Alert archive / Texas / Mesoscale Discussions in 2005

Mesoscale Discussion 590

April 18, 20057 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 18, 2005, 9:09 PM CDT for 7 counties in Texas. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued: Apr 18, 2005, 9:09 PM CDT (02:09 UTC)
Expired: Apr 18, 2005, 10:45 PM CDT
In force: 96 min
Issued by: the Storm Prediction Center

Counties Childress County, TX, Cottle County, TX, Floyd County, TX, Foard County, TX, Hall County, TX, Hardeman County, TX, Motley County, TX

The radar

The Lubbock radar (KLBB), 126 km from the middle of the area, began a volume at 02:09 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

Amarillo Airport, TX (KAMA), launched 00:00Z, 2.2 hours before the alert went out and 162 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3111 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 317 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 19, 3:55 PM CDT	Mesoscale Discussion	SPC	Crockett, Edwards, Irion, Menard, Pecos, Reagan and 7 more	95 min
Apr 19, 5:07 PM CDT	Mesoscale Discussion	SPC	Baylor, Callahan, Childress, Coke, Cottle, Fisher and 13 more	83 min
Apr 19, 5:30 PM CDT	Severe Thunderstorm Watch	SPC	Baylor, Callahan, Childress, Coke, Coleman, Cottle and 15 more	6 hr
Apr 19, 5:49 PM CDT	Mesoscale Discussion	SPC	Collingsworth, Hemphill, Lipscomb, Wheeler	116 min
Apr 19, 6:10 PM CDT	Severe Thunderstorm Watch	SPC	Dimmit, Edwards, Kinney, La Salle, Maverick, Real and 4 more	5 hr

Nearby

Mesoscale Discussions in Texas, 2005 Every mesoscale discussion in 2005

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.