Alert archive / Tennessee / Special Weather Statements in 2021

Special Weather Statement, NWS Nashville, TN

October 5, 2021Lewis County, Tennessee

NWS Nashville, TN issued this special weather statement at Oct 5, 2021, 1:40 PM CDT for Lewis County, Tennessee. It was in force for 50 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: Oct 5, 2021, 1:40 PM CDT (18:40 UTC)
Expired: Oct 5, 2021, 2:30 PM CDT
In force: 50 min
Issued by: NWS Nashville, TN
Hail: 0.00 in
Wind: 40
Spout: Possible

County Lewis County, TN

The radar

The Nashville radar (KOHX), 107 km from the middle of the area, began a volume at 18:44 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, 6.7 hours before the alert went out and 94 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: 44 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 1048 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 19 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Nashville, TN wrote its last area forecast discussion before this special weather statement went out at Oct 5, 12:17 PM CDT, 1 hour 23 minutes earlier.

Area forecast discussion, Oct 5, 12:17 PM CDT, 1 hour 23 minutes before

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<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
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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, Oct 5, 5:02 AM CDT, 8 hours 38 minutes before

Hazardous Weather Outlook
National Weather Service Nashville TN
502 AM CDT Tue Oct 5 2021

TNZ005>011-023>034-056>066-075-077>080-093>095-061000-
Stewart-Montgomery-Robertson-Sumner-Macon-Clay-Pickett-Houston-
Humphreys-Dickson-Cheatham-Davidson-Wilson-Trousdale-Smith-Jackson-
Putnam-Overton-Fentress-Perry-Hickman-Lewis-Williamson-Maury-
Marshall-Rutherford-Cannon-De Kalb-White-Cumberland-Bedford-Coffee-
Warren-Grundy-Van Buren-Wayne-Lawrence-Giles-
502 AM CDT Tue Oct 5 2021

This Hazardous Weather Outlook is for Middle Tennessee.

.DAY ONE...Today and tonight.

Patchy dense fog possible through early morning hours today.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

JB Wright

In the hours before

Special weather statement, Oct 5, 1:40 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Nashville TN
140 PM CDT Tue Oct 5 2021

TNZ058-060-094-051930-
Lawrence TN-Lewis TN-Maury TN-
140 PM CDT Tue Oct 5 2021

...A strong thunderstorm will impact portions of eastern Lewis,
northeastern Lawrence and southwestern Maury Counties through 230 PM
CDT...

At 139 PM CDT, Doppler radar was tracking a strong thunderstorm with
some mid level rotation near Summertown, or 15 miles north of
Lawrenceburg, moving northwest at 10 mph.

HAZARD...Possible Landspouts and winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible. Gusty winds
         could knock down tree limbs and blow around unsecured
         objects.

Locations impacted include...
Mount Pleasant, Summertown, Gordonsburg and Hampshire.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3555 8753 3570 8725 3546 8712 3545 8715
      3544 8716 3543 8719 3543 8721 3539 8721
      3535 8730
TIME...MOT...LOC 1839Z 147DEG 8KT 3546 8726

LANDSPOUT...POSSIBLE
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

FB

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 5, 5:22 PM CDT	Special Weather Statement	OHX	Lawrence	23 min
Oct 5, 5:49 PM CDT	Special Weather Statement	OHX	Lewis	41 min
Oct 5, 5:55 PM CDT	Tornado Warning	OHX	Lawrence, Lewis, Wayne	35 min
Oct 5, 6:07 PM CDT	Areal Flood Advisory	OHX	Lawrence	3 hr

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.