Alert archive / South Carolina / Mesoscale Discussions in 2004

Mesoscale Discussion 594

May 8, 20044 states

The Storm Prediction Center issued this mesoscale discussion at May 8, 2004, 3:51 PM EDT for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: May 8, 2004, 3:51 PM EDT (19:51 UTC)
Expired: May 8, 2004, 6:15 PM EDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 42 counties

Rabun County, GA, Towns County, GA, Union County, GA, Avery County, NC, Buncombe County, NC, Clay County, NC, Columbus County, NC, Haywood County, NC, Henderson County, NC, Jackson County, NC, Macon County, NC, Madison County, NC, McDowell County, NC, Mitchell County, NC, Polk County, NC, Transylvania County, NC, Yancey County, NC, Anderson County, SC, Cherokee County, SC, Chester County, SC, Chesterfield County, SC, Clarendon County, SC, Darlington County, SC, Dillon County, SC, Fairfield County, SC, Florence County, SC, Greenville County, SC, Kershaw County, SC, Lancaster County, SC, Laurens County, SC, Lee County, SC, Marion County, SC, Newberry County, SC, Oconee County, SC, Pickens County, SC, Richland County, SC, Spartanburg County, SC, Sumter County, SC, Union County, SC, Williamsburg County, SC, York County, SC, Unicoi County, TN

The radar

The Greer radar (KGSP), 101 km from the middle of the area, began a volume at 19:51 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, 7.9 hours before the alert went out and 175 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: 32 J/kg
Mixed-layer CIN: -462 J/kg
Mixed-layer LCL: 1254 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -66 m²/s²
0-3 km storm-relative helicity: -49 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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Nearby

Mesoscale Discussions in South Carolina, 2004 Mesoscale Discussions in North Carolina, 2004 Mesoscale Discussions in Georgia, 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.