Alert archive / Texas / Mesoscale Discussions in 2014
Mesoscale Discussion 721
The Storm Prediction Center issued this mesoscale discussion at May 26, 2014, 10:21 PM CDT for 8 counties in Texas. It was in force for 54 min.
The area
The outline as issued.
The facts
- Issued
- May 26, 2014, 10:21 PM CDT (03:21 UTC)
- Expired
- May 26, 2014, 11:15 PM CDT
- In force
- 54 min
- Issued by
- the Storm Prediction Center
Counties Brown County, TX, Coleman County, TX, Concho County, TX, Irion County, TX, McCulloch County, TX, Reagan County, TX, Schleicher County, TX, Tom Green County, TX
The radar
The San Angelo radar (KSJT), 10 km from the middle of the area, began a volume at 03:21 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
Midland Regional, TX (KMAF), launched 00:00Z, 3.4 hours before the alert went out and 174 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
- 744 J/kg
- Mixed-layer CIN
- -84 J/kg
- Mixed-layer LCL
- 1490 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 213 m²/s²
- 0-3 km storm-relative helicity
- 241 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 4.3
The text
As transmitted, in the capitals the NWS used until 2016.
642
ACUS11 KWNS 270321
SWOMCD
SPC MCD 270321
TXZ000-270415-
MESOSCALE DISCUSSION 0721
NWS STORM PREDICTION CENTER NORMAN OK
1021 PM CDT MON MAY 26 2014
AREAS AFFECTED...WRN THROUGH WCNTRL TX
CONCERNING...TORNADO WATCH 188...
VALID 270321Z - 270415Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 188 CONTINUES.
SUMMARY...A MODEST THREAT FOR A FEW DAMAGING WIND GUSTS AND HAIL MAY
PERSIST THROUGH 05Z. HOWEVER...THE RISK FOR TORNADOES HAS
DIMINISHED...AND REMAINING CLUSTER OF STRONG TO SEVERE STORMS IS
EXPECTED BEGIN A WEAKENING TREND AFTER 04Z.
DISCUSSION...STORMS HAVE EVOLVED INTO A SMALL MCS FROM NEAR SAN
ANGELO TO WEST OF STEPHENVILLE. MUCH OF THIS ACTIVITY HAS BECOME
UNDERCUT BY THE SEWD ADVANCING CONVECTIVE OUTFLOW BOUNDARY WHICH IN
ADDITION TO THE ONSET OF NOCTURNAL COOLING...HAVE MITIGATED THE
TORNADO THREAT. STORMS MAY CONTINUE TO POSE A THREAT FOR DAMAGING
WIND AND HAIL AS THEY DEVELOP SEWD NEXT HOUR OR TWO. HOWEVER...THE
ATMOSPHERE FARTHER EAST ACROSS NCNTRL TX HAS BEEN STABILIZED BY
EARLIER CONVECTIVE OUTFLOW...SUGGESTING THE STORMS SHOULD BEGIN TO
UNDERGO A WEAKENING TREND BY 04-05Z.
..DIAL.. 05/27/2014
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...FWD...SJT...MAF...
LAT...LON 31630187 31520046 32169928 31689875 31059914 30780051
31160173 31630187SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 7:38 PM CDT | Mesoscale Discussion | SPC | Comanche, Eastland, Erath, Hamilton, Jack, Lampasas and 4 more | 67 min |
| May 26, 8:04 PM CDT | Mesoscale Discussion | SPC | Borden, Coke, Crane, Crockett, Dickens, Edwards and 19 more | 86 min |
| May 26, 11:45 PM CDT | Mesoscale Discussion | SPC | Starr | 60 min |
| May 27, 2:17 AM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bexar, Blanco, Caldwell, Comal and 9 more | 2 hr |
| May 27, 9:19 AM CDT | Mesoscale Discussion | SPC | Jasper, Jefferson, Newton, Orange, Sabine | 56 min |
| May 27, 3:03 PM CDT | Mesoscale Discussion | SPC | Bosque, Brown, Callahan, Coleman, Collin, Comanche and 30 more | 117 min |
| May 27, 3:13 PM CDT | Mesoscale Discussion | SPC | Aransas, Atascosa, Bee, Duval, Frio, Goliad and 10 more | 62 min |
| May 27, 3:18 PM CDT | Severe Thunderstorm Watch | SPC | Bell, Bosque, Brown, Burnet, Callahan, Coleman and 45 more | 6 hr |
| May 27, 3:40 PM CDT | Tornado Watch | SPC | Aransas, Atascosa, Bandera, Bee, Bexar, Blanco and 24 more | 6 hr |
| May 27, 5:30 PM CDT | Mesoscale Discussion | SPC | Aransas, Atascosa, Bee, Duval, Frio, Goliad and 10 more | 90 min |
| May 27, 6:00 PM CDT | Mesoscale Discussion | SPC | Bell, Bosque, Coryell, Ellis, Falls, Hamilton and 8 more | 90 min |
| May 27, 6:27 PM CDT | Mesoscale Discussion | SPC | Kenedy, Willacy | 93 min |
| May 27, 6:40 PM CDT | Tornado Watch | SPC | Brooks, Kenedy, Willacy | 2 hr |
Nearby
Mesoscale Discussions in Texas, 2014Every mesoscale discussion in 2014
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.