Alert archive / Texas / Mesoscale Discussions in 2019
Mesoscale Discussion 487
The Storm Prediction Center issued this mesoscale discussion at Apr 30, 2019, 6:47 PM CDT for 42 counties in Texas. It was in force for 118 min.
The area
The outline as issued.
The facts
- Issued
- Apr 30, 2019, 6:47 PM CDT (23:47 UTC)
- Expired
- Apr 30, 2019, 8:45 PM CDT
- In force
- 118 min
- Issued by
- the Storm Prediction Center
All 42 counties
Borden County, TX, Coke County, TX, Cottle County, TX, Crane County, TX, Crockett County, TX, Crosby County, TX, Dawson County, TX, Dickens County, TX, Fisher County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Glasscock County, TX, Hale County, TX, Hall County, TX, Hardeman County, TX, Haskell County, TX, Howard County, TX, Irion County, TX, Jones County, TX, Kent County, TX, King County, TX, Knox County, TX, Lubbock County, TX, Lynn County, TX, Martin County, TX, Midland County, TX, Mitchell County, TX, Motley County, TX, Nolan County, TX, Pecos County, TX, Reagan County, TX, Runnels County, TX, Schleicher County, TX, Scurry County, TX, Sterling County, TX, Stonewall County, TX, Sutton County, TX, Taylor County, TX, Tom Green County, TX, Upton County, TX, Wilbarger County, TX
The radar
The Midland/Odessa radar (KMAF), 80 km from the middle of the area, began a volume at 23:49 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
Midland Regional, TX (KMAF), launched 12:00Z, 11.8 hours before the alert went out and 81 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
- 1772 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 772 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 184 m²/s²
- 0-3 km storm-relative helicity
- 234 m²/s²
- Significant tornado parameter
- 2.0
- Supercell composite
- 10.3
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 29, 7:01 PM CDT | Severe Thunderstorm Watch | SPC | Andrews, Borden, Dawson, Ector, Gaines, Howard and 7 more | 3 hr |
| Apr 29, 9:35 PM CDT | Mesoscale Discussion | SPC | Ector, Loving, Winkler | 115 min |
| Apr 30, 1:53 PM CDT | Mesoscale Discussion | SPC | Archer, Bosque, Brown, Callahan, Clay, Coleman and 28 more | 2 hr |
| Apr 30, 2:06 PM CDT | Mesoscale Discussion | SPC | Bailey, Borden, Cochran, Crosby, Dawson, Dickens and 17 more | 2 hr |
| Apr 30, 2:19 PM CDT | Tornado Watch | SPC | Archer, Baylor, Bosque, Clay, Collin, Comanche and 24 more | 9 hr |
| Apr 30, 2:56 PM CDT | Mesoscale Discussion | SPC | Baylor, Wilbarger | 2 hr |
| Apr 30, 4:26 PM CDT | Severe Thunderstorm Watch | SPC | Borden, Briscoe, Brown, Callahan, Childress, Coke and 44 more | 8 hr |
| Apr 30, 5:21 PM CDT | Mesoscale Discussion | SPC | Archer, Bosque, Clay, Collin, Comanche, Cooke and 19 more | 84 min |
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.