Alert archive / Texas / Mesoscale Discussions in 2005

Mesoscale Discussion 1678

July 6, 200534 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jul 6, 2005, 4:51 PM CDT for 34 counties in Texas. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued: Jul 6, 2005, 4:51 PM CDT (21:51 UTC)
Expired: Jul 6, 2005, 6:15 PM CDT
In force: 84 min
Issued by: the Storm Prediction Center

All 34 counties

Armstrong County, TX, Bailey County, TX, Borden County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Crosby County, TX, Dallam County, TX, Dawson County, TX, Deaf Smith County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Garza County, TX, Hale County, TX, Hansford County, TX, Hartley County, TX, Hockley County, TX, Howard County, TX, Hutchinson County, TX, Lamb County, TX, Lubbock County, TX, Lynn County, TX, Mitchell County, TX, Moore County, TX, Motley County, TX, Oldham County, TX, Parmer County, TX, Potter County, TX, Randall County, TX, Scurry County, TX, Sherman County, TX, Swisher County, TX, Terry County, TX

The radar

The Lubbock radar (KLBB), 52 km from the middle of the area, began a volume at 21:54 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.

Severe Thunderstorm Watch 615Jul 6, 7:25 PM CDT

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 9.9 hours before the alert went out and 244 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: 200 J/kg
Mixed-layer CIN: -272 J/kg
Mixed-layer LCL: 1494 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 143 m²/s²
0-3 km storm-relative helicity: 196 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

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
Jul 5, 9:57 PM CDT	Mesoscale Discussion	SPC	Carson, Dallam, Deaf Smith, Gray, Hansford, Hartley and 8 more	93 min
Jul 6, 2:15 AM CDT	Severe Thunderstorm Watch	SPC	Briscoe, Childress, Cottle, Crosby, Dickens, Floyd and 12 more	4 hr
Jul 6, 2:16 AM CDT	Mesoscale Discussion	SPC	Borden, Cottle, Crosby, Dawson, Dickens, Fisher and 16 more	29 min
Jul 6, 4:44 AM CDT	Mesoscale Discussion	SPC	Briscoe, Childress, Cottle, Crosby, Dickens, Floyd and 13 more	61 min
Jul 6, 1:23 PM CDT	Mesoscale Discussion	SPC	Anderson, Angelina, Austin, Bastrop, Bexar, Blanco and 52 more	2 hr
Jul 6, 2:05 PM CDT	Severe Thunderstorm Watch	SPC	Dallam, Deaf Smith, Hartley, Oldham, Parmer	8 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; radar from the NEXRAD Level II archive.