Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 1369

June 21, 20047 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 21, 2004, 5:21 PM CDT for 7 counties in Texas. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued: Jun 21, 2004, 5:21 PM CDT (22:21 UTC)
Expired: Jun 21, 2004, 6:45 PM CDT
In force: 84 min
Issued by: the Storm Prediction Center

Counties Brown County, TX, Comanche County, TX, Eastland County, TX, Erath County, TX, Hamilton County, TX, Mills County, TX, Somervell County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 10.4 hours before the alert went out and 146 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: 1714 J/kg
Mixed-layer CIN: -165 J/kg
Mixed-layer LCL: 1017 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 86 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

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
Jun 20, 8:39 PM CDT	Mesoscale Discussion	SPC	Armstrong, Carson, Collingsworth, Deaf Smith, Donley, Gray and 12 more	2 hr
Jun 20, 9:52 PM CDT	Mesoscale Discussion	SPC	Armstrong, Carson, Collingsworth, Deaf Smith, Donley, Gray and 13 more	83 min
Jun 21, 2:25 PM CDT	Mesoscale Discussion	SPC	Armstrong, Briscoe, Carson, Castro, Childress, Collingsworth and 23 more	95 min
Jun 21, 2:36 PM CDT	Mesoscale Discussion	SPC	Bowie, Callahan, Camp, Cass, Coleman, Collin and 41 more	84 min
Jun 21, 3:45 PM CDT	Severe Thunderstorm Watch	SPC	Armstrong, Carson, Dallam, Deaf Smith, Hartley, Hutchinson and 5 more	5 hr
Jun 21, 6:57 PM CDT	Mesoscale Discussion	SPC	Armstrong, Carson, Dallam, Deaf Smith, Donley, Hartley and 6 more	93 min

Nearby

Mesoscale Discussions in Texas, 2004 Every mesoscale discussion in 2004

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.