Alert archive / Texas / Mesoscale Discussions in 2010

Mesoscale Discussion 545

May 13, 201014 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 13, 2010, 8:07 AM CDT for 14 counties in Texas. It was in force for 53 min.

The area

The outline as issued.

The facts

Issued: May 13, 2010, 8:07 AM CDT (13:07 UTC)
Expired: May 13, 2010, 9:00 AM CDT
In force: 53 min
Issued by: the Storm Prediction Center

Counties Callahan County, TX, Coleman County, TX, Concho County, TX, Eastland County, TX, Irion County, TX, Jack County, TX, Palo Pinto County, TX, Runnels County, TX, Schleicher County, TX, Shackelford County, TX, Stephens County, TX, Taylor County, TX, Tom Green County, TX, Young County, TX

The radar

The Dyess AFB radar (KDYX), 87 km from the middle of the area, began a volume at 13:07 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

Fort Worth, TX (KFWD), launched 12:00Z, 1.1 hours before the alert went out and 258 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: 2100 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 780 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 133 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 6.0

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 12, 10:03 PM CDT	Mesoscale Discussion	SPC	Borden, Childress, Collingsworth, Cottle, Crosby, Dawson and 10 more	57 min
May 12, 10:40 PM CDT	Severe Thunderstorm Watch	SPC	Archer, Baylor, Borden, Childress, Coke, Cottle and 34 more	6 hr
May 13, 2:04 AM CDT	Severe Thunderstorm Watch	SPC	Clay	4 hr
May 13, 3:15 AM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Coke, Crockett, Fisher, Glasscock and 14 more	60 min
May 13, 5:02 AM CDT	Mesoscale Discussion	SPC	Clay, Montague	28 min

Nearby

Mesoscale Discussions in Texas, 2010 Every mesoscale discussion in 2010

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.