Alert archive / Texas / Mesoscale Discussions in 2020
Mesoscale Discussion 573
The Storm Prediction Center issued this mesoscale discussion at May 12, 2020, 2:12 PM CDT for 22 counties in Texas. It was in force for 93 min.
The area
The outline as issued.
The facts
- Issued
- May 12, 2020, 2:12 PM CDT (19:12 UTC)
- Expired
- May 12, 2020, 3:45 PM CDT
- In force
- 93 min
- Issued by
- the Storm Prediction Center
All 22 counties
Bastrop County, TX, Bexar County, TX, Blanco County, TX, Burleson County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, DeWitt County, TX, Fayette County, TX, Gillespie County, TX, Gonzales County, TX, Guadalupe County, TX, Hays County, TX, Karnes County, TX, Kendall County, TX, Lavaca County, TX, Lee County, TX, Milam County, TX, Travis County, TX, Washington County, TX, Williamson County, TX, Wilson County, TX
The radar
The Austin/San Antonio radar (KEWX), 29 km from the middle of the area, began a volume at 19:13 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
Corpus Christi, TX (KCRP), launched 12:00Z, 7.2 hours before the alert went out and 246 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
- 1021 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 847 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 155 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 5.5
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 11, 8:42 PM CDT | Mesoscale Discussion | SPC | Crane, Pecos, Terrell, Upton, Ward | 93 min |
| May 11, 8:45 PM CDT | Mesoscale Discussion | SPC | Armstrong, Briscoe, Carson, Castro, Childress, Cochran and 34 more | 90 min |
| May 11, 10:39 PM CDT | Mesoscale Discussion | SPC | Borden, Briscoe, Childress, Cottle, Crosby, Dawson and 15 more | 96 min |
| May 12, 10:00 AM CDT | Mesoscale Discussion | SPC | Bastrop, Bexar, Blanco, Burleson, Burnet, Caldwell and 11 more | 2 hr |
| May 12, 10:48 AM CDT | Tornado Watch | SPC | Bastrop, Bexar, Blanco, Caldwell, Comal, Fayette and 8 more | 6 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.