Alert archive / Texas / Mesoscale Discussions in 2026
Mesoscale Discussion 813
The Storm Prediction Center issued this mesoscale discussion at May 21, 2026, 2:02 PM CDT for 21 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 21, 2026, 2:02 PM CDT (19:02 UTC)
- Expired
- May 21, 2026, 4:30 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch unlikely
- Chance of a watch
- 20%
All 21 counties
Crane County, TX, Crockett County, TX, Ector County, TX, Edwards County, TX, Glasscock County, TX, Irion County, TX, Kimble County, TX, Martin County, TX, Menard County, TX, Midland County, TX, Pecos County, TX, Reagan County, TX, Real County, TX, Schleicher County, TX, Sterling County, TX, Sutton County, TX, Terrell County, TX, Tom Green County, TX, Upton County, TX, Val Verde County, TX, Ward County, TX
The radar
The Midland/Odessa radar (KMAF), 99 km from the middle of the area, began a volume at 19:04 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
Midland Regional, TX (KMAF), launched 12:00Z, 7.0 hours before the alert went out and 100 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
- 1423 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 551 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 131 m²/s²
- 0-3 km storm-relative helicity
- 144 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 4.3
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 21, 1:48 AM CDT | Mesoscale Discussion | SPC | Aransas, Bee, Brooks, Cameron, Duval, Goliad and 15 more | 117 min |
| May 21, 1:10 PM CDT | Mesoscale Discussion | SPC | Dallam, Hartley | 2 hr |
| May 21, 2:19 PM CDT | Severe Thunderstorm Watch | SPC | Dallam, Hansford, Hartley, Moore, Sherman | 8 hr |
| May 21, 3:35 PM CDT | Mesoscale Discussion | SPC | Bailey, Cochran, Gaines, Parmer, Yoakum | 115 min |
| May 21, 4:02 PM CDT | Mesoscale Discussion | SPC | Dallam, Hansford, Hartley, Moore, Sherman | 88 min |
| May 21, 5:34 PM CDT | Mesoscale Discussion | SPC | Bandera, Bell, Bexar, Blanco, Burnet, Caldwell and 19 more | 86 min |
| May 21, 5:46 PM CDT | Mesoscale Discussion | SPC | Dallam | 119 min |
| May 21, 6:10 PM CDT | Mesoscale Discussion | SPC | Bailey, Castro, Cochran, Deaf Smith, Hartley, Lamb and 3 more | 95 min |
Nearby
Mesoscale Discussions in Texas, 2026Every mesoscale discussion in 2026
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.