Alert archive / Texas / Mesoscale Discussions in 2007
Mesoscale Discussion 773
The Storm Prediction Center issued this mesoscale discussion at May 10, 2007, 8:16 PM CDT for 32 counties in Texas. It was in force for 119 min.
The area
The outline as issued.
The facts
- Issued
- May 10, 2007, 8:16 PM CDT (01:16 UTC)
- Expired
- May 10, 2007, 10:15 PM CDT
- In force
- 119 min
- Issued by
- the Storm Prediction Center
All 32 counties
Atascosa County, TX, Austin County, TX, Bexar County, TX, Brazoria County, TX, Calhoun County, TX, Chambers County, TX, Colorado County, TX, DeWitt County, TX, Fayette County, TX, Fort Bend County, TX, Frio County, TX, Galveston County, TX, Goliad County, TX, Gonzales County, TX, Grimes County, TX, Guadalupe County, TX, Harris County, TX, Jackson County, TX, Karnes County, TX, Lavaca County, TX, Liberty County, TX, Madison County, TX, Matagorda County, TX, Medina County, TX, Montgomery County, TX, San Jacinto County, TX, Victoria County, TX, Walker County, TX, Waller County, TX, Washington County, TX, Wharton County, TX, Wilson County, TX
The radar
The Austin/San Antonio radar (KEWX), 98 km from the middle of the area, began a volume at 01:18 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
Corpus Christi, TX (KCRP), launched 00:00Z, 1.3 hours before the alert went out and 207 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
- 1187 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 845 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 1.9
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 |
|---|---|---|---|---|
| May 11, 1:13 AM CDT | Mesoscale Discussion | SPC | Brooks, Duval | 92 min |
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.