Alert archive / South Carolina / Mesoscale Discussions in 2004
Mesoscale Discussion 2183
The Storm Prediction Center issued this mesoscale discussion at Sep 7, 2004, 11:29 AM EDT for 34 counties in Georgia; Columbus County, Robeson County, North Carolina; 45 counties in South Carolina. It was in force for 91 min.
The area
The outline as issued.
The facts
- Issued
- Sep 7, 2004, 11:29 AM EDT (15:29 UTC)
- Expired
- Sep 7, 2004, 1:00 PM EDT
- In force
- 91 min
- Issued by
- the Storm Prediction Center
All 81 counties
Bryan County, GA, Bulloch County, GA, Burke County, GA, Candler County, GA, Columbia County, GA, Effingham County, GA, Elbert County, GA, Emanuel County, GA, Evans County, GA, Franklin County, GA, Glascock County, GA, Greene County, GA, Hancock County, GA, Hart County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Laurens County, GA, Lincoln County, GA, Madison County, GA, McDuffie County, GA, Montgomery County, GA, Oglethorpe County, GA, Richmond County, GA, Screven County, GA, Stephens County, GA, Taliaferro County, GA, Tattnall County, GA, Toombs County, GA, Treutlen County, GA, Warren County, GA, Washington County, GA, Wheeler County, GA, Wilkes County, GA, Columbus County, NC, Robeson 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, 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, Horry County, SC, Jasper 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), 19 km from the middle of the area, began a volume at 15:32 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, 3.5 hours before the alert went out and 166 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
- 2597 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 466 m above ground
- 0-6 km bulk shear
- 0 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
449 ACUS11 KWNS 071532 SWOMCD SPC MCD 071529 NCZ000-SCZ000-GAZ000-071700- MESOSCALE DISCUSSION 2183 NWS STORM PREDICTION CENTER NORMAN OK 1029 AM CDT TUE SEP 07 2004 AREAS AFFECTED...SC / ERN GA / NC CONCERNING...TORNADO WATCH 808... VALID 071529Z - 071700Z TORNADO THREAT CONTINUES....PARTICULARLY ACROSS THE ERN 2/3 OF SC. NEW TORNADO WATCH WILL BE ISSUED WITHIN THE NEXT HOUR REPLACING WW 808...WHICH WILL EXTEND SLIGHTLY FURTHER NWD INTO SRN NC. LATEST RADAR IMAGERY SHOWS FRANCES DRIFTING VERY SLOWLY NNEWD ACROSS SWRN GA. ALTHOUGH A LIMITED TORNADO THREAT WILL CONTINUE ACROSS N FL -- PRIMARILY WITHIN MAIN FEEDER BAND EXTENDING FROM JUST N OF TPA TO JUST S OF JAX -- AS WELL AS INTO PARTS OF ERN GA...GREATEST THREAT REMAINS ACROSS SC. THICK CLOUD COVER EXISTS ACROSS MOST OF SC...ALTHOUGH SOME BREAKS ARE EVIDENT ACROSS NRN PORTIONS OF THE STATE. SOME THINNING IN THE CLOUD COVER MAY OCCUR WITH TIME ACROSS SRN AND WRN PORTIONS OF THE STATE...AS DRY SLOT SPREADS NEWD INTO THE REGION. OVERALL HOWEVER...EXPECT ONLY MINIMAL HEATING / DESTABILIZATION ACROSS THIS REGION. NONETHELESS...SUFFICIENT INSTABILITY EXISTS TO SUPPORT THUNDERSTORMS -- PARTICULARLY ACROSS THE NERN THIRD OF THE STATE WHERE THINNER CLOUD COVER AND ASSOCIATED WEAK HEATING HAS ALLOWED AROUND 1000 J/KG MEAN-LAYER CAPE TO DEVELOP. WITH LATEST COLUMBIA AND CHARLESTON SC VWPS SHOWING PERSISTENT 35 TO 40 KTS 0-1 KM SHEAR / OVER 300 M2/S2 0-1 KM HELICITY...LOW-LEVEL ROTATION AND ISOLATED TORNADOES WILL REMAIN A THREAT FOR THE NEXT SEVERAL HOURS. ..GOSS.. 09/07/2004 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...RAH...ILM...CHS...CAE...GSP...FFC... 35128235 35008149 34787918 34137842 32258044 31948119 32038293 34828353
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 12:30 AM EDT | Mesoscale Discussion | SPC | Brantley, Bryan, Bulloch, Camden, Chatham, Effingham and 7 more | 2 hr |
| Sep 7, 3:22 AM EDT | Mesoscale Discussion | SPC | Brantley, Bryan, Bulloch, Camden, Charlton, Chatham and 8 more | 83 min |
| Sep 7, 4:00 AM EDT | Tornado Watch | SPC | Bryan, Bulloch, Burke, Candler, Chatham, Columbia and 15 more | 10 hr |
| Sep 7, 5:30 AM EDT | Mesoscale Discussion | SPC | Fannin, Gilmer, Murray, Rabun, Towns, Union | 3 hr |
| Sep 7, 7:34 AM EDT | Mesoscale Discussion | SPC | Bryan, Bulloch, Burke, Candler, Chatham, Columbia and 15 more | 116 min |
| Sep 7, 11:55 AM EDT | Tornado Watch | SPC | Bryan, Bulloch, Burke, Candler, Chatham, Columbia and 12 more | 7 hr |
| Sep 7, 3:19 PM EDT | Mesoscale Discussion | SPC | Appling, Bryan, Bulloch, Burke, Candler, Chatham and 28 more | 116 min |
| Sep 7, 6:07 PM EDT | Mesoscale Discussion | SPC | Bryan, Bulloch, Burke, Columbia, Effingham, Jenkins and 4 more | 53 min |
| Sep 7, 6:40 PM EDT | Tornado Watch | SPC | Bryan, Bulloch, Burke, Candler, Chatham, Columbia and 11 more | 6 hr |
| Sep 7, 1:45 PM EDT | Tornado Watch | SPC | Bladen, Brunswick, Columbus, Cumberland, Harnett, Hoke and 3 more | 5 hr |
Nearby
Mesoscale Discussions in South Carolina, 2004Mesoscale Discussions in Georgia, 2004Mesoscale Discussions in North Carolina, 2004Every mesoscale discussion 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.