Alert archive / South Carolina / Lake Wind Advisories in 2020

Lake Wind Advisory 1, NWS Columbia, SC

January 3, 202017 counties in South Carolina; 5 counties in Georgia

NWS Columbia, SC issued this lake wind advisory at Jan 3, 2020, 1:28 PM EST for 17 counties in South Carolina; 5 counties in Georgia. It took effect at Jan 4, 2020, 7:00 AM EST. It was in force for 22 hr.

The area

The counties it named.

The facts

Issued: Jan 3, 2020, 1:28 PM EST (18:28 UTC)
In effect from: Jan 4, 2020, 7:00 AM EST
Expired: Jan 5, 2020, 4:55 AM EST
In force: 22 hr
Issued by: NWS Columbia, SC

All 22 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, Richland County, SC, Saluda County, SC, Sumter County, SC

The radar

The Columbia radar (KCAE), 23 km from the middle of the area, began a volume at 18:28 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, 6.5 hours before the alert went out and 163 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: 3 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 826 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 256 m²/s²
0-3 km storm-relative helicity: 228 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 Jan 3, 12:55 PM EST, 33 minutes earlier.

Area forecast discussion, Jan 3, 12:55 PM EST, 33 minutes before

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Hazardous weather outlook, Jan 3, 11:05 AM EST, 2 hours 23 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
Jan 3, 3:05 PM EST	Special Weather Statement	CAE	McCormick	10 min
Jan 3, 3:46 PM EST	Special Weather Statement	CAE	Newberry	44 min
Jan 3, 4:37 PM EST	Special Weather Statement	CAE	Aiken	38 min
Jan 3, 5:15 PM EST	Special Weather Statement	CAE	Aiken, Edgefield, Saluda	45 min
Jan 3, 6:15 PM EST	Special Weather Statement	CAE	Aiken	45 min
Jan 3, 6:19 PM EST	Severe Thunderstorm Warning	CAE	Aiken, Lexington	41 min
Jan 3, 6:49 PM EST	Special Weather Statement	CAE	Barnwell	41 min
Jan 3, 6:52 PM EST	Special Weather Statement	CAE	Lexington, Richland, Sumter	38 min
Jan 3, 4:24 PM EST	Special Weather Statement	CAE	Columbia, McDuffie, Richmond	51 min
Jan 3, 5:27 PM EST	Special Weather Statement	CAE	Burke, Richmond	48 min
Jan 3, 6:02 PM EST	Special Weather Statement	CAE	Burke	43 min
Jan 3, 6:17 PM EST	Severe Thunderstorm Warning	CAE	Burke, Richmond	43 min

Nearby

Lake Wind Advisories in South Carolina, 2020 Lake Wind Advisories in Georgia, 2020 Every lake wind advisory in 2020

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.