Alert archive / South Carolina / Mesoscale Discussions in 2004

Mesoscale Discussion 2186

September 7, 20046 counties in Georgia; 20 counties in North Carolina; 38 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Sep 7, 2004, 10:09 PM EDT for 6 counties in Georgia; 20 counties in North Carolina; 38 counties in South Carolina. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued
Sep 7, 2004, 10:09 PM EDT (02:09 UTC)
Expired
Sep 7, 2004, 11:45 PM EDT
In force
96 min
Issued by
the Storm Prediction Center
All 64 counties

Bryan County, GA, Bulloch County, GA, Chatham County, GA, Effingham County, GA, Evans County, GA, Screven County, GA, Anson County, NC, Bladen County, NC, Cabarrus County, NC, Cleveland County, NC, Columbus County, NC, Cumberland County, NC, Gaston County, NC, Hoke County, NC, Lincoln County, NC, Mecklenburg County, NC, Montgomery County, NC, Moore County, NC, Polk County, NC, Richmond County, NC, Robeson County, NC, Rutherford County, NC, Sampson County, NC, Scotland County, NC, Stanly 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, Cherokee County, SC, Chester County, SC, Chesterfield County, SC, Clarendon County, SC, Colleton County, SC, Darlington County, SC, Dillon County, SC, Dorchester County, SC, Fairfield County, SC, Florence County, SC, Georgetown County, SC, Greenville 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, Newberry County, SC, Orangeburg 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), 63 km from the middle of the area, began a volume at 02:09 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 00:00Z, 2.2 hours before the alert went out and 142 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.

Skew-T log-pSkew-T log-p diagram, Charleston AFB, SC at 00:00Z on 2004-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2876 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 00:00Z on 2004-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 169 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
2876 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
484 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
169 m²/s²
0-3 km storm-relative helicity
211 m²/s²
Significant tornado parameter
0.0
Supercell composite
11.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 8, 12:30 AM EDTTornado WatchSPCBulloch, Burke, Candler, Effingham, Jenkins, Richmond and 1 more7 hr
Sep 8, 3:38 AM EDTMesoscale DiscussionSPCBulloch, Burke, Candler, Effingham, Jenkins, Richmond and 1 more3 hr
Sep 8, 6:50 AM EDTTornado WatchSPCAlamance, Anson, Bladen, Cabarrus, Caswell, Chatham and 42 more7 hr
Sep 8, 8:41 AM EDTMesoscale DiscussionSPCAlamance, Anson, Bladen, Cabarrus, Caswell, Chatham and 44 more2 hr
Sep 8, 12:00 PM EDTMesoscale DiscussionSPCAlamance, Bladen, Caswell, Chatham, Cumberland, Duplin and 24 more2 hr
Sep 8, 12:50 PM EDTTornado WatchSPCAlamance, Caswell, Chatham, Cumberland, Duplin, Durham and 30 more6 hr
Sep 8, 3:39 PM EDTMesoscale DiscussionSPCBertie, Edgecombe, Franklin, Gates, Greene, Halifax and 8 more2 hr

Nearby

Mesoscale Discussions in South Carolina, 2004Mesoscale Discussions in North Carolina, 2004Mesoscale Discussions in Georgia, 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.