Alert archive / Tennessee / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 271, NWS Nashville, TN

August 24, 1999Cumberland County, Putnam County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Aug 24, 1999, 10:53 PM CDT for Cumberland County, Putnam County, Tennessee. It was in force for 37 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: Aug 24, 1999, 10:53 PM CDT (03:53 UTC)
Expired: Aug 24, 1999, 11:30 PM CDT
In force: 37 min
Issued by: NWS Nashville, TN
Area: Whole counties

Counties Cumberland County, TN, Putnam County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 3.9 hours before the alert went out and 122 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: 1977 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 1091 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 71 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.9

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 Nashville, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 24, 8:30 PM CDT, 2 hours 23 minutes earlier.

Area forecast discussion, Aug 24, 8:30 PM CDT, 2 hours 23 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
830 PM CDT TUE AUG 24 1999

LATEST SURFACE ANALYSIS SHOWING WEAK LOW BNA/BWG VICINITY WITH
TRAILING FRONTAL BOUNDARY NEAR MKL TO N OF MEM. DEWPOINTS NW
OF FRONT NOW IN 50S AND ADDITIONALLY MID/UPR LEVEL DRYING SEEN
NICELY ON WV LOOPS. RADAR SCOPES CLEAR BEHIND MID STATE CONVECTION
AND EXPECT PRECIP TO MOVE E AND OUT OF AREA OVERNIGHT AS DRYER
AIR PUSHES IN.  WILL MAKE CHANGES TO ZONES BUT MAINLY TO CLEAN
UP BASED ON PROGRESSION OF PRECIP. TEMPS SEEM OKAY FOR NOW.
07

In the hours before

Local storm report, Aug 24, 10:06 PM CDT, 47 minutes before

<!doctype html>
<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.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Local storm report, Aug 24, 10:06 PM CDT, 47 minutes before

<!doctype html>
<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.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

Everything else NWS Nashville, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 24, 7:02 PM CDT	Flash Flood Warning	OHX	Clay	118 min
Aug 24, 7:08 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Overton, Pickett	67 min
Aug 24, 7:20 PM CDT	Severe Thunderstorm Warning	OHX	Sumner, Trousdale, Wilson	40 min
Aug 24, 7:20 PM CDT	Severe Thunderstorm Warning	OHX	Macon	40 min
Aug 24, 8:58 PM CDT	Flash Flood Warning	OHX	Clay, Jackson, Overton, Pickett, Putnam	3 hr
Aug 24, 8:58 PM CDT	Flash Flood Warning	OHX	Smith	3 hr

Nearby

Severe Thunderstorm Warnings in Tennessee, 1999 Every severe thunderstorm warning in 1999

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.