Alert archive / Texas / Mesoscale Discussions in 2006

Mesoscale Discussion 2242

November 29, 20068 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Nov 29, 2006, 8:48 PM CST for 8 counties in Texas. It was in force for 57 min.

The area

The outline as issued.

The facts

Issued: Nov 29, 2006, 8:48 PM CST (02:48 UTC)
Expired: Nov 29, 2006, 9:45 PM CST
In force: 57 min
Issued by: the Storm Prediction Center

Counties Bandera County, TX, Bexar County, TX, Blanco County, TX, Comal County, TX, Gillespie County, TX, Hays County, TX, Kendall County, TX, Kerr County, TX

The radar

The Austin/San Antonio radar (KEWX), 78 km from the middle of the area, began a volume at 02:48 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, 2.8 hours before the alert went out and 223 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: 545 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 1291 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 62 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.4

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
Nov 29, 6:33 PM CST	Mesoscale Discussion	SPC	Bosque, Brown, Coleman, Collin, Comanche, Dallas and 21 more	57 min
Nov 29, 8:47 PM CST	Tornado Watch	SPC	Bandera, Bexar, Blanco, Burnet, Caldwell, Comal and 9 more	5 hr
Nov 29, 10:25 PM CST	Mesoscale Discussion	SPC	Armstrong, Briscoe, Carson, Castro, Deaf Smith, Donley and 11 more	2 hr
Nov 30, 1:25 AM CST	Mesoscale Discussion	SPC	Bandera, Bastrop, Bexar, Blanco, Burnet, Caldwell and 16 more	65 min
Nov 30, 2:43 AM CST	Mesoscale Discussion	SPC	Archer, Baylor, Callahan, Childress, Clay, Coke and 35 more	6 hr
Nov 30, 6:59 AM CST	Mesoscale Discussion	SPC	Bell, Bosque, Burnet, Collin, Coryell, Dallas and 13 more	4 hr

Nearby

Mesoscale Discussions in Texas, 2006 Every mesoscale discussion in 2006

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.