Alert archive / Texas / Mesoscale Discussions in 2005

Mesoscale Discussion 1689

July 7, 200518 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jul 7, 2005, 9:33 AM CDT for 18 counties in Texas. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued: Jul 7, 2005, 9:33 AM CDT (14:33 UTC)
Expired: Jul 7, 2005, 11:30 AM CDT
In force: 117 min
Issued by: the Storm Prediction Center

Counties Anderson County, TX, Bell County, TX, Brazos County, TX, Falls County, TX, Freestone County, TX, Grimes County, TX, Henderson County, TX, Houston County, TX, Kaufman County, TX, Leon County, TX, Limestone County, TX, Madison County, TX, McLennan County, TX, Milam County, TX, Navarro County, TX, Robertson County, TX, Smith County, TX, Van Zandt County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 2.6 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: 367 J/kg
Mixed-layer CIN: -194 J/kg
Mixed-layer LCL: 1229 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 158 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

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
Jul 6, 7:25 PM CDT	Severe Thunderstorm Watch	SPC	Armstrong, Briscoe, Carson, Castro, Childress, Collingsworth and 20 more	4 hr
Jul 6, 9:23 PM CDT	Mesoscale Discussion	SPC	Armstrong, Bailey, Briscoe, Carson, Castro, Collingsworth and 24 more	37 min
Jul 6, 11:13 PM CDT	Mesoscale Discussion	SPC	Andrews, Armstrong, Borden, Briscoe, Carson, Castro and 34 more	92 min
Jul 6, 11:45 PM CDT	Severe Thunderstorm Watch	SPC	Andrews, Bailey, Borden, Briscoe, Castro, Cochran and 27 more	5 hr
Jul 7, 2:40 AM CDT	Mesoscale Discussion	SPC	Andrews, Bailey, Borden, Briscoe, Castro, Childress and 32 more	65 min
Jul 7, 4:03 AM CDT	Mesoscale Discussion	SPC	Andrews, Archer, Bailey, Baylor, Borden, Briscoe and 38 more	57 min
Jul 7, 3:55 PM CDT	Severe Thunderstorm Watch	SPC	Bailey, Cochran, Dallam, Deaf Smith, Hartley, Oldham and 1 more	5 hr

Nearby

Mesoscale Discussions in Texas, 2005 Every mesoscale discussion in 2005

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.