Alert archive / Texas / Mesoscale Discussions in 2005
Mesoscale Discussion 310
The Storm Prediction Center issued this mesoscale discussion at Mar 19, 2005, 3:27 PM CST for 21 counties in Texas. It was in force for 93 min.
The area
The outline as issued.
The facts
- Issued
- Mar 19, 2005, 3:27 PM CST (21:27 UTC)
- Expired
- Mar 19, 2005, 5:00 PM CST
- In force
- 93 min
- Issued by
- the Storm Prediction Center
All 21 counties
Atascosa County, TX, Bastrop County, TX, Bexar County, TX, Blanco County, TX, Burleson County, TX, Caldwell County, TX, Colorado County, TX, Comal County, TX, DeWitt County, TX, Fayette County, TX, Gonzales County, TX, Guadalupe County, TX, Hays County, TX, Karnes County, TX, Lavaca County, TX, Lee County, TX, McMullen County, TX, Milam County, TX, Travis County, TX, Williamson County, TX, Wilson County, TX
The radar
The Austin/San Antonio radar (KEWX), 53 km from the middle of the area, began a volume at 21:29 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
Corpus Christi, TX (KCRP), launched 12:00Z, 9.5 hours before the alert went out and 178 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
- 368 J/kg
- Mixed-layer CIN
- -139 J/kg
- Mixed-layer LCL
- 678 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 95 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 ACUS11 KWNS 192128 SWOMCD SPC MCD 192127 TXZ000-192300- MESOSCALE DISCUSSION 0310 NWS STORM PREDICTION CENTER NORMAN OK 0327 PM CST SAT MAR 19 2005 AREAS AFFECTED...SOUTH CENTRAL TX CONCERNING...SEVERE THUNDERSTORM WATCH 53... VALID 192127Z - 192300Z ...THUNDERSTORMS WILL DEVELOP/SPREAD INTO ERN PORTIONS OF WW IN THE NEXT FEW HOURS... ONGOING THUNDERSTORM ACTIVITY APPEARS HAMPERED BY RELATIVELY WEAK LOW LEVEL SHEAR/FORCING. RADAR TRENDS SUGGEST LIMITED INFLOW INTO UPDRAFT REGION...THUS LIFETIME CYCLE HAS BEEN REDUCED TO MOSTLY PULSE-TYPE CONVECTION. NWD-DRIFTING CLUSTER OF THUNDERSTORMS WILL SOON SPREAD INTO SERN PORTIONS OF WW AS REMNANTS OF EARLY AFTERNOON CLUSTER PROPAGATES SLOWLY EWD ACROSS BURNET/BLANCO COUNTIES. STRONGEST UPDRAFTS WILL BE THOSE THAT CAN MANAGE TO DEVELOP ALONG OUTFLOW WHERE BOUNDARY LAYER REMAINS MOST BUOYANT. WILL MONITOR COASTAL PLAINS OF TX FOR POSSIBLE WW. ..DARROW.. 03/19/2005 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...HGX...FWD...CRP...EWX... 28149885 30389850 31019667 29389625 28659752
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 19, 12:46 PM CST | Mesoscale Discussion | SPC | Austin, Bandera, Bastrop, Blanco, Burleson, Burnet and 15 more | 119 min |
| Mar 19, 1:40 PM CST | Severe Thunderstorm Watch | SPC | Bandera, Bastrop, Bexar, Blanco, Caldwell, Comal and 15 more | 7 hr |
| Mar 19, 4:38 PM CST | Mesoscale Discussion | SPC | Angelina, Atascosa, Austin, Bee, Brazos, Burleson and 32 more | 67 min |
| Mar 19, 5:00 PM CST | Severe Thunderstorm Watch | SPC | Angelina, Aransas, Austin, Bastrop, Bee, Brazoria and 38 more | 7 hr |
| Mar 19, 5:32 PM CST | Mesoscale Discussion | SPC | Hardin, Jasper, Jefferson, Newton, Orange, Tyler | 118 min |
Nearby
Mesoscale Discussions in Texas, 2005Every mesoscale discussion in 2005
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.