Alert archive / Texas / Mesoscale Discussions in 2012
Mesoscale Discussion 806
The Storm Prediction Center issued this mesoscale discussion at May 13, 2012, 11:37 PM CDT for 9 counties in Texas. It was in force for 53 min.
The area
The outline as issued.
The facts
- Issued
- May 13, 2012, 11:37 PM CDT (04:37 UTC)
- Expired
- May 14, 2012, 12:30 AM CDT
- In force
- 53 min
- Issued by
- the Storm Prediction Center
Counties Crane County, TX, Culberson County, TX, Ector County, TX, Jeff Davis County, TX, Loving County, TX, Pecos County, TX, Reeves County, TX, Ward County, TX, Winkler County, TX
The radar
The Midland/Odessa radar (KMAF), 159 km from the middle of the area, began a volume at 04:38 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, 4.6 hours before the alert went out and 158 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
- 2 J/kg
- Mixed-layer CIN
- -196 J/kg
- Mixed-layer LCL
- 2009 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 219 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
510 ACUS11 KWNS 140438 SWOMCD SPC MCD 140437 TXZ000-140530- MESOSCALE DISCUSSION 0806 NWS STORM PREDICTION CENTER NORMAN OK 1137 PM CDT SUN MAY 13 2012 AREAS AFFECTED...FAR WEST TX CONCERNING...SEVERE THUNDERSTORM WATCH 276... VALID 140437Z - 140530Z THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 276 CONTINUES. SUMMARY...DAMAGING WINDS MAY BE NOTED IN ASSOCIATION WITH BOWING MCS AS IT PROGRESSES SEWD ACROSS THE WATCH. DISCUSSION...MATURE MCS HAS EVOLVED ACROSS SERN NM/FAR WEST TX LATE THIS EVENING. THIS COMPLEX OF STORMS IS SPREADING SEWD ALONG A CORRIDOR OF ENHANCED LOW LEVEL WARM ADVECTION WELL AHEAD OF DIGGING SHORT-WAVE TROUGH. OVER THE LAST HOUR OR SO A WELL DEFINED BOW-TYPE STRUCTURE HAS DEVELOPED ALONG THE LEADING EDGE OF THE MCS OVER WARD/REEVES COUNTIES. WINDS GUSTED TO 62KT AT KPEQ WHEN THE SQUALL LINE PASSED THIS SITE AT 0414Z AND DAMAGING WINDS LIKELY PERSIST GIVEN THE BOWING STRUCTURE. GIVEN THE 35KT SEWD STORM MOTION THIS ACTIVITY COULD APPROACH THE SERN CORNER OF WW276 BY 0630Z. IF PRESENT TRENDS CONTINUE...TERRELL AND BREWSTER COUNTIES MAY NEED TO BE ADDED TO THE WATCH. ..DARROW.. 05/14/2012 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...SJT...MAF...EPZ... LAT...LON 31970509 31980254 30410166 30400417 31970509
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 13, 9:14 PM CDT | Mesoscale Discussion | SPC | Culberson, Jeff Davis, Loving, Reeves, Ward | 61 min |
| May 13, 9:21 PM CDT | Severe Thunderstorm Watch | SPC | Brewster, Crane, Culberson, Jeff Davis, Loving, Pecos and 4 more | 7 hr |
| May 14, 2:17 AM CDT | Mesoscale Discussion | SPC | Val Verde | 118 min |
| May 14, 1:55 PM CDT | Mesoscale Discussion | SPC | Brewster, Concho, Crockett, Edwards, Irion, Jeff Davis and 9 more | 3 hr |
| May 14, 2:55 PM CDT | Severe Thunderstorm Watch | SPC | Brewster, Jeff Davis, Pecos, Presidio, Reeves, Terrell | 5 hr |
| May 14, 6:57 PM CDT | Mesoscale Discussion | SPC | Maverick | 63 min |
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.