Alert archive / North Carolina / Lake Wind Advisories in 2012

Lake Wind Advisory 7, NWS Greenville-Spartanburg, SC

March 4, 201217 counties in North Carolina; 4 counties in South Carolina; 6 counties in Georgia

NWS Greenville-Spartanburg, SC issued this lake wind advisory at Mar 4, 2012, 3:48 AM EST for 17 counties in North Carolina; 4 counties in South Carolina; 6 counties in Georgia. It took effect at Mar 4, 2012, 12:00 PM EST. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Mar 4, 2012, 3:48 AM EST (08:48 UTC)
In effect from: Mar 4, 2012, 12:00 PM EST
Expired: Mar 4, 2012, 7:52 PM EST
In force: 8 hr
Issued by: NWS Greenville-Spartanburg, SC

All 27 counties

Elbert County, GA, Franklin County, GA, Habersham County, GA, Hart County, GA, Rabun County, GA, Stephens County, GA, Avery County, NC, Buncombe County, NC, Burke County, NC, Caldwell County, NC, Graham 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, Rutherford County, NC, Swain County, NC, Transylvania County, NC, Yancey County, NC, Abbeville County, SC, Anderson County, SC, Greenwood County, SC, Laurens County, SC

The radar

The Greer radar (KGSP), 50 km from the middle of the area, began a volume at 08:47 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 00:00Z, 8.8 hours before the alert went out and 261 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: 2895 m above ground
0-6 km bulk shear: 107 kt
0-1 km storm-relative helicity: -135 m²/s²
0-3 km storm-relative helicity: -75 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 Greenville-Spartanburg, SC wrote its last area forecast discussion before this lake wind advisory went out at Mar 4, 3:33 AM EST, 15 minutes earlier.

Area forecast discussion, Mar 4, 3:33 AM EST, 15 minutes before

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Hazardous weather outlook, Mar 4, 3:47 AM EST, 1 minute before

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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 4, 2:47 PM EST	Winter Weather Advisory	GSP	Avery, Haywood, Madison, Mitchell, Swain, Yancey	21 hr

Nearby

Lake Wind Advisories in North Carolina, 2012 Lake Wind Advisories in Georgia, 2012 Lake Wind Advisories in South Carolina, 2012 Every lake wind 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.