Alert archive / North Carolina / Mesoscale Discussions in 2003

Mesoscale Discussion 1223

June 3, 20035 counties in North Carolina; Georgetown County, Horry County, Williamsburg County, South Carolina

The Storm Prediction Center issued this mesoscale discussion at Jun 3, 2003, 7:56 PM EDT for 5 counties in North Carolina; Georgetown County, Horry County, Williamsburg County, South Carolina. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Jun 3, 2003, 7:56 PM EDT (23:56 UTC)
Expired: Jun 3, 2003, 10:30 PM EDT
In force: 3 hr
Issued by: the Storm Prediction Center

Counties Brunswick County, NC, Columbus County, NC, New Hanover County, NC, Onslow County, NC, Pender County, NC, Georgetown County, SC, Horry County, SC, Williamsburg County, SC

The radar

The Wilmington radar (KLTX), 10 km from the middle of the area, began a volume at 23:56 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

Charleston AFB, SC (KCHS), launched 12:00Z, 11.9 hours before the alert went out and 191 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: 15 J/kg
Mixed-layer CIN: -329 J/kg
Mixed-layer LCL: 997 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 83 m²/s²
0-3 km storm-relative helicity: 96 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.

Issued	Product	Office	Counties	Lasted
Jun 3, 12:05 PM EDT	Mesoscale Discussion	SPC	Aiken, Allendale, Bamberg, Barnwell, Edgefield, Hampton and 4 more	115 min

Nearby

Mesoscale Discussions in North Carolina, 2003 Mesoscale Discussions in South Carolina, 2003 Every 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.