Alert archive / Texas / Mesoscale Discussions in 2003

Mesoscale Discussion 1457

June 22, 2003Beckham County, Greer County, Harmon County, Oklahoma; 18 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 22, 2003, 4:50 PM CDT for Beckham County, Greer County, Harmon County, Oklahoma; 18 counties in Texas. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued: Jun 22, 2003, 4:50 PM CDT (21:50 UTC)
Expired: Jun 22, 2003, 6:15 PM CDT
In force: 85 min
Issued by: the Storm Prediction Center

All 21 counties

Beckham County, OK, Greer County, OK, Harmon County, OK, Briscoe 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, Hall County, TX, Hardeman County, TX, Kent County, TX, King County, TX, Lubbock County, TX, Lynn County, TX, Motley County, TX, Stonewall County, TX, Wheeler County, TX

The radar

The Lubbock radar (KLBB), 92 km from the middle of the area, began a volume at 21:51 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 563Jun 22, 5:50 PM CDT

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 9.8 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: 1126 J/kg
Mixed-layer CIN: -248 J/kg
Mixed-layer LCL: 1656 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 173 m²/s²
0-3 km storm-relative helicity: 230 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 22, 5:50 PM CDT	Severe Thunderstorm Watch	SPC	Armstrong, Briscoe, Childress, Collingsworth, Cottle, Crosby and 12 more	4 hr

Nearby

Mesoscale Discussions in Texas, 2003 Mesoscale Discussions in Oklahoma, 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.