Alert archive / Texas / Mesoscale Discussions in 2008
Mesoscale Discussion 656
The Storm Prediction Center issued this mesoscale discussion at Apr 17, 2008, 9:27 PM CDT for 49 counties in Texas. It was in force for 63 min.
The area
The outline as issued.
The facts
- Issued
- Apr 17, 2008, 9:27 PM CDT (02:27 UTC)
- Expired
- Apr 17, 2008, 10:30 PM CDT
- In force
- 63 min
- Issued by
- the Storm Prediction Center
All 49 counties
Atascosa 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, Colorado County, TX, Comal County, TX, Coryell County, TX, DeWitt County, TX, Edwards County, TX, Falls County, TX, Fayette County, TX, Frio County, TX, Gillespie County, TX, Gonzales County, TX, Guadalupe County, TX, Hamilton County, TX, Hays County, TX, Hill County, TX, Karnes County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Kinney County, TX, Lampasas County, TX, Lavaca County, TX, Lee County, TX, Llano County, TX, Mason County, TX, McCulloch County, TX, McLennan County, TX, Medina County, TX, Milam County, TX, Mills County, TX, Real County, TX, Robertson County, TX, San Saba County, TX, Travis County, TX, Uvalde County, TX, Val Verde County, TX, Washington County, TX, Williamson County, TX, Wilson County, TX
The radar
The Austin/San Antonio radar (KEWX), 94 km from the middle of the area, began a volume at 02:30 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, 2.5 hours before the alert went out and 268 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
- 228 J/kg
- Mixed-layer CIN
- -136 J/kg
- Mixed-layer LCL
- 2949 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
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 |
|---|---|---|---|---|
| Apr 17, 7:06 PM CDT | Mesoscale Discussion | SPC | Collin, Cooke, Dallas, Denton, Grayson, Parker and 3 more | 54 min |
| Apr 17, 8:13 PM CDT | Mesoscale Discussion | SPC | Anderson, Bowie, Camp, Cass, Cherokee, Delta and 30 more | 32 min |
| Apr 17, 8:57 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Bell, Camp, Cherokee, Collin, Dallas and 32 more | 7 hr |
| Apr 17, 11:55 PM CDT | Mesoscale Discussion | SPC | Anderson, Atascosa, Bandera, Bastrop, Bexar, Brazos and 46 more | 65 min |
Nearby
Mesoscale Discussions in Texas, 2008Every mesoscale discussion in 2008
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.