Alert archive / South Carolina / Mesoscale Discussions in 2007

Mesoscale Discussion 254

March 2, 2007Richmond County, Georgia; 11 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Mar 2, 2007, 3:00 AM EST for Richmond County, Georgia; 11 counties in South Carolina. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued
Mar 2, 2007, 3:00 AM EST (08:00 UTC)
Expired
Mar 2, 2007, 4:30 AM EST
In force
90 min
Issued by
the Storm Prediction Center

Counties Richmond County, GA, Aiken County, SC, Calhoun County, SC, Clarendon County, SC, Fairfield County, SC, Kershaw County, SC, Lancaster County, SC, Lee County, SC, Lexington County, SC, Orangeburg County, SC, Richland County, SC, Sumter County, SC

The radar

The Columbia radar (KCAE), 8 km from the middle of the area, began a volume at 08:01 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 nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 8.0 hours before the alert went out and 148 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 2007-03-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 16 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 00:00Z on 2007-03-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 174 square meters per square second.19395878Sfc1 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
16 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
488 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
174 m²/s²
0-3 km storm-relative helicity
402 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
Mar 1, 8:27 PM ESTTornado WatchSPCBurke, Columbia, Elbert, Franklin, Habersham, Hart and 5 more9 hr
Mar 1, 8:39 PM ESTTornado WatchSPCBaker, Baldwin, Banks, Barrow, Bartow, Ben Hill and 100 more8 hr
Mar 1, 10:11 PM ESTMesoscale DiscussionSPCAppling, Atkinson, Bacon, Ben Hill, Berrien, Brantley and 27 more94 min
Mar 2, 12:54 AM ESTTornado WatchSPCAppling, Atkinson, Bacon, Brantley, Bryan, Bulloch and 20 more7 hr
Mar 2, 2:33 AM ESTMesoscale DiscussionSPCAtkinson, Berrien, Brooks, Coffee, Cook, Jeff Davis and 2 more87 min
Mar 2, 4:13 AM ESTMesoscale DiscussionSPCAppling, Bacon, Brantley, Bryan, Bulloch, Camden and 17 more62 min
Mar 2, 6:21 AM ESTMesoscale DiscussionSPCCamden, Chatham, Glynn, McIntosh84 min
Mar 1, 7:59 PM ESTMesoscale DiscussionSPCAiken, Bamberg, Calhoun, Cherokee, Chester, Chesterfield and 18 more91 min
Mar 1, 11:44 PM ESTMesoscale DiscussionSPCDillon, Florence, Horry, Marion, Marlboro91 min
Mar 2, 12:28 AM ESTTornado WatchSPCDarlington, Dillon, Florence, Georgetown, Horry, Marion and 2 more8 hr

Nearby

Mesoscale Discussions in South Carolina, 2007Mesoscale Discussions in Georgia, 2007Every mesoscale discussion in 2007

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.