Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 60, NWS San Angelo, TX

April 22, 2015Callahan County, Taylor County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Apr 22, 2015, 2:43 PM CDT for Callahan County, Taylor County, Texas. It was in force for 16 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 22, 2015, 2:43 PM CDT (19:43 UTC)
Expired: Apr 22, 2015, 2:59 PM CDT
In force: 16 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 1.0 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 19:46 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, 7.7 hours before the alert went out and 227 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: 311 J/kg
Mixed-layer CIN: -327 J/kg
Mixed-layer LCL: 760 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 126 m²/s²
0-3 km storm-relative helicity: 118 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 22, 12:51 PM CDT, 1 hour 52 minutes earlier.

Area forecast discussion, Apr 22, 12:51 PM CDT, 1 hour 52 minutes before

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Hazardous weather outlook, Apr 22, 5:57 AM CDT, 8 hours 46 minutes before

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      <div class="status" id="status">Temporary Notice</div>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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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
Apr 21, 9:42 PM CDT	Special Weather Statement	SJT	Nolan	33 min
Apr 21, 10:17 PM CDT	Special Weather Statement	SJT	Nolan	28 min
Apr 21, 10:45 PM CDT	Severe Thunderstorm Warning	SJT	Nolan, Taylor	30 min
Apr 22, 2:46 PM CDT	Special Weather Statement	SJT	Coleman	29 min
Apr 22, 3:10 PM CDT	Severe Thunderstorm Warning	SJT	Coleman	65 min
Apr 22, 3:26 PM CDT	Special Weather Statement	SJT	Coleman	64 min
Apr 22, 4:29 PM CDT	Severe Thunderstorm Warning	SJT	Brown	46 min
Apr 22, 4:49 PM CDT	Special Weather Statement	SJT	Shackelford	41 min
Apr 22, 5:19 PM CDT	Special Weather Statement	SJT	Throckmorton	26 min
Apr 22, 5:20 PM CDT	Areal Flood Advisory	SJT	Callahan, Coleman	115 min
Apr 22, 6:12 PM CDT	Special Weather Statement	SJT	Fisher	33 min
Apr 22, 6:29 PM CDT	Tornado Warning	SJT	Fisher, Nolan	31 min
Apr 22, 6:58 PM CDT	Tornado Warning	SJT	Fisher, Nolan	32 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.