Alert archive / Texas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 44, NWS Fort Worth, TX

April 12, 2020Rains County, Van Zandt County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Apr 12, 2020, 6:11 PM CDT for Rains County, Van Zandt County, Texas. It was in force for 34 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: Apr 12, 2020, 6:11 PM CDT (23:11 UTC)
Expired: Apr 12, 2020, 6:45 PM CDT
In force: 34 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Rains County, TX, Van Zandt County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 140 km from the middle of the area, began a volume at 23:14 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 12, 2:51 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 11.2 hours before the alert went out and 139 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: 1033 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 776 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 155 m²/s²
0-3 km storm-relative helicity: 201 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 6.4

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 Fort Worth, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 12, 3:58 PM CDT, 2 hours 13 minutes earlier.

Area forecast discussion, Apr 12, 3:58 PM CDT, 2 hours 13 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, Apr 12, 3:32 PM CDT, 2 hours 39 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

Local storm report, Apr 12, 4:41 PM CDT, 1 hour 30 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>

Local storm report, Apr 12, 4:46 PM CDT, 1 hour 25 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>

Local storm report, Apr 12, 4:51 PM CDT, 1 hour 20 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>

Local storm report, Apr 12, 4:53 PM CDT, 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, Apr 12, 5:02 PM CDT, 1 hour 9 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, Apr 12, 5:28 PM CDT, 43 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 Fort Worth, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 11, 7:25 PM CDT	Severe Thunderstorm Warning	FWD	Stephens	65 min
Apr 12, 1:55 AM CDT	Wind Advisory	FWD	Bell, Bosque, Collin, Comanche, Cooke, Coryell and 32 more	23 hr
Apr 12, 3:20 AM CDT	Special Weather Statement	FWD	Lampasas	40 min
Apr 12, 3:36 AM CDT	Severe Thunderstorm Warning	FWD	Lampasas	42 min
Apr 12, 3:41 AM CDT	Special Weather Statement	FWD	Coryell	34 min
Apr 12, 4:26 AM CDT	Special Weather Statement	FWD	McLennan	34 min
Apr 12, 4:30 AM CDT	Special Weather Statement	FWD	Coryell	30 min
Apr 12, 4:51 AM CDT	Tornado Warning	FWD	Hill, Limestone, McLennan	39 min
Apr 12, 5:09 AM CDT	Special Weather Statement	FWD	Falls, McLennan	36 min
Apr 12, 5:20 AM CDT	Special Weather Statement	FWD	Bell	25 min
Apr 12, 5:35 AM CDT	Special Weather Statement	FWD	Navarro	25 min
Apr 12, 5:39 AM CDT	Special Weather Statement	FWD	Limestone	36 min
Apr 12, 5:43 AM CDT	Severe Thunderstorm Warning	FWD	Falls, Freestone, Hill, Limestone, McLennan, Navarro	62 min
Apr 12, 5:45 AM CDT	Tornado Warning	FWD	Freestone, Limestone	45 min
Apr 12, 6:01 AM CDT	Special Weather Statement	FWD	Navarro	29 min
Apr 12, 6:14 AM CDT	Tornado Warning	FWD	Freestone	34 min
Apr 12, 6:30 AM CDT	Areal Flood Advisory	FWD	Navarro	3 hr
Apr 12, 6:31 AM CDT	Special Weather Statement	FWD	Henderson	29 min
Apr 12, 6:36 AM CDT	Severe Thunderstorm Warning	FWD	Henderson	39 min
Apr 12, 6:40 AM CDT	Areal Flood Advisory	FWD	Falls, Limestone	3 hr
Apr 12, 6:43 AM CDT	Severe Thunderstorm Warning	FWD	Anderson, Henderson	58 min
Apr 12, 7:01 AM CDT	Special Weather Statement	FWD	Robertson	59 min
Apr 12, 7:11 AM CDT	Special Weather Statement	FWD	Milam	49 min
Apr 12, 7:16 AM CDT	Severe Thunderstorm Warning	FWD	Anderson, Freestone, Leon	45 min
Apr 12, 7:45 AM CDT	Special Weather Statement	FWD	Leon	30 min
Apr 12, 8:00 AM CDT	Special Weather Statement	FWD	Leon, Robertson	45 min
Apr 12, 2:16 PM CDT	River Flood Warning	FWD	Henderson, Navarro	4 days
Apr 12, 2:16 PM CDT	River Flood Warning	FWD	Leon, Robertson	4 days
Apr 12, 3:17 PM CDT	Severe Thunderstorm Warning	FWD	Fannin, Lamar	58 min
Apr 12, 4:10 PM CDT	Severe Thunderstorm Warning	FWD	Fannin, Lamar	65 min
Apr 12, 4:27 PM CDT	Special Weather Statement	FWD	Dallas	33 min
Apr 12, 5:02 PM CDT	Special Weather Statement	FWD	Dallas	28 min
Apr 12, 5:28 PM CDT	Special Weather Statement	FWD	Kaufman	32 min

Nearby

Severe Thunderstorm Warnings in Texas, 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.