Alert archive / Texas / Mesoscale Discussions in 2020
Mesoscale Discussion 753
The Storm Prediction Center issued this mesoscale discussion at May 28, 2020, 1:44 PM CDT for 25 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 28, 2020, 1:44 PM CDT (18:44 UTC)
- Expired
- May 28, 2020, 3:45 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch possible
- Chance of a watch
- 40%
All 25 counties
Bandera County, TX, Bexar County, TX, Concho County, TX, Crockett County, TX, Edwards County, TX, Gillespie County, TX, Irion County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Kinney County, TX, Llano County, TX, Mason County, TX, McCulloch County, TX, Medina County, TX, Menard County, TX, Reagan County, TX, Real County, TX, Schleicher County, TX, Sutton County, TX, Terrell County, TX, Tom Green County, TX, Upton County, TX, Uvalde County, TX, Val Verde County, TX
The radar
The San Angelo radar (KSJT), 96 km from the middle of the area, began a volume at 18:43 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
Del Rio, TX (KDRT), launched 12:00Z, 6.7 hours before the alert went out and 130 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
- 1784 J/kg
- Mixed-layer CIN
- -245 J/kg
- Mixed-layer LCL
- 743 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 225 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.6
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, 7:11 PM CDT | Mesoscale Discussion | SPC | Bexar, Comal, Guadalupe, Kendall, Wilson | 2 hr |
| May 27, 9:35 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bexar, DeWitt, Frio, Gonzales and 5 more | 115 min |
| May 28, 2:26 PM CDT | Severe Thunderstorm Watch | SPC | Atascosa, Bandera, Bexar, Blanco, Comal, Dimmit and 16 more | 5 hr |
| May 28, 3:01 PM CDT | Mesoscale Discussion | SPC | Galveston | 119 min |
| May 28, 6:29 PM CDT | Mesoscale Discussion | SPC | Aransas, Atascosa, Bee, Caldwell, Calhoun, Colorado and 22 more | 2 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.