Alert archive / Texas / Mesoscale Discussions in 2020
Mesoscale Discussion 285
The Storm Prediction Center issued this mesoscale discussion at Apr 3, 2020, 5:52 PM CDT for 23 counties in Texas. It was in force for 83 min.
The area
The outline as issued.
The facts
- Issued
- Apr 3, 2020, 5:52 PM CDT (22:52 UTC)
- Expired
- Apr 3, 2020, 7:15 PM CDT
- In force
- 83 min
- Issued by
- the Storm Prediction Center
All 23 counties
Aransas County, TX, Atascosa County, TX, Bee County, TX, Calhoun County, TX, DeWitt County, TX, Dimmit County, TX, Duval County, TX, Frio County, TX, Goliad County, TX, Jackson County, TX, Jim Wells County, TX, Karnes County, TX, Kleberg County, TX, La Salle County, TX, Live Oak County, TX, Maverick County, TX, McMullen County, TX, Nueces County, TX, Refugio County, TX, San Patricio County, TX, Victoria County, TX, Webb County, TX, Zavala County, TX
The radar
The Laughlin AFB radar (KDFX), 147 km from the middle of the area, began a volume at 22:54 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
Corpus Christi, TX (KCRP), launched 12:00Z, 10.9 hours before the alert went out and 192 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
- 1758 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 509 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- -36 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.9
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 3, 11:35 AM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bastrop, Bell, Bexar, Blanco and 39 more | 115 min |
| Apr 3, 12:41 PM CDT | Severe Thunderstorm Watch | SPC | Atascosa, Bandera, Bastrop, Bexar, Blanco, Caldwell and 24 more | 7 hr |
| Apr 3, 2:34 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bastrop, Bee, Bexar, Blanco and 33 more | 86 min |
| Apr 3, 3:23 PM CDT | Severe Thunderstorm Watch | SPC | Bee, Duval, Jim Wells, Kleberg, La Salle, Live Oak and 4 more | 7 hr |
Nearby
Mesoscale Discussions in Texas, 2020Every mesoscale discussion in 2020
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.