Alert archive / Texas / Mesoscale Discussions in 2020
Mesoscale Discussion 977
The Storm Prediction Center issued this mesoscale discussion at Jun 23, 2020, 1:16 AM CDT for 34 counties in Texas. It was in force for 89 min.
The area
The outline as issued.
The facts
- Issued
- Jun 23, 2020, 1:16 AM CDT (06:16 UTC)
- Expired
- Jun 23, 2020, 2:45 AM CDT
- In force
- 89 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 296
All 34 counties
Archer County, TX, Borden County, TX, Brown County, TX, Callahan County, TX, Clay County, TX, Coke County, TX, Coleman County, TX, Comanche County, TX, Cooke County, TX, Denton County, TX, Eastland County, TX, Erath County, TX, Fisher County, TX, Glasscock County, TX, Hood County, TX, Howard County, TX, Jack County, TX, Jones County, TX, Mitchell County, TX, Montague County, TX, Nolan County, TX, Palo Pinto County, TX, Parker County, TX, Runnels County, TX, Scurry County, TX, Shackelford County, TX, Stephens County, TX, Sterling County, TX, Tarrant County, TX, Taylor County, TX, Throckmorton County, TX, Tom Green County, TX, Wise County, TX, Young County, TX
The radar
The Dyess AFB radar (KDYX), 41 km from the middle of the area, began a volume at 06:18 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
Fort Worth, TX (KFWD), launched 00:00Z, 6.3 hours before the alert went out and 207 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.
- Mixed-layer CAPE
- 1546 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 1516 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 132 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 8:21 PM CDT | Mesoscale Discussion | SPC | Armstrong, Baylor, Briscoe, Carson, Castro, Childress and 26 more | 84 min |
| Jun 22, 9:06 PM CDT | Severe Thunderstorm Watch | SPC | Archer, Bailey, Baylor, Borden, Briscoe, Childress and 41 more | 8 hr |
| Jun 22, 11:24 PM CDT | Mesoscale Discussion | SPC | Archer, Bailey, Baylor, Borden, Briscoe, Childress and 33 more | 2 hr |
| Jun 23, 1:33 AM CDT | Severe Thunderstorm Watch | SPC | Bosque, Brown, Callahan, Coke, Coleman, Collin and 36 more | 6 hr |
| Jun 23, 3:55 AM CDT | Mesoscale Discussion | SPC | Bosque, Brown, Collin, Comanche, Coryell, Dallas and 18 more | 95 min |
Nearby
Mesoscale Discussions in Texas, 2020Every mesoscale discussion in 2020
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.