Alert archive / Texas / Mesoscale Discussions in 2022
Mesoscale Discussion 515
The Storm Prediction Center issued this mesoscale discussion at Apr 17, 2022, 3:33 PM CDT for 18 counties in Texas. It was in force for 117 min.
The area
The outline as issued.
The facts
- Issued
- Apr 17, 2022, 3:33 PM CDT (20:33 UTC)
- Expired
- Apr 17, 2022, 5:30 PM CDT
- In force
- 117 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 136
Counties Bandera County, TX, Bastrop County, TX, Bexar County, TX, Blanco County, TX, Caldwell County, TX, Comal County, TX, Gillespie County, TX, Gonzales County, TX, Guadalupe County, TX, Hays County, TX, Kendall County, TX, Kerr County, TX, Medina County, TX, Real County, TX, Travis County, TX, Uvalde County, TX, Williamson County, TX, Wilson County, TX
The radar
The Austin/San Antonio radar (KEWX), 48 km from the middle of the area, began a volume at 20:36 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, 8.6 hours before the alert went out and 235 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
- 1796 J/kg
- Mixed-layer CIN
- -174 J/kg
- Mixed-layer LCL
- 716 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 144 m²/s²
- 0-3 km storm-relative helicity
- 193 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.2
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 |
|---|---|---|---|---|
| Apr 16, 7:25 PM CDT | Mesoscale Discussion | SPC | Bandera, Bastrop, Bexar, Blanco, Burnet, Caldwell and 16 more | 2 hr |
| Apr 17, 11:24 AM CDT | Mesoscale Discussion | SPC | Cass, Gregg, Harrison, Marion, Morris, Panola and 3 more | 3 hr |
| Apr 17, 12:29 PM CDT | Severe Thunderstorm Watch | SPC | Camp, Cass, Gregg, Harrison, Marion, Morris and 6 more | 7 hr |
| Apr 17, 12:51 PM CDT | Mesoscale Discussion | SPC | Bandera, Bastrop, Bell, Bexar, Blanco, Burnet and 20 more | 114 min |
| Apr 17, 1:42 PM CDT | Severe Thunderstorm Watch | SPC | Atascosa, Bandera, Bastrop, Bexar, Blanco, Burnet and 16 more | 6 hr |
| Apr 17, 2:55 PM CDT | Mesoscale Discussion | SPC | Shelby | 3 hr |
| Apr 17, 4:32 PM CDT | Mesoscale Discussion | SPC | Angelina, Brazos, Burleson, Grimes, Houston, Leon and 11 more | 88 min |
| Apr 17, 5:27 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bexar, Frio, Medina, Uvalde, Wilson and 1 more | 93 min |
Nearby
Mesoscale Discussions in Texas, 2022Every mesoscale discussion in 2022
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.