Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 2406

November 16, 200429 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Nov 16, 2004, 5:54 PM CST for 29 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Nov 16, 2004, 5:54 PM CST (23:54 UTC)
Expired
Nov 16, 2004, 8:00 PM CST
In force
2 hr
Issued by
the Storm Prediction Center
All 29 counties

Aransas County, TX, Atascosa County, TX, Bee County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Caldwell County, TX, Calhoun County, TX, Comal County, TX, DeWitt County, TX, Gillespie County, TX, Goliad County, TX, Gonzales County, TX, Guadalupe County, TX, Hays County, TX, Jim Wells County, TX, Karnes County, TX, Kendall County, TX, La Salle County, TX, Lavaca County, TX, Live Oak County, TX, Llano County, TX, McMullen County, TX, Nueces County, TX, Refugio County, TX, San Patricio County, TX, Travis County, TX, Victoria County, TX, Wilson County, TX

The radar

The Austin/San Antonio radar (KEWX), 71 km from the middle of the area, began a volume at 23:56 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

Del Rio, TX (KDRT), launched 12:00Z, 11.9 hours before the alert went out and 251 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 2004-11-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2004-11-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 192 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
566 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
192 m²/s²
0-3 km storm-relative helicity
311 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

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Nearby

Mesoscale Discussions in Texas, 2004Every mesoscale discussion in 2004

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.