Alert archive / Georgia / Winter Weather Advisories in 2015

Winter Weather Advisory 4, NWS Atlanta, GA

February 18, 201517 counties in Georgia

NWS Atlanta, GA issued this winter weather advisory at Feb 18, 2015, 7:58 AM EST for 17 counties in Georgia. It was in force for 20 hr.

The area

The counties it named.

The facts

Issued: Feb 18, 2015, 7:58 AM EST (12:58 UTC)
Expired: Feb 19, 2015, 3:33 AM EST
In force: 20 hr
Issued by: NWS Atlanta, GA

Counties Banks County, GA, Catoosa County, GA, Chattooga County, GA, Dade County, GA, Dawson County, GA, Fannin County, GA, Gilmer County, GA, Gordon County, GA, Hall County, GA, Lumpkin County, GA, Murray County, GA, Pickens County, GA, Towns County, GA, Union County, GA, Walker County, GA, White County, GA, Whitfield County, GA

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 1.0 hours before the alert went out and 143 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: 1322 m above ground
0-6 km bulk shear: 78 kt
0-1 km storm-relative helicity: -25 m²/s²
0-3 km storm-relative helicity: 47 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 Atlanta, GA wrote its last area forecast discussion before this winter weather advisory went out at Feb 18, 6:05 AM EST, 1 hour 53 minutes earlier.

Area forecast discussion, Feb 18, 6:05 AM EST, 1 hour 53 minutes before

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Hazardous weather outlook, Feb 18, 4:05 AM EST, 3 hours 53 minutes before

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  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</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.
      </p>
      <p class="small" id="detail">
        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 Atlanta, GA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 18, 2:31 AM EST	Wind Chill Warning	FFC	Fannin, Gilmer, Lumpkin, Murray, Towns, Union and 1 more	52 hr
Feb 18, 2:31 AM EST	Wind Chill Advisory	FFC	Baldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 83 more	35 hr
Feb 18, 2:35 AM EST	Wind Advisory	FFC	Baldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 90 more	16 hr
Feb 18, 3:02 PM EST	Winter Storm Watch	FFC	Banks, Bartow, Catoosa, Chattooga, Cherokee, Dade and 15 more	25 hr

Nearby

Winter Weather Advisories in Georgia, 2015 Every winter weather advisory in 2015

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.