Alert archive / Texas / Mesoscale Discussions in 2007

Mesoscale Discussion 932

May 31, 200724 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 31, 2007, 1:04 AM CDT for 24 counties in Texas. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued: May 31, 2007, 1:04 AM CDT (06:04 UTC)
Expired: May 31, 2007, 3:00 AM CDT
In force: 116 min
Issued by: the Storm Prediction Center

All 24 counties

Bell County, TX, Blanco County, TX, Bosque County, TX, Brown County, TX, Burnet County, TX, Comanche County, TX, Coryell County, TX, Erath County, TX, Gillespie County, TX, Hamilton County, TX, Hill County, TX, Hood County, TX, Johnson County, TX, Lampasas County, TX, Llano County, TX, Mason County, TX, McCulloch County, TX, McLennan County, TX, Mills County, TX, Parker County, TX, San Saba County, TX, Somervell County, TX, Tarrant County, TX, Williamson County, TX

The radar

The Ft Hood radar (KGRK), 123 km from the middle of the area, began a volume at 06:05 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 00:00Z, 6.1 hours before the alert went out and 159 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: 401 J/kg
Mixed-layer CIN: -272 J/kg
Mixed-layer LCL: 1064 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

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 30, 7:27 PM CDT	Severe Thunderstorm Watch	SPC	Brown, Burnet, Callahan, Coleman, Comanche, Concho and 21 more	5 hr
May 31, 3:28 PM CDT	Mesoscale Discussion	SPC	Armstrong, Briscoe, Carson, Castro, Collingsworth, Dallam and 21 more	92 min
May 31, 3:29 PM CDT	Tornado Watch	SPC	Armstrong, Carson, Collingsworth, Dallam, Deaf Smith, Donley and 14 more	7 hr
May 31, 4:45 PM CDT	Tornado Watch	SPC	Andrews, Bailey, Borden, Briscoe, Castro, Childress and 21 more	6 hr

Nearby

Mesoscale Discussions in Texas, 2007 Every mesoscale discussion in 2007

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.