Alert archive / Tennessee / Special Weather Statements in 2021

Special Weather Statement, NWS Nashville, TN

September 21, 2021Stewart County, Tennessee

NWS Nashville, TN issued this special weather statement at Sep 21, 2021, 4:40 PM CDT for Stewart 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: Sep 21, 2021, 4:40 PM CDT (21:40 UTC)
Expired: Sep 21, 2021, 5:30 PM CDT
In force: 50 min
Issued by: NWS Nashville, TN
Hail: 0.00 in
Wind: 30

County Stewart County, TN

The radar

The Ft Campbell radar (KHPX), 63 km from the middle of the area, began a volume at 21:42 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

Little Rock, AR (KLZK), launched 12:00Z, 9.7 hours before the alert went out and 261 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: 1459 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 745 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: -23 m²/s²
0-3 km storm-relative helicity: -40 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.9

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 Sep 21, 2:04 PM CDT, 2 hours 36 minutes earlier.

Area forecast discussion, Sep 21, 2:04 PM CDT, 2 hours 36 minutes before

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  <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, Sep 21, 3:34 AM CDT, 13 hours 6 minutes before

Hazardous Weather Outlook
National Weather Service Nashville TN
334 AM CDT Tue Sep 21 2021

TNZ005>011-023>034-056>066-075-077>080-093>095-221000-
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-
334 AM CDT Tue Sep 21 2021

This Hazardous Weather Outlook is for Middle Tennessee.

.DAY ONE...Today and tonight.

A strong cold front will move across the area from late this
afternoon through Wednesday morning, bringing another round of
showers and thunderstorms. Additional rainfall of 1/2 to 2 inches
with locally higher amounts are possible, which may lead to
localized flooding of roads and low lying areas. In addition, a few
strong storms with gusty winds over 40 mph are possible late this
afternoon and evening, mainly along and west of I-65.

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

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed later today due to the threat for
flooding and strong storms. Please relay any information about
observed severe weather to the NWS while following all local, state,
and CDC guidelines.

Shamburger

In the hours before

Special weather statement, Sep 21, 4:40 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Nashville TN
440 PM CDT Tue Sep 21 2021

TNZ005-212230-
Stewart TN-
440 PM CDT Tue Sep 21 2021

...A strong thunderstorm will impact portions of Stewart County
through 530 PM CDT...

At 439 PM CDT, Doppler radar was tracking a strong thunderstorm near
Paris Landing State Park, moving east at 20 mph.

HAZARD...Winds in excess of 30 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Dover, Big Rock, Cumberland City, Land Between The Lakes and Indian
Mound.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

&&

LAT...LON 3647 8805 3649 8806 3651 8804 3653 8803
      3662 8805 3667 8793 3666 8785 3663 8785
      3664 8770 3637 8765 3637 8772 3635 8774
      3635 8793 3636 8799 3645 8806
TIME...MOT...LOC 2139Z 255DEG 15KT 3646 8816

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH

Whitehead

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 20, 7:36 PM CDT	River Flood Advisory	OHX	Marshall	33 hr
Sep 20, 7:41 PM CDT	River Flood Advisory	OHX	Maury	27 min
Sep 20, 8:03 PM CDT	River Flood Warning	OHX	Hickman	4 days
Sep 20, 8:08 PM CDT	River Flood Warning	OHX	Maury	58 hr
Sep 21, 9:15 AM CDT	River Flood Advisory	OHX	Humphreys	12 hr
Sep 21, 11:52 AM CDT	River Flood Advisory	OHX	Bedford, Marshall	3 hr
Sep 21, 5:26 PM CDT	Special Weather Statement	OHX	Houston, Stewart	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.