Alert archive / Texas / Mesoscale Discussions in 2003

Mesoscale Discussion 1220

June 3, 200314 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 3, 2003, 1:02 PM CDT for 14 counties in Texas. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued: Jun 3, 2003, 1:02 PM CDT (18:02 UTC)
Expired: Jun 3, 2003, 3:00 PM CDT
In force: 118 min
Issued by: the Storm Prediction Center

Counties Bandera County, TX, Blanco County, TX, Comal County, TX, Edwards County, TX, Gillespie County, TX, Hays County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Llano County, TX, Mason County, TX, Menard County, TX, Real County, TX, Sutton County, TX

The radar

The Austin/San Antonio radar (KEWX), 121 km from the middle of the area, began a volume at 18:03 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 6.0 hours before the alert went out and 182 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: 2861 J/kg
Mixed-layer CIN: -183 J/kg
Mixed-layer LCL: 887 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 107 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

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 2, 7:02 PM CDT	Mesoscale Discussion	SPC	Atascosa, Brazoria, Chambers, Colorado, DeWitt, Fort Bend and 12 more	118 min
Jun 2, 8:31 PM CDT	Mesoscale Discussion	SPC	Dallam, Deaf Smith, Hartley, Oldham	89 min
Jun 2, 11:05 PM CDT	Severe Thunderstorm Watch	SPC	Armstrong, Bailey, Briscoe, Carson, Castro, Childress and 21 more	5 hr
Jun 3, 1:06 AM CDT	Mesoscale Discussion	SPC	Armstrong, Briscoe, Carson, Castro, Childress, Cottle and 18 more	114 min
Jun 3, 5:48 AM CDT	Mesoscale Discussion	SPC	Armstrong, Briscoe, Carson, Cottle, Crosby, Dickens and 11 more	117 min
Jun 3, 1:25 PM CDT	Severe Thunderstorm Watch	SPC	Atascosa, Bandera, Bastrop, Bexar, Blanco, Caldwell and 18 more	6 hr
Jun 3, 1:34 PM CDT	Mesoscale Discussion	SPC	Bailey, Castro, Cochran, Crosby, Deaf Smith, Hale and 9 more	116 min
Jun 3, 3:20 PM CDT	Tornado Watch	SPC	Bailey, Borden, Callahan, Castro, Cochran, Coke and 33 more	6 hr
Jun 3, 3:55 PM CDT	Severe Thunderstorm Watch	SPC	Andrews, Crane, Crockett, Ector, Edwards, Gaines and 13 more	5 hr
Jun 3, 4:40 PM CDT	Severe Thunderstorm Watch	SPC	Bee, Brooks, Cameron, Dimmit, Duval, Hidalgo and 13 more	5 hr
Jun 3, 5:43 PM CDT	Mesoscale Discussion	SPC	Atascosa, Bandera, Bastrop, Bexar, Blanco, Caldwell and 15 more	62 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.