Alert archive / Texas / Mesoscale Discussions in 2008
Mesoscale Discussion 1069
The Storm Prediction Center issued this mesoscale discussion at May 27, 2008, 11:28 PM CDT for 40 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 27, 2008, 11:28 PM CDT (04:28 UTC)
- Expired
- May 28, 2008, 1:30 AM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 40 counties
Andrews County, TX, Borden County, TX, Brown County, TX, Callahan County, TX, Coke County, TX, Coleman County, TX, Comanche County, TX, Concho County, TX, Crane County, TX, Crockett County, TX, Dawson County, TX, Eastland County, TX, Ector County, TX, Erath County, TX, Gaines County, TX, Glasscock County, TX, Hamilton County, TX, Howard County, TX, Irion County, TX, Kimble County, TX, Lampasas County, TX, Martin County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Midland County, TX, Mills County, TX, Mitchell County, TX, Nolan County, TX, Palo Pinto County, TX, Reagan County, TX, Runnels County, TX, San Saba County, TX, Schleicher County, TX, Scurry County, TX, Sterling County, TX, Sutton County, TX, Taylor County, TX, Tom Green County, TX, Upton County, TX
The radar
The San Angelo radar (KSJT), 51 km from the middle of the area, began a volume at 04:28 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, 4.5 hours before the alert went out and 133 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
- 2067 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 1841 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 80 m²/s²
- 0-3 km storm-relative helicity
- 231 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 8.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 ACUS11 KWNS 280428 SWOMCD SPC MCD 280428 TXZ000-NMZ000-280630- MESOSCALE DISCUSSION 1069 NWS STORM PREDICTION CENTER NORMAN OK 1128 PM CDT TUE MAY 27 2008 AREAS AFFECTED...PORTIONS WRN THROUGH CENTRAL TX. CONCERNING...SEVERE THUNDERSTORM WATCH 382... VALID 280428Z - 280630Z THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 382 CONTINUES. LINEAR MCS -- WITH OCCASIONAL/EMBEDDED LEWP FORMATIONS -- CONTINUES TO FORWARD-PROPAGATE SEWD ACROSS WW AREA WITH MAIN THREAT BEING WIND DAMAGE. ISOLATED...MARGINALLY SVR HAIL ALSO IS POSSIBLE WITH ELEVATED TSTMS THAT MAY CONTINUE TO DEVELOP ACROSS NWRN/WRN PORTIONS WW -- BEHIND ITS OUTFLOW BOUNDARY. AS OF 04Z...COMPLEX WAS MOVING ACROSS I-20 CORRIDOR BETWEEN MWL-ABI...WITH MOST INTENSE PORTION ALONG WRN EDGE AND MOVING SSEWD TOWARD SJT. WRN SEGMENT MAY REMAIN THAT PORTION MOST CAPABLE OF SUSTAINED SVR WIND POTENTIAL...BECAUSE OF ITS INTERACTION WITH OLD OUTFLOW BOUNDARY THAT STILL IS MOVING WWD ACROSS W-CENTRAL TX. LOW LEVEL CONVERGENCE/ASCENT WILL REMAIN MAXIMIZED ALONG AND JUST E OF OLDER OUTFLOW BOUNDARY...WHICH EXTENDED FROM JUST W SJT SSEWD-SEWD ACROSS PORTIONS SCHLEICHER/SUTTON/REAL COUNTIES TO UPPER TX COAST...AS OF 04Z. STRONGEST STORM-RELATIVE INFLOW WILL CONTINUE OVER W-CENTRAL TX. SJT VWP SHOWING 2-2.5 KM DEEP SSELY-SLY LLJ OF 35 KT THAT BEGINS WITHIN LESS THAN A HALF KM AGL...AND WHICH IS FCST TO CONTINUE THROUGH AT LEAST 08Z. PROSPECTIVE INFLOW LAYER WILL REMAIN FAVORABLY UNSTABLE...WITH MODIFIED DRT/MAF RAOBS AND RUC SOUNDINGS INDICATING MLCAPES 1000-1500 J/KG AND MUCAPE 1500-2000 J/KG PERSISTING FOR A FEW MORE HOURS. ..EDWARDS.. 05/28/2008 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...FWD...EWX...SJT...LUB...MAF... 32930257 33120186 32990081 32570062 32440013 32469930 32759856 33069798 31119810 30929850 30919895 30509899 30489934 30299936 30290174 30600167 30940190 31070241 31200247 31260274 32090276 32110305 32900304
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 8:48 PM CDT | Mesoscale Discussion | SPC | Andrews, Archer, Baylor, Borden, Brewster, Brown and 50 more | 87 min |
| May 27, 9:39 PM CDT | Severe Thunderstorm Watch | SPC | Andrews, Borden, Brown, Callahan, Coke, Coleman and 42 more | 5 hr |
| May 28, 2:03 AM CDT | Mesoscale Discussion | SPC | Andrews, Borden, Concho, Dawson, Ector, Glasscock and 15 more | 57 min |
| May 28, 2:54 PM CDT | Mesoscale Discussion | SPC | Culberson, Reeves | 96 min |
Nearby
Mesoscale Discussions in Texas, 2008Every mesoscale discussion in 2008
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.