Alert archive / Texas / Mesoscale Discussions in 2011
Mesoscale Discussion 232
The Storm Prediction Center issued this mesoscale discussion at Mar 18, 2011, 5:53 PM CDT for 24 counties in Texas. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 18, 2011, 5:53 PM CDT (22:53 UTC)
- Expired
- Mar 18, 2011, 8:30 PM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
All 24 counties
Borden County, TX, Callahan County, TX, Coke County, TX, Coleman County, TX, Crane County, TX, Dawson County, TX, Ector County, TX, Fisher County, TX, Glasscock County, TX, Howard County, TX, Jones County, TX, Kent County, TX, Martin County, TX, Midland County, TX, Mitchell County, TX, Nolan County, TX, Pecos County, TX, Reagan County, TX, Runnels County, TX, Scurry County, TX, Shackelford County, TX, Sterling County, TX, Taylor County, TX, Upton County, TX
The radar
The Midland/Odessa radar (KMAF), 83 km from the middle of the area, began a volume at 22:56 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, 10.9 hours before the alert went out and 84 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
- 21 J/kg
- Mixed-layer CIN
- -438 J/kg
- Mixed-layer LCL
- 2923 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
541
ACUS11 KWNS 182253
SWOMCD
SPC MCD 182253
TXZ000-190130-
MESOSCALE DISCUSSION 0232
NWS STORM PREDICTION CENTER NORMAN OK
0553 PM CDT FRI MAR 18 2011
AREAS AFFECTED...PORTIONS OF W CNTRL TX
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 182253Z - 190130Z
STRONG STORMS ARE EXPECTED TO PERSIST FOR A FEW MORE HOURS BEFORE
DISSIPATING BY LATE EVENING. MARGINALLY SEVERE HAIL OR WIND GUSTS
MAY OCCUR...BUT THERE SHOULD NOT BE ANY ORGANIZED SEVERE THREAT.
STRONG HEATING HAS RESULTED IN VERY STEEP LOW TO MID LEVEL LAPSE
RATE PROFILES OVER SW TX S OF A FRONTAL BOUNDARY WHICH WAS
DECELERATING. WEAK CONVERGENCE ALONG THE FRONT AND SUFFICIENT
MOISTURE HAS RESULTED IN SCATTERED STRONG STORMS.
WIND PROFILES ALOFT ARE GENERALLY WEAK WITH SOME RIDGINESS WITH LESS
THAN 30 KTS OF MID LEVEL FLOW NOTED ON AREA PROFILERS. IN
ADDITION...WINDS IN THE LOWEST FEW KM ARE WEAK AS WELL...WHICH DOES
NOT LEND SUPPORT TO UPSCALE GROWTH. HOWEVER...A SELY LOW LEVEL JET
IS EXPECTED TO INCREASE AFTER SUNSET...WHICH MAY PUSH THE EFFECTIVE
BOUNDARY A BIT FARTHER N ACROSS THE S PLAINS. WHILE THIS MAY ALLOW
FOR ISOLATED STORMS TO PERSIST THROUGH ABOUT 06Z...THE THREAT IS NOT
EXPECTED TO WARRANT A WATCH.
..JEWELL.. 03/18/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...FWD...SJT...LUB...MAF...
LAT...LON 33030205 33240092 33009931 32699893 31859899 31699989
31110176 30530247 30590278 31240276 32120270 32470247
33030205Nearby
Mesoscale Discussions in Texas, 2011Every mesoscale discussion in 2011
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.