Alert archive / North Carolina / Mesoscale Discussions in 2017

Mesoscale Discussion 1092

June 19, 201737 counties in North Carolina; 16 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Jun 19, 2017, 1:03 PM EDT for 37 counties in North Carolina; 16 counties in South Carolina. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jun 19, 2017, 1:03 PM EDT (17:03 UTC)
Expired: Jun 19, 2017, 3:30 PM EDT
In force: 2 hr
Issued by: the Storm Prediction Center
Chance of a watch: 40%

All 53 counties

Anson County, NC, Bladen County, NC, Cabarrus County, NC, Catawba County, NC, Chatham County, NC, Cleveland County, NC, Columbus County, NC, Cumberland County, NC, Davidson County, NC, Duplin County, NC, Gaston County, NC, Greene County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Jones County, NC, Lee County, NC, Lenoir County, NC, Lincoln County, NC, Mecklenburg County, NC, Montgomery County, NC, Moore County, NC, Onslow County, NC, Pender County, NC, Pitt County, NC, Randolph County, NC, Richmond County, NC, Robeson County, NC, Rowan County, NC, Rutherford County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Union County, NC, Wake County, NC, Wayne County, NC, Wilson County, NC, Cherokee County, SC, Chester County, SC, Chesterfield County, SC, Darlington County, SC, Dillon County, SC, Fairfield County, SC, Greenville County, SC, Kershaw County, SC, Lancaster County, SC, Laurens County, SC, Lee County, SC, Marlboro County, SC, Newberry County, SC, Spartanburg County, SC, Union County, SC, York County, SC

The radar

The Raleigh/Durham radar (KRAX), 141 km from the middle of the area, began a volume at 17:05 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, 5.1 hours before the alert went out and 130 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 464 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 582 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 125 m²/s²
0-3 km storm-relative helicity: 112 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

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.

Issued	Product	Office	Counties	Lasted
Jun 19, 12:14 PM EDT	Mesoscale Discussion	SPC	Caswell, Franklin, Granville, Person, Vance, Warren	2 hr
Jun 19, 12:48 PM EDT	Severe Thunderstorm Watch	SPC	Bertie, Caswell, Gates, Hertford, Northampton, Rockingham and 1 more	8 hr
Jun 19, 6:43 PM EDT	Mesoscale Discussion	SPC	Alamance, Anson, Cabarrus, Caswell, Catawba, Chatham and 33 more	2 hr

Nearby

Mesoscale Discussions in North Carolina, 2017 Mesoscale Discussions in South Carolina, 2017 Every mesoscale discussion in 2017

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.