Alert archive / Texas / Mesoscale Discussions in 2023
Mesoscale Discussion 683
The Storm Prediction Center issued this mesoscale discussion at May 5, 2023, 6:30 PM CDT for 34 counties in Texas. It was in force for 90 min.
The area
The outline as issued.
The facts
- Issued
- May 5, 2023, 6:30 PM CDT (23:30 UTC)
- Expired
- May 5, 2023, 8:00 PM CDT
- In force
- 90 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 187
All 34 counties
Bell County, TX, Blanco County, TX, Bosque County, TX, Brown County, TX, Burnet County, TX, Collin County, TX, Comanche County, TX, Coryell County, TX, Dallas County, TX, Denton County, TX, Eastland County, TX, Ellis County, TX, Erath County, TX, Falls County, TX, Gillespie County, TX, Hamilton County, TX, Hill County, TX, Hood County, TX, Johnson County, TX, Lampasas County, TX, Llano County, TX, Mason County, TX, McCulloch County, TX, McLennan County, TX, Milam County, TX, Mills County, TX, Palo Pinto County, TX, Parker County, TX, San Saba County, TX, Somervell County, TX, Tarrant County, TX, Travis County, TX, Williamson County, TX, Wise County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 88 km from the middle of the area, began a volume at 23:30 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
Fort Worth, TX (KFWD), launched 12:00Z, 11.5 hours before the alert went out and 112 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
- 1742 J/kg
- Mixed-layer CIN
- -171 J/kg
- Mixed-layer LCL
- 747 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 381 m²/s²
- 0-3 km storm-relative helicity
- 357 m²/s²
- Significant tornado parameter
- 0.4
- 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 |
|---|---|---|---|---|
| May 4, 7:07 PM CDT | Mesoscale Discussion | SPC | Bandera, Bosque, Brown, Callahan, Coleman, Comanche and 38 more | 113 min |
| May 4, 7:13 PM CDT | Mesoscale Discussion | SPC | Clay, Cooke, Fannin, Grayson, Montague | 92 min |
| May 4, 10:34 PM CDT | Mesoscale Discussion | SPC | Bandera, Bell, Blanco, Bosque, Burnet, Coryell and 19 more | 86 min |
| May 5, 1:52 AM CDT | Mesoscale Discussion | SPC | Sabine | 113 min |
| May 5, 2:42 PM CDT | Mesoscale Discussion | SPC | Bell, Bosque, Brown, Burnet, Callahan, Coleman and 26 more | 2 hr |
| May 5, 3:52 PM CDT | Severe Thunderstorm Watch | SPC | Bastrop, Bell, Blanco, Bosque, Brown, Burnet and 43 more | 8 hr |
Nearby
Mesoscale Discussions in Texas, 2023Every mesoscale discussion in 2023
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.