Alert archive / Texas / Mesoscale Discussions in 2016

Mesoscale Discussion 634

May 16, 201613 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 16, 2016, 3:24 PM CDT for 13 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: May 16, 2016, 3:24 PM CDT (20:24 UTC)
Expired: May 16, 2016, 5:30 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center
Chance of a watch: 20%

Counties Brewster County, TX, Concho County, TX, Crockett County, TX, Irion County, TX, Menard County, TX, Presidio County, TX, Reagan County, TX, Schleicher County, TX, Sterling County, TX, Sutton County, TX, Terrell County, TX, Tom Green County, TX, Val Verde County, TX

The radar

The Midland/Odessa radar (KMAF), 194 km from the middle of the area, began a volume at 20:28 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, 8.4 hours before the alert went out and 195 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: 5 J/kg
Mixed-layer CIN: -556 J/kg
Mixed-layer LCL: 1637 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 208 m²/s²
0-3 km storm-relative helicity: 292 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
May 16, 2:06 PM CDT	Mesoscale Discussion	SPC	Armstrong, Briscoe, Carson, Childress, Collingsworth, Cottle and 19 more	84 min
May 16, 2:29 PM CDT	Severe Thunderstorm Watch	SPC	Armstrong, Carson, Collingsworth, Dallam, Deaf Smith, Donley and 14 more	11 hr
May 16, 5:58 PM CDT	Tornado Watch	SPC	Dallam, Hansford, Hartley, Hutchinson, Moore, Sherman	3 hr

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.