Alert archive / North Carolina / Mesoscale Discussions in 2016

Mesoscale Discussion 1142

July 5, 201650 counties in North Carolina; 4 counties in South Carolina; 25 counties in Virginia

The Storm Prediction Center issued this mesoscale discussion at Jul 5, 2016, 2:10 PM EDT for 50 counties in North Carolina; 4 counties in South Carolina; 25 counties in Virginia. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jul 5, 2016, 2:10 PM EDT (18:10 UTC)
Expired
Jul 5, 2016, 4:15 PM EDT
In force
2 hr
Issued by
the Storm Prediction Center
Chance of a watch
40%
All 79 counties

Alamance County, NC, Alexander County, NC, Alleghany County, NC, Anson County, NC, Burke County, NC, Cabarrus County, NC, Caldwell 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, Franklin County, NC, Gaston County, NC, Granville County, NC, Guilford County, NC, Halifax County, NC, Harnett County, NC, Henderson County, NC, Iredell County, NC, Johnston County, NC, Lee County, NC, Lincoln County, NC, McDowell County, NC, Mecklenburg County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Northampton County, NC, Orange County, NC, Person County, NC, Polk County, NC, Randolph County, NC, Richmond County, NC, Rockingham County, NC, Rowan County, NC, Rutherford County, NC, Stanly County, NC, Stokes County, NC, Surry County, NC, Union County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Wilkes County, NC, Wilson County, NC, Yadkin County, NC, Cherokee County, SC, Chester County, SC, Lancaster County, SC, York County, SC, Amelia County, VA, Appomattox County, VA, Brunswick County, VA, Campbell County, VA, Carroll County, VA, Charlotte County, VA, City of Colonial Heights, VA, City of Danville, VA, City of Emporia, VA, City of Galax, VA, City of Hopewell, VA, City of Martinsville, VA, City of Petersburg, VA, Dinwiddie County, VA, Floyd County, VA, Franklin County, VA, Greensville County, VA, Halifax County, VA, Henry County, VA, Lunenburg County, VA, Mecklenburg County, VA, Nottoway County, VA, Patrick County, VA, Pittsylvania County, VA, Prince Edward County, VA

The radar

The Roanoke radar (KFCX), 131 km from the middle of the area, began a volume at 18:13 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 6.2 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 12:00Z on 2016-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 427 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 2016-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 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
427 J/kg
Mixed-layer CIN
-108 J/kg
Mixed-layer LCL
1117 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
97 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.8

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 5, 4:46 PM EDTSevere Thunderstorm WatchSPCAlamance, Anson, Cabarrus, Chatham, Cumberland, Davidson and 28 more4 hr
Jul 5, 6:29 PM EDTMesoscale DiscussionSPCBeaufort, Brunswick, Columbus, Craven, Duplin, Jones and 5 more2 hr
Jul 5, 6:56 PM EDTSevere Thunderstorm WatchSPCBeaufort, Carteret, Craven, Dare, Duplin, Greene and 9 more3 hr
Jul 5, 1:45 PM EDTMesoscale DiscussionSPCAbbeville, Aiken, Anderson, Edgefield, Greenwood, Laurens and 4 more3 hr

Nearby

Mesoscale Discussions in North Carolina, 2016Mesoscale Discussions in Virginia, 2016Mesoscale Discussions in South Carolina, 2016Every mesoscale discussion in 2016

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.