Alert archive / Texas / Mesoscale Discussions in 2023

Mesoscale Discussion 970

June 10, 202320 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 10, 2023, 7:47 PM CDT for 20 counties in Texas. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued: Jun 10, 2023, 7:47 PM CDT (00:47 UTC)
Expired: Jun 10, 2023, 9:15 PM CDT
In force: 88 min
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch likely
Chance of a watch: 80%

Counties Austin County, TX, Brazoria County, TX, Brazos County, TX, Chambers County, TX, Fort Bend County, TX, Galveston County, TX, Grimes County, TX, Hardin County, TX, Harris County, TX, Jasper County, TX, Jefferson County, TX, Liberty County, TX, Montgomery County, TX, Orange County, TX, Polk County, TX, San Jacinto County, TX, Tyler County, TX, Walker County, TX, Waller County, TX, Washington County, TX

The radar

The Houston radar (KHGX), 68 km from the middle of the area, began a volume at 00:50 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 264Jun 10, 8:10 PM CDT

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 0.8 hours before the alert went out and 171 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: 1116 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 1307 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 31 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 3.9

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 10, 8:09 PM CDT	Severe Thunderstorm Watch	SPC	Austin, Brazoria, Brazos, Burleson, Chambers, Fort Bend and 13 more	5 hr
Jun 10, 11:10 PM CDT	Mesoscale Discussion	SPC	Austin, Brazoria, Brazos, Burleson, Fort Bend, Galveston and 5 more	95 min
Jun 11, 3:18 PM CDT	Severe Thunderstorm Watch	SPC	Dallam, Deaf Smith, Hartley, Oldham, Potter, Randall	7 hr
Jun 11, 4:02 PM CDT	Mesoscale Discussion	SPC	Bosque, Brown, Callahan, Coleman, Collin, Comanche and 24 more	118 min
Jun 11, 4:37 PM CDT	Mesoscale Discussion	SPC	Crane, Crockett, Irion, Pecos, Reagan, Schleicher and 4 more	83 min
Jun 11, 4:37 PM CDT	Severe Thunderstorm Watch	SPC	Bosque, Brown, Callahan, Coleman, Collin, Comanche and 23 more	7 hr
Jun 11, 5:06 PM CDT	Mesoscale Discussion	SPC	Dallam	84 min
Jun 11, 6:45 PM CDT	Mesoscale Discussion	SPC	Bosque, Brown, Callahan, Coleman, Comanche, Coryell and 26 more	2 hr

Nearby

Mesoscale Discussions in Texas, 2023 Every mesoscale discussion in 2023

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.