Alert archive / Texas / Mesoscale Discussions in 2023
Mesoscale Discussion 604
The Storm Prediction Center issued this mesoscale discussion at Apr 22, 2023, 9:16 PM CDT for 18 counties in Texas. It was in force for 89 min.
The area
The outline as issued.
The facts
- Issued
- Apr 22, 2023, 9:16 PM CDT (02:16 UTC)
- Expired
- Apr 22, 2023, 10:45 PM CDT
- In force
- 89 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch likely
- Chance of a watch
- 80%
Counties Atascosa County, TX, Bandera County, TX, Bexar County, TX, Comal County, TX, Dimmit County, TX, Edwards County, TX, Frio County, TX, Kendall County, TX, Kerr County, TX, Kinney County, TX, La Salle County, TX, Maverick County, TX, McMullen County, TX, Medina County, TX, Real County, TX, Uvalde County, TX, Val Verde County, TX, Zavala County, TX
The radar
The Laughlin AFB radar (KDFX), 23 km from the middle of the area, began a volume at 02:17 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 00:00Z, 2.3 hours before the alert went out and 56 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
- 2062 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 1719 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- -32 m²/s²
- 0-3 km storm-relative helicity
- 78 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.5
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 22, 7:46 PM CDT | Mesoscale Discussion | SPC | Blanco, Brown, Burnet, Coke, Coleman, Concho and 17 more | 89 min |
| Apr 22, 9:47 PM CDT | Severe Thunderstorm Watch | SPC | Atascosa, Bandera, Bexar, Blanco, Caldwell, Comal and 21 more | 7 hr |
| Apr 22, 11:34 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bexar, Comal, Edwards, Frio and 10 more | 86 min |
| Apr 23, 3:13 AM CDT | Mesoscale Discussion | SPC | Aransas, Atascosa, Bandera, Bee, Bexar, Brooks and 26 more | 2 hr |
| Apr 23, 4:54 AM CDT | Severe Thunderstorm Watch | SPC | Aransas, Atascosa, Bee, Bexar, Brooks, Calhoun and 28 more | 9 hr |
| Apr 23, 9:59 AM CDT | Mesoscale Discussion | SPC | Bee, Brooks, Cameron, Duval, Hidalgo, Jim Hogg and 13 more | 91 min |
| Apr 23, 12:54 PM CDT | Mesoscale Discussion | SPC | Cameron, Hidalgo, Kenedy, Starr, Willacy | 66 min |
Nearby
Mesoscale Discussions in Texas, 2023Every mesoscale discussion in 2023
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.