Alert archive / Texas / Mesoscale Discussions in 2020
Mesoscale Discussion 20
The Storm Prediction Center issued this mesoscale discussion at Jan 10, 2020, 6:30 PM CST for 22 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 10, 2020, 6:30 PM CST (00:30 UTC)
- Expired
- Jan 10, 2020, 8:30 PM CST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 22 counties
Atascosa County, TX, Bandera County, TX, Bastrop County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, Dimmit County, TX, Frio County, TX, Gonzales County, TX, Guadalupe County, TX, Hays County, TX, Kendall County, TX, Maverick County, TX, Medina County, TX, Milam County, TX, Travis County, TX, Uvalde County, TX, Williamson County, TX, Wilson County, TX, Zavala County, TX
The radar
The Austin/San Antonio radar (KEWX), 61 km from the middle of the area, began a volume at 00:34 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 (KDRT), launched 00:00Z, 0.5 hours before the alert went out and 213 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3398 m above ground
- 0-6 km bulk shear
- 87 kt
- 0-1 km storm-relative helicity
- -218 m²/s²
- 0-3 km storm-relative helicity
- -63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Jan 10, 7:30 PM CST | Mesoscale Discussion | SPC | Anderson, Angelina, Bell, Bowie, Camp, Cass and 40 more | 2 hr |
| Jan 10, 8:49 PM CST | Mesoscale Discussion | SPC | Angelina, Austin, Brazoria, Brazos, Burleson, Chambers and 25 more | 116 min |
| Jan 10, 9:09 PM CST | Tornado Watch | SPC | Austin, Brazoria, Brazos, Burleson, Chambers, Colorado and 17 more | 5 hr |
| Jan 10, 10:40 PM CST | Mesoscale Discussion | SPC | Cass, Cherokee, Gregg, Harrison, Marion, Nacogdoches and 5 more | 2 hr |
| Jan 11, 12:21 AM CST | Mesoscale Discussion | SPC | Angelina, Brazoria, Chambers, Galveston, Hardin, Harris and 10 more | 99 min |
| Jan 11, 12:28 AM CST | Tornado Watch | SPC | Hardin, Jasper, Jefferson, Newton, Orange, Sabine and 1 more | 8 hr |
| Jan 11, 1:19 AM CST | Mesoscale Discussion | SPC | Sabine | 86 min |
| Jan 11, 7:34 AM CST | Mesoscale Discussion | SPC | Cooke, Denton, Fannin, Grayson | 116 min |
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.