Alert archive / Texas / Mesoscale Discussions in 2012
Mesoscale Discussion 952
The Storm Prediction Center issued this mesoscale discussion at May 28, 2012, 11:25 PM CDT for 16 counties in Texas. It was in force for 35 min.
The area
The outline as issued.
The facts
- Issued
- May 28, 2012, 11:25 PM CDT (04:25 UTC)
- Expired
- May 29, 2012, 12:00 AM CDT
- In force
- 35 min
- Issued by
- the Storm Prediction Center
Counties Bosque County, TX, Brown County, TX, Coleman County, TX, Coryell County, TX, Dallas County, TX, Ellis County, TX, Hamilton County, TX, Hill County, TX, Hopkins County, TX, Hunt County, TX, Kaufman County, TX, Lampasas County, TX, Mills County, TX, Nolan County, TX, Rockwall County, TX, Taylor County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 76 km from the middle of the area, began a volume at 04:27 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, 4.4 hours before the alert went out and 91 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
- 1125 J/kg
- Mixed-layer CIN
- -84 J/kg
- Mixed-layer LCL
- 1953 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
The text
As transmitted, in the capitals the NWS used until 2016.
588
ACUS11 KWNS 290426
SWOMCD
SPC MCD 290425
TXZ000-290500-
MESOSCALE DISCUSSION 0952
NWS STORM PREDICTION CENTER NORMAN OK
1125 PM CDT MON MAY 28 2012
AREAS AFFECTED...WCNTRL THROUGH NCNTRL TX
CONCERNING...SEVERE THUNDERSTORM WATCH 310...
VALID 290425Z - 290500Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 310
CONTINUES.
SUMMARY...ISOLATED HAIL AND GUSTY WINDS REMAIN POSSIBLE WITH STORMS
FROM WCNTRL THROUGH NCNTRL TX...BUT THREAT IS BECOMING INCREASINGLY
MARGINAL. WW 310 IS SCHEDULED TO EXPIRE AT 05Z...AND ANOTHER WATCH
IS NOT ANTICIPATED.
DISCUSSION...STORMS CONTINUE ALONG PROGRESSIVE PORTION OF OUTFLOW
BOUNDARY OVER NCNTRL TX AS WELL AS FARTHER WEST WHERE STORMS ARE
DEVELOPING WITHIN ZONE OF ISENTROPIC LIFT NORTH OF THE STATIONARY
PORTION OF THE OUTFLOW BOUNDARY. MOSTLY SUB-SEVERE WINDS REMAIN
LIKELY ALONG LEADING GUST FRONT IN NCNTRL TX WHILE HAIL IS MAIN
THREAT FARTHER WEST WITH ELEVATED STORMS NORTH OF THE BOUNDARY.
STORMS IN NCNTRL TX ARE MOVING TOWARD MORE STABLE AIR AND OVERALL
INTENSITIES SHOULD CONTINUE TO WANE WITH TIME.
..DIAL.. 05/29/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...FWD...EWX...SJT...MAF...
LAT...LON 31569848 32599706 33689597 33129553 30999815 32250072
32780003 31569848SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 7:44 PM CDT | Mesoscale Discussion | SPC | Bosque, Brown, Coleman, Collin, Comanche, Concho and 18 more | 91 min |
| May 28, 9:35 PM CDT | Mesoscale Discussion | SPC | Brown, Callahan, Coleman, Comanche, Cooke, Denton and 16 more | 55 min |
| May 29, 3:06 PM CDT | Mesoscale Discussion | SPC | Hardeman, Wichita, Wilbarger | 84 min |
| May 29, 3:55 PM CDT | Severe Thunderstorm Watch | SPC | Clay, Wichita, Wilbarger | 12 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.