Alert archive / Texas / Mesoscale Discussions in 2023

Mesoscale Discussion 620

April 26, 20237 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 26, 2023, 3:29 AM CDT for 7 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Apr 26, 2023, 3:29 AM CDT (08:29 UTC)
Expired: Apr 26, 2023, 5:30 AM CDT
In force: 2 hr
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch unlikely
Chance of a watch: 20%

Counties Eastland County, TX, Erath County, TX, Hood County, TX, Palo Pinto County, TX, Parker County, TX, Somervell County, TX, Stephens County, TX

The radar

The Dyess AFB radar (KDYX), 90 km from the middle of the area, began a volume at 08:29 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

Midland Regional, TX (KMAF), launched 00:00Z, 8.5 hours before the alert went out and 374 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3718 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 56 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Apr 25, 9:28 PM CDT	Mesoscale Discussion	SPC	Baylor, Brown, Callahan, Coleman, Cottle, Crosby and 20 more	92 min
Apr 25, 11:18 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Camp, Clay, Collin, Cooke and 30 more	117 min
Apr 25, 11:50 PM CDT	Mesoscale Discussion	SPC	Armstrong, Briscoe, Carson, Castro, Crosby, Deaf Smith and 14 more	115 min
Apr 26, 9:43 AM CDT	Mesoscale Discussion	SPC	Archer, Collin, Cooke, Denton, Grayson, Jack and 5 more	2 hr
Apr 26, 1:20 PM CDT	Mesoscale Discussion	SPC	Bell, Bosque, Brown, Burleson, Burnet, Callahan and 21 more	2 hr
Apr 26, 2:51 PM CDT	Tornado Watch	SPC	Anderson, Bell, Bosque, Brown, Burnet, Callahan and 26 more	7 hr
Apr 26, 4:48 PM CDT	Mesoscale Discussion	SPC	Bosque, Brown, Comanche, Eastland, Erath, Hamilton and 1 more	117 min
Apr 26, 5:01 PM CDT	Mesoscale Discussion	SPC	Angelina, Cherokee, Gregg, Harrison, Houston, Jasper and 11 more	89 min
Apr 26, 6:40 PM CDT	Mesoscale Discussion	SPC	Coryell, Falls, Hill, Leon, Limestone, McLennan	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.