Alert archive / North Carolina / Mesoscale Discussions in 2014

Mesoscale Discussion 1850

October 11, 201423 counties in Georgia; 29 counties in North Carolina; 23 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Oct 11, 2014, 2:57 PM EDT for 23 counties in Georgia; 29 counties in North Carolina; 23 counties in South Carolina. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Oct 11, 2014, 2:57 PM EDT (18:57 UTC)
Expired
Oct 11, 2014, 5:00 PM EDT
In force
2 hr
Issued by
the Storm Prediction Center
Chance of a watch
20%
All 75 counties

Clarke County, GA, Clayton County, GA, Columbia County, GA, Elbert County, GA, Greene County, GA, Hancock County, GA, Hart County, GA, Henry County, GA, Jasper County, GA, Lincoln County, GA, Madison County, GA, McDuffie County, GA, Morgan County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Putnam County, GA, Richmond County, GA, Rockdale County, GA, Taliaferro County, GA, Walton County, GA, Warren County, GA, Wilkes County, GA, Alamance County, NC, Anson County, NC, Cabarrus County, NC, Chatham County, NC, Cumberland County, NC, Davidson County, NC, Durham County, NC, Edgecombe County, NC, Franklin County, NC, Gaston County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Mecklenburg County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Orange County, NC, Randolph County, NC, Richmond County, NC, Robeson County, NC, Rowan County, NC, Scotland County, NC, Stanly County, NC, Union County, NC, Wake County, NC, Wayne County, NC, Wilson County, NC, Abbeville County, SC, Aiken County, SC, Anderson County, SC, Cherokee County, SC, Chester County, SC, Chesterfield County, SC, Darlington County, SC, Edgefield County, SC, Fairfield County, SC, Greenwood County, SC, Kershaw County, SC, Lancaster County, SC, Laurens County, SC, Lee County, SC, Lexington County, SC, Marlboro County, SC, McCormick County, SC, Newberry County, SC, Richland County, SC, Saluda County, SC, Spartanburg County, SC, Union County, SC, York County, SC

The radar

The Columbia radar (KCAE), 67 km from the middle of the area, began a volume at 19:00 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 7.0 hours before the alert went out and 204 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, Greensboro/Hi Pt, NC at 12:00Z on 2014-10-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 247 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, Greensboro/Hi Pt, NC at 12:00Z on 2014-10-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 235 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
247 J/kg
Mixed-layer CIN
-59 J/kg
Mixed-layer LCL
873 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
235 m²/s²
0-3 km storm-relative helicity
211 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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Nearby

Mesoscale Discussions in North Carolina, 2014Mesoscale Discussions in Georgia, 2014Mesoscale Discussions in South Carolina, 2014Every mesoscale discussion in 2014

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.