Alert archive / South Carolina / Mesoscale Discussions in 2004

Mesoscale Discussion 2223

September 16, 200422 counties in Georgia; 28 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Sep 16, 2004, 10:58 AM EDT for 22 counties in Georgia; 28 counties in South Carolina. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Sep 16, 2004, 10:58 AM EDT (14:58 UTC)
Expired
Sep 16, 2004, 1:00 PM EDT
In force
2 hr
Issued by
the Storm Prediction Center
All 50 counties

Bryan County, GA, Bulloch County, GA, Burke County, GA, Candler County, GA, Chatham County, GA, Columbia County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Glascock County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Liberty County, GA, Lincoln County, GA, Long County, GA, McDuffie County, GA, Richmond County, GA, Screven County, GA, Tattnall County, GA, Toombs County, GA, Treutlen County, GA, Aiken County, SC, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Berkeley County, SC, Calhoun County, SC, Clarendon County, SC, Colleton County, SC, Darlington County, SC, Dorchester County, SC, Edgefield County, SC, Fairfield County, SC, Florence County, SC, Georgetown County, SC, Greenwood County, SC, Hampton County, SC, Jasper County, SC, Kershaw County, SC, Lee County, SC, Lexington County, SC, Marion County, SC, McCormick County, SC, Newberry County, SC, Orangeburg County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC, Williamsburg County, SC

The radar

The Charleston,SC radar (KCLX), 49 km from the middle of the area, began a volume at 15:01 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, 3.0 hours before the alert went out and 108 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 2004-09-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2178 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 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 2004-09-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 square meters per square second.1939Sfc1 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
2178 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
527 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
61 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.8

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 15, 9:09 PM EDTMesoscale DiscussionSPCBaker, Calhoun, Clay, Decatur, Dougherty, Early and 8 more2 hr
Sep 15, 11:35 PM EDTMesoscale DiscussionSPCBaker, Calhoun, Chattahoochee, Clay, Decatur, Dougherty and 20 more115 min
Sep 16, 2:10 AM EDTTornado WatchSPCBaker, Calhoun, Chattahoochee, Clay, Colquitt, Crawford and 26 more9 hr
Sep 16, 3:57 AM EDTMesoscale DiscussionSPCBaker, Calhoun, Chattahoochee, Clay, Colquitt, Crawford and 26 more2 hr
Sep 16, 6:00 AM EDTTornado WatchSPCAtkinson, Ben Hill, Berrien, Brooks, Clinch, Coffee and 9 more5 hr
Sep 16, 8:03 AM EDTMesoscale DiscussionSPCAtkinson, Baker, Ben Hill, Berrien, Brooks, Calhoun and 40 more117 min
Sep 16, 10:09 AM EDTMesoscale DiscussionSPCAtkinson, Baker, Baldwin, Bartow, Ben Hill, Berrien and 85 more66 min
Sep 16, 10:45 AM EDTTornado WatchSPCBaldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 84 more10 hr
Sep 16, 10:50 AM EDTTornado WatchSPCAppling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 29 more10 hr
Sep 16, 12:20 PM EDTTornado WatchSPCBryan, Bulloch, Burke, Candler, Chatham, Columbia and 19 more9 hr
Sep 16, 2:16 PM EDTMesoscale DiscussionSPCAtkinson, Baker, Baldwin, Banks, Barrow, Bartow and 97 more119 min
Sep 16, 3:31 PM EDTMesoscale DiscussionSPCBulloch, Burke, Candler, Columbia, Effingham, Emanuel and 11 more119 min
Sep 16, 6:38 PM EDTMesoscale DiscussionSPCBaldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 110 more2 hr

Nearby

Mesoscale Discussions in South 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.