Alert archive / Texas / Mesoscale Discussions in 2003

Mesoscale Discussion 1430

June 20, 200313 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 20, 2003, 4:34 PM CDT for 13 counties in Texas. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued: Jun 20, 2003, 4:34 PM CDT (21:34 UTC)
Expired: Jun 20, 2003, 6:30 PM CDT
In force: 116 min
Issued by: the Storm Prediction Center

Counties Andrews County, TX, Crane County, TX, Crockett County, TX, Ector County, TX, Loving County, TX, Midland County, TX, Pecos County, TX, Reagan County, TX, Reeves County, TX, Terrell County, TX, Upton County, TX, Ward County, TX, Winkler County, TX

The radar

The Midland/Odessa radar (KMAF), 117 km from the middle of the area, began a volume at 21:37 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

Midland Regional, TX (KMAF), launched 12:00Z, 9.6 hours before the alert went out and 117 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: 536 J/kg
Mixed-layer CIN: -151 J/kg
Mixed-layer LCL: 1339 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 100 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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, 2:28 AM CDT	Mesoscale Discussion	SPC	Briscoe, Cochran, Crosby, Dickens, Floyd, Garza and 9 more	92 min
Jun 20, 12:14 PM CDT	Mesoscale Discussion	SPC	Culberson, Loving, Reeves, Ward, Winkler	2 hr
Jun 20, 3:21 PM CDT	Mesoscale Discussion	SPC	Dallam, Deaf Smith, Hartley, Oldham, Parmer, Sherman	114 min
Jun 20, 3:45 PM CDT	Tornado Watch	SPC	Armstrong, Bailey, Briscoe, Carson, Castro, Cochran and 22 more	6 hr
Jun 20, 6:30 PM CDT	Mesoscale Discussion	SPC	Armstrong, Bailey, Briscoe, Carson, Castro, Childress and 35 more	2 hr

Nearby

Mesoscale Discussions in Texas, 2003 Every mesoscale discussion in 2003

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.