Alert archive / South Carolina / Dense Fog Advisories in 2012

Dense Fog Advisory 5, NWS Columbia, SC

January 26, 201215 counties in South Carolina; 5 counties in Georgia

NWS Columbia, SC issued this dense fog advisory at Jan 26, 2012, 7:47 AM EST for 15 counties in South Carolina; 5 counties in Georgia. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Jan 26, 2012, 7:47 AM EST (12:47 UTC)
Expired: Jan 26, 2012, 11:00 AM EST
In force: 3 hr
Issued by: NWS Columbia, SC

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, Clarendon County, SC, Edgefield County, SC, Fairfield County, SC, Kershaw County, SC, Lee County, SC, Lexington County, SC, McCormick County, SC, Newberry County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC

The radar

The Columbia radar (KCAE), 35 km from the middle of the area, began a volume at 12:53 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, 0.8 hours before the alert went out and 288 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 555 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 254 m²/s²
0-3 km storm-relative helicity: 271 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 dense fog 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 dense fog advisory went out at Jan 26, 7:45 AM EST, 2 minutes earlier.

Area forecast discussion, Jan 26, 7:45 AM EST, 2 minutes before

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Hazardous weather outlook, Jan 26, 4:19 AM EST, 3 hours 28 minutes before

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Nearby

Dense Fog Advisories in South Carolina, 2012 Dense Fog Advisories in Georgia, 2012 Every dense fog advisory in 2012

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.