Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 105, NWS San Angelo, TX

April 27, 2015Brown County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Apr 27, 2015, 6:11 PM CDT for Brown County, Texas. It was in force for 49 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 27, 2015, 6:11 PM CDT (23:11 UTC)
Expired: Apr 27, 2015, 7:00 PM CDT
In force: 49 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Brown County, TX

The radar

The Dyess AFB radar (KDYX), 88 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 nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 11.2 hours before the alert went out and 199 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: 2 J/kg
Mixed-layer CIN: -454 J/kg
Mixed-layer LCL: 931 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: 221 m²/s²
0-3 km storm-relative helicity: 158 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 San Angelo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 27, 3:39 PM CDT, 2 hours 32 minutes earlier.

Area forecast discussion, Apr 27, 3:39 PM CDT, 2 hours 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>

Hazardous weather outlook, Apr 27, 2:55 PM CDT, 3 hours 16 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 San Angelo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 26, 8:12 PM CDT	Special Weather Statement	SJT	Schleicher	63 min
Apr 26, 8:22 PM CDT	Special Weather Statement	SJT	Tom Green	23 min
Apr 26, 8:43 PM CDT	Special Weather Statement	SJT	Sutton	32 min
Apr 26, 8:46 PM CDT	Severe Thunderstorm Warning	SJT	Schleicher, Sutton	44 min
Apr 26, 8:51 PM CDT	Severe Thunderstorm Warning	SJT	Concho, Tom Green	54 min
Apr 26, 9:02 PM CDT	Special Weather Statement	SJT	Coleman	28 min
Apr 26, 9:08 PM CDT	Severe Thunderstorm Warning	SJT	Brown, Callahan, Coleman	52 min
Apr 26, 9:18 PM CDT	Special Weather Statement	SJT	Runnels	42 min
Apr 26, 9:38 PM CDT	Severe Thunderstorm Warning	SJT	Coleman, Concho, Kimble, McCulloch, Menard, San Saba and 2 more	52 min
Apr 26, 9:56 PM CDT	Severe Thunderstorm Warning	SJT	Brown, Coleman	49 min
Apr 26, 10:01 PM CDT	Areal Flood Advisory	SJT	Brown, Coleman	89 min
Apr 26, 10:22 PM CDT	Tornado Warning	SJT	Kimble, Menard	38 min
Apr 26, 10:28 PM CDT	Severe Thunderstorm Warning	SJT	Kimble, McCulloch, Mason, Menard, San Saba, Sutton	62 min
Apr 26, 10:53 PM CDT	Special Weather Statement	SJT	Callahan	37 min
Apr 26, 11:27 PM CDT	Special Weather Statement	SJT	Mason	33 min
Apr 26, 11:35 PM CDT	Special Weather Statement	SJT	San Saba	25 min
Apr 27, 6:14 PM CDT	Severe Thunderstorm Warning	SJT	Brown	46 min

Nearby

Severe Thunderstorm Warnings in Texas, 2015 Every severe thunderstorm warning in 2015

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.