Alert archive / Texas / Mesoscale Discussions in 2008
Mesoscale Discussion 933
The Storm Prediction Center issued this mesoscale discussion at May 14, 2008, 11:40 PM CDT for 15 counties in Texas. It was in force for 65 min.
The area
The outline as issued.
The facts
- Issued
- May 14, 2008, 11:40 PM CDT (04:40 UTC)
- Expired
- May 15, 2008, 12:45 AM CDT
- In force
- 65 min
- Issued by
- the Storm Prediction Center
Counties Anderson County, TX, Angelina County, TX, Cherokee County, TX, Gregg County, TX, Henderson County, TX, Houston County, TX, Nacogdoches County, TX, Polk County, TX, Rusk County, TX, San Augustine County, TX, San Jacinto County, TX, Smith County, TX, Trinity County, TX, Tyler County, TX, Van Zandt County, TX
The radar
The Shreveport radar (KSHV), 170 km from the middle of the area, began a volume at 04:40 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
Shreveport, LA (KSHV), launched 00:00Z, 4.7 hours before the alert went out and 179 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 0 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 198 m²/s²
- 0-3 km storm-relative helicity
- 231 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
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 14, 7:06 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bexar, Blanco, Brown, Burnet and 30 more | 54 min |
| May 14, 7:50 PM CDT | Tornado Watch | SPC | Bastrop, Bell, Bosque, Brazos, Burleson, Caldwell and 30 more | 6 hr |
| May 14, 7:53 PM CDT | Mesoscale Discussion | SPC | Brooks, Hidalgo, Jim Hogg, Starr, Zapata | 67 min |
| May 14, 10:02 PM CDT | Mesoscale Discussion | SPC | Austin, Bandera, Bastrop, Bell, Bexar, Blanco and 76 more | 88 min |
| May 15, 1:16 AM CDT | Tornado Watch | SPC | Angelina, Bowie, Brazos, Burleson, Camp, Cass and 29 more | 6 hr |
| May 15, 2:11 AM CDT | Mesoscale Discussion | SPC | Jefferson, Orange | 94 min |
| May 15, 4:16 AM CDT | Tornado Watch | SPC | Jefferson, Orange | 7 hr |
| May 15, 6:24 PM CDT | Mesoscale Discussion | SPC | Dimmit, Maverick | 66 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.