Alert archive / South Carolina / Mesoscale Discussions in 2008

Mesoscale Discussion 558

April 4, 2008Burke County, Richmond County, Georgia; 6 counties in North Carolina; 27 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Apr 4, 2008, 5:39 PM EDT for Burke County, Richmond County, Georgia; 6 counties in North Carolina; 27 counties in South Carolina. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued
Apr 4, 2008, 5:39 PM EDT (21:39 UTC)
Expired
Apr 4, 2008, 6:45 PM EDT
In force
66 min
Issued by
the Storm Prediction Center
All 35 counties

Burke County, GA, Richmond County, GA, Anson County, NC, Gaston County, NC, Mecklenburg County, NC, Richmond County, NC, Stanly County, NC, Union County, NC, Aiken County, SC, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Cherokee County, SC, Chester County, SC, Chesterfield County, SC, Clarendon County, SC, Darlington County, SC, Edgefield County, SC, Fairfield County, SC, Florence County, SC, Greenwood County, SC, Kershaw County, SC, Lancaster County, SC, Laurens County, SC, Lee County, SC, Lexington County, SC, Marlboro County, SC, Newberry County, SC, Orangeburg County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC, Union County, SC, York County, SC

The radar

The Columbia radar (KCAE), 30 km from the middle of the area, began a volume at 21:41 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, 9.7 hours before the alert went out and 168 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 2008-04-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2008-04-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
510 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
97 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

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
Apr 4, 1:33 PM EDTMesoscale DiscussionSPCBaldwin, Barrow, Bartow, Bibb, Bleckley, Butts and 51 more87 min
Apr 4, 2:27 PM EDTTornado WatchSPCBaldwin, Banks, Barrow, Bartow, Bibb, Butts and 75 more9 hr
Apr 4, 4:17 PM EDTMesoscale DiscussionSPCBaldwin, Banks, Barrow, Bartow, Butts, Carroll and 38 more88 min
Apr 4, 6:02 PM EDTMesoscale DiscussionSPCClay, Early, Quitman88 min
Apr 4, 6:10 PM EDTTornado WatchSPCBurke, Columbia, Lincoln, McDuffie, Richmond7 hr
Apr 4, 6:48 PM EDTTornado WatchSPCBleckley, Calhoun, Chattahoochee, Clay, Crisp, Dodge and 17 more6 hr

Nearby

Mesoscale Discussions in South Carolina, 2008Mesoscale Discussions in North Carolina, 2008Mesoscale Discussions in Georgia, 2008Every mesoscale discussion in 2008

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.