Alert archive / Texas / Mesoscale Discussions in 2012
Mesoscale Discussion 297
The Storm Prediction Center issued this mesoscale discussion at Mar 19, 2012, 8:22 PM CDT for 36 counties in Texas. It was in force for 53 min.
The area
The outline as issued.
The facts
- Issued
- Mar 19, 2012, 8:22 PM CDT (01:22 UTC)
- Expired
- Mar 19, 2012, 9:15 PM CDT
- In force
- 53 min
- Issued by
- the Storm Prediction Center
All 36 counties
Bandera County, TX, Bell County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Comal County, TX, Delta County, TX, Ellis County, TX, Falls County, TX, Freestone County, TX, Frio County, TX, Gillespie County, TX, Guadalupe County, TX, Hays County, TX, Henderson County, TX, Hill County, TX, Hopkins County, TX, Hunt County, TX, Kaufman County, TX, Kendall County, TX, Kerr County, TX, Limestone County, TX, Maverick County, TX, McLennan County, TX, Medina County, TX, Milam County, TX, Navarro County, TX, Rains County, TX, Real County, TX, Robertson County, TX, Rockwall County, TX, Travis County, TX, Uvalde County, TX, Van Zandt County, TX, Williamson County, TX, Zavala County, TX
The radar
The Ft Hood radar (KGRK), 66 km from the middle of the area, began a volume at 01:24 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, 1.4 hours before the alert went out and 304 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
- 1142 J/kg
- Mixed-layer CIN
- -180 J/kg
- Mixed-layer LCL
- 2280 m above ground
- 0-6 km bulk shear
- 72 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 170 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 19, 7:28 PM CDT | Tornado Watch | SPC | Anderson, Bell, Bowie, Camp, Cass, Cherokee and 30 more | 9 hr |
| Mar 19, 9:46 PM CDT | Mesoscale Discussion | SPC | Bandera, Bell, Blanco, Burnet, Coryell, Ellis and 18 more | 119 min |
| Mar 19, 11:53 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bastrop, Bell, Bexar, Burleson, Caldwell and 28 more | 67 min |
| Mar 20, 12:48 AM CDT | Severe Thunderstorm Watch | SPC | Aransas, Atascosa, Austin, Bastrop, Bee, Bexar and 52 more | 9 hr |
| Mar 20, 2:43 AM CDT | Mesoscale Discussion | SPC | Aransas, Bee, Calhoun, Colorado, DeWitt, Duval and 13 more | 92 min |
| Mar 20, 5:26 AM CDT | Mesoscale Discussion | SPC | Brazoria, Calhoun, Fort Bend, Harris, Liberty, Matagorda and 3 more | 2 hr |
| Mar 20, 9:03 AM CDT | Mesoscale Discussion | SPC | Chambers, Galveston, Hardin, Jasper, Jefferson, Liberty and 6 more | 87 min |
| Mar 20, 9:46 AM CDT | Tornado Watch | SPC | Hardin, Jasper, Jefferson, Newton, Orange, Sabine and 3 more | 7 hr |
Nearby
Mesoscale Discussions in Texas, 2012Every mesoscale discussion in 2012
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.