Alert archive / Texas / Mesoscale Discussions in 2008

Mesoscale Discussion 930

May 14, 200836 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 14, 2008, 7:06 PM CDT for 36 counties in Texas. It was in force for 54 min.

The area

The outline as issued.

The facts

Issued: May 14, 2008, 7:06 PM CDT (00:06 UTC)
Expired: May 14, 2008, 8:00 PM CDT
In force: 54 min
Issued by: the Storm Prediction Center

All 36 counties

Atascosa County, TX, Bandera County, TX, Bexar County, TX, Blanco County, TX, Brown County, TX, Burnet County, TX, Callahan County, TX, Coleman County, TX, Comal County, TX, Comanche County, TX, Coryell County, TX, Dimmit County, TX, Eastland County, TX, Erath County, TX, Frio County, TX, Gillespie County, TX, Guadalupe County, TX, Hamilton County, TX, Hays County, TX, Kendall County, TX, Kerr County, TX, La Salle County, TX, Lampasas County, TX, Llano County, TX, Mason County, TX, Maverick County, TX, McCulloch County, TX, McMullen County, TX, Medina County, TX, Mills County, TX, Real County, TX, San Saba County, TX, Uvalde County, TX, Webb County, TX, Wilson County, TX, Zavala County, TX

The radar

The Austin/San Antonio radar (KEWX), 120 km from the middle of the area, began a volume at 00:09 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Tornado Watch 323May 14, 7:50 PM CDT

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 0.1 hours before the alert went out and 172 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: 924 J/kg
Mixed-layer CIN: -118 J/kg
Mixed-layer LCL: 2159 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: -27 m²/s²
0-3 km storm-relative helicity: -29 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.9

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 14, 7:50 PM CDT	Tornado Watch	SPC	Bastrop, Bell, Bosque, Brazos, Burleson, Caldwell and 30 more	6 hr
May 14, 7:53 PM CDT	Mesoscale Discussion	SPC	Brooks, Hidalgo, Jim Hogg, Starr, Zapata	67 min
May 14, 10:02 PM CDT	Mesoscale Discussion	SPC	Austin, Bandera, Bastrop, Bell, Bexar, Blanco and 76 more	88 min
May 14, 11:40 PM CDT	Mesoscale Discussion	SPC	Anderson, Angelina, Cherokee, Gregg, Henderson, Houston and 9 more	65 min
May 15, 1:16 AM CDT	Tornado Watch	SPC	Angelina, Bowie, Brazos, Burleson, Camp, Cass and 29 more	6 hr
May 15, 2:11 AM CDT	Mesoscale Discussion	SPC	Jefferson, Orange	94 min
May 15, 4:16 AM CDT	Tornado Watch	SPC	Jefferson, Orange	7 hr
May 15, 6:24 PM CDT	Mesoscale Discussion	SPC	Dimmit, Maverick	66 min

Nearby

Mesoscale Discussions in Texas, 2008 Every mesoscale discussion in 2008

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.