Alert archive / Texas / Mesoscale Discussions in 2006

Mesoscale Discussion 320

March 19, 200622 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Mar 19, 2006, 5:36 PM CST for 22 counties in Texas. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued
Mar 19, 2006, 5:36 PM CST (23:36 UTC)
Expired
Mar 19, 2006, 7:30 PM CST
In force
114 min
Issued by
the Storm Prediction Center
All 22 counties

Bandera County, TX, Brown County, TX, Concho County, TX, Edwards County, TX, Gillespie County, TX, Irion County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Kinney County, TX, Llano County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Mills County, TX, Real County, TX, San Saba County, TX, Schleicher County, TX, Sutton County, TX, Tom Green County, TX, Uvalde County, TX, Val Verde County, TX

The radar

The San Angelo radar (KSJT), 120 km from the middle of the area, began a volume at 23:36 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 12:00Z, 11.6 hours before the alert went out and 150 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.

Skew-T log-pSkew-T log-p diagram, Del Rio, TX at 12:00Z on 2006-03-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 917 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 12:00Z on 2006-03-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 97 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
917 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
610 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
97 m²/s²
0-3 km storm-relative helicity
130 m²/s²
Significant tornado parameter
0.8
Supercell composite
2.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 18, 7:13 PM CSTSevere Thunderstorm WatchSPCAndrews, Bandera, Borden, Callahan, Coke, Coleman and 42 more7 hr
Mar 18, 8:58 PM CSTMesoscale DiscussionSPCBandera, Borden, Brown, Callahan, Coke, Coleman and 34 more2 hr
Mar 18, 10:15 PM CSTMesoscale DiscussionSPCBell, Blanco, Bosque, Brown, Burnet, Callahan and 28 more2 hr
Mar 18, 11:30 PM CSTMesoscale DiscussionSPCBandera, Brown, Callahan, Coleman, Concho, Crockett and 15 more90 min
Mar 19, 1:23 AM CSTMesoscale DiscussionSPCBandera, Bexar, Blanco, Burnet, Comal, Crockett and 18 more37 min
Mar 19, 2:05 AM CSTTornado WatchSPCBlanco, Burnet, Concho, Edwards, Gillespie, Kerr and 9 more6 hr
Mar 19, 4:47 AM CSTMesoscale DiscussionSPCBell, Blanco, Burnet, Concho, Edwards, Gillespie and 13 more88 min
Mar 19, 7:55 AM CSTMesoscale DiscussionSPCBandera, Bell, Blanco, Bosque, Brown, Burnet and 43 more35 min
Mar 19, 8:01 AM CSTSevere Thunderstorm WatchSPCBlanco, Burnet, Gillespie, Llano, Travis, Williamson2 hr
Mar 19, 10:12 AM CSTMesoscale DiscussionSPCAnderson, Bell, Bosque, Brown, Burnet, Camp and 42 more93 min
Mar 19, 12:15 PM CSTMesoscale DiscussionSPCCallahan, Coke, Coleman, Concho, Crockett, Glasscock and 13 more2 hr
Mar 19, 3:02 PM CSTMesoscale DiscussionSPCBandera, Bell, Blanco, Burnet, Comal, Coryell and 20 more118 min
Mar 19, 3:38 PM CSTTornado WatchSPCBandera, Brown, Coke, Coleman, Concho, Crockett and 20 more5 hr
Mar 19, 5:51 PM CSTMesoscale DiscussionSPCAndrews, Bailey, Cochran, Deaf Smith, Ector, Gaines and 8 more54 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.