Alert archive / Texas / Mesoscale Discussions in 2018
Mesoscale Discussion 348
The Storm Prediction Center issued this mesoscale discussion at May 4, 2018, 7:52 AM CDT for 27 counties in Texas. It was in force for 113 min.
The area
The outline as issued.
The facts
- Issued
- May 4, 2018, 7:52 AM CDT (12:52 UTC)
- Expired
- May 4, 2018, 9:45 AM CDT
- In force
- 113 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 27 counties
Atascosa County, TX, Bandera County, TX, Bee County, TX, Bexar County, TX, Blanco County, TX, Caldwell County, TX, Comal County, TX, DeWitt County, TX, Dimmit County, TX, Frio County, TX, Goliad County, TX, Gonzales County, TX, Guadalupe County, TX, Hays County, TX, Karnes County, TX, Kendall County, TX, La Salle County, TX, Live Oak County, TX, Maverick County, TX, McMullen County, TX, Medina County, TX, San Patricio County, TX, Travis County, TX, Uvalde County, TX, Webb County, TX, Wilson County, TX, Zavala County, TX
The radar
The Austin/San Antonio radar (KEWX), 101 km from the middle of the area, began a volume at 12:52 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 (KDLF), launched 12:00Z, 0.9 hours before the alert went out and 197 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
- 1841 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 466 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 131 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 4.1
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 3, 9:05 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bexar, Blanco, Burnet, Caldwell and 24 more | 85 min |
| May 3, 9:33 PM CDT | Severe Thunderstorm Watch | SPC | Atascosa, Bandera, Bexar, Blanco, Burnet, Comal and 21 more | 9 hr |
| May 3, 11:53 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bexar, Blanco, Burnet, Comal and 21 more | 2 hr |
| May 4, 4:13 AM CDT | Mesoscale Discussion | SPC | Edwards, Kinney, Sutton, Val Verde | 92 min |
| May 4, 4:41 PM CDT | Mesoscale Discussion | SPC | Brooks, Cameron, Duval, Hidalgo, Jim Hogg, Jim Wells and 8 more | 94 min |
Nearby
Mesoscale Discussions in Texas, 2018Every mesoscale discussion in 2018
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.