Alert archive / Texas / Mesoscale Discussions in 2008

Mesoscale Discussion 2364

November 10, 200834 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Nov 10, 2008, 6:15 PM CST for 34 counties in Texas. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued: Nov 10, 2008, 6:15 PM CST (00:15 UTC)
Expired: Nov 10, 2008, 7:45 PM CST
In force: 90 min
Issued by: the Storm Prediction Center

All 34 counties

Bastrop County, TX, Bell County, TX, Blanco County, TX, Bosque County, TX, Brown County, TX, Burnet County, TX, Comanche County, TX, Coryell County, TX, Ellis County, TX, Erath County, TX, Falls County, TX, Gillespie County, TX, Hamilton County, TX, Hays County, TX, Hill County, TX, Hood County, TX, Johnson County, TX, Kerr County, TX, Kimble County, TX, Lampasas County, TX, Lee County, TX, Limestone County, TX, Llano County, TX, Mason County, TX, McCulloch County, TX, McLennan County, TX, Milam County, TX, Mills County, TX, Robertson County, TX, San Saba County, TX, Somervell County, TX, Tarrant County, TX, Travis County, TX, Williamson County, TX

The radar

The Ft Hood radar (KGRK), 101 km from the middle of the area, began a volume at 00:14 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 930Nov 10, 6:40 PM CST

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 0.3 hours before the alert went out and 213 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: 182 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 508 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 336 m²/s²
0-3 km storm-relative helicity: 457 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 10.4

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 10, 6:37 PM CST	Tornado Watch	SPC	Bosque, Brown, Coleman, Comanche, Coryell, Dallas and 15 more	7 hr
Nov 10, 10:33 PM CST	Mesoscale Discussion	SPC	Austin, Bastrop, Bell, Blanco, Bosque, Brazoria and 52 more	117 min
Nov 11, 1:23 AM CST	Mesoscale Discussion	SPC	Austin, Brazoria, Brazos, Burleson, Calhoun, Chambers and 24 more	97 min
Nov 11, 1:25 AM CST	Mesoscale Discussion	SPC	Brown, Burnet, Coke, Coleman, Concho, Coryell and 15 more	65 min
Nov 11, 10:21 AM CST	Mesoscale Discussion	SPC	Angelina, Brazos, Burleson, Grimes, Jasper, Lee and 14 more	54 min
Nov 11, 1:06 PM CST	Mesoscale Discussion	SPC	Austin, Chambers, Fort Bend, Hardin, Harris, Jasper and 9 more	54 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.