Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 1443

June 28, 20045 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 28, 2004, 5:34 PM CDT for 5 counties in Texas. It was in force for 56 min.

The area

The outline as issued.

The facts

Issued
Jun 28, 2004, 5:34 PM CDT (22:34 UTC)
Expired
Jun 28, 2004, 6:30 PM CDT
In force
56 min
Issued by
the Storm Prediction Center

Counties Angelina County, TX, Polk County, TX, Sabine County, TX, San Augustine County, TX, Tyler County, TX

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 10.6 hours before the alert went out and 147 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, Lake Charles Mun, LA at 12:00Z on 2004-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2696 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, Lake Charles Mun, LA at 12:00Z on 2004-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 square meters per square second.1939Sfc1 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
2696 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
767 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
98 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.2

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
Jun 27, 7:20 PM CDTMesoscale DiscussionSPCBailey, Cochran, Deaf Smith, Hartley, Oldham, Parmer and 1 more85 min
Jun 27, 10:19 PM CDTMesoscale DiscussionSPCBailey, Cochran, Deaf Smith, Hockley, Lamb, Parmer and 2 more56 min
Jun 28, 12:58 PM CDTMesoscale DiscussionSPCAngelina, Aransas, Austin, Bastrop, Bee, Brazoria and 46 more2 hr

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.