Alert archive / Texas / Mesoscale Discussions in 2020
Mesoscale Discussion 742
The Storm Prediction Center issued this mesoscale discussion at May 27, 2020, 12:44 PM CDT for 17 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 27, 2020, 12:44 PM CDT (17:44 UTC)
- Expired
- May 27, 2020, 2:45 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch likely
- Chance of a watch
- 80%
Counties Brown County, TX, Burnet County, TX, Callahan County, TX, Coleman County, TX, Comanche County, TX, Concho County, TX, Coryell County, TX, Eastland County, TX, Hamilton County, TX, Lampasas County, TX, Llano County, TX, McCulloch County, TX, Menard County, TX, Mills County, TX, Runnels County, TX, San Saba County, TX, Taylor County, TX
The radar
The Dyess AFB radar (KDYX), 89 km from the middle of the area, began a volume at 17:45 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 12:00Z, 5.7 hours before the alert went out and 200 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
- 32 J/kg
- Mixed-layer CIN
- -227 J/kg
- Mixed-layer LCL
- 1794 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 172 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| May 27, 12:08 PM CDT | Mesoscale Discussion | SPC | Austin, Bastrop, Bell, Brazos, Burleson, Burnet and 16 more | 2 hr |
| May 27, 1:24 PM CDT | Severe Thunderstorm Watch | SPC | Austin, Bastrop, Bell, Blanco, Bosque, Brazoria and 42 more | 9 hr |
| May 27, 1:47 PM CDT | Severe Thunderstorm Watch | SPC | Brown, Callahan, Coleman, Concho, Kimble, McCulloch and 5 more | 7 hr |
| May 27, 2:33 PM CDT | Mesoscale Discussion | SPC | Austin, Colorado, Fayette, Fort Bend, Harris, Lee and 3 more | 87 min |
| May 27, 3:40 PM CDT | Mesoscale Discussion | SPC | Brown, Burnet, Callahan, Coleman, Concho, Lampasas and 6 more | 95 min |
| May 27, 5:05 PM CDT | Mesoscale Discussion | SPC | Bexar, Blanco, Caldwell, Comal, DeWitt, Gillespie and 13 more | 115 min |
| May 27, 5:23 PM CDT | Severe Thunderstorm Watch | SPC | Atascosa, Bandera, Bastrop, Bexar, Blanco, Burnet and 22 more | 8 hr |
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.