Alert archive / Texas / Mesoscale Discussions in 2016

Mesoscale Discussion 190

March 8, 201619 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Mar 8, 2016, 6:25 PM CST for 19 counties in Texas. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Mar 8, 2016, 6:25 PM CST (00:25 UTC)
Expired: Mar 8, 2016, 9:00 PM CST
In force: 3 hr
Issued by: the Storm Prediction Center
Chance of a watch: 40%

Counties Bandera County, TX, Brooks County, TX, Dimmit County, TX, Duval County, TX, Edwards County, TX, Frio County, TX, Jim Hogg County, TX, Kerr County, TX, Kinney County, TX, La Salle County, TX, Maverick County, TX, Medina County, TX, Real County, TX, Starr County, TX, Uvalde County, TX, Val Verde County, TX, Webb County, TX, Zapata County, TX, Zavala County, TX

The radar

The Laughlin AFB radar (KDFX), 127 km from the middle of the area, began a volume at 00:26 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 39Mar 8, 7:00 PM CST

The nearest sounding before it

Del Rio, TX (KDLF), launched 00:00Z, 0.4 hours before the alert went out and 160 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: 80 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 3846 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 79 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
Mar 8, 7:03 PM CST	Severe Thunderstorm Watch	SPC	Aransas, Atascosa, Bandera, Bastrop, Bee, Bexar and 46 more	9 hr
Mar 8, 7:07 PM CST	Mesoscale Discussion	SPC	Bosque, Brown, Callahan, Coke, Coleman, Comanche and 37 more	113 min
Mar 8, 9:26 PM CST	Mesoscale Discussion	SPC	Aransas, Atascosa, Bandera, Bastrop, Bee, Bell and 44 more	2 hr
Mar 8, 11:54 PM CST	Mesoscale Discussion	SPC	Aransas, Atascosa, Austin, Bastrop, Bee, Bell and 63 more	2 hr
Mar 9, 3:59 AM CST	Mesoscale Discussion	SPC	Anderson, Angelina, Austin, Brazos, Burleson, Cherokee and 23 more	3 hr
Mar 9, 7:29 AM CST	Mesoscale Discussion	SPC	Angelina, Aransas, Austin, Bee, Brazoria, Brooks and 47 more	2 hr
Mar 9, 7:58 AM CST	Severe Thunderstorm Watch	SPC	Aransas, Bee, Brazoria, Calhoun, Fort Bend, Goliad and 8 more	4 hr
Mar 9, 10:07 AM CST	Mesoscale Discussion	SPC	Chambers, Hardin, Jasper, Jefferson, Liberty, Newton and 2 more	2 hr
Mar 9, 10:29 AM CST	Mesoscale Discussion	SPC	Aransas, Brazoria, Calhoun, Fort Bend, Harris, Jackson and 6 more	91 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.