Alert archive / Texas / Mesoscale Discussions in 2012
Mesoscale Discussion 269
The Storm Prediction Center issued this mesoscale discussion at Mar 16, 2012, 7:07 PM CDT for 5 counties in Oklahoma; 38 counties in Texas. It was in force for 113 min.
The area
The outline as issued.
The facts
- Issued
- Mar 16, 2012, 7:07 PM CDT (00:07 UTC)
- Expired
- Mar 16, 2012, 9:00 PM CDT
- In force
- 113 min
- Issued by
- the Storm Prediction Center
All 43 counties
Beckham County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Roger Mills County, OK, Andrews County, TX, Borden County, TX, Brewster County, TX, Briscoe County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Crane County, TX, Crosby County, TX, Dawson County, TX, Dickens County, TX, Donley County, TX, Ector County, TX, Fisher County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Glasscock County, TX, Hall County, TX, Hardeman County, TX, Howard County, TX, Kent County, TX, King County, TX, Lubbock County, TX, Lynn County, TX, Martin County, TX, Midland County, TX, Mitchell County, TX, Motley County, TX, Pecos County, TX, Reagan County, TX, Scurry County, TX, Sterling County, TX, Stonewall County, TX, Terrell County, TX, Upton County, TX, Ward County, TX, Wheeler County, TX
The radar
The Lubbock radar (KLBB), 98 km from the middle of the area, began a volume at 00:07 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, 0.1 hours before the alert went out and 115 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
- 1610 J/kg
- Mixed-layer CIN
- -218 J/kg
- Mixed-layer LCL
- 1186 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 101 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
763
ACUS11 KWNS 170008
SWOMCD
SPC MCD 170007
OKZ000-TXZ000-170200-
MESOSCALE DISCUSSION 0269
NWS STORM PREDICTION CENTER NORMAN OK
0707 PM CDT FRI MAR 16 2012
AREAS AFFECTED...WRN TX AND FAR WRN OK
CONCERNING...SEVERE THUNDERSTORM WATCH 78...79...
VALID 170007Z - 170200Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
78...79...CONTINUES.
SCATTERED STORMS PERSIST ACROSS W TX...ALTHOUGH TRENDS HAVE BEEN
DOWN RECENTLY WITH THE LOSS OF DAYTIME HEATING. INDEED...THESE
STORMS FORMED NEAR THE DRYLINE IN A DEEPLY MIXED AIR MASS...BUT NOW
THE RELATIVELY COOLER AIR E OF THE DRYLINE IS BEGINNING TO SURGE
BACK NWWD. AS THE EVENING PROGRESSES...CIN WILL INCREASE...AND THE
FEW CORES THAT REMAIN ARE LIKELY TO DWINDLE. 00Z SOUNDINGS SHOW AS
MUCH AS TEMPERATURES COOL DOWN THROUGH THE 70S F.
..JEWELL.. 03/17/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...OUN...SJT...LUB...AMA...MAF...
LAT...LON 34819908 30430173 29720258 29630356 29950404 30530419
32010288 34750116 35330069 35869989 35889945 34819908Nearby
Mesoscale Discussions in Texas, 2012Mesoscale Discussions in Oklahoma, 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.