Alert archive / South Carolina / Mesoscale Discussions in 2010

Mesoscale Discussion 63

January 24, 20105 counties in Georgia; 22 counties in North Carolina; 25 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Jan 24, 2010, 11:40 PM EST for 5 counties in Georgia; 22 counties in North Carolina; 25 counties in South Carolina. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jan 24, 2010, 11:40 PM EST (04:40 UTC)
Expired
Jan 25, 2010, 1:45 AM EST
In force
2 hr
Issued by
the Storm Prediction Center
All 52 counties

Bryan County, GA, Chatham County, GA, Effingham County, GA, Liberty County, GA, McIntosh County, GA, Alamance County, NC, Anson County, NC, Bladen County, NC, Chatham County, NC, Columbus County, NC, Cumberland County, NC, Durham County, NC, Guilford County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Montgomery County, NC, Moore County, NC, Orange County, NC, Randolph County, NC, Richmond County, NC, Robeson County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Wake County, NC, Allendale County, SC, Bamberg County, SC, Beaufort County, SC, Berkeley County, SC, Calhoun County, SC, Charleston County, SC, Chesterfield County, SC, Clarendon County, SC, Colleton County, SC, Darlington County, SC, Dillon County, SC, Dorchester County, SC, Florence County, SC, Georgetown County, SC, Hampton County, SC, Horry County, SC, Jasper County, SC, Kershaw County, SC, Lee County, SC, Marion County, SC, Marlboro County, SC, Orangeburg County, SC, Richland County, SC, Sumter County, SC, Williamsburg County, SC

The radar

The Columbia radar (KCAE), 86 km from the middle of the area, began a volume at 04:42 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, 4.7 hours before the alert went out and 74 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 2010-01-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 319 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 00:00Z on 2010-01-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 385 square meters per square second.1939587897Sfc1 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
319 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
602 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
385 m²/s²
0-3 km storm-relative helicity
440 m²/s²
Significant tornado parameter
0.6
Supercell composite
2.9

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
Jan 24, 8:55 PM ESTMesoscale DiscussionSPCAppling, Atkinson, Bacon, Baldwin, Ben Hill, Berrien and 54 more95 min
Jan 24, 11:33 PM ESTTornado WatchSPCBryan, Bulloch, Burke, Candler, Chatham, Effingham and 7 more7 hr
Jan 25, 3:25 AM ESTMesoscale DiscussionSPCBeaufort, Bertie, Bladen, Brunswick, Carteret, Chowan and 33 more110 min

Nearby

Mesoscale Discussions in South Carolina, 2010Mesoscale Discussions in North Carolina, 2010Mesoscale Discussions in Georgia, 2010Every mesoscale discussion in 2010

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.