Alert archive / Tennessee / Special Weather Statements in 2013

Special Weather Statement, NWS Nashville, TN

July 18, 2013Overton County, Tennessee

NWS Nashville, TN issued this special weather statement at Jul 18, 2013, 12:06 PM CDT for Overton County, Tennessee. It was in force for 30 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: Jul 18, 2013, 12:06 PM CDT (17:06 UTC)
Expired: Jul 18, 2013, 12:36 PM CDT
In force: 30 min
Issued by: NWS Nashville, TN

County Overton County, TN

The radar

The Nashville radar (KOHX), 110 km from the middle of the area, began a volume at 17:09 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, 5.1 hours before the alert went out and 115 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: 2137 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 914 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 77 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

<!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>

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 Jul 18, 10:05 AM CDT, 2 hours 1 minute earlier.

Area forecast discussion, Jul 18, 10:05 AM CDT, 2 hours 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>

Hazardous weather outlook, Jul 18, 5:22 AM CDT, 6 hours 44 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
522 AM CDT THU JUL 18 2013

TNZ005>011-022>034-056>066-075-077>080-093>095-191030-
STEWART-MONTGOMERY-ROBERTSON-SUMNER-MACON-CLAY-PICKETT-BENTON-
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-
522 AM CDT THU JUL 18 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

ROSE

In the hours before

Special weather statement, Jul 18, 12:06 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
1206 PM CDT THU JUL 18 2013

TNZ010-011-031>034-181736-
CLAY-FENTRESS-JACKSON-OVERTON-PICKETT-PUTNAM-
1206 PM CDT THU JUL 18 2013

...SIGNIFICANT WEATHER ADVISORY FOR CLAY...FENTRESS...JACKSON...
OVERTON...PICKETT AND PUTNAM COUNTIES...

AT 1206 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
TRACKING STRONG THUNDERSTORMS 9 MILES SOUTHEAST OF
LIVINGSTON...MOVING NORTHWEST AT 30 MPH.

SOME LOCATIONS IN THE PATH INCLUDE CRAWFORD...RICKMAN...LIVINGSTON
AND STANDING STONE STATE PARK.

SMALL HAIL...FREQUENT CLOUD TO GROUND LIGHTNING STRIKES...WINDS 40
TO 50 MPH...ALONG WITH BRIEF HEAVY RAINFALL ARE EXPECTED WITH THESE
STORMS.

LAT...LON 3621 8549 3640 8568 3653 8528 3631 8492
      3612 8516

31

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 1:02 PM CDT	Special Weather Statement	OHX	Clay, Fentress, Jackson, Overton, Pickett, Putnam	43 min
Jul 18, 1:40 PM CDT	Special Weather Statement	OHX	Smith	35 min
Jul 18, 1:47 PM CDT	Special Weather Statement	OHX	Benton, Dickson, Houston, Humphreys, Stewart	43 min
Jul 18, 1:52 PM CDT	Special Weather Statement	OHX	Clay, Overton, Pickett	23 min
Jul 18, 2:17 PM CDT	Special Weather Statement	OHX	Smith, Trousdale, Wilson	43 min
Jul 18, 2:51 PM CDT	Special Weather Statement	OHX	Davidson	39 min
Jul 18, 3:25 PM CDT	Special Weather Statement	OHX	Fentress, Overton, Pickett	50 min
Jul 18, 3:33 PM CDT	Special Weather Statement	OHX	Cheatham, Davidson, Dickson, Williamson	42 min
Jul 18, 3:57 PM CDT	Special Weather Statement	OHX	Benton, Houston, Humphreys, Montgomery, Stewart	48 min
Jul 18, 4:18 PM CDT	Special Weather Statement	OHX	Fentress, Pickett	42 min
Jul 18, 4:22 PM CDT	Special Weather Statement	OHX	Dickson	38 min
Jul 18, 4:31 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Houston, Humphreys	44 min
Jul 18, 4:54 PM CDT	Special Weather Statement	OHX	Montgomery	51 min
Jul 18, 5:10 PM CDT	Severe Thunderstorm Warning	OHX	Houston, Montgomery, Stewart	50 min
Jul 18, 5:42 PM CDT	Severe Thunderstorm Warning	OHX	Benton, Houston, Humphreys, Montgomery, Stewart	63 min

Nearby

Special Weather Statements in Tennessee, 2013 Every special weather statement in 2013

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.