Alert archive / Texas / Mesoscale Discussions in 2020
Mesoscale Discussion 325
The Storm Prediction Center issued this mesoscale discussion at Apr 9, 2020, 12:13 PM CDT for 25 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 9, 2020, 12:13 PM CDT (17:13 UTC)
- Expired
- Apr 9, 2020, 2:15 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 25 counties
Bandera County, TX, Bastrop County, TX, Bell County, TX, Blanco County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, Coryell County, TX, Gillespie County, TX, Hays County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Lampasas County, TX, Lee County, TX, Llano County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Milam County, TX, Mills County, TX, Real County, TX, San Saba County, TX, Travis County, TX, Williamson County, TX
The radar
The Austin/San Antonio radar (KEWX), 111 km from the middle of the area, began a volume at 17:13 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 12:00Z, 5.2 hours before the alert went out and 237 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
- 2030 J/kg
- Mixed-layer CIN
- -145 J/kg
- Mixed-layer LCL
- 1296 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 86 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
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 9, 2:47 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Angelina, Atascosa, Austin, Bandera, Bastrop and 69 more | 7 hr |
| Apr 9, 5:20 PM CDT | Mesoscale Discussion | SPC | Angelina, Austin, Brazoria, Chambers, Colorado, Fort Bend and 19 more | 115 min |
| Apr 9, 5:40 PM CDT | Mesoscale Discussion | SPC | Brooks, Cameron, Duval, Hidalgo, Jim Hogg, Jim Wells and 7 more | 2 hr |
| Apr 9, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | Brooks, Hidalgo, Jim Hogg, Starr, Zapata | 4 hr |
Nearby
Mesoscale Discussions in Texas, 2020Every mesoscale discussion in 2020
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.