Alert archive / Texas / Mesoscale Discussions in 2019
Mesoscale Discussion 424
The Storm Prediction Center issued this mesoscale discussion at Apr 23, 2019, 1:36 PM CDT for 26 counties in Texas. It was in force for 114 min.
The area
The outline as issued.
The facts
- Issued
- Apr 23, 2019, 1:36 PM CDT (18:36 UTC)
- Expired
- Apr 23, 2019, 3:30 PM CDT
- In force
- 114 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 26 counties
Brown County, TX, Callahan County, TX, Coke County, TX, Coleman County, TX, Comanche County, TX, Concho County, TX, Crockett County, TX, Eastland County, TX, Erath County, TX, Glasscock County, TX, Irion County, TX, Jones County, TX, Mitchell County, TX, Nolan County, TX, Palo Pinto County, TX, Reagan County, TX, Runnels County, TX, Shackelford County, TX, Stephens County, TX, Sterling County, TX, Taylor County, TX, Terrell County, TX, Tom Green County, TX, Upton County, TX, Val Verde County, TX, Young County, TX
The radar
The San Angelo radar (KSJT), 20 km from the middle of the area, began a volume at 18:36 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
Midland Regional, TX (KMAF), launched 12:00Z, 6.6 hours before the alert went out and 162 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
- 966 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 628 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 180 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 2.9
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 |
|---|---|---|---|---|
| Apr 22, 7:41 PM CDT | Mesoscale Discussion | SPC | Loving | 2 hr |
| Apr 22, 9:24 PM CDT | Mesoscale Discussion | SPC | Childress, Cottle, Crosby, Dawson, Dickens, Foard and 8 more | 96 min |
| Apr 23, 1:28 AM CDT | Mesoscale Discussion | SPC | Borden, Childress, Cottle, Crosby, Dawson, Dickens and 14 more | 62 min |
| Apr 23, 2:32 PM CDT | Severe Thunderstorm Watch | SPC | Brown, Callahan, Coke, Coleman, Collin, Comanche and 40 more | 8 hr |
| Apr 23, 4:52 PM CDT | Mesoscale Discussion | SPC | Brewster, Culberson, Hudspeth, Jeff Davis, Loving, Pecos and 3 more | 113 min |
| Apr 23, 5:11 PM CDT | Mesoscale Discussion | SPC | Brown, Callahan, Coke, Coleman, Comanche, Eastland and 24 more | 94 min |
| Apr 23, 5:39 PM CDT | Severe Thunderstorm Watch | SPC | Brewster, Culberson, Jeff Davis, Loving, Presidio, Reeves and 2 more | 5 hr |
Nearby
Mesoscale Discussions in Texas, 2019Every mesoscale discussion in 2019
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.