Alert archive / Tennessee / Areal Flood Advisories in 2012

Areal Flood Advisory 13, NWS Nashville, TN

May 22, 2012Fentress County, Tennessee

NWS Nashville, TN issued this areal flood advisory at May 22, 2012, 1:34 PM CDT for Fentress County, Tennessee. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: May 22, 2012, 1:34 PM CDT (18:34 UTC)
Expired: May 22, 2012, 4:30 PM CDT
In force: 3 hr
Issued by: NWS Nashville, TN
Area: Storm-based polygon

County Fentress County, TN

The radar

The Knoxville radar (KMRX), 139 km from the middle of the area, began a volume at 18:33 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 12:00Z, 6.6 hours before the alert went out and 337 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: 40 J/kg
Mixed-layer CIN: -184 J/kg
Mixed-layer LCL: 1072 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -47 m²/s²
0-3 km storm-relative helicity: 0 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 areal flood 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 areal flood advisory went out at May 22, 5:49 AM CDT, 7 hours 45 minutes earlier.

Area forecast discussion, May 22, 5:49 AM CDT, 7 hours 45 minutes before

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Hazardous weather outlook, May 22, 5:42 AM CDT, 7 hours 52 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.
      </p>
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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
May 21, 7:06 PM CDT	Areal Flood Advisory	OHX	Cumberland	114 min
May 21, 7:45 PM CDT	Special Weather Statement	OHX	Lawrence	45 min
May 21, 7:58 PM CDT	Special Weather Statement	OHX	Lawrence	47 min
May 21, 8:27 PM CDT	Special Weather Statement	OHX	Giles, Lawrence	63 min
May 21, 9:06 PM CDT	Areal Flood Advisory	OHX	Lawrence	114 min
May 22, 6:06 PM CDT	Special Weather Statement	OHX	Overton	54 min
May 22, 6:14 PM CDT	Areal Flood Advisory	OHX	Overton	3 hr
May 22, 6:15 PM CDT	Areal Flood Advisory	OHX	Grundy	35 min

Nearby

Areal Flood Advisories in Tennessee, 2012 Every areal flood 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.