Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS San Angelo, TX

April 28, 2021Coke County, Sterling County, Texas

NWS San Angelo, TX issued this special weather statement at Apr 28, 2021, 4:28 AM CDT for Coke County, Sterling County, Texas. It was in force for 47 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: Apr 28, 2021, 4:28 AM CDT (09:28 UTC)
Expired: Apr 28, 2021, 5:15 AM CDT
In force: 47 min
Issued by: NWS San Angelo, TX

Counties Coke County, TX, Sterling County, TX

The radar

The San Angelo radar (KSJT), 75 km from the middle of the area, began a volume at 09:29 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

Midland Regional, TX (KMAF), launched 00:00Z, 9.5 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: 18 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 3768 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 32 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

<!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 San Angelo, TX wrote its last area forecast discussion before this special weather statement went out at Apr 28, 4:17 AM CDT, 11 minutes earlier.

Area forecast discussion, Apr 28, 4:17 AM CDT, 11 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, 2:43 PM CDT, 13 hours 45 minutes before

Hazardous Weather Outlook
National Weather Service San Angelo TX
243 PM CDT Tue Apr 27 2021

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-281945-
Fisher-Nolan-Sterling-Coke-Runnels-Irion-Tom Green-Concho-
Crockett-Schleicher-Sutton-Haskell-Throckmorton-Jones-Shackelford-
Taylor-Callahan-Coleman-Brown-McCulloch-San Saba-Menard-Kimble-
Mason-
243 PM CDT Tue Apr 27 2021

This Hazardous Weather Outlook is for portions of west central
Texas.

.DAY ONE...This Afternoon and Tonight

Strong to severe thunderstorms are possible across most of the
area this afternoon and overnight. The main hazards will be large
hail and damaging winds. An isolated tornado is also possible.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Strong to severe thunderstorms are possible across most of West
Central Texas Wednesday and Wednesday night. Large hail and
damaging winds are the main hazards. An isolated tornado is also
possible. In addition, heavy rainfall may lead to localized
flooding.

.SPOTTER INFORMATION STATEMENT...
Spotter activation is not anticipated at this time.

In the hours before

Special weather statement, Apr 28, 4:28 AM CDT, 0 minutes before

Special Weather Statement
National Weather Service San Angelo TX
428 AM CDT Wed Apr 28 2021

TXZ054-064-065-281015-
Nolan TX-Coke TX-Sterling TX-
428 AM CDT Wed Apr 28 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN COKE...STERLING AND
SOUTHWESTERN NOLAN COUNTIES UNTIL 515 AM CDT...

At 427 AM CDT, Doppler radar was tracking a strong thunderstorm 9
miles southwest of Sterling City, moving northeast at 45 mph.

Half inch hail and winds in excess of 30 mph will be possible with
this storm.

This strong thunderstorm will be near...
  Sterling City around 440 AM CDT.
  Silver around 510 AM CDT.

Other locations impacted by this storm include The Intersection Of
Highway 158 And Ranch Road 2059.

A Tornado Watch remains in effect until 1000 AM CDT for west central
Texas.

LAT...LON 3192 10126 3209 10105 3208 10067 3220 10066
      3195 10047 3155 10119 3156 10127
TIME...MOT...LOC 0927Z 230DEG 38KT 3177 10112

Daniels

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 27, 7:17 PM CDT	Special Weather Statement	SJT	Fisher	58 min
Apr 27, 7:25 PM CDT	Severe Thunderstorm Warning	SJT	Haskell	65 min
Apr 27, 7:27 PM CDT	Severe Thunderstorm Warning	SJT	Haskell	63 min
Apr 27, 7:33 PM CDT	Areal Flood Advisory	SJT	Fisher	117 min
Apr 27, 8:11 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Nolan	64 min
Apr 27, 8:27 PM CDT	Tornado Warning	SJT	Fisher	33 min
Apr 27, 8:29 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Jones	61 min
Apr 27, 8:34 PM CDT	Special Weather Statement	SJT	Haskell	41 min
Apr 27, 8:46 PM CDT	Tornado Warning	SJT	Nolan	44 min
Apr 27, 8:54 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Jones, Nolan, Taylor	66 min
Apr 27, 8:56 PM CDT	Special Weather Statement	SJT	Haskell	64 min
Apr 27, 9:12 PM CDT	Tornado Warning	SJT	Fisher, Jones, Nolan, Taylor	48 min
Apr 27, 9:20 PM CDT	Severe Thunderstorm Warning	SJT	Jones, Shackelford	40 min
Apr 27, 9:33 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Throckmorton	57 min
Apr 27, 9:53 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Nolan	67 min
Apr 27, 10:01 PM CDT	Special Weather Statement	SJT	Shackelford	44 min
Apr 28, 1:11 AM CDT	Severe Thunderstorm Warning	SJT	Fisher, Nolan	64 min
Apr 28, 1:59 AM CDT	Severe Thunderstorm Warning	SJT	Fisher, Jones, Nolan, Taylor	61 min
Apr 28, 2:32 AM CDT	Tornado Warning	SJT	Jones	28 min
Apr 28, 2:57 AM CDT	Severe Thunderstorm Warning	SJT	Jones, Shackelford	63 min
Apr 28, 3:49 AM CDT	Tornado Warning	SJT	Shackelford	26 min
Apr 28, 3:51 AM CDT	Severe Thunderstorm Warning	SJT	Shackelford, Throckmorton	24 min
Apr 28, 4:18 AM CDT	Areal Flood Advisory	SJT	Throckmorton	3 hr
Apr 28, 4:57 AM CDT	Special Weather Statement	SJT	Sterling	48 min
Apr 28, 5:03 AM CDT	Special Weather Statement	SJT	Nolan	42 min
Apr 28, 5:12 AM CDT	Areal Flood Advisory	SJT	Nolan	107 min
Apr 28, 5:34 AM CDT	Areal Flood Advisory	SJT	Taylor	3 hr
Apr 28, 6:04 AM CDT	Special Weather Statement	SJT	Shackelford	41 min
Apr 28, 6:25 AM CDT	Flash Flood Warning	SJT	Callahan, Jones, Shackelford, Taylor	3 hr
Apr 28, 6:39 AM CDT	Areal Flood Advisory	SJT	Callahan, Shackelford	3 hr
Apr 28, 6:47 AM CDT	Special Weather Statement	SJT	Shackelford	28 min
Apr 28, 9:27 AM CDT	Areal Flood Advisory	SJT	Callahan, Shackelford, Taylor	3 hr
Apr 28, 2:07 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Runnels	53 min
Apr 28, 2:52 PM CDT	Special Weather Statement	SJT	Runnels	38 min
Apr 28, 3:16 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Coleman, Runnels, Taylor	44 min
Apr 28, 3:52 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Coleman	38 min
Apr 28, 4:24 PM CDT	Special Weather Statement	SJT	Brown	36 min
Apr 28, 6:10 PM CDT	Special Weather Statement	SJT	Brown	50 min

Nearby

Special Weather Statements in Texas, 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.