Alert archive / South Carolina / Mesoscale Discussions in 2004

Mesoscale Discussion 1591

July 10, 200415 counties in North Carolina; 16 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Jul 10, 2004, 2:09 PM EDT for 15 counties in North Carolina; 16 counties in South Carolina. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued: Jul 10, 2004, 2:09 PM EDT (18:09 UTC)
Expired: Jul 10, 2004, 3:45 PM EDT
In force: 96 min
Issued by: the Storm Prediction Center

All 31 counties

Bladen County, NC, Brunswick County, NC, Carteret County, NC, Columbus County, NC, Cumberland County, NC, Duplin County, NC, Hoke County, NC, Jones County, NC, New Hanover County, NC, Onslow County, NC, Pender County, NC, Richmond County, NC, Robeson County, NC, Sampson County, NC, Scotland County, NC, Berkeley County, SC, Calhoun County, SC, Chesterfield County, SC, Clarendon County, SC, Darlington County, SC, Dillon County, SC, Dorchester County, SC, Florence County, SC, Georgetown County, SC, Horry County, SC, Lee County, SC, Marion County, SC, Marlboro County, SC, Orangeburg County, SC, Sumter County, SC, Williamsburg County, SC

The radar

The Wilmington radar (KLTX), 92 km from the middle of the area, began a volume at 18:12 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, 6.2 hours before the alert went out and 136 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: 1260 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 1029 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 17 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
Jul 10, 5:07 PM EDT	Mesoscale Discussion	SPC	Alamance, Caswell, Durham, Franklin, Granville, Guilford and 8 more	113 min

Nearby

Mesoscale Discussions in South Carolina, 2004 Mesoscale Discussions in North Carolina, 2004 Every mesoscale discussion in 2004

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.