Alert archive / South Carolina / Heat Advisories in 2023

Heat Advisory 2, NWS Columbia, SC

August 6, 202318 counties in South Carolina; 5 counties in Georgia

NWS Columbia, SC issued this heat advisory at Aug 6, 2023, 3:18 PM EDT for 18 counties in South Carolina; 5 counties in Georgia. It took effect at Aug 7, 2023, 11:00 AM EDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Aug 6, 2023, 3:18 PM EDT (19:18 UTC)
In effect from: Aug 7, 2023, 11:00 AM EDT
Expired: Aug 7, 2023, 7:00 PM EDT
In force: 8 hr
Issued by: NWS Columbia, SC

All 23 counties

Burke County, GA, Columbia County, GA, Lincoln County, GA, McDuffie County, GA, Richmond County, GA, Aiken County, SC, Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Chesterfield County, SC, Clarendon County, SC, Edgefield County, SC, Fairfield County, SC, Kershaw County, SC, Lancaster County, SC, Lee County, SC, Lexington County, SC, McCormick County, SC, Newberry County, SC, Orangeburg County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC

The radar

The Columbia radar (KCAE), 22 km from the middle of the area, began a volume at 19:19 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.3 hours before the alert went out and 300 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: 1698 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 936 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 78 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Columbia, SC wrote its last area forecast discussion before this heat advisory went out at Aug 6, 2:07 PM EDT, 1 hour 11 minutes earlier.

Area forecast discussion, Aug 6, 2:07 PM EDT, 1 hour 11 minutes before

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Hazardous weather outlook, Aug 6, 4:17 AM EDT, 11 hours 1 minute before

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In the hours before

Special weather statement, Aug 6, 3:02 PM EDT, 16 minutes before

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The office that day

Everything else NWS Columbia, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 6, 3:02 PM EDT	Special Weather Statement	CAE	McCormick	43 min
Aug 6, 3:30 PM EDT	Special Weather Statement	CAE	Edgefield	30 min
Aug 6, 3:49 PM EDT	Special Weather Statement	CAE	Fairfield, Newberry	26 min
Aug 6, 4:02 PM EDT	Special Weather Statement	CAE	Aiken	43 min
Aug 6, 4:17 PM EDT	Special Weather Statement	CAE	Lexington	43 min
Aug 6, 4:46 PM EDT	Special Weather Statement	CAE	Aiken, Lexington	44 min
Aug 6, 4:51 PM EDT	Special Weather Statement	CAE	Barnwell	39 min
Aug 6, 5:14 PM EDT	Areal Flood Advisory	CAE	Lexington, Richland	106 min
Aug 6, 5:30 PM EDT	Special Weather Statement	CAE	Calhoun, Richland	45 min
Aug 6, 5:32 PM EDT	Special Weather Statement	CAE	Barnwell	43 min
Aug 6, 5:44 PM EDT	Flash Flood Warning	CAE	Lexington, Richland	58 min

Nearby

Heat Advisories in South Carolina, 2023 Heat Advisories in Georgia, 2023 Every heat advisory in 2023

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.