Alert archive / Texas / Mesoscale Discussions in 2013

Mesoscale Discussion 933

June 1, 201314 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 1, 2013, 11:17 PM CDT for 14 counties in Texas. It was in force for 58 min.

The area

The outline as issued.

The facts

Issued: Jun 1, 2013, 11:17 PM CDT (04:17 UTC)
Expired: Jun 2, 2013, 12:15 AM CDT
In force: 58 min
Issued by: the Storm Prediction Center

Counties Bandera County, TX, Blanco County, TX, Comal County, TX, Edwards County, TX, Gillespie County, TX, Hays County, TX, Kendall County, TX, Kerr County, TX, Kinney County, TX, Medina County, TX, Real County, TX, Uvalde County, TX, Val Verde County, TX, Zavala County, TX

The radar

The Laughlin AFB radar (KDFX), 66 km from the middle of the area, began a volume at 04:17 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

Del Rio, TX (KDRT), launched 00:00Z, 4.3 hours before the alert went out and 89 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: 3747 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 1964 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: -37 m²/s²
0-3 km storm-relative helicity: 32 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.7

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
Jun 1, 8:28 PM CDT	Mesoscale Discussion	SPC	Bandera, Bexar, Blanco, Brewster, Burnet, Caldwell and 25 more	62 min
Jun 2, 5:57 PM CDT	Mesoscale Discussion	SPC	Culberson, El Paso, Hudspeth, Jeff Davis, Loving, Reeves	63 min
Jun 2, 6:20 PM CDT	Severe Thunderstorm Watch	SPC	Brewster, Culberson, El Paso, Hudspeth, Jeff Davis, Loving and 2 more	7 hr

Nearby

Mesoscale Discussions in Texas, 2013 Every mesoscale discussion in 2013

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.