Alert archive / South Carolina / Mesoscale Discussions in 2003

Mesoscale Discussion 2093

August 5, 2003Columbia County, Lincoln County, Richmond County, Georgia; 24 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Aug 5, 2003, 1:35 PM EDT for Columbia County, Lincoln County, Richmond County, Georgia; 24 counties in South Carolina. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued
Aug 5, 2003, 1:35 PM EDT (17:35 UTC)
Expired
Aug 5, 2003, 3:30 PM EDT
In force
115 min
Issued by
the Storm Prediction Center
All 27 counties

Columbia County, GA, Lincoln County, GA, Richmond County, GA, Abbeville County, SC, Aiken County, SC, Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Cherokee County, SC, Chester County, SC, Clarendon County, SC, Darlington County, SC, Edgefield County, SC, Fairfield County, SC, Greenwood County, SC, Kershaw County, SC, Lancaster County, SC, Laurens County, SC, Lee County, SC, Lexington County, SC, McCormick County, SC, Newberry County, SC, Orangeburg County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC, Union County, SC

The radar

The Columbia radar (KCAE), 40 km from the middle of the area, began a volume at 17:35 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, 5.6 hours before the alert went out and 196 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 12:00Z on 2003-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1062 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2003-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 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
1062 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
615 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
61 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

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
Aug 4, 9:59 PM EDTMesoscale DiscussionSPCBanks, Bartow, Catoosa, Chattooga, Cherokee, Dawson and 17 more2 hr
Aug 5, 2:45 PM EDTSevere Thunderstorm WatchSPCLincoln, Wilkes4 hr
Aug 5, 6:01 PM EDTMesoscale DiscussionSPCClarke, Columbia, Elbert, Franklin, Greene, Hart and 8 more59 min

Nearby

Mesoscale Discussions in South Carolina, 2003Mesoscale Discussions in Georgia, 2003Every mesoscale discussion 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.