Alert archive / Texas / Mesoscale Discussions in 2003

Mesoscale Discussion 1464

June 22, 200320 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 22, 2003, 8:16 PM CDT for 20 counties in Texas. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued: Jun 22, 2003, 8:16 PM CDT (01:16 UTC)
Expired: Jun 22, 2003, 9:45 PM CDT
In force: 89 min
Issued by: the Storm Prediction Center

Counties Armstrong County, TX, Briscoe County, TX, Carson County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Garza County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Kent County, TX, Lubbock County, TX, Lynn County, TX, Motley County, TX, Swisher County, TX, Wheeler County, TX

The radar

The Lubbock radar (KLBB), 56 km from the middle of the area, began a volume at 01:17 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

Amarillo Airport, TX (KAMA), launched 00:00Z, 1.3 hours before the alert went out and 142 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: 901 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 2900 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 151 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.7

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 22, 7:16 PM CDT	Mesoscale Discussion	SPC	Andrews, Borden, Crane, Crockett, Dawson, Ector and 12 more	119 min
Jun 23, 2:17 PM CDT	Mesoscale Discussion	SPC	Andrews, Bailey, Castro, Cochran, Deaf Smith, Ector and 12 more	118 min
Jun 23, 3:20 PM CDT	Severe Thunderstorm Watch	SPC	Andrews, Bailey, Castro, Cochran, Dallam, Deaf Smith and 19 more	6 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.