Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 1288

June 15, 200420 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 15, 2004, 1:30 PM CDT for 20 counties in Texas. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued
Jun 15, 2004, 1:30 PM CDT (18:30 UTC)
Expired
Jun 15, 2004, 3:00 PM CDT
In force
90 min
Issued by
the Storm Prediction Center

Counties Bell County, TX, Blanco County, TX, Bosque County, TX, Burnet County, TX, Comanche County, TX, Coryell County, TX, Ellis County, TX, Erath County, TX, Hamilton County, TX, Hill County, TX, Hood County, TX, Johnson County, TX, Lampasas County, TX, Llano County, TX, McLennan County, TX, Mills County, TX, San Saba County, TX, Somervell County, TX, Travis County, TX, Williamson County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 6.5 hours before the alert went out and 158 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 12:00Z on 2004-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1260 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 12:00Z on 2004-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -42 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
1260 J/kg
Mixed-layer CIN
-90 J/kg
Mixed-layer LCL
969 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
-42 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.5

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 15, 1:53 PM CDTMesoscale DiscussionSPCDallam2 hr
Jun 15, 3:05 PM CDTMesoscale DiscussionSPCBailey, Brewster, Dallam, Deaf Smith, Hartley, Jeff Davis and 5 more115 min

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.