Alert archive / Texas / Mesoscale Discussions in 2005

Mesoscale Discussion 1652

July 4, 200528 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jul 4, 2005, 9:41 PM CDT for 28 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jul 4, 2005, 9:41 PM CDT (02:41 UTC)
Expired: Jul 4, 2005, 11:45 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 28 counties

Archer County, TX, Baylor County, TX, Camp County, TX, Clay County, TX, Collin County, TX, Cooke County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Fannin County, TX, Franklin County, TX, Grayson County, TX, Hopkins County, TX, Hunt County, TX, Jack County, TX, Lamar County, TX, Montague County, TX, Rains County, TX, Red River County, TX, Rockwall County, TX, Tarrant County, TX, Throckmorton County, TX, Titus County, TX, Upshur County, TX, Wichita County, TX, Wise County, TX, Wood County, TX, Young County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 85 km from the middle of the area, began a volume at 02:42 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, 2.7 hours before the alert went out and 62 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: 1602 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 2127 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 118 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.3

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 4, 7:15 PM CDT	Severe Thunderstorm Watch	SPC	Archer, Baylor, Camp, Clay, Collin, Cooke and 23 more	5 hr
Jul 4, 7:25 PM CDT	Severe Thunderstorm Watch	SPC	Borden, Callahan, Coke, Concho, Fisher, Glasscock and 14 more	6 hr
Jul 4, 9:21 PM CDT	Mesoscale Discussion	SPC	Borden, Callahan, Coke, Coleman, Concho, Fisher and 15 more	114 min
Jul 4, 9:23 PM CDT	Mesoscale Discussion	SPC	Bailey, Castro, Cochran, Deaf Smith, Hale, Hockley and 2 more	67 min
Jul 5, 1:48 AM CDT	Mesoscale Discussion	SPC	Andrews, Borden, Crosby, Dawson, Dickens, Ector and 15 more	27 min
Jul 5, 2:00 AM CDT	Severe Thunderstorm Watch	SPC	Andrews, Borden, Cochran, Crosby, Dawson, Dickens and 16 more	4 hr
Jul 5, 3:58 AM CDT	Mesoscale Discussion	SPC	Andrews, Borden, Cochran, Crosby, Dawson, Dickens and 16 more	62 min
Jul 5, 2:10 PM CDT	Severe Thunderstorm Watch	SPC	Dallam, Hartley	8 hr
Jul 5, 6:06 PM CDT	Mesoscale Discussion	SPC	Hansford, Hemphill, Hutchinson, Lipscomb, Moore, Ochiltree and 2 more	84 min

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.