Alert archive / Tennessee / Special Weather Statements in 2021

Special Weather Statement, NWS Morristown, TN

June 12, 2021Campbell County, Scott County, Tennessee

NWS Morristown, TN issued this special weather statement at Jun 12, 2021, 5:47 PM EDT for Campbell County, Scott County, Tennessee. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 12, 2021, 5:47 PM EDT (21:47 UTC)
Expired: Jun 12, 2021, 6:30 PM EDT
In force: 43 min
Issued by: NWS Morristown, TN

Counties Campbell County, TN, Scott County, TN

The radar

The Knoxville radar (KMRX), 107 km from the middle of the area, began a volume at 21:50 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, 9.8 hours before the alert went out and 184 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: 1463 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 1034 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jun 12, 5:46 PM EDT, 1 minute earlier.

Area forecast discussion, Jun 12, 5:46 PM EDT, 1 minute before

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  <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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Hazardous weather outlook, Jun 12, 3:12 AM EDT, 14 hours 35 minutes before

Hazardous Weather Outlook
National Weather Service Morristown TN
312 AM EDT Sat Jun 12 2021

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-130715-
Cherokee-Clay-Scott-Campbell-Claiborne-Hancock-Hawkins-Sullivan-
Johnson-Morgan-Anderson-Union-Grainger-Hamblen-Northwest Cocke-
Cocke Smoky Mountains-Northwest Greene-Southeast Greene-
Washington-Unicoi-Northwest Carter-Southeast Carter-Roane-Loudon-
Knox-Jefferson-Northwest 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-Russell-
312 AM EDT Sat Jun 12 2021 /212 AM CDT Sat Jun 12 2021/

This Hazardous Weather Outlook is for portions of southwest North
Carolina...east Tennessee and southwest Virginia.

.DAY ONE...Today and Tonight

Isolated showers and thunderstorms will be possible for parts of
the day today. A rogue storm could become strong to severe, but
the threat of widespread severe weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not needed at this time.

In the hours before

Special weather statement, Jun 12, 5:47 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Morristown TN
547 PM EDT Sat Jun 12 2021

TNZ012-013-035-122230-
Scott TN-Campbell TN-Morgan TN-
547 PM EDT Sat Jun 12 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN MORGAN...CAMPBELL AND
SCOTT COUNTIES UNTIL 630 PM EDT...

At 546 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from Wofford to near Oneida to Burfield. Movement
was south at 40 mph.

Pea size hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
La Follette, Oneida, Jacksboro, Huntsville, Helenwood, Jellico,
Caryville, Winfield, Sunbright and Rugby.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3659 8401 3640 8397 3617 8447 3625 8489
      3629 8487 3630 8480 3633 8477 3634 8474
      3637 8472 3637 8470 3640 8466 3660 8478
TIME...MOT...LOC 2146Z 002DEG 43KT 3680 8414 3654 8447 3671 8480

BW

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 9:03 PM EDT	Special Weather Statement	MRX	Polk	42 min
Jun 12, 1:53 PM EDT	Areal Flood Advisory	MRX	Greene	3 hr
Jun 12, 6:26 PM EDT	Special Weather Statement	MRX	Morgan	34 min
Jun 12, 7:04 PM EDT	Areal Flood Advisory	MRX	Scott	116 min
Jun 12, 7:14 PM EDT	Special Weather Statement	MRX	Bledsoe, Meigs, Rhea	46 min
Jun 12, 7:56 PM EDT	Special Weather Statement	MRX	Bledsoe, Bradley	49 min

Nearby

Special Weather Statements in Tennessee, 2021 Every special weather statement in 2021

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.