Alert archive / Texas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 149, NWS San Angelo, TX

June 23, 2018Callahan County, Shackelford County, Throckmorton County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Jun 23, 2018, 10:49 PM CDT for Callahan County, Shackelford County, Throckmorton County, Texas. It was in force for 26 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: Jun 23, 2018, 10:49 PM CDT (03:49 UTC)
Expired: Jun 23, 2018, 11:15 PM CDT
In force: 26 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Callahan County, TX, Shackelford County, TX, Throckmorton County, TX

The radar

The Dyess AFB radar (KDYX), 23 km from the middle of the area, began a volume at 03:53 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 00:00Z, 3.8 hours before the alert went out and 189 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: 2014 J/kg
Mixed-layer CIN: -129 J/kg
Mixed-layer LCL: 2041 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 117 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.7

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.

In the hours before

Special weather statement, Jun 23, 9:24 PM CDT, 1 hour 25 minutes before

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Special weather statement, Jun 23, 9:38 PM CDT, 1 hour 11 minutes before

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Local storm report, Jun 23, 10:02 PM CDT, 47 minutes before

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Special weather statement, Jun 23, 10:07 PM CDT, 42 minutes before

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Special weather statement, Jun 23, 10:32 PM CDT, 17 minutes before

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Special weather statement, Jun 23, 10:35 PM CDT, 14 minutes before

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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
Jun 23, 7:02 PM CDT	Special Weather Statement	SJT	Sterling	43 min
Jun 23, 7:14 PM CDT	Special Weather Statement	SJT	Jones	46 min
Jun 23, 7:18 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Nolan	42 min
Jun 23, 7:42 PM CDT	Special Weather Statement	SJT	Sterling	48 min
Jun 23, 7:49 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Jones, Shackelford	41 min
Jun 23, 7:55 PM CDT	Severe Thunderstorm Warning	SJT	Sterling	26 min
Jun 23, 8:00 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Jones, Nolan	45 min
Jun 23, 8:11 PM CDT	Severe Thunderstorm Warning	SJT	Coke	49 min
Jun 23, 8:16 PM CDT	Special Weather Statement	SJT	Nolan	44 min
Jun 23, 8:25 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Runnels, Sterling, Tom Green	50 min
Jun 23, 8:40 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Haskell, Jones	50 min
Jun 23, 8:41 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Concho, Irion, Runnels, Tom Green	49 min
Jun 23, 8:47 PM CDT	Special Weather Statement	SJT	Fisher	43 min
Jun 23, 9:06 PM CDT	Special Weather Statement	SJT	Runnels	39 min
Jun 23, 9:09 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Jones, Shackelford, Throckmorton	16 min
Jun 23, 9:23 PM CDT	Severe Thunderstorm Warning	SJT	Haskell	22 min
Jun 23, 9:24 PM CDT	Special Weather Statement	SJT	Concho, McCulloch, Menard, Tom Green	66 min
Jun 23, 9:38 PM CDT	Special Weather Statement	SJT	Callahan, Coleman, Runnels, Taylor	52 min
Jun 23, 9:43 PM CDT	Areal Flood Advisory	SJT	Tom Green	3 hr
Jun 23, 9:43 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Jones, Shackelford, Throckmorton	47 min
Jun 23, 10:07 PM CDT	Special Weather Statement	SJT	Jones	38 min
Jun 23, 10:15 PM CDT	Areal Flood Advisory	SJT	Jones, Taylor	2 hr
Jun 23, 10:19 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Shackelford	41 min
Jun 23, 10:32 PM CDT	Special Weather Statement	SJT	Throckmorton	43 min
Jun 23, 10:35 PM CDT	Special Weather Statement	SJT	Brown, Coleman	40 min
Jun 24, 12:18 AM CDT	Special Weather Statement	SJT	San Saba	42 min
Jun 24, 12:23 AM CDT	Severe Thunderstorm Warning	SJT	San Saba	30 min
Jun 24, 3:30 AM CDT	Heat Advisory	SJT	Brown, Callahan, Coke, Coleman, Concho, Crockett and 18 more	17 hr

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.