Alert archive / Texas / Mesoscale Discussions in 2003

Mesoscale Discussion 600

April 27, 200314 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 27, 2003, 2:58 PM CDT for 14 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Apr 27, 2003, 2:58 PM CDT (19:58 UTC)
Expired: Apr 27, 2003, 5:00 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

Counties Coke County, TX, Crane County, TX, Crockett County, TX, Glasscock County, TX, Irion County, TX, Midland County, TX, Pecos County, TX, Reagan County, TX, Schleicher County, TX, Sterling County, TX, Sutton County, TX, Terrell County, TX, Tom Green County, TX, Upton County, TX

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 8.0 hours before the alert went out and 126 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 12 J/kg
Mixed-layer CIN: -385 J/kg
Mixed-layer LCL: 2492 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 121 m²/s²
0-3 km storm-relative helicity: 93 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.

Issued	Product	Office	Counties	Lasted
Apr 27, 5:42 PM CDT	Mesoscale Discussion	SPC	Collingsworth, Gray, Hemphill, Wheeler	3 hr
Apr 27, 6:01 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Callahan, Clay, Fisher, Foard and 16 more	2 hr

Nearby

Mesoscale Discussions in Texas, 2003 Every mesoscale discussion in 2003

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.