Alert archive / Tennessee / Winter Weather Advisories in 2012

Winter Weather Advisory 4, NWS Nashville, TN

December 25, 201211 counties in Tennessee

NWS Nashville, TN issued this winter weather advisory at Dec 25, 2012, 3:11 PM CST for 11 counties in Tennessee. It took effect at Dec 26, 2012, 6:00 AM CST. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued: Dec 25, 2012, 3:11 PM CST (21:11 UTC)
In effect from: Dec 26, 2012, 6:00 AM CST
Expired: Dec 26, 2012, 11:39 AM CST
In force: 6 hr
Issued by: NWS Nashville, TN

Counties Benton County, TN, Cheatham County, TN, Davidson County, TN, Dickson County, TN, Houston County, TN, Humphreys County, TN, Macon County, TN, Montgomery County, TN, Robertson County, TN, Stewart County, TN, Sumner County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 9.2 hours before the alert went out and 59 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: 514 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 63 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 winter weather advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Nashville, TN wrote its last area forecast discussion before this winter weather advisory went out at Dec 24, 5:14 PM CST, 21 hours 57 minutes earlier.

Area forecast discussion, Dec 24, 5:14 PM CST, 21 hours 57 minutes before

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Hazardous weather outlook, Dec 24, 5:35 PM CST, 21 hours 36 minutes before

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</head>
<body>
  <main class="wrap">
    <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 Nashville, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 24, 6:25 PM CST	Dense Fog Advisory	OHX	Cannon, Clay, Coffee, Cumberland, DeKalb, Fentress and 8 more	14 hr
Dec 25, 11:04 AM CST	Wind Advisory	OHX	Benton, Cheatham, Davidson, Dickson, Houston, Humphreys and 6 more	24 hr

Nearby

Winter Weather Advisories in Tennessee, 2012 Every winter weather 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.