Alert archive / Tennessee / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 92, NWS Morristown, TN

June 15, 2010McMinn County, Monroe County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Jun 15, 2010, 2:48 PM EDT for McMinn County, Monroe County, Tennessee. It was in force for 48 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 15, 2010, 2:48 PM EDT (18:48 UTC)
Expired: Jun 15, 2010, 3:36 PM EDT
In force: 48 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon

Counties McMinn County, TN, Monroe County, TN

The radar

The Knoxville radar (KMRX), 124 km from the middle of the area, began a volume at 18:48 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 12:00Z, 6.8 hours before the alert went out and 210 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: 2500 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 911 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -46 m²/s²
0-3 km storm-relative helicity: 33 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 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 Jun 15, 1:16 PM EDT, 1 hour 32 minutes earlier.

Area forecast discussion, Jun 15, 1:16 PM EDT, 1 hour 32 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MORRISTOWN TN
116 PM EDT TUE JUN 15 2010

.AVIATION...CONVECTION ACTIVE ON THE HIGHER TERRAIN FEATURES THIS
AFTERNOON AND WITH OUTFLOW SHOWERS AND THUNDERSTORMS HAVE A GOOD
CHANCE OF DRIFTING INTO THE GREAT VALLEY AND ACROSS THE TERMINALS.
BEST LIKLIEHOOD APPEARS TO BE AT CHA AND TYS BUT CERTAINLY IS
ALSO POSSIBLE AT TRI. DECIDED TO USE A TEMPO GROUP FOR CONVECTION
AT CHA AND TYS FOR NOW. ACTION QUIETS DOWN AGAIN TONIGHT WITH SOME
IFR/LIFR CONDITIONS DUE TO THE HIGH LOW LEVEL MOISTURE CONTENT WITH
SATURATION AT TRI TOWARD DAYBREAK. CONVECTION SHOULD GET GOING
AGAIN LATE MORNING AROUND THE TERMINALS ON WEDNESDAY WITH NICE
MOISTURE/INSTABILITY AXIS AHEAD OF GREAT LAKES/OHIO VALLEY SHORTWAVE
TROF.

&&

.MRX WATCHES/WARNINGS/ADVISORIES...
NC...NONE.
TN...NONE.
VA...NONE.

&&

Hazardous weather outlook, Jun 15, 5:00 AM EDT, 9 hours 48 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MORRISTOWN TN
500 AM EDT TUE JUN 15 2010

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-161000-
CHEROKEE-CLAY-SCOTT TN-CAMPBELL-CLAIBORNE-HANCOCK-HAWKINS-
SULLIVAN-JOHNSON-MORGAN-ANDERSON-UNION-GRAINGER-HAMBLEN-
NORTHWEST COCKE-COCKE SMOKY MOUNTAINS-NORTHWEST GREENE-
SOUTHEAST GREENE-WASHINGTON TN-UNICOI-NORTHWEST CARTER-
SOUTHEAST CARTER-ROANE-LOUDON-KNOX-JEFFERSON-NW BLOUNT-
BLOUNT SMOKY MOUNTAINS-NORTH SEVIER-SEVIER SMOKY MOUNTAINS-
SEQUATCHIE-BLEDSOE-RHEA-MEIGS-MCMINN-NORTHWEST MONROE-
SOUTHEAST MONROE-MARION-HAMILTON-BRADLEY-WEST POLK-EAST POLK-LEE-
WISE-SCOTT-RUSSELL-WASHINGTON-
500 AM EDT (400 AM CDT) TUE JUN 15 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST TENNESSEE...SOUTHWEST
VIRGINIA AND EXTREME SOUTHWEST NORTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT

A HOT AND VERY HUMID AIR MASS WILL HELP TO TRIGGER SCATTERED SHOWERS
AND THUNDERSTORMS TODAY...WITH A FEW ISOLATED STORMS BECOMING STRONG
TO SEVERE THIS AFTERNOON AND EVENING. THE MAIN THREATS WILL BE THE
POSSIBILITY OF DAMAGING WINDS...LOCALLY HEAVY RAINFALL...AND CLOUD
TO GROUND LIGHTNING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

A TYPICAL SUMMERTIME PATTERN WILL CONTINUE ACROSS THE REGION THIS
WEEK...WITH A FEW ISOLATED STRONG TO SEVERE STORMS POSSIBLE EACH
DAY. THE MAIN THREATS THROUGHOUT THE PERIOD WILL CONTINUE TO BE THE
POSSIBILITY OF DAMAGING WINDS...LOCALLY HEAVY RAINFALL...AND CLOUD
TO GROUND LIGHTNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED DUE TO THE ISOLATED NATURE OF
THE EXPECTED SEVERE THREAT.

DMG

In the hours before

Local storm report, Jun 15, 1:32 PM EDT, 1 hour 16 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>

Special weather statement, Jun 15, 2:03 PM EDT, 45 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>

Special weather statement, Jun 15, 2:18 PM EDT, 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>

Special weather statement, Jun 15, 2:29 PM EDT, 19 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, Jun 15, 2:43 PM EDT, 5 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, Jun 15, 2:47 PM EDT, 1 minute 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 Morristown, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 15, 12:26 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Morgan, Roane	64 min
Jun 15, 1:07 PM EDT	Severe Thunderstorm Warning	MRX	Meigs, Rhea, Roane	53 min
Jun 15, 1:13 PM EDT	Areal Flood Advisory	MRX	Morgan, Roane	2 hr
Jun 15, 1:14 PM EDT	Severe Thunderstorm Warning	MRX	Hamilton	61 min
Jun 15, 1:30 PM EDT	Areal Flood Advisory	MRX	Hamilton	57 min
Jun 15, 1:31 PM EDT	Severe Thunderstorm Warning	MRX	Bradley, McMinn, Meigs, Rhea	59 min
Jun 15, 2:03 PM EDT	Areal Flood Advisory	MRX	Meigs, Rhea, Roane	66 min
Jun 15, 2:09 PM EDT	Areal Flood Advisory	MRX	Anderson, Campbell	52 min
Jun 15, 2:33 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Blount, Knox, Loudon, McMinn, Monroe and 2 more	57 min
Jun 15, 3:14 PM EDT	Severe Thunderstorm Warning	MRX	Blount, Grainger, Jefferson, Knox, Sevier, Union	61 min
Jun 15, 3:18 PM EDT	Severe Thunderstorm Warning	MRX	Blount, Monroe	57 min
Jun 15, 4:00 PM EDT	Severe Thunderstorm Warning	MRX	Blount, Cocke, Hamblen, Jefferson, Sevier	60 min
Jun 15, 4:05 PM EDT	Severe Thunderstorm Warning	MRX	Marion	55 min
Jun 15, 4:21 PM EDT	Areal Flood Advisory	MRX	Bledsoe	3 hr
Jun 15, 4:29 PM EDT	Severe Thunderstorm Warning	MRX	Hawkins, Sullivan	46 min
Jun 15, 4:50 PM EDT	Severe Thunderstorm Warning	MRX	Polk	39 min
Jun 15, 4:52 PM EDT	Severe Thunderstorm Warning	MRX	Hamilton, Marion, Sequatchie	53 min
Jun 15, 4:58 PM EDT	Severe Thunderstorm Warning	MRX	Bledsoe	62 min
Jun 15, 5:04 PM EDT	Areal Flood Advisory	MRX	Hancock, Hawkins	116 min
Jun 15, 5:28 PM EDT	Severe Thunderstorm Warning	MRX	Bradley, Hamilton, McMinn, Meigs, Rhea	62 min
Jun 15, 5:32 PM EDT	Severe Thunderstorm Warning	MRX	Carter, Greene, Sullivan, Washington	43 min
Jun 15, 5:38 PM EDT	Areal Flood Advisory	MRX	Hamilton	112 min
Jun 15, 5:46 PM EDT	Flash Flood Warning	MRX	Bledsoe	3 hr
Jun 15, 5:56 PM EDT	Severe Thunderstorm Warning	MRX	Polk	64 min
Jun 15, 6:16 PM EDT	Severe Thunderstorm Warning	MRX	Loudon, McMinn, Meigs, Monroe, Rhea, Roane	59 min
Jun 15, 2:56 PM EDT	Severe Thunderstorm Warning	MRX	Russell, Scott, Washington	64 min
Jun 15, 2:59 PM EDT	Areal Flood Advisory	MRX	Russell, Washington	2 hr
Jun 15, 5:27 PM EDT	Areal Flood Advisory	MRX	Russell, Washington, Wise	2 hr
Jun 15, 6:09 PM EDT	Flash Flood Warning	MRX	Russell	111 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2010 Every severe thunderstorm warning in 2010

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.