Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 140

February 28, 2004Lea County, New Mexico; 22 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Feb 28, 2004, 7:24 PM MST for Lea County, New Mexico; 22 counties in Texas. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Feb 28, 2004, 7:24 PM MST (02:24 UTC)
Expired
Feb 28, 2004, 10:00 PM MST
In force
3 hr
Issued by
the Storm Prediction Center
All 23 counties

Lea County, NM, Andrews County, TX, Borden County, TX, Coke County, TX, Crane County, TX, Crockett County, TX, Dawson County, TX, Ector County, TX, Gaines County, TX, Glasscock County, TX, Howard County, TX, Irion County, TX, Lynn County, TX, Martin County, TX, Midland County, TX, Mitchell County, TX, Reagan County, TX, Scurry County, TX, Sterling County, TX, Terry County, TX, Upton County, TX, Winkler County, TX, Yoakum County, TX

The nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 2.4 hours before the alert went out and 13 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, Midland Regional, TX at 00:00Z on 2004-02-29Temperature 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, Midland Regional, TX at 00:00Z on 2004-02-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 square meters per square second.1939587897117Sfc1 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
843 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
66 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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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 29, 12:11 AM MSTMesoscale DiscussionSPCBrown, Callahan, Coke, Coleman, Concho, Crockett and 15 more3 hr
Feb 29, 6:33 AM MSTMesoscale DiscussionSPCBell, Bosque, Collin, Cooke, Coryell, Dallas and 21 more117 min

Nearby

Mesoscale Discussions in Texas, 2004Mesoscale Discussions in New Mexico, 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.