Alert archive / Texas / Mesoscale Discussions in 2025
Mesoscale Discussion 2113
The Storm Prediction Center issued this mesoscale discussion at Sep 21, 2025, 5:47 PM CDT for 4 counties in Oklahoma; 19 counties in Texas. It was in force for 118 min.
The area
The outline as issued.
The facts
- Issued
- Sep 21, 2025, 5:47 PM CDT (22:47 UTC)
- Expired
- Sep 21, 2025, 7:45 PM CDT
- In force
- 118 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 616
All 23 counties
Bryan County, OK, Johnston County, OK, Love County, OK, Marshall County, OK, Archer County, TX, Callahan County, TX, Clay County, TX, Collin County, TX, Cooke County, TX, Denton County, TX, Grayson County, TX, Haskell County, TX, Jack County, TX, Jones County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Shackelford County, TX, Stephens County, TX, Taylor County, TX, Throckmorton County, TX, Wise County, TX, Young County, TX
The radar
The Dyess AFB radar (KDYX), 108 km from the middle of the area, began a volume at 22:48 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
Fort Worth, TX (KFWD), launched 12:00Z, 10.8 hours before the alert went out and 119 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
- 705 J/kg
- Mixed-layer CIN
- -97 J/kg
- Mixed-layer LCL
- 1183 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- -30 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
948 ACUS11 KWNS 212248 SWOMCD SPC MCD 212247 OKZ000-TXZ000-220045- Mesoscale Discussion 2113 NWS Storm Prediction Center Norman OK 0547 PM CDT Sun Sep 21 2025 Areas affected...Southern Plains Concerning...Severe Thunderstorm Watch 616... Valid 212247Z - 220045Z The severe weather threat for Severe Thunderstorm Watch 616 continues. SUMMARY...Strong-severe thunderstorm clusters will continue propagating southeast across ww616. Wind and hail remain the primary threats. DISCUSSION...Water-vapor imagery depicts a well-defined midlevel vort over northeast OK digging southeast toward northwest AR. Southwestern influence of the associated trough appears to be aiding multiple thunderstorm clusters across portions of north Texas into extreme south central Oklahoma. Strong boundary-layer heating has proven instrumental in destabilization near the frontal zone and 0-3km lapse rates are quite steep across north Texas. Latest MRMS data suggests at least three robust updrafts are likely generating large hail, one over eastern Young County, northern Denton County, and southeast Grayson County. Northwesterly flow is gradually strengthen over the next several hours, so this activity should continue propagating southeast toward the I-20 corridor, including the Metroplex. Hail and wind can be expected with the strongest storms. ..Darrow.. 09/21/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...FWD...OUN...SJT... LAT...LON 33329997 34459622 33149621 32009997 33329997 MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 95 MPH MOST PROBABLE PEAK WIND GUST...65-80 MPH MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 9:02 PM CDT | Mesoscale Discussion | SPC | Cherokee, Delaware, Mayes, Nowata, Rogers, Tulsa and 2 more | 118 min |
| Sep 21, 3:03 PM CDT | Mesoscale Discussion | SPC | Adair, Cherokee, Choctaw, Delaware, Haskell, Latimer and 9 more | 117 min |
| Sep 21, 3:46 PM CDT | Mesoscale Discussion | SPC | Bryan, Carter, Jefferson, Johnston, Love, Marshall and 1 more | 119 min |
| Sep 21, 4:17 PM CDT | Severe Thunderstorm Watch | SPC | Atoka, Bryan, Johnston, Love, Marshall | 4 hr |
Nearby
Mesoscale Discussions in Texas, 2025Mesoscale Discussions in Oklahoma, 2025Every mesoscale discussion in 2025
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.