Alert archive / Texas / Mesoscale Discussions in 2015

Mesoscale Discussion 510

May 5, 201518 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 5, 2015, 1:51 PM CDT for 18 counties in Texas. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued: May 5, 2015, 1:51 PM CDT (18:51 UTC)
Expired: May 5, 2015, 3:45 PM CDT
In force: 114 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

Counties Coke County, TX, Concho County, TX, Crockett County, TX, Fisher County, TX, Glasscock County, TX, Irion County, TX, Jones County, TX, Mitchell County, TX, Nolan County, TX, Reagan County, TX, Runnels County, TX, Schleicher County, TX, Sterling County, TX, Sutton County, TX, Taylor County, TX, Terrell County, TX, Tom Green County, TX, Val Verde County, TX

The radar

The San Angelo radar (KSJT), 91 km from the middle of the area, began a volume at 18:53 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

Midland Regional, TX (KMAF), launched 12:00Z, 6.9 hours before the alert went out and 149 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: 342 J/kg
Mixed-layer CIN: -101 J/kg
Mixed-layer LCL: 770 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 205 m²/s²
0-3 km storm-relative helicity: 239 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 3.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 4, 7:12 PM CDT	Mesoscale Discussion	SPC	Andrews, Brewster, Crane, Crockett, Ector, Loving and 10 more	93 min
May 4, 7:53 PM CDT	Tornado Watch	SPC	Andrews, Brewster, Crane, Crockett, Ector, Glasscock and 12 more	6 hr
May 4, 7:55 PM CDT	Mesoscale Discussion	SPC	Andrews, Brewster, Crane, Crockett, Ector, Glasscock and 14 more	65 min
May 4, 10:05 PM CDT	Mesoscale Discussion	SPC	Andrews, Crane, Crockett, Ector, Loving, Martin and 9 more	115 min
May 5, 2:01 PM CDT	Mesoscale Discussion	SPC	Parmer	89 min
May 5, 2:58 PM CDT	Mesoscale Discussion	SPC	Andrews, Bailey, Borden, Cochran, Crosby, Dawson and 12 more	92 min

Nearby

Mesoscale Discussions in Texas, 2015 Every mesoscale discussion 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.