Alert archive / Texas / Mesoscale Discussions in 2016

Mesoscale Discussion 387

April 15, 201613 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 15, 2016, 5:13 PM CDT for 13 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Apr 15, 2016, 5:13 PM CDT (22:13 UTC)
Expired: Apr 15, 2016, 7:15 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center
Chance of a watch: 40%

Counties Andrews County, TX, Bailey County, TX, Briscoe County, TX, Cochran County, TX, Floyd County, TX, Gaines County, TX, Hale County, TX, Hockley County, TX, Lamb County, TX, Lubbock County, TX, Swisher County, TX, Terry County, TX, Yoakum County, TX

The radar

The Lubbock radar (KLBB), 39 km from the middle of the area, began a volume at 22:17 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

Midland Regional, TX (KMAF), launched 12:00Z, 10.2 hours before the alert went out and 159 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: 39 J/kg
Mixed-layer CIN: -602 J/kg
Mixed-layer LCL: 1266 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 240 m²/s²
0-3 km storm-relative helicity: 275 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 15, 2:38 PM CDT	Mesoscale Discussion	SPC	Armstrong, Carson, Dallam, Gray, Hansford, Hartley and 8 more	2 hr
Apr 15, 2:57 PM CDT	Tornado Watch	SPC	Armstrong, Carson, Dallam, Deaf Smith, Hansford, Hartley and 6 more	7 hr
Apr 15, 6:51 PM CDT	Mesoscale Discussion	SPC	Dallam, Deaf Smith, Hansford, Hartley, Moore, Oldham and 2 more	114 min

Nearby

Mesoscale Discussions in Texas, 2016 Every mesoscale discussion in 2016

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.