Alert archive / North Carolina / Mesoscale Discussions in 2014

Mesoscale Discussion 173

March 6, 201430 counties in North Carolina; 11 counties in South Carolina; 10 counties in Virginia

The Storm Prediction Center issued this mesoscale discussion at Mar 6, 2014, 8:04 PM EST for 30 counties in North Carolina; 11 counties in South Carolina; 10 counties in Virginia. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Mar 6, 2014, 8:04 PM EST (01:04 UTC)
Expired
Mar 7, 2014, 12:00 AM EST
In force
4 hr
Issued by
the Storm Prediction Center
All 51 counties

Alamance County, NC, Cabarrus County, NC, Caswell County, NC, Catawba County, NC, Chatham County, NC, Cleveland County, NC, Davidson County, NC, Davie County, NC, Durham County, NC, Forsyth County, NC, Gaston County, NC, Granville County, NC, Guilford County, NC, Iredell County, NC, Lincoln County, NC, Mecklenburg County, NC, Montgomery County, NC, Orange County, NC, Person County, NC, Polk County, NC, Randolph County, NC, Rockingham County, NC, Rowan County, NC, Rutherford County, NC, Stanly County, NC, Stokes County, NC, Union County, NC, Vance County, NC, Warren County, NC, Yadkin County, NC, Abbeville County, SC, Anderson County, SC, Cherokee County, SC, Chester County, SC, Greenville County, SC, Greenwood County, SC, Laurens County, SC, Pickens County, SC, Spartanburg County, SC, Union County, SC, York County, SC, Amelia County, VA, Brunswick County, VA, Charlotte County, VA, City of Danville, VA, Halifax County, VA, Lunenburg County, VA, Mecklenburg County, VA, Nottoway County, VA, Pittsylvania County, VA, Prince Edward County, VA

The radar

The Roanoke radar (KFCX), 137 km from the middle of the area, began a volume at 01:03 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 00:00Z, 1.1 hours before the alert went out and 43 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 00:00Z on 2014-03-07Temperature 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, Greensboro/Hi Pt, NC at 00:00Z on 2014-03-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 179 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
785 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
179 m²/s²
0-3 km storm-relative helicity
410 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 7, 12:37 AM ESTMesoscale DiscussionSPCAlamance, Cabarrus, Caswell, Chatham, Davidson, Durham and 12 more4 hr

Nearby

Mesoscale Discussions in North Carolina, 2014Mesoscale Discussions in South Carolina, 2014Mesoscale Discussions in Virginia, 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.