Alert archive / Tennessee / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 218, NWS Memphis, TN

April 20, 2006Hardin County, McNairy County, Tennessee

NWS Memphis, TN issued this severe thunderstorm warning at Apr 20, 2006, 11:58 PM CDT for Hardin County, McNairy County, Tennessee. It was in force for 47 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: Apr 20, 2006, 11:58 PM CDT (04:58 UTC)
Expired: Apr 21, 2006, 12:45 AM CDT
In force: 47 min
Issued by: NWS Memphis, TN
Area: Counties, with a storm outline in the text

Counties Hardin County, TN, McNairy County, TN

The radar

The Memphis radar (KNQA), 137 km from the middle of the area, began a volume at 04:58 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 20, 10:00 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 5.0 hours before the alert went out and 149 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: 512 J/kg
Mixed-layer CIN: -90 J/kg
Mixed-layer LCL: 1181 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 130 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

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 Apr 20, 9:31 PM CDT, 2 hours 27 minutes earlier.

Area forecast discussion, Apr 20, 9:31 PM CDT, 2 hours 27 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>

Hazardous weather outlook, Apr 20, 10:15 PM CDT, 1 hour 43 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MEMPHIS TN
1015 PM CDT THU APR 20 2006

ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115-
MSZ001>017-020>024-TNZ001>004-019>021-048>055-088>092-212300-
ALCORN-BENTON(MS)-CALHOUN-CARROLL-CHESTER-CHICKASAW-CLAY-COAHOMA-
CRAIGHEAD-CRITTENDEN-CROCKETT-CROSS-DESOTO-DECATUR-DUNKLIN-DYER-
FAYETTE-GIBSON-GREENE-HARDEMAN-HARDIN-HAYWOOD-HENDERSON-HENRY-
ITAWAMBA-LAFAYETTE-LAKE-LAUDERDALE-LAWRENCE-LEE(AR)-LEE(MS)-
MADISON-MARSHALL-MCNAIRY-MISSISSIPPI-MONROE-OBION-PANOLA-PEMISCOT-
PHILLIPS-POINSETT-PONTOTOC-PRENTISS-QUITMAN-RANDOLPH-SHELBY-
ST. FRANCIS-TALLAHATCHIE-TATE-TIPPAH-TIPTON-TISHOMINGO-TUNICA-
UNION-WEAKLEY-YALOBUSHA-
1015 PM CDT THU APR 20 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST ARKANSAS...
THE MISSOURI BOOTHEEL...NORTH MISSISSIPPI...AND WEST TENNESSEE.

.DAY ONE...TONIGHT

SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP OVER THE
MID-SOUTH TONIGHT. SOME THUNDERSTORMS COULD BE SEVERE ALONG AND
SOUTH OF A HARRISBURG ARKANSAS TO DYERSBURG TENNESSEE TO PARIS
TENNESSEE LINE...WITH LARGE HAIL AND DAMAGING WINDS BEING THE
PRIMARY THREATS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

AN AREA OF LOW PRESSURE WILL MOVE ACROSS THE MID-SOUTH ON FRIDAY.
AREAS ALONG AND SOUTH OF INTERSTATE 40 WILL HAVE ADDITIONAL
POTENTIAL FOR SEVERE THUNDERSTORMS...WITH LARGE HAIL AND DAMAGING
WINDS AGAIN THE PRIMARY THREAT.

ANOTHER COLD FRONT WILL SLOWLY MOVE ACROSS THE AREA NEXT MONDAY
EVENING THROUGH WEDNESDAY MORNING. THE ATMOSPHERE WILL AGAIN
BECOME UNSTABLE WITH SLIGHT CHANCES FOR SEVERE WEATHER DURING THIS
TIME PERIOD.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF STORM SPOTTERS...EMERGENCY MANAGEMENT...AND LAW
ENFORCEMENT OFFICIALS IN SUPPORT OF SEVERE WEATHER WILL BE POSSIBLE
TONIGHT AND AGAIN ON FRIDAY ALONG AND SOUTH OF INTERSTATE 40.

SJM

In the hours before

Local storm report, Apr 20, 11:24 PM CDT, 34 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, Apr 20, 11:28 PM CDT, 30 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, Apr 20, 11:34 PM CDT, 24 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, Apr 20, 11:43 PM CDT, 15 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, Apr 20, 11:45 PM CDT, 13 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, Apr 20, 11:50 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MEMPHIS TN
1150 PM CDT THU APR 20 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1023 PM     HAIL             TOONE                   35.35N 88.95W
04/20/2006  M1.00 INCH       HARDEMAN           TN   LAW ENFORCEMENT

1044 PM     HAIL             WHITEVILLE              35.33N 89.15W
04/20/2006  M1.00 INCH       HARDEMAN           TN   LAW ENFORCEMENT

            ALONG HWY 100

1052 PM     HAIL             3 W MARKS               34.25N 90.33W
04/20/2006  M0.88 INCH       QUITMAN            MS   TRAINED SPOTTER

1107 PM     HAIL             1 S SILERTON            35.34N 88.82W
04/20/2006  M1.00 INCH       HARDEMAN           TN   TRAINED SPOTTER

1108 PM     HAIL             3 SW HENDERSON          35.41N 88.69W
04/20/2006  M1.75 INCH       CHESTER            TN   TRAINED SPOTTER

1110 PM     HAIL             3 S HENDERSON           35.40N 88.65W
04/20/2006  M1.00 INCH       CHESTER            TN   TRAINED SPOTTER

1113 PM     HAIL             MARKS                   34.25N 90.27W
04/20/2006  E0.75 INCH       QUITMAN            MS   AMATEUR RADIO

1114 PM     HAIL             FINGER                  35.35N 88.62W
04/20/2006  M1.75 INCH       MCNAIRY            TN   AMATEUR RADIO

1123 PM     HAIL             4 E HENDERSON           35.44N 88.58W
04/20/2006  M0.88 INCH       CHESTER            TN   TRAINED SPOTTER

1123 PM     HAIL             15 E COMO               34.51N 89.68W
04/20/2006  M0.88 INCH       LAFAYETTE          MS   TRAINED SPOTTER

1138 PM     HAIL             4 N BETHEL SPRINGS      35.29N 88.61W
04/20/2006  E1.00 INCH       MCNAIRY            TN   PUBLIC

1138 PM     HAIL             3 W BOLIVAR             35.26N 89.05W
04/20/2006  M1.00 INCH       HARDEMAN           TN   TRAINED SPOTTER

1141 PM     HAIL             BOLIVAR                 35.26N 89.00W
04/20/2006  M0.88 INCH       HARDEMAN           TN   AMATEUR RADIO

&&

DSV

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 20, 9:20 PM CDT	Severe Thunderstorm Warning	MEG	Fayette, Haywood	40 min
Apr 20, 9:58 PM CDT	Severe Thunderstorm Warning	MEG	Fayette, Hardeman	47 min
Apr 20, 10:41 PM CDT	Severe Thunderstorm Warning	MEG	Chester	49 min
Apr 20, 11:05 PM CDT	Severe Thunderstorm Warning	MEG	Hardeman	40 min
Apr 20, 11:18 PM CDT	Severe Thunderstorm Warning	MEG	Hardin, McNairy	42 min
Apr 20, 11:31 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Henderson	44 min
Apr 20, 11:38 PM CDT	Severe Thunderstorm Warning	MEG	Fayette	37 min
Apr 20, 11:43 PM CDT	Severe Thunderstorm Warning	MEG	Hardeman	32 min
Apr 21, 12:14 AM CDT	Severe Thunderstorm Warning	MEG	Decatur, Henderson	31 min
Apr 21, 12:44 AM CDT	Severe Thunderstorm Warning	MEG	Hardin, McNairy	46 min
Apr 21, 12:50 AM CDT	Severe Thunderstorm Warning	MEG	Fayette, Hardeman	25 min
Apr 21, 1:13 AM CDT	Severe Thunderstorm Warning	MEG	Decatur	24 min
Apr 21, 1:52 AM CDT	Severe Thunderstorm Warning	MEG	Chester, Hardin, Henderson, McNairy	23 min
Apr 21, 2:15 AM CDT	Severe Thunderstorm Warning	MEG	Hardin	30 min
Apr 21, 2:43 AM CDT	Flash Flood Warning	MEG	Chester, Hardeman, Hardin, McNairy	2 hr
Apr 21, 2:55 AM CDT	Flash Flood Warning	MEG	Henderson, Madison	2 hr
Apr 21, 3:21 AM CDT	Severe Thunderstorm Warning	MEG	Shelby	39 min
Apr 21, 3:27 AM CDT	Severe Thunderstorm Warning	MEG	Fayette	48 min
Apr 21, 5:56 AM CDT	Flash Flood Warning	MEG	Chester, Decatur, Fayette, Hardeman, Hardin, Henderson and 2 more	2 hr
Apr 20, 10:29 PM CDT	Severe Thunderstorm Warning	MEG	Panola	31 min
Apr 20, 10:39 PM CDT	Severe Thunderstorm Warning	MEG	Quitman	51 min
Apr 20, 11:06 PM CDT	Severe Thunderstorm Warning	MEG	Lafayette	39 min
Apr 20, 11:08 PM CDT	Severe Thunderstorm Warning	MEG	Panola	50 min
Apr 20, 11:37 PM CDT	Severe Thunderstorm Warning	MEG	Marshall	53 min
Apr 20, 11:44 PM CDT	Severe Thunderstorm Warning	MEG	Lafayette	31 min
Apr 21, 12:15 AM CDT	Severe Thunderstorm Warning	MEG	Benton	45 min
Apr 21, 3:29 AM CDT	Severe Thunderstorm Warning	MEG	Coahoma	46 min
Apr 21, 3:45 AM CDT	Severe Thunderstorm Warning	MEG	Tunica	45 min
Apr 21, 3:49 AM CDT	Severe Thunderstorm Warning	MEG	Quitman	56 min
Apr 21, 4:18 AM CDT	Severe Thunderstorm Warning	MEG	Panola	27 min
Apr 21, 4:27 AM CDT	Severe Thunderstorm Warning	MEG	Yalobusha	48 min
Apr 21, 4:28 AM CDT	Severe Thunderstorm Warning	MEG	Tallahatchie	50 min
Apr 21, 2:25 AM CDT	Severe Thunderstorm Warning	MEG	Phillips	65 min
Apr 21, 3:08 AM CDT	Severe Thunderstorm Warning	MEG	Lee, St. Francis	52 min
Apr 21, 3:30 AM CDT	Severe Thunderstorm Warning	MEG	Lee, Phillips	45 min
Apr 21, 3:35 AM CDT	Severe Thunderstorm Warning	MEG	Crittenden	40 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2006 Every severe thunderstorm warning in 2006

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.