Alert archive / Texas / Mesoscale Discussions in 2006
Mesoscale Discussion 310
The Storm Prediction Center issued this mesoscale discussion at Mar 18, 2006, 11:30 PM CST for 21 counties in Texas. It was in force for 90 min.
The area
The outline as issued.
The facts
- Issued
- Mar 18, 2006, 11:30 PM CST (05:30 UTC)
- Expired
- Mar 19, 2006, 1:00 AM CST
- In force
- 90 min
- Issued by
- the Storm Prediction Center
All 21 counties
Bandera County, TX, Brown County, TX, Callahan County, TX, Coleman County, TX, Concho County, TX, Crockett County, TX, Edwards County, TX, Gillespie County, TX, Irion County, TX, Kerr County, TX, Kimble County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Real County, TX, Runnels County, TX, Schleicher County, TX, Shackelford County, TX, Sutton County, TX, Taylor County, TX, Tom Green County, TX
The radar
The San Angelo radar (KSJT), 97 km from the middle of the area, began a volume at 05:33 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 5.5 hours before the alert went out and 187 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
- 1296 J/kg
- Mixed-layer CIN
- -102 J/kg
- Mixed-layer LCL
- 1421 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 239 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 7.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 ACUS11 KWNS 190530 SWOMCD SPC MCD 190530 TXZ000-190700- MESOSCALE DISCUSSION 0310 NWS STORM PREDICTION CENTER NORMAN OK 1130 PM CST SAT MAR 18 2006 AREAS AFFECTED...PORTIONS CENTRAL/SW TX CONCERNING...SEVERE THUNDERSTORM WATCH 94... VALID 190530Z - 190700Z LARGE AREA OF TSTMS WILL MOVE EWD OUT OF ERN PORTIONS WW DURING NEXT 2 HOURS WITH HEAVY RAINFALL AND OCCASIONAL HAIL BEING MAIN THREATS. OVERALL SEVERE POTENTIAL APPEARS TO BE DIMINISHING...REF MESOSCALE DISCUSSION 309 FOR MORE DETAILS. ADDITIONAL ACTIVITY IS DEVELOPING OVER PORTIONS TERRELL/CROCKETT COUNTIES...IN ZONE OF ELEVATED WAA/ASCENT BEHIND OUTFLOW BOUNDARY. THESE TSTMS WILL MOVE NEWD ACROSS CROCKETT COUNTY TOWARD AREA BETWEEN SJT-JCT...WITH POTENTIAL FOR HAIL AS WELL. MOST UNSTABLE AIR MASS REMAINS NEAR AND S OF QUASISTATIONARY SFC FRONTAL ZONE -- ANALYZED AT 5Z FROM NEAR VCT ACROSS SAT AREA THEN WNWWD OVER CROCKETT COUNTY. MUCAPES 1000-1500 J/KG ARE EVIDENT OVER THIS REGION...THOUGH STRONG CINH SHOULD SUPPRESS MOST DEVELOPMENT S OF FRONT. ELEVATED CONVECTION SHOULD CONTINUE TO FORM TO ITS N WITH MUCAPES 500-1000 J/KG AND 60-70 KT EFFECTIVE SHEAR...ROOTED JUST BENEATH 850 MB LEVEL BASED ON RUC SOUNDINGS. ..EDWARDS.. 03/19/2006 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...FWD...EWX...SJT...MAF... 29689991 30230065 30200200 31390099 32859933 32589896 31729898 31159889 30419880 29749909 29619960
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 18, 7:13 PM CST | Severe Thunderstorm Watch | SPC | Andrews, Bandera, Borden, Callahan, Coke, Coleman and 42 more | 7 hr |
| Mar 18, 8:58 PM CST | Mesoscale Discussion | SPC | Bandera, Borden, Brown, Callahan, Coke, Coleman and 34 more | 2 hr |
| Mar 18, 10:15 PM CST | Mesoscale Discussion | SPC | Bell, Blanco, Bosque, Brown, Burnet, Callahan and 28 more | 2 hr |
| Mar 19, 1:23 AM CST | Mesoscale Discussion | SPC | Bandera, Bexar, Blanco, Burnet, Comal, Crockett and 18 more | 37 min |
| Mar 19, 2:05 AM CST | Tornado Watch | SPC | Blanco, Burnet, Concho, Edwards, Gillespie, Kerr and 9 more | 6 hr |
| Mar 19, 4:47 AM CST | Mesoscale Discussion | SPC | Bell, Blanco, Burnet, Concho, Edwards, Gillespie and 13 more | 88 min |
| Mar 19, 7:55 AM CST | Mesoscale Discussion | SPC | Bandera, Bell, Blanco, Bosque, Brown, Burnet and 43 more | 35 min |
| Mar 19, 8:01 AM CST | Severe Thunderstorm Watch | SPC | Blanco, Burnet, Gillespie, Llano, Travis, Williamson | 2 hr |
| Mar 19, 10:12 AM CST | Mesoscale Discussion | SPC | Anderson, Bell, Bosque, Brown, Burnet, Camp and 42 more | 93 min |
| Mar 19, 12:15 PM CST | Mesoscale Discussion | SPC | Callahan, Coke, Coleman, Concho, Crockett, Glasscock and 13 more | 2 hr |
| Mar 19, 3:02 PM CST | Mesoscale Discussion | SPC | Bandera, Bell, Blanco, Burnet, Comal, Coryell and 20 more | 118 min |
| Mar 19, 3:38 PM CST | Tornado Watch | SPC | Bandera, Brown, Coke, Coleman, Concho, Crockett and 20 more | 5 hr |
| Mar 19, 5:36 PM CST | Mesoscale Discussion | SPC | Bandera, Brown, Concho, Edwards, Gillespie, Irion and 16 more | 114 min |
| Mar 19, 5:51 PM CST | Mesoscale Discussion | SPC | Andrews, Bailey, Cochran, Deaf Smith, Ector, Gaines and 8 more | 54 min |
Nearby
Mesoscale Discussions in Texas, 2006Every mesoscale discussion in 2006
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.