Alert archive / Texas / Mesoscale Discussions in 2020
Mesoscale Discussion 755
The Storm Prediction Center issued this mesoscale discussion at May 28, 2020, 6:29 PM CDT for 28 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 28, 2020, 6:29 PM CDT (23:29 UTC)
- Expired
- May 28, 2020, 8:30 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 233
All 28 counties
Aransas County, TX, Atascosa County, TX, Bee County, TX, Caldwell County, TX, Calhoun County, TX, Colorado County, TX, DeWitt County, TX, Dimmit County, TX, Frio County, TX, Goliad County, TX, Gonzales County, TX, Jackson County, TX, Jim Wells County, TX, Karnes County, TX, La Salle County, TX, Lavaca County, TX, Live Oak County, TX, Matagorda County, TX, Maverick County, TX, McMullen County, TX, Nueces County, TX, Refugio County, TX, San Patricio County, TX, Victoria County, TX, Webb County, TX, Wharton County, TX, Wilson County, TX, Zavala County, TX
The radar
The Austin/San Antonio radar (KEWX), 98 km from the middle of the area, began a volume at 23:30 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
Del Rio, TX (KDRT), launched 12:00Z, 11.5 hours before the alert went out and 242 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, 1:44 PM CDT | Mesoscale Discussion | SPC | Bandera, Bexar, Concho, Crockett, Edwards, Gillespie and 19 more | 2 hr |
| 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 |
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.