Alert archive / Texas / Mesoscale Discussions in 2017
Mesoscale Discussion 901
The Storm Prediction Center issued this mesoscale discussion at May 28, 2017, 1:34 PM CDT for 24 counties in Texas. It was in force for 56 min.
The area
The outline as issued.
The facts
- Issued
- May 28, 2017, 1:34 PM CDT (18:34 UTC)
- Expired
- May 28, 2017, 2:30 PM CDT
- In force
- 56 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 24 counties
Bastrop County, TX, Bell County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, Coryell County, TX, Falls County, TX, Gillespie County, TX, Guadalupe County, TX, Hays County, TX, Kendall County, TX, Lampasas County, TX, Leon County, TX, Limestone County, TX, Llano County, TX, Madison County, TX, McLennan County, TX, Medina County, TX, Milam County, TX, Robertson County, TX, Travis County, TX, Williamson County, TX
The radar
The Ft Hood radar (KGRK), 42 km from the middle of the area, began a volume at 18:35 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
Fort Worth, TX (KFWD), launched 12:00Z, 6.6 hours before the alert went out and 252 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
- 1005 J/kg
- Mixed-layer CIN
- -290 J/kg
- Mixed-layer LCL
- 874 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 227 m²/s²
- 0-3 km storm-relative helicity
- 211 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 6.3
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 |
|---|---|---|---|---|
| May 27, 7:12 PM CDT | Mesoscale Discussion | SPC | Dallam, Hansford, Hartley, Ochiltree, Sherman | 2 hr |
| May 27, 9:07 PM CDT | Mesoscale Discussion | SPC | Hansford, Hemphill, Hutchinson, Lipscomb, Ochiltree, Roberts and 1 more | 53 min |
| May 27, 11:47 PM CDT | Mesoscale Discussion | SPC | Clay, Cooke, Fannin, Grayson, Lamar, Montague and 1 more | 58 min |
| May 28, 12:06 AM CDT | Severe Thunderstorm Watch | SPC | Bowie, Collin, Cooke, Denton, Fannin, Grayson and 4 more | 5 hr |
| May 28, 2:53 AM CDT | Mesoscale Discussion | SPC | Bowie, Camp, Cass, Collin, Cooke, Delta and 16 more | 2 hr |
| May 28, 4:59 AM CDT | Mesoscale Discussion | SPC | Bowie, Camp, Cass, Collin, Delta, Denton and 7 more | 2 hr |
| May 28, 3:09 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Atascosa, Austin, Bandera, Bastrop, Bell and 58 more | 8 hr |
| May 28, 5:01 PM CDT | Mesoscale Discussion | SPC | Gregg, Harrison, Marion, Nacogdoches, Panola, Rusk and 1 more | 59 min |
| May 28, 5:19 PM CDT | Severe Thunderstorm Watch | SPC | Angelina, Cherokee, Gregg, Harrison, Marion, Nacogdoches and 6 more | 4 hr |
| May 28, 6:03 PM CDT | Mesoscale Discussion | SPC | Anderson, Bandera, Bastrop, Bell, Bexar, Blanco and 40 more | 57 min |
Nearby
Mesoscale Discussions in Texas, 2017Every mesoscale discussion in 2017
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.