Alert archive / Texas / Mesoscale Discussions in 2007
Mesoscale Discussion 391
The Storm Prediction Center issued this mesoscale discussion at Mar 31, 2007, 2:12 AM CDT for 38 counties in Texas. It was in force for 93 min.
The area
The outline as issued.
The facts
- Issued
- Mar 31, 2007, 2:12 AM CDT (07:12 UTC)
- Expired
- Mar 31, 2007, 3:45 AM CDT
- In force
- 93 min
- Issued by
- the Storm Prediction Center
All 38 counties
Aransas County, TX, Atascosa County, TX, Austin County, TX, Bastrop County, TX, Bee County, TX, Brazoria County, TX, Brazos County, TX, Burleson County, TX, Caldwell County, TX, Calhoun County, TX, Colorado County, TX, DeWitt County, TX, Fayette County, TX, Fort Bend County, TX, Frio County, TX, Goliad County, TX, Gonzales County, TX, Grimes County, TX, Guadalupe County, TX, Harris County, TX, Jackson County, TX, Karnes County, TX, La Salle County, TX, Lavaca County, TX, Lee County, TX, Live Oak County, TX, Matagorda County, TX, McMullen County, TX, Milam County, TX, Montgomery County, TX, Refugio County, TX, Robertson County, TX, San Patricio County, TX, Victoria County, TX, Waller County, TX, Washington County, TX, Wharton County, TX, Wilson County, TX
The radar
The Austin/San Antonio radar (KEWX), 89 km from the middle of the area, began a volume at 07:12 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
Corpus Christi, TX (KCRP), launched 00:00Z, 7.2 hours before the alert went out and 181 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
- 294 J/kg
- Mixed-layer CIN
- -219 J/kg
- Mixed-layer LCL
- 811 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 131 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
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 30, 7:38 PM CDT | Mesoscale Discussion | SPC | Anderson, Atascosa, Bandera, Bastrop, Bell, Bexar and 74 more | 2 hr |
| Mar 30, 9:48 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bastrop, Bell, Bexar, Blanco and 49 more | 117 min |
| Mar 30, 10:06 PM CDT | Mesoscale Discussion | SPC | Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 16 more | 84 min |
| Mar 30, 10:28 PM CDT | Severe Thunderstorm Watch | SPC | Bowie, Camp, Cass, Cherokee, Franklin, Gregg and 10 more | 8 hr |
| Mar 30, 11:53 PM CDT | Mesoscale Discussion | SPC | Anderson, Atascosa, Bandera, Bastrop, Bell, Bexar and 45 more | 67 min |
| Mar 31, 2:40 AM CDT | Mesoscale Discussion | SPC | Bowie, Cass, Cherokee, Gregg, Harrison, Marion and 2 more | 95 min |
| Mar 31, 3:17 AM CDT | Tornado Watch | SPC | Aransas, Austin, Bee, Brazoria, Calhoun, Chambers and 17 more | 7 hr |
| Mar 31, 5:30 AM CDT | Mesoscale Discussion | SPC | Aransas, Austin, Bee, Brazoria, Calhoun, Chambers and 16 more | 2 hr |
| Mar 31, 7:08 AM CDT | Mesoscale Discussion | SPC | Aransas, Bee, Brazoria, Calhoun, Chambers, Fort Bend and 14 more | 67 min |
| Mar 31, 8:40 AM CDT | Severe Thunderstorm Watch | SPC | Jasper, Newton, Orange, Sabine, San Augustine | 5 hr |
Nearby
Mesoscale Discussions in Texas, 2007Every mesoscale discussion in 2007
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.