Alert archive / Texas / Mesoscale Discussions in 2017
Mesoscale Discussion 483
The Storm Prediction Center issued this mesoscale discussion at Apr 11, 2017, 2:05 AM CDT for 60 counties in Texas. It was in force for 115 min.
The area
The outline as issued.
The facts
- Issued
- Apr 11, 2017, 2:05 AM CDT (07:05 UTC)
- Expired
- Apr 11, 2017, 4:00 AM CDT
- In force
- 115 min
- Issued by
- the Storm Prediction Center
All 60 counties
Anderson County, TX, Bandera County, TX, Bastrop County, TX, Bell County, TX, Bexar County, TX, Blanco County, TX, Bosque County, TX, Brazos County, TX, Burleson County, TX, Burnet County, TX, Caldwell County, TX, Collin County, TX, Comal County, TX, Coryell County, TX, Dallas County, TX, Ellis County, TX, Falls County, TX, Fayette County, TX, Freestone County, TX, Gillespie County, TX, Gonzales County, TX, Grimes County, TX, Guadalupe County, TX, Hays County, TX, Henderson County, TX, Hill County, TX, Hood County, TX, Hopkins County, TX, Houston County, TX, Hunt County, TX, Johnson County, TX, Kaufman County, TX, Kendall County, TX, Kerr County, TX, Kinney County, TX, Lampasas County, TX, Lee County, TX, Leon County, TX, Limestone County, TX, Llano County, TX, Madison County, TX, McLennan County, TX, Medina County, TX, Milam County, TX, Montgomery County, TX, Navarro County, TX, Rains County, TX, Real County, TX, Robertson County, TX, Rockwall County, TX, San Jacinto County, TX, Somervell County, TX, Tarrant County, TX, Travis County, TX, Trinity County, TX, Uvalde County, TX, Van Zandt County, TX, Walker County, TX, Washington County, TX, Williamson County, TX
The radar
The Ft Hood radar (KGRK), 62 km from the middle of the area, began a volume at 07:05 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 00:00Z, 7.1 hours before the alert went out and 255 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
- 143 J/kg
- Mixed-layer CIN
- -246 J/kg
- Mixed-layer LCL
- 1066 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 190 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.4
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 10, 9:35 PM CDT | Mesoscale Discussion | SPC | Anderson, Bandera, Bastrop, Bell, Blanco, Brazos and 44 more | 85 min |
| Apr 10, 11:03 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Bandera, Bastrop, Bell, Bexar, Blanco and 33 more | 8 hr |
| Apr 11, 5:23 AM CDT | Mesoscale Discussion | SPC | Anderson, Angelina, Bastrop, Bell, Bexar, Blanco and 48 more | 2 hr |
| Apr 11, 1:43 PM CDT | Mesoscale Discussion | SPC | Aransas, Atascosa, Bee, Bexar, Brazoria, Caldwell and 18 more | 2 hr |
Nearby
Mesoscale Discussions in Texas, 2017Every mesoscale discussion in 2017
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.