Alert archive / Texas / Mesoscale Discussions in 2003

Mesoscale Discussion 1228

June 4, 200318 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 4, 2003, 2:52 AM CDT for 18 counties in Texas. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued: Jun 4, 2003, 2:52 AM CDT (07:52 UTC)
Expired: Jun 4, 2003, 4:15 AM CDT
In force: 83 min
Issued by: the Storm Prediction Center

Counties Austin County, TX, Bastrop County, TX, Brazos County, TX, Burleson County, TX, Colorado County, TX, DeWitt County, TX, Fayette County, TX, Gonzales County, TX, Grimes County, TX, Jackson County, TX, Lavaca County, TX, Lee County, TX, Milam County, TX, Victoria County, TX, Walker County, TX, Waller County, TX, Washington County, TX, Williamson County, TX

The radar

The Austin/San Antonio radar (KEWX), 103 km from the middle of the area, began a volume at 07:55 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

Corpus Christi, TX (KCRP), launched 00:00Z, 7.9 hours before the alert went out and 239 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: 3023 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 1042 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 49 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 3, 7:50 PM CDT	Mesoscale Discussion	SPC	Andrews, Bailey, Borden, Briscoe, Callahan, Castro and 57 more	55 min
Jun 3, 8:30 PM CDT	Severe Thunderstorm Watch	SPC	Bandera, Blanco, Bosque, Brown, Burnet, Callahan and 38 more	6 hr
Jun 3, 9:05 PM CDT	Severe Thunderstorm Watch	SPC	Bailey, Briscoe, Castro, Childress, Cochran, Cottle and 18 more	3 hr
Jun 3, 11:37 PM CDT	Mesoscale Discussion	SPC	Bandera, Bell, Blanco, Bosque, Brown, Burnet and 35 more	113 min
Jun 4, 12:35 AM CDT	Severe Thunderstorm Watch	SPC	Atascosa, Austin, Bastrop, Bexar, Brazos, Burleson and 23 more	5 hr
Jun 4, 1:34 AM CDT	Mesoscale Discussion	SPC	Armstrong, Briscoe, Carson, Castro, Childress, Collingsworth and 23 more	116 min
Jun 4, 12:12 PM CDT	Mesoscale Discussion	SPC	Bailey, Cochran, Dallam, Deaf Smith, Hartley, Oldham and 2 more	2 hr
Jun 4, 3:20 PM CDT	Tornado Watch	SPC	Bailey, Castro, Cochran, Dallam, Deaf Smith, Hartley and 8 more	6 hr
Jun 4, 3:27 PM CDT	Mesoscale Discussion	SPC	Dallam, Deaf Smith, Hartley, Oldham	93 min
Jun 4, 6:31 PM CDT	Mesoscale Discussion	SPC	Armstrong, Bailey, Briscoe, Castro, Cochran, Cottle and 25 more	89 min

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.