Alert archive / North Carolina / Mesoscale Discussions in 2008

Mesoscale Discussion 2452

December 11, 200851 counties in North Carolina; 26 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Dec 11, 2008, 1:28 PM EST for 51 counties in North Carolina; 26 counties in South Carolina. It was in force for 92 min.

The area

The outline as issued.

The facts

Issued
Dec 11, 2008, 1:28 PM EST (18:28 UTC)
Expired
Dec 11, 2008, 3:00 PM EST
In force
92 min
Issued by
the Storm Prediction Center
All 77 counties

Anson County, NC, Beaufort County, NC, Bertie County, NC, Bladen County, NC, Brunswick County, NC, Camden County, NC, Carteret County, NC, Chatham County, NC, Chowan County, NC, Columbus County, NC, Craven County, NC, Cumberland County, NC, Dare County, NC, Duplin County, NC, Durham County, NC, Edgecombe County, NC, Franklin County, NC, Greene County, NC, Halifax County, NC, Harnett County, NC, Hertford County, NC, Hoke County, NC, Hyde County, NC, Johnston County, NC, Jones County, NC, Lee County, NC, Lenoir County, NC, Martin County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, New Hanover County, NC, Northampton County, NC, Onslow County, NC, Pamlico County, NC, Pasquotank County, NC, Pender County, NC, Perquimans County, NC, Pitt County, NC, Richmond County, NC, Robeson County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Tyrrell County, NC, Union County, NC, Wake County, NC, Warren County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC, Berkeley County, SC, Calhoun County, SC, Charleston County, SC, Chester County, SC, Chesterfield County, SC, Clarendon County, SC, Colleton County, SC, Darlington County, SC, Dillon County, SC, Dorchester County, SC, Fairfield County, SC, Florence County, SC, Georgetown County, SC, Horry County, SC, Kershaw County, SC, Lancaster County, SC, Lee County, SC, Lexington County, SC, Marion County, SC, Marlboro County, SC, Orangeburg County, SC, Richland County, SC, Sumter County, SC, Union County, SC, Williamsburg County, SC, York County, SC

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 6.5 hours before the alert went out and 175 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 2008-12-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 823 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 2008-12-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 176 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
823 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
527 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
176 m²/s²
0-3 km storm-relative helicity
190 m²/s²
Significant tornado parameter
0.7
Supercell composite
5.9

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
Dec 11, 10:01 AM ESTMesoscale DiscussionSPCAlamance, Alexander, Anson, Avery, Bladen, Brunswick and 56 more119 min
Dec 11, 11:00 AM ESTTornado WatchSPCAnson, Bladen, Brunswick, Cabarrus, Chatham, Columbus and 23 more8 hr
Dec 11, 11:30 AM ESTMesoscale DiscussionSPCBeaufort, Bertie, Carteret, Chowan, Craven, Dare and 10 more30 min
Dec 11, 11:43 AM ESTTornado WatchSPCBeaufort, Bertie, Camden, Carteret, Chowan, Craven and 25 more9 hr
Dec 11, 3:17 PM ESTTornado WatchSPCCurrituck6 hr
Dec 11, 3:57 PM ESTMesoscale DiscussionSPCBeaufort, Bertie, Bladen, Brunswick, Cabarrus, Camden and 49 more2 hr
Dec 11, 8:24 AM ESTMesoscale DiscussionSPCJasper66 min
Dec 11, 10:15 AM ESTSevere Thunderstorm WatchSPCAbbeville, Anderson, Greenville, Greenwood, McCormick, Oconee and 1 more4 hr

Nearby

Mesoscale Discussions in North Carolina, 2008Mesoscale Discussions in South Carolina, 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.