Alert archive / South Carolina / Lake Wind Advisories in 2011

Lake Wind Advisory 12, NWS Columbia, SC

March 9, 201116 counties in South Carolina; 5 counties in Georgia

NWS Columbia, SC issued this lake wind advisory at Mar 9, 2011, 4:09 AM EST for 16 counties in South Carolina; 5 counties in Georgia. It took effect at Mar 9, 2011, 1:00 PM EST. It was in force for 35 hr.

The area

The counties it named.

The facts

Issued: Mar 9, 2011, 4:09 AM EST (09:09 UTC)
In effect from: Mar 9, 2011, 1:00 PM EST
Expired: Mar 10, 2011, 11:30 PM EST
In force: 35 hr
Issued by: NWS Columbia, SC

All 21 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, 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), 28 km from the middle of the area, began a volume at 09:07 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 00:00Z, 9.2 hours before the alert went out and 286 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: 2670 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: 325 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 lake wind 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 lake wind advisory went out at Mar 9, 3:56 AM EST, 13 minutes earlier.

Area forecast discussion, Mar 9, 3:56 AM EST, 13 minutes before

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Hazardous weather outlook, Mar 8, 1:41 PM EST, 14 hours 28 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
Mar 9, 10:12 AM EST	River Flood Watch	CAE	Calhoun, Lexington, Richland	11 hr
Mar 9, 3:18 PM EST	Severe Thunderstorm Warning	CAE	Aiken, Edgefield, McCormick, Saluda	57 min
Mar 9, 3:39 PM EST	Severe Thunderstorm Warning	CAE	Aiken, Barnwell	66 min
Mar 9, 4:14 PM EST	Severe Thunderstorm Warning	CAE	Aiken, Edgefield, Lexington, Saluda	61 min

Nearby

Lake Wind Advisories in South Carolina, 2011 Lake Wind Advisories in Georgia, 2011 Every lake wind advisory in 2011

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.