Alert archive / Texas / Mesoscale Discussions in 2012
Mesoscale Discussion 1165
The Storm Prediction Center issued this mesoscale discussion at Jun 14, 2012, 4:40 PM CDT for 17 counties in Texas. It was in force for 95 min.
The area
The outline as issued.
The facts
- Issued
- Jun 14, 2012, 4:40 PM CDT (21:40 UTC)
- Expired
- Jun 14, 2012, 6:15 PM CDT
- In force
- 95 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
Counties Andrews County, TX, Brewster County, TX, Crane County, TX, Crockett County, TX, Ector County, TX, Glasscock County, TX, Jeff Davis County, TX, Martin County, TX, Midland County, TX, Pecos County, TX, Presidio County, TX, Reagan County, TX, Reeves County, TX, Terrell County, TX, Upton County, TX, Ward County, TX, Winkler County, TX
The radar
The Midland/Odessa radar (KMAF), 187 km from the middle of the area, began a volume at 21:39 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 12:00Z, 9.7 hours before the alert went out and 188 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
- 529 J/kg
- Mixed-layer CIN
- -512 J/kg
- Mixed-layer LCL
- 2062 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 196 m²/s²
- 0-3 km storm-relative helicity
- 246 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
075
ACUS11 KWNS 142140
SWOMCD
SPC MCD 142140
TXZ000-NMZ000-142315-
MESOSCALE DISCUSSION 1165
NWS STORM PREDICTION CENTER NORMAN OK
0440 PM CDT THU JUN 14 2012
AREAS AFFECTED...SWRN TX
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 142140Z - 142315Z
PROBABILITY OF WATCH ISSUANCE...20 PERCENT
SUMMARY...THREAT FOR ISOLATED DAMAGING WIND GUSTS AND LARGE HAIL
WILL EXIST ACROSS SWRN TX LATE THIS AFTERNOON INTO EARLY NIGHT.
LIMITED COVERAGE OF THE SVR THREAT IS EXPECTED TO PRECLUDE THE NEED
FOR A WW.
DISCUSSION...CLUSTER OF THUNDERSTORMS HAS RECENTLY DEVELOPED ON A
DRYLINE 30 W OF FST...WITH ADDITIONAL DEVELOPMENT POSSIBLE N AND S
OF THIS AREA BASED ON DEEPENING CUMULUS OBSERVED IN VIS SATELLITE
IMAGERY. SURFACE AIRMASS IS CHARACTERIZED BY TEMPERATURES FROM
100-105F AND DEWPOINTS IN THE 40S AND 50S. GIVEN THE LARGE
TEMPERATURE/DEWPOINT SPREADS AND STEEP LOW/MIDLEVEL LAPSE
RATES...ENVIRONMENT WILL SUPPORT DAMAGING WIND GUSTS. IN
ADDITION...LOW-LEVEL SLYS VEERING TO WLY IN THE MIDLEVELS MAY AID IN
MARGINAL STORM ORGANIZATION AND ENHANCE UPDRAFT STRENGTH GIVEN THE
PRESENCE OF MODERATE CAPE AND STEEP LAPSE RATES. THUS...ISOLATED
LARGE HAIL WILL BE POSSIBLE AS WELL. HOWEVER...OVERALL COVERAGE OF
SVR WIND/HAIL THREAT IS EXPECTED TO BE LIMITED...WHICH SHOULD
PRECLUDE THE NEED FOR A WW.
..GARNER/WEISS.. 06/14/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...EWX...SJT...MAF...
LAT...LON 29630454 30650444 32420295 32280153 30630132 29790201
29720266 28980318 29630454SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 8:33 PM CDT | Mesoscale Discussion | SPC | Anderson, Camp, Cherokee, Collin, Dallas, Delta and 22 more | 87 min |
| Jun 13, 8:51 PM CDT | Mesoscale Discussion | SPC | Andrews, Brewster, Crane, Culberson, Dawson, Ector and 12 more | 84 min |
| Jun 14, 1:36 AM CDT | Mesoscale Discussion | SPC | Anderson, Angelina, Cherokee, Clay, Collin, Cooke and 36 more | 2 hr |
| Jun 14, 3:14 PM CDT | Mesoscale Discussion | SPC | Armstrong, Bailey, Briscoe, Carson, Castro, Cochran and 21 more | 61 min |
| Jun 14, 3:46 PM CDT | Severe Thunderstorm Watch | SPC | Armstrong, Bailey, Briscoe, Carson, Castro, Childress and 38 more | 9 hr |
Nearby
Mesoscale Discussions in Texas, 2012Every mesoscale discussion in 2012
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.