Alert archive / Texas / Mesoscale Discussions in 2017

Mesoscale Discussion 357

March 28, 20177 counties in Oklahoma; 13 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Mar 28, 2017, 5:31 PM CDT for 7 counties in Oklahoma; 13 counties in Texas. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued: Mar 28, 2017, 5:31 PM CDT (22:31 UTC)
Expired: Mar 28, 2017, 7:00 PM CDT
In force: 89 min
Issued by: the Storm Prediction Center

Counties Comanche County, OK, Cotton County, OK, Jackson County, OK, Jefferson County, OK, Kiowa County, OK, Stephens County, OK, Tillman County, OK, Archer County, TX, Baylor County, TX, Clay County, TX, Jack County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Stephens County, TX, Throckmorton County, TX, Wichita County, TX, Wilbarger County, TX, Wise County, TX, Young County, TX

The radar

The Altus AFB radar (KFDR), 55 km from the middle of the area, began a volume at 22:31 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 96Mar 28, 9:25 PM CDT

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 10.5 hours before the alert went out and 191 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: 772 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 229 m²/s²
0-3 km storm-relative helicity: 245 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

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 28, 9:30 AM CDT	Mesoscale Discussion	SPC	Texas	3 hr
Mar 28, 2:44 PM CDT	Mesoscale Discussion	SPC	Carter, Comanche, Cotton, Jackson, Jefferson, Love and 2 more	3 hr
Mar 28, 2:44 PM CDT	Mesoscale Discussion	SPC	Beaver, Beckham, Custer, Dewey, Ellis, Greer and 8 more	2 hr
Mar 28, 3:40 PM CDT	Tornado Watch	SPC	Beckham, Caddo, Carter, Comanche, Cotton, Garvin and 12 more	7 hr
Mar 28, 12:23 PM CDT	Mesoscale Discussion	SPC	Bailey, Borden, Briscoe, Castro, Cochran, Cottle and 23 more	67 min
Mar 28, 12:51 PM CDT	Severe Thunderstorm Watch	SPC	Armstrong, Briscoe, Carson, Castro, Childress, Collingsworth and 34 more	8 hr
Mar 28, 1:25 PM CDT	Mesoscale Discussion	SPC	Coke, Crane, Crockett, Ector, Glasscock, Howard and 8 more	95 min
Mar 28, 1:51 PM CDT	Severe Thunderstorm Watch	SPC	Borden, Callahan, Coke, Coleman, Concho, Crockett and 24 more	8 hr
Mar 28, 6:04 PM CDT	Mesoscale Discussion	SPC	Bandera, Burnet, Edwards, Gillespie, Kerr, Kimble and 7 more	116 min
Mar 28, 6:30 PM CDT	Mesoscale Discussion	SPC	Coke, Crockett, Glasscock, Howard, Irion, Mitchell and 4 more	90 min

Nearby

Mesoscale Discussions in Texas, 2017 Mesoscale Discussions in Oklahoma, 2017 Every mesoscale discussion in 2017

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.