Alert archive / Georgia / Winter Weather Advisories in 2016

Winter Weather Advisory 3, NWS Atlanta, GA

January 19, 201621 counties in Georgia

NWS Atlanta, GA issued this winter weather advisory at Jan 19, 2016, 2:44 PM EST for 21 counties in Georgia. It took effect at Jan 20, 2016, 7:00 AM EST. It was in force for 21 hr.

The area

The counties it named.

The facts

Issued: Jan 19, 2016, 2:44 PM EST (19:44 UTC)
In effect from: Jan 20, 2016, 7:00 AM EST
Expired: Jan 21, 2016, 4:17 AM EST
In force: 21 hr
Issued by: NWS Atlanta, GA

All 21 counties

Banks County, GA, Bartow County, GA, Catoosa County, GA, Chattooga County, GA, Cherokee County, GA, Dade County, GA, Dawson County, GA, Fannin County, GA, Floyd County, GA, Forsyth 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 radar

The Atlanta radar (KFFC), 135 km from the middle of the area, began a volume at 20:02 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

Nashville Metro, TN (KBNA), launched 12:00Z, 7.7 hours before the alert went out and 256 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: 1015 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 32 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 Jan 19, 11:01 AM EST, 3 hours 43 minutes earlier.

Area forecast discussion, Jan 19, 11:01 AM EST, 3 hours 43 minutes before

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Hazardous weather outlook, Jan 19, 10:43 AM EST, 4 hours 1 minute 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 Atlanta, GA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 18, 8:28 PM EST	Winter Storm Watch	FFC	Fannin, Gilmer, Lumpkin, Murray, Towns, Union and 2 more	9 hr
Jan 19, 5:11 AM EST	Winter Weather Advisory	FFC	Catoosa, Chattooga, Dade, Dawson, Fannin, Gilmer and 9 more	10 hr
Jan 19, 2:44 PM EST	Winter Storm Warning	FFC	Catoosa, Chattooga, Dade, Dawson, Fannin, Gilmer and 9 more	27 hr

Nearby

Winter Weather Advisories in Georgia, 2016 Every winter weather advisory in 2016

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.