Alert archive / Texas / Mesoscale Discussions in 2016
Mesoscale Discussion 758
The Storm Prediction Center issued this mesoscale discussion at May 26, 2016, 10:04 PM CDT for 12 counties in Texas. It was in force for 56 min.
The area
The outline as issued.
The facts
- Issued
- May 26, 2016, 10:04 PM CDT (03:04 UTC)
- Expired
- May 26, 2016, 11:00 PM CDT
- In force
- 56 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 95%
Counties Bastrop County, TX, Bexar County, TX, Blanco County, TX, Caldwell County, TX, Comal County, TX, Fayette County, TX, Gillespie County, TX, Guadalupe County, TX, Hays County, TX, Kendall County, TX, Travis County, TX, Williamson County, TX
The radar
The Austin/San Antonio radar (KEWX), 41 km from the middle of the area, began a volume at 03:05 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
Corpus Christi, TX (KCRP), launched 00:00Z, 3.1 hours before the alert went out and 269 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
- 2934 J/kg
- Mixed-layer CIN
- -101 J/kg
- Mixed-layer LCL
- 855 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 129 m²/s²
- 0-3 km storm-relative helicity
- 180 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 8.6
The text
As transmitted.
065
ACUS11 KWNS 270304
SWOMCD
SPC MCD 270304
TXZ000-270400-
MESOSCALE DISCUSSION 0758
NWS STORM PREDICTION CENTER NORMAN OK
1004 PM CDT THU MAY 26 2016
AREAS AFFECTED...CNTRL TX
CONCERNING...SEVERE POTENTIAL...WATCH LIKELY
VALID 270304Z - 270400Z
PROBABILITY OF WATCH ISSUANCE...95 PERCENT
SUMMARY...SUPERCELL CURRENTLY MOVING THROUGH KERR COUNTY IS EXPECTED
TO PERSIST AS IT MOVES EWD AND A NEW WATCH WILL BE NEEDED SOON TO
COVER THIS THREAT.
DISCUSSION...SUPERCELL THAT HAD ONCE EXHIBITED A DOWNWARD TREND
QUICKLY REGENERATED AS IT ENCOUNTERED A MORE MOIST AIRMASS. AIRMASS
AHEAD OF THE STORM IS CHARACTERIZED BY TEMPERATURES IN THE UPPER
70S/LOW 80S...DEWPOINTS IN THE MID 70S...AND MLCAPE AROUND 2000-3000
J PER KG. THIS FAVORABLE AIRMASS AND THE PRESENCE OF AN OUTFLOW
BOUNDARY WILL LIKELY RESULT IN THE MAINTENANCE OF THIS
SUPERCELL...RESULTING IN A DOWNSTREAM SVR THREAT. SVR TSTM WATCH
WILL BE NEEDED SOON.
..MOSIER/GUYER.. 05/27/2016
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...EWX...
LAT...LON 29869919 30279914 30669866 30769812 30699748 30489723
30139690 29789689 29519710 29479735 29449874 29869919SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 7:33 PM CDT | Severe Thunderstorm Watch | SPC | Bosque, Comanche, Dallas, Eastland, Ellis, Erath and 12 more | 5 hr |
| May 26, 7:46 PM CDT | Mesoscale Discussion | SPC | Foard, Hardeman, Wichita, Wilbarger | 59 min |
| May 26, 9:14 PM CDT | Mesoscale Discussion | SPC | Archer, Bandera, Baylor, Brown, Burnet, Callahan and 47 more | 61 min |
| May 26, 10:17 PM CDT | Severe Thunderstorm Watch | SPC | Bandera, Bastrop, Blanco, Burnet, Caldwell, Comal and 9 more | 6 hr |
| May 26, 11:06 PM CDT | Mesoscale Discussion | SPC | Coryell, Dallas, Ellis, Hill, McLennan | 84 min |
| May 27, 1:30 AM CDT | Mesoscale Discussion | SPC | Brown, Callahan, Coleman, Comanche, Concho, Eastland and 9 more | 60 min |
| May 27, 2:14 AM CDT | Mesoscale Discussion | SPC | Austin, Chambers, Colorado, Fayette, Fort Bend, Harris and 4 more | 61 min |
| May 27, 2:38 AM CDT | Severe Thunderstorm Watch | SPC | Austin, Brazoria, Chambers, Colorado, Fort Bend, Galveston and 16 more | 5 hr |
| May 27, 5:50 AM CDT | Mesoscale Discussion | SPC | Chambers, Hardin, Jasper, Jefferson, Newton, Orange and 1 more | 25 min |
| May 27, 12:57 PM CDT | Mesoscale Discussion | SPC | Angelina, Austin, Bastrop, Brazoria, Caldwell, Chambers and 28 more | 63 min |
| May 27, 2:04 PM CDT | Severe Thunderstorm Watch | SPC | Chambers, Hardin, Jasper, Jefferson, Liberty, Newton and 3 more | 6 hr |
| May 27, 4:03 PM CDT | Mesoscale Discussion | SPC | Austin, Bee, Brazoria, Calhoun, Chambers, Colorado and 27 more | 117 min |
Nearby
Mesoscale Discussions in Texas, 2016Every mesoscale discussion in 2016
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.