Alert archive / North Carolina / Mesoscale Discussions in 2003

Mesoscale Discussion 1266

June 8, 200319 counties in North Carolina; Pickens County, Spartanburg County, South Carolina; 4 counties in Virginia

The Storm Prediction Center issued this mesoscale discussion at Jun 8, 2003, 6:43 PM EDT for 19 counties in North Carolina; Pickens County, Spartanburg County, South Carolina; 4 counties in Virginia. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jun 8, 2003, 6:43 PM EDT (22:43 UTC)
Expired
Jun 8, 2003, 8:45 PM EDT
In force
2 hr
Issued by
the Storm Prediction Center
All 25 counties

Alexander County, NC, Alleghany County, NC, Avery County, NC, Buncombe County, NC, Burke County, NC, Caldwell County, NC, Catawba County, NC, Cleveland County, NC, Henderson County, NC, Iredell County, NC, Lincoln County, NC, McDowell County, NC, Polk County, NC, Rutherford County, NC, Surry County, NC, Transylvania County, NC, Watauga County, NC, Wilkes County, NC, Yadkin County, NC, Pickens County, SC, Spartanburg County, SC, Carroll County, VA, City of Galax, VA, Grayson County, VA, Patrick County, VA

The radar

The Greer radar (KGSP), 125 km from the middle of the area, began a volume at 22:45 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, 10.7 hours before the alert went out and 146 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 2003-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 614 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 2003-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 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
614 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
487 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
62 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

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, 2003Mesoscale Discussions in Virginia, 2003Mesoscale Discussions in South Carolina, 2003Every mesoscale discussion in 2003

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.