Alert archive / Texas / Mesoscale Discussions in 2020
Mesoscale Discussion 200
The Storm Prediction Center issued this mesoscale discussion at Mar 19, 2020, 2:08 AM CDT for Shackelford County, Stephens County, Texas. It was in force for 67 min.
The area
The outline as issued.
The facts
- Issued
- Mar 19, 2020, 2:08 AM CDT (07:08 UTC)
- Expired
- Mar 19, 2020, 3:15 AM CDT
- In force
- 67 min
- Issued by
- the Storm Prediction Center
Counties Shackelford County, TX, Stephens County, TX
The radar
The Dyess AFB radar (KDYX), 22 km from the middle of the area, began a volume at 07:11 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 00:00Z, 7.1 hours before the alert went out and 169 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
- 1265 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 888 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 198 m²/s²
- 0-3 km storm-relative helicity
- 237 m²/s²
- Significant tornado parameter
- 1.9
- Supercell composite
- 11.8
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 |
|---|---|---|---|---|
| Mar 18, 8:45 PM CDT | Mesoscale Discussion | SPC | Bandera, Coke, Concho, Crockett, Edwards, Irion and 18 more | 60 min |
| Mar 18, 9:34 PM CDT | Mesoscale Discussion | SPC | Cooke, Grayson, Wise | 56 min |
| Mar 18, 11:37 PM CDT | Tornado Watch | SPC | Brown, Callahan, Coke, Coleman, Comanche, Concho and 34 more | 5 hr |
| Mar 19, 1:28 AM CDT | Mesoscale Discussion | SPC | Brown, Callahan, Coke, Coleman, Comanche, Concho and 23 more | 2 hr |
| Mar 19, 3:33 AM CDT | Mesoscale Discussion | SPC | Bandera, Brown, Callahan, Coleman, Comanche, Concho and 24 more | 117 min |
| Mar 19, 1:58 PM CDT | Mesoscale Discussion | SPC | Bosque, Bowie, Camp, Collin, Dallas, Delta and 26 more | 62 min |
| Mar 19, 2:24 PM CDT | Tornado Watch | SPC | Bowie, Camp, Cass, Collin, Delta, Fannin and 18 more | 8 hr |
| Mar 19, 6:51 PM CDT | Mesoscale Discussion | SPC | Bell, Bosque, Coryell, Falls, Freestone, Hamilton and 9 more | 54 min |
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.