Alert archive / Texas / Mesoscale Discussions in 2003

Mesoscale Discussion 1243

June 5, 200321 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 5, 2003, 12:03 PM CDT for 21 counties in Texas. It was in force for 57 min.

The area

The outline as issued.

The facts

Issued: Jun 5, 2003, 12:03 PM CDT (17:03 UTC)
Expired: Jun 5, 2003, 1:00 PM CDT
In force: 57 min
Issued by: the Storm Prediction Center

All 21 counties

Austin County, TX, Brazoria County, TX, Calhoun County, TX, Colorado County, TX, DeWitt County, TX, Fayette County, TX, Fort Bend County, TX, Gonzales County, TX, Grimes County, TX, Harris County, TX, Jackson County, TX, Lavaca County, TX, Liberty County, TX, Matagorda County, TX, Montgomery County, TX, San Jacinto County, TX, Victoria County, TX, Walker County, TX, Waller County, TX, Washington County, TX, Wharton County, TX

The radar

The Houston radar (KHGX), 129 km from the middle of the area, began a volume at 17:03 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 12:00Z, 5.1 hours before the alert went out and 232 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: 2833 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 584 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 12 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 2.6

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 4, 8:24 PM CDT	Mesoscale Discussion	SPC	Andrews, Bailey, Borden, Briscoe, Castro, Cochran and 28 more	66 min
Jun 4, 8:55 PM CDT	Severe Thunderstorm Watch	SPC	Andrews, Bailey, Borden, Cochran, Crosby, Dawson and 21 more	5 hr
Jun 4, 10:55 PM CDT	Mesoscale Discussion	SPC	Andrews, Archer, Bailey, Baylor, Borden, Briscoe and 39 more	95 min
Jun 5, 12:58 AM CDT	Mesoscale Discussion	SPC	Andrews, Borden, Callahan, Coke, Coleman, Dawson and 19 more	62 min
Jun 5, 1:20 AM CDT	Severe Thunderstorm Watch	SPC	Brown, Coke, Coleman, Comanche, Concho, Glasscock and 9 more	6 hr
Jun 5, 2:22 AM CDT	Mesoscale Discussion	SPC	Brown, Callahan, Coke, Coleman, Concho, Eastland and 13 more	83 min
Jun 5, 4:40 AM CDT	Mesoscale Discussion	SPC	Bosque, Brown, Burnet, Comanche, Coryell, Erath and 9 more	95 min
Jun 5, 6:35 AM CDT	Severe Thunderstorm Watch	SPC	Bell, Burleson, Burnet, Coryell, Falls, Limestone and 4 more	4 hr
Jun 5, 9:00 AM CDT	Mesoscale Discussion	SPC	Bell, Burleson, Burnet, Coryell, Falls, Freestone and 5 more	60 min
Jun 5, 9:50 AM CDT	Severe Thunderstorm Watch	SPC	Austin, Brazoria, Calhoun, Colorado, DeWitt, Fayette and 17 more	5 hr
Jun 5, 1:29 PM CDT	Mesoscale Discussion	SPC	Brooks, Cameron, Duval, Hidalgo, Jim Hogg, Jim Wells and 8 more	91 min
Jun 5, 3:30 PM CDT	Severe Thunderstorm Watch	SPC	Bailey, Castro, Cochran, Dallam, Deaf Smith, Hartley and 9 more	6 hr
Jun 5, 5:17 PM CDT	Mesoscale Discussion	SPC	Carson, Collingsworth, Donley, Gray, Hemphill, Hutchinson and 4 more	88 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.