Alert archive / Texas / Mesoscale Discussions in 2018
Mesoscale Discussion 333
The Storm Prediction Center issued this mesoscale discussion at May 3, 2018, 5:55 AM CDT for 34 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 3, 2018, 5:55 AM CDT (10:55 UTC)
- Expired
- May 3, 2018, 8:00 AM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 60%
All 34 counties
Bosque County, TX, Brown County, TX, Callahan County, TX, Coleman County, TX, Comanche County, TX, Concho County, TX, Coryell County, TX, Eastland County, TX, Erath County, TX, Hamilton County, TX, Hood County, TX, Jack County, TX, Johnson County, TX, Jones County, TX, Lampasas County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Mills County, TX, Palo Pinto County, TX, Parker County, TX, Runnels County, TX, San Saba County, TX, Schleicher County, TX, Shackelford County, TX, Somervell County, TX, Stephens County, TX, Sutton County, TX, Tarrant County, TX, Taylor County, TX, Throckmorton County, TX, Tom Green County, TX, Wise County, TX, Young County, TX
The radar
The Dyess AFB radar (KDYX), 69 km from the middle of the area, began a volume at 10:56 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
Fort Worth, TX (KFWD), launched 00:00Z, 10.9 hours before the alert went out and 195 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
- 1823 J/kg
- Mixed-layer CIN
- -104 J/kg
- Mixed-layer LCL
- 1260 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 135 m²/s²
- 0-3 km storm-relative helicity
- 171 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 10.0
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 2, 7:17 PM CDT | Mesoscale Discussion | SPC | Callahan, Coke, Coleman, Concho, Crockett, Eastland and 27 more | 88 min |
| May 2, 10:27 PM CDT | Mesoscale Discussion | SPC | Borden, Callahan, Coke, Coleman, Concho, Crockett and 28 more | 93 min |
| May 3, 4:06 AM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Clay, Cooke, Denton, Foard and 13 more | 114 min |
| May 3, 5:18 AM CDT | Severe Thunderstorm Watch | SPC | Archer, Baylor, Clay, Cooke, Grayson, Montague and 2 more | 6 hr |
| May 3, 7:03 AM CDT | Severe Thunderstorm Watch | SPC | Bell, Bosque, Brown, Burnet, Coleman, Collin and 38 more | 7 hr |
| May 3, 9:55 AM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Bell, Bosque, Brown, Burnet and 39 more | 65 min |
| May 3, 12:35 PM CDT | Mesoscale Discussion | SPC | Bell, Bosque, Bowie, Camp, Cass, Coryell and 22 more | 85 min |
| May 3, 5:42 PM CDT | Mesoscale Discussion | SPC | Bandera, Bexar, Dimmit, Edwards, Frio, Gillespie and 8 more | 2 hr |
Nearby
Mesoscale Discussions in Texas, 2018Every mesoscale discussion in 2018
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.