Alert archive / Tennessee / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 115, NWS Morristown, TN

May 2, 1997Polk County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at May 2, 1997, 8:39 PM EDT for Polk County, Tennessee. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 2, 1997, 8:39 PM EDT (00:39 UTC)
Expired
May 2, 1997, 9:15 PM EDT
In force
36 min
Issued by
NWS Morristown, TN
Area
Whole counties

County Polk County, TN

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 0.7 hours before the alert went out and 195 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 00:00Z on 1997-05-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 888 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 00:00Z on 1997-05-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 120 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
888 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1099 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
120 m²/s²
0-3 km storm-relative helicity
242 m²/s²
Significant tornado parameter
1.0
Supercell composite
5.1

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Morristown, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at May 2, 3:36 PM EDT, 5 hours 3 minutes earlier.

Area forecast discussion, May 2, 3:36 PM EDT, 5 hours 3 minutes before
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In the hours before

Special weather statement, May 2, 3:53 PM EDT, 4 hours 46 minutes before
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<html lang="en">
<head>
  <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.
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      <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 Morristown, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 2, 8:09 PM EDTTornado WarningMRXBradley51 min
May 3, 3:00 AM EDTFlash Flood WarningMRXCumberland, Fentress, Morgan, Scott6 hr
May 3, 3:00 AM EDTFlash Flood WarningMRXBradley, Hamilton, Meigs, Rhea6 hr
May 3, 3:00 AM EDTFlash Flood WarningMRXCampbell, Claiborne6 hr
May 3, 3:56 AM EDTFlash Flood WarningMRXAnderson, Grainger, Knox, Union5 hr
May 3, 3:56 AM EDTFlash Flood WarningMRXBlount, Loudon, Monroe, Sevier5 hr
May 3, 3:56 AM EDTFlash Flood WarningMRXMcMinn, Polk5 hr
May 3, 3:56 AM EDTFlash Flood WarningMRXRoane5 hr
May 3, 5:23 AM EDTFlash Flood WarningMRXCherokee5 hr

Nearby

Severe Thunderstorm Warnings in Tennessee, 1997Every severe thunderstorm warning in 1997

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.