Alert archive / Texas / Mesoscale Discussions in 2006

Mesoscale Discussion 771

May 5, 200650 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 5, 2006, 11:15 PM CDT for 50 counties in Texas. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued
May 5, 2006, 11:15 PM CDT (04:15 UTC)
Expired
May 6, 2006, 12:45 AM CDT
In force
90 min
Issued by
the Storm Prediction Center
All 50 counties

Bell County, TX, Bosque County, TX, Brazos County, TX, Brown County, TX, Burnet County, TX, Callahan County, TX, Coke County, TX, Coleman County, TX, Comanche County, TX, Concho County, TX, Coryell County, TX, Eastland County, TX, Ellis County, TX, Erath County, TX, Falls County, TX, Fisher County, TX, Freestone County, TX, Grimes County, TX, Hamilton County, TX, Hill County, TX, Hood County, TX, Houston County, TX, Irion County, TX, Johnson County, TX, Jones County, TX, Lampasas County, TX, Leon County, TX, Limestone County, TX, Madison County, TX, McCulloch County, TX, McLennan County, TX, Milam County, TX, Mills County, TX, Mitchell County, TX, Navarro County, TX, Nolan County, TX, Robertson County, TX, Runnels County, TX, San Jacinto County, TX, San Saba County, TX, Scurry County, TX, Shackelford County, TX, Somervell County, TX, Stephens County, TX, Sterling County, TX, Taylor County, TX, Tom Green County, TX, Trinity County, TX, Walker County, TX, Williamson County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 130 km from the middle of the area, began a volume at 04:16 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

Fort Worth, TX (KFWD), launched 00:00Z, 4.3 hours before the alert went out and 153 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, Fort Worth, TX at 00:00Z on 2006-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 510 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, Fort Worth, TX at 00:00Z on 2006-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -50 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
510 J/kg
Mixed-layer CIN
-138 J/kg
Mixed-layer LCL
1221 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
-50 m²/s²
0-3 km storm-relative helicity
38 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.3

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
May 5, 7:07 PM CDTSevere Thunderstorm WatchSPCArcher, Baylor, Bosque, Clay, Comanche, Coryell and 17 more6 hr
May 5, 7:26 PM CDTMesoscale DiscussionSPCAtascosa, Bandera, Bexar, Blanco, Comal, Edwards and 15 more2 hr
May 5, 9:24 PM CDTTornado WatchSPCBell, Bosque, Brown, Callahan, Coke, Coleman and 39 more8 hr
May 5, 11:40 PM CDTSevere Thunderstorm WatchSPCBastrop, Blanco, Burnet, Fayette, Gillespie, Lee and 3 more5 hr
May 6, 1:28 AM CDTTornado WatchSPCAustin, Brazoria, Brazos, Burleson, Chambers, Colorado and 17 more7 hr
May 6, 2:31 AM CDTMesoscale DiscussionSPCBastrop, Blanco, Brazos, Burleson, Caldwell, Comal and 15 more89 min
May 6, 6:48 AM CDTMesoscale DiscussionSPCChambers, Hardin, Jasper, Jefferson, Newton, Orange and 1 more57 min
May 6, 12:11 PM CDTMesoscale DiscussionSPCBandera, Blanco, Burnet, Edwards, Gillespie, Kendall and 11 more2 hr
May 6, 2:31 PM CDTMesoscale DiscussionSPCBrooks, Cameron, Hidalgo, Jim Hogg, Kenedy, Starr and 2 more119 min
May 6, 2:37 PM CDTSevere Thunderstorm WatchSPCBandera, Bexar, Blanco, Burnet, Comal, Edwards and 16 more6 hr
May 6, 5:35 PM CDTMesoscale DiscussionSPCBlanco, Burnet, Gillespie, Kendall, Kerr, Kimble and 3 more85 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.