Alert archive / Texas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 25, NWS San Angelo, TX

March 27, 2018Callahan County, Taylor County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Mar 27, 2018, 12:12 AM CDT for Callahan County, Taylor County, Texas. It was in force for 48 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: Mar 27, 2018, 12:12 AM CDT (05:12 UTC)
Expired: Mar 27, 2018, 1:00 AM CDT
In force: 48 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Callahan County, TX, Taylor County, TX

The radar

The Dyess AFB radar (KDYX), 44 km from the middle of the area, began a volume at 05:12 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
Mar 26, 2:56 PM CDT	Severe Thunderstorm Watch	SPC	11 hr

The nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 5.2 hours before the alert went out and 245 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: 22 J/kg
Mixed-layer CIN: -117 J/kg
Mixed-layer LCL: 2214 m above ground
0-6 km bulk shear: 75 kt
0-1 km storm-relative helicity: -222 m²/s²
0-3 km storm-relative helicity: -153 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 Mar 26, 6:56 PM CDT, 5 hours 16 minutes earlier.

Area forecast discussion, Mar 26, 6:56 PM CDT, 5 hours 16 minutes before

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Hazardous weather outlook, Mar 26, 5:56 PM CDT, 6 hours 16 minutes before

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<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.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 26, 7:00 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Nolan, Sterling	45 min
Mar 26, 7:13 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Haskell, Jones	47 min
Mar 26, 7:17 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Jones, Nolan, Taylor	33 min
Mar 26, 7:45 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Nolan, Taylor	45 min
Mar 26, 8:04 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Shackelford, Throckmorton	26 min
Mar 26, 8:30 PM CDT	Severe Thunderstorm Warning	SJT	Shackelford, Throckmorton	45 min
Mar 26, 8:37 PM CDT	Special Weather Statement	SJT	Shackelford	23 min
Mar 26, 10:08 PM CDT	Special Weather Statement	SJT	Sterling	37 min
Mar 26, 10:55 PM CDT	Special Weather Statement	SJT	Coke	35 min
Mar 26, 11:05 PM CDT	Special Weather Statement	SJT	Irion	25 min
Mar 26, 11:32 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Irion, Tom Green	58 min
Mar 26, 11:42 PM CDT	Special Weather Statement	SJT	Nolan	33 min
Mar 27, 12:00 AM CDT	Special Weather Statement	SJT	Taylor	45 min
Mar 27, 12:23 AM CDT	Special Weather Statement	SJT	Runnels	67 min
Mar 27, 12:55 AM CDT	Special Weather Statement	SJT	Crockett	50 min
Mar 27, 1:02 AM CDT	Special Weather Statement	SJT	Callahan, Shackelford	43 min
Mar 27, 1:46 AM CDT	Special Weather Statement	SJT	Crockett, Schleicher	44 min
Mar 27, 2:34 AM CDT	Special Weather Statement	SJT	Schleicher	41 min
Mar 27, 3:21 AM CDT	Special Weather Statement	SJT	Coleman, Concho, Runnels	54 min
Mar 27, 3:26 AM CDT	Special Weather Statement	SJT	Crockett	64 min
Mar 27, 4:18 AM CDT	Special Weather Statement	SJT	Brown, Coleman	57 min
Mar 27, 8:44 AM CDT	Special Weather Statement	SJT	Coleman	46 min

Nearby

Severe Thunderstorm Warnings in Texas, 2018 Every severe thunderstorm warning in 2018

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.