Alert archive / Tennessee / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 234, NWS Memphis, TN

June 27, 2018Benton County, Henry County, Tennessee

NWS Memphis, TN issued this severe thunderstorm warning at Jun 27, 2018, 8:23 PM CDT for Benton County, Henry County, Tennessee. It was in force for 52 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
Jun 27, 2018, 8:23 PM CDT (01:23 UTC)
Expired
Jun 27, 2018, 9:15 PM CDT
In force
52 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Hail
1.5 in
Wind
60.0 mph

Counties Benton County, TN, Henry County, TN

The radar

The Ft Campbell radar (KHPX), 100 km from the middle of the area, began a volume at 01:24 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 00:00Z, 1.4 hours before the alert went out and 142 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, Nashville Metro, TN at 00:00Z on 2018-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1176 joules per kilogram.LCLLFCEL10008507005003002001001 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, Nashville Metro, TN at 00:00Z on 2018-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 133 square meters per square second.193958Sfc1 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
1176 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
1257 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
133 m²/s²
0-3 km storm-relative helicity
210 m²/s²
Significant tornado parameter
0.6
Supercell composite
6.0

Open this sounding in Storm Lab

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 Memphis, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 27, 6:34 PM CDT, 1 hour 49 minutes earlier.

Area forecast discussion, Jun 27, 6:34 PM CDT, 1 hour 49 minutes before
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Hazardous weather outlook, Jun 27, 3:39 AM CDT, 16 hours 44 minutes before
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<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.
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      <p id="message2">
        Please try again in a few minutes.
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In the hours before

Special weather statement, Jun 27, 2:46 PM CDT, 5 hours 37 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.
      </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 Memphis, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 28, 3:12 AM CDTHeat AdvisoryMEGBenton, Carroll, Crockett, Decatur, Dyer, Gibson and 6 more4 days
Jun 28, 10:49 AM CDTSpecial Weather StatementMEGBenton, Henry26 min
Jun 28, 11:06 AM CDTSevere Thunderstorm WarningMEGBenton, Carroll, Henry39 min
Jun 28, 11:25 AM CDTSpecial Weather StatementMEGHenry35 min
Jun 28, 11:31 AM CDTSevere Thunderstorm WarningMEGBenton, Henry, Weakley44 min
Jun 28, 11:36 AM CDTSevere Thunderstorm WarningMEGBenton, Carroll, Henry39 min
Jun 28, 11:42 AM CDTSpecial Weather StatementMEGCarroll33 min
Jun 28, 11:58 AM CDTSevere Thunderstorm WarningMEGCarroll, Henderson, Henry, Weakley28 min
Jun 28, 12:14 PM CDTSevere Thunderstorm WarningMEGBenton, Carroll, Decatur, Henry30 min
Jun 28, 2:29 PM CDTSpecial Weather StatementMEGWeakley31 min
Jun 28, 3:02 PM CDTSpecial Weather StatementMEGCarroll43 min
Jun 28, 4:12 PM CDTSpecial Weather StatementMEGChester, McNairy48 min
Jun 28, 4:27 PM CDTSevere Thunderstorm WarningMEGHardeman, McNairy33 min
Jun 28, 4:55 PM CDTSevere Thunderstorm WarningMEGMcNairy50 min
Jun 28, 5:01 PM CDTSevere Thunderstorm WarningMEGPrentiss44 min
Jun 28, 5:12 PM CDTSpecial Weather StatementMEGItawamba, Monroe48 min
Jun 28, 5:31 PM CDTSevere Thunderstorm WarningMEGAlcorn, Prentiss, Tippah29 min
Jun 28, 5:52 PM CDTSevere Thunderstorm WarningMEGItawamba, Lee, Prentiss53 min
Jun 28, 5:55 PM CDTSpecial Weather StatementMEGItawamba, Monroe50 min
Jun 28, 6:03 PM CDTFlash Flood WarningMEGItawamba, Monroe76 min
Jun 28, 6:31 PM CDTSevere Thunderstorm WarningMEGItawamba, Lee, Pontotoc, Union44 min
Jun 28, 6:44 PM CDTSpecial Weather StatementMEGMonroe46 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2018Every severe thunderstorm warning in 2018

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.