
| Jul 11, 7:39 PM EDT | Severe Thunderstorm Warning | ILM | Dillon, Marion | 66 min |
| Jul 11, 7:44 PM EDT | Severe Thunderstorm Warning | CHS | Berkeley | 46 min |
| Jul 11, 7:52 PM EDT | Severe Thunderstorm Warning | ILM | Williamsburg | 53 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, 5.9 hours before the alert went out and 217 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
- 2504 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 528 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 27 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 |
|---|---|---|---|---|
| Jul 11, 4:49 PM EDT | Mesoscale Discussion | SPC | Burke, Jefferson, Jenkins, Richmond | 116 min |
| Jul 10, 9:29 PM EDT | Mesoscale Discussion | SPC | Alleghany, Ashe, Avery, Buncombe, Haywood, Jackson and 5 more | 31 min |
| Jul 11, 12:45 PM EDT | Mesoscale Discussion | SPC | Anson, Beaufort, Bertie, Bladen, Camden, Chatham and 41 more | 2 hr |
| Jul 11, 4:10 PM EDT | Severe Thunderstorm Watch | SPC | Alamance, Anson, Bertie, Cabarrus, Camden, Caswell and 44 more | 4 hr |
| Jul 11, 6:34 PM EDT | Mesoscale Discussion | SPC | Beaufort, Bertie, Bladen, Brunswick, Camden, Carteret and 42 more | 86 min |
| Jul 11, 7:05 PM EDT | Severe Thunderstorm Watch | SPC | Beaufort, Bertie, Bladen, Brunswick, Camden, Chowan and 22 more | 6 hr |
Nearby
Severe Thunderstorm Watches in South Carolina, 2003Severe Thunderstorm Watches in Georgia, 2003Severe Thunderstorm Watches in North Carolina, 2003Every severe thunderstorm watch in 2003
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.