Alert archive / Texas / Mesoscale Discussions in 2007

Mesoscale Discussion 987

June 3, 200716 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 3, 2007, 3:55 PM CDT for 16 counties in Texas. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued: Jun 3, 2007, 3:55 PM CDT (20:55 UTC)
Expired: Jun 3, 2007, 5:30 PM CDT
In force: 95 min
Issued by: the Storm Prediction Center

Counties Bell County, TX, Brazos County, TX, Coryell County, TX, Falls County, TX, Grimes County, TX, Lampasas County, TX, Leon County, TX, Limestone County, TX, Madison County, TX, McLennan County, TX, Milam County, TX, Polk County, TX, Robertson County, TX, San Jacinto County, TX, Trinity County, TX, Walker County, TX

The radar

The Ft Hood radar (KGRK), 104 km from the middle of the area, began a volume at 20:55 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 watches that followed

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

Severe Thunderstorm Watch 342Jun 3, 5:45 PM CDT

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 8.9 hours before the alert went out and 222 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: 1124 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 1216 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 75 m²/s²
0-3 km storm-relative helicity: 70 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.8

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, 7:28 PM CDT	Mesoscale Discussion	SPC	Armstrong, Bailey, Briscoe, Carson, Castro, Childress and 29 more	62 min
Jun 2, 9:45 PM CDT	Mesoscale Discussion	SPC	Bailey, Castro, Crosby, Garza, Hale, Hockley and 5 more	60 min
Jun 2, 10:36 PM CDT	Tornado Watch	SPC	Andrews, Bailey, Borden, Castro, Cochran, Crosby and 16 more	4 hr
Jun 3, 1:17 AM CDT	Mesoscale Discussion	SPC	Andrews, Bailey, Borden, Castro, Cochran, Coke and 32 more	58 min
Jun 3, 2:23 AM CDT	Mesoscale Discussion	SPC	Archer, Armstrong, Baylor, Childress, Clay, Collingsworth and 11 more	67 min
Jun 3, 2:58 AM CDT	Severe Thunderstorm Watch	SPC	Archer, Baylor, Clay, Foard, Hardeman, Knox and 2 more	5 hr
Jun 3, 3:01 AM CDT	Mesoscale Discussion	SPC	Coke, Crane, Crockett, Ector, Glasscock, Irion and 7 more	89 min
Jun 3, 3:38 AM CDT	Mesoscale Discussion	SPC	Borden, Crosby, Dawson, Dickens, Gaines, Garza and 6 more	67 min
Jun 3, 5:32 AM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Clay, Wichita	58 min
Jun 3, 7:04 AM CDT	Mesoscale Discussion	SPC	Clay, Collin, Cooke, Dallas, Delta, Denton and 19 more	56 min
Jun 3, 8:37 AM CDT	Severe Thunderstorm Watch	SPC	Anderson, Angelina, Bosque, Cherokee, Ellis, Falls and 31 more	5 hr
Jun 3, 11:47 AM CDT	Mesoscale Discussion	SPC	Angelina, Jasper, Nacogdoches, Newton, Panola, Polk and 6 more	58 min
Jun 3, 12:22 PM CDT	Severe Thunderstorm Watch	SPC	Hardin, Jasper, Newton, Orange, Tyler	6 hr
Jun 3, 12:42 PM CDT	Mesoscale Discussion	SPC	Andrews, Crane, Culberson, Ector, Gaines, Glasscock and 9 more	93 min
Jun 3, 1:28 PM CDT	Tornado Watch	SPC	Andrews, Brewster, Crane, Culberson, Ector, Gaines and 14 more	9 hr
Jun 3, 1:42 PM CDT	Mesoscale Discussion	SPC	Dallam, Deaf Smith, Hartley, Oldham	93 min
Jun 3, 2:43 PM CDT	Severe Thunderstorm Watch	SPC	Dallam, Deaf Smith, Hartley, Moore, Oldham, Potter and 2 more	7 hr
Jun 3, 3:29 PM CDT	Mesoscale Discussion	SPC	Brown, Coke, Coleman, Concho, Irion, McCulloch and 10 more	31 min
Jun 3, 3:44 PM CDT	Severe Thunderstorm Watch	SPC	Brown, Coke, Coleman, Concho, Crockett, Irion and 10 more	6 hr
Jun 3, 3:59 PM CDT	Mesoscale Discussion	SPC	Bailey, Borden, Cochran, Crosby, Dickens, Floyd and 12 more	91 min
Jun 3, 5:09 PM CDT	Mesoscale Discussion	SPC	Andrews, Brewster, Crane, Culberson, Ector, Gaines and 14 more	66 min
Jun 3, 5:45 PM CDT	Severe Thunderstorm Watch	SPC	Austin, Bastrop, Bell, Blanco, Brazoria, Brazos and 37 more	7 hr
Jun 3, 5:48 PM CDT	Mesoscale Discussion	SPC	Jefferson, Orange, Sabine, San Augustine	87 min
Jun 3, 5:51 PM CDT	Mesoscale Discussion	SPC	Brown, Coke, Coleman, Concho, Crockett, Irion and 10 more	54 min
Jun 3, 6:47 PM CDT	Mesoscale Discussion	SPC	Bailey, Castro, Cochran, Dallam, Deaf Smith, Hale and 10 more	58 min

Nearby

Mesoscale Discussions in Texas, 2007 Every mesoscale discussion in 2007

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.