Alert archive / Kentucky / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 142, NWS Louisville, KY

July 12, 2020Marion County, Nelson County, Washington County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Jul 12, 2020, 6:01 PM EDT for Marion County, Nelson County, Washington County, Kentucky. It was in force for 29 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: Jul 12, 2020, 6:01 PM EDT (22:01 UTC)
Expired: Jul 12, 2020, 6:30 PM EDT
In force: 29 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Marion County, KY, Nelson County, KY, Washington County, KY

The radar

The Louisville radar (KLVX), 64 km from the middle of the area, began a volume at 22:04 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, 10.0 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 852 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 188 m²/s²
0-3 km storm-relative helicity: 332 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 Louisville, KY wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 12, 2:58 PM EDT, 3 hours 3 minutes earlier.

Area forecast discussion, Jul 12, 2:58 PM EDT, 3 hours 3 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>

Hazardous weather outlook, Jul 12, 3:17 PM EDT, 2 hours 44 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>

In the hours before

Special weather statement, Jul 12, 4:01 PM EDT, 2 hours 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, Jul 12, 4:29 PM EDT, 1 hour 32 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, Jul 12, 4:43 PM EDT, 1 hour 18 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, Jul 12, 4:55 PM EDT, 1 hour 6 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, Jul 12, 5:27 PM EDT, 34 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, Jul 12, 5:32 PM EDT, 29 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>

The office that day

Everything else NWS Louisville, KY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 11, 8:00 PM EDT	Special Weather Statement	LMK	Jefferson, Oldham	30 min
Jul 11, 8:09 PM EDT	Severe Thunderstorm Warning	LMK	Bullitt, Jefferson, Oldham, Spencer	36 min
Jul 11, 8:31 PM EDT	Severe Thunderstorm Warning	LMK	Henry, Oldham, Shelby	29 min
Jul 11, 8:39 PM EDT	Special Weather Statement	LMK	Anderson	36 min
Jul 11, 8:40 PM EDT	Severe Thunderstorm Warning	LMK	Bullitt, Jefferson	35 min
Jul 11, 9:07 PM EDT	Special Weather Statement	LMK	Anderson, Mercer, Woodford	38 min
Jul 11, 9:17 PM EDT	Special Weather Statement	LMK	Bullitt, Meade, Nelson, Spencer	28 min
Jul 11, 9:36 PM EDT	Special Weather Statement	LMK	Franklin, Jessamine, Mercer, Woodford	24 min
Jul 11, 9:49 PM EDT	Severe Thunderstorm Warning	LMK	Boyle, Garrard, Jessamine, Mercer	26 min
Jul 11, 10:06 PM EDT	Severe Thunderstorm Warning	LMK	Garrard, Jessamine, Madison	39 min
Jul 11, 11:03 PM EDT	Special Weather Statement	LMK	Grayson	42 min
Jul 12, 12:09 AM EDT	Special Weather Statement	LMK	Ohio	36 min
Jul 12, 12:38 AM EDT	Special Weather Statement	LMK	Butler	37 min
Jul 12, 1:59 AM EDT	Special Weather Statement	LMK	Breckinridge, Hancock, Jefferson, Meade, Oldham	31 min
Jul 12, 2:06 AM EDT	Severe Thunderstorm Warning	LMK	Meade	24 min
Jul 12, 2:32 AM EDT	Special Weather Statement	LMK	Meade	28 min
Jul 12, 2:41 AM EDT	Special Weather Statement	LMK	Bullitt, Jefferson, Oldham, Shelby, Spencer	34 min
Jul 12, 2:42 AM EDT	Special Weather Statement	LMK	Breckinridge, Hardin, Ohio	33 min
Jul 12, 3:11 AM EDT	Special Weather Statement	LMK	Edmonson, Grayson, Hart, Larue, Nelson, Taylor	34 min
Jul 12, 10:59 AM EDT	Severe Thunderstorm Warning	LMK	Hancock	46 min
Jul 12, 11:33 AM EDT	Special Weather Statement	LMK	Meade	57 min
Jul 12, 11:54 AM EDT	Severe Thunderstorm Warning	LMK	Breckinridge, Hardin, Meade	36 min
Jul 12, 12:03 PM EDT	Special Weather Statement	LMK	Ohio	42 min
Jul 12, 12:19 PM EDT	Special Weather Statement	LMK	Bullitt	41 min
Jul 12, 3:23 PM EDT	Special Weather Statement	LMK	Ohio	37 min
Jul 12, 3:56 PM EDT	Special Weather Statement	LMK	Butler	34 min
Jul 12, 4:29 PM EDT	Special Weather Statement	LMK	Bullitt	31 min
Jul 12, 4:43 PM EDT	Special Weather Statement	LMK	Butler	47 min
Jul 12, 4:55 PM EDT	Special Weather Statement	LMK	Bullitt	35 min
Jul 12, 5:00 PM EDT	Severe Thunderstorm Warning	LMK	Butler, Logan	30 min
Jul 12, 5:27 PM EDT	Special Weather Statement	LMK	Logan	33 min
Jul 12, 5:32 PM EDT	Special Weather Statement	LMK	Larue, Nelson	43 min
Jul 12, 6:12 PM EDT	Special Weather Statement	LMK	Logan	33 min
Jul 12, 6:16 PM EDT	Severe Thunderstorm Warning	LMK	Marion, Washington	29 min
Jul 12, 6:22 PM EDT	Special Weather Statement	LMK	Green, Taylor	38 min
Jul 12, 6:36 PM EDT	Special Weather Statement	LMK	Boyle	39 min
Jul 12, 6:42 PM EDT	Severe Thunderstorm Warning	LMK	Boyle, Lincoln, Mercer	22 min
Jul 12, 6:56 PM EDT	Special Weather Statement	LMK	Adair, Casey	49 min
Jul 12, 7:04 PM EDT	Special Weather Statement	LMK	Garrard	41 min
Jul 12, 7:08 PM EDT	Severe Thunderstorm Warning	LMK	Adair, Casey, Taylor	37 min
Jul 12, 7:39 PM EDT	Special Weather Statement	LMK	Lincoln	36 min
Jul 11, 8:50 PM EDT	Severe Thunderstorm Warning	LMK	Dubois, Orange	25 min
Jul 11, 9:00 PM EDT	Areal Flood Advisory	LMK	Crawford, Harrison	4 hr
Jul 11, 9:44 PM EDT	Special Weather Statement	LMK	Dubois	31 min
Jul 12, 1:07 AM EDT	Special Weather Statement	LMK	Dubois	23 min
Jul 12, 1:30 AM EDT	Special Weather Statement	LMK	Crawford, Dubois, Orange, Washington	30 min
Jul 12, 4:01 PM EDT	Special Weather Statement	LMK	Harrison	29 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2020 Every severe thunderstorm warning in 2020

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.