Alert archive / Texas / Mesoscale Discussions in 2017
Mesoscale Discussion 398
The Storm Prediction Center issued this mesoscale discussion at Apr 2, 2017, 5:16 AM CDT for 57 counties in Texas. It was in force for 119 min.
The area
The outline as issued.
The facts
- Issued
- Apr 2, 2017, 5:16 AM CDT (10:16 UTC)
- Expired
- Apr 2, 2017, 7:15 AM CDT
- In force
- 119 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 95%
All 57 counties
Anderson County, TX, Angelina County, TX, Bandera County, TX, Bastrop County, TX, Bell County, TX, Bexar County, TX, Blanco County, TX, Brazos County, TX, Burleson County, TX, Burnet County, TX, Caldwell County, TX, Camp County, TX, Cherokee County, TX, Comal County, TX, Coryell County, TX, Ellis County, TX, Falls County, TX, Fayette County, TX, Franklin County, TX, Freestone County, TX, Frio County, TX, Gillespie County, TX, Gregg County, TX, Grimes County, TX, Guadalupe County, TX, Hays County, TX, Henderson County, TX, Hill County, TX, Houston County, TX, Kaufman County, TX, Kendall County, TX, Kerr 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, Nacogdoches County, TX, Navarro County, TX, Rains County, TX, Robertson County, TX, Rusk County, TX, Smith County, TX, Titus County, TX, Travis County, TX, Trinity County, TX, Upshur County, TX, Van Zandt County, TX, Walker County, TX, Washington County, TX, Williamson County, TX, Wilson County, TX, Wood County, TX
The radar
The Ft Hood radar (KGRK), 16 km from the middle of the area, began a volume at 10:16 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
Fort Worth, TX (KFWD), launched 00:00Z, 10.3 hours before the alert went out and 246 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
- 4 J/kg
- Mixed-layer CIN
- -323 J/kg
- Mixed-layer LCL
- 1204 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 213 m²/s²
- 0-3 km storm-relative helicity
- 308 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
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 1, 7:20 PM CDT | Mesoscale Discussion | SPC | Val Verde | 85 min |
| Apr 1, 8:44 PM CDT | Mesoscale Discussion | SPC | Brown, Callahan, Coleman, Comanche, Concho, Eastland and 5 more | 61 min |
| Apr 1, 10:06 PM CDT | Mesoscale Discussion | SPC | Bandera, Bexar, Blanco, Comal, Edwards, Gillespie and 9 more | 114 min |
| Apr 1, 10:28 PM CDT | Tornado Watch | SPC | Bandera, Edwards, Gillespie, Kerr, Kimble, Kinney and 6 more | 8 hr |
| Apr 2, 2:53 AM CDT | Mesoscale Discussion | SPC | Bandera, Edwards, Gillespie, Kerr, Kimble, Kinney and 6 more | 82 min |
| Apr 2, 6:00 AM CDT | Tornado Watch | SPC | Anderson, Atascosa, Bandera, Bastrop, Bell, Bexar and 51 more | 7 hr |
| Apr 2, 9:04 AM CDT | Mesoscale Discussion | SPC | Angelina, Houston, Jasper, Montgomery, Nacogdoches, Newton and 8 more | 2 hr |
| Apr 2, 9:44 AM CDT | Mesoscale Discussion | SPC | Austin, Bastrop, Brazos, Burleson, Caldwell, Cherokee and 19 more | 2 hr |
| Apr 2, 10:39 AM CDT | Tornado Watch | SPC | Angelina, Austin, Cherokee, Colorado, Gregg, Hardin and 20 more | 5 hr |
| Apr 2, 12:22 PM CDT | Mesoscale Discussion | SPC | Angelina, Nacogdoches, Sabine, San Augustine, Shelby, Trinity | 83 min |
| Apr 2, 1:34 PM CDT | Tornado Watch | SPC | Angelina, Hardin, Jasper, Nacogdoches, Newton, Orange and 4 more | 7 hr |
| Apr 2, 2:06 PM CDT | Mesoscale Discussion | SPC | Sabine | 54 min |
| Apr 2, 4:23 PM CDT | Mesoscale Discussion | SPC | Aransas, Brazoria, Calhoun, Cameron, Jackson, Kenedy and 5 more | 3 hr |
| Apr 2, 5:54 PM CDT | Mesoscale Discussion | SPC | Hardin, Jasper, Newton, Orange | 96 min |
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.