Alert archive / Texas / Mesoscale Discussions in 2019

Mesoscale Discussion 923

June 1, 2019Cotton County, Jackson County, Tillman County, Oklahoma; 11 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 1, 2019, 1:53 PM CDT for Cotton County, Jackson County, Tillman County, Oklahoma; 11 counties in Texas. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued: Jun 1, 2019, 1:53 PM CDT (18:53 UTC)
Expired: Jun 1, 2019, 3:30 PM CDT
In force: 97 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

Counties Cotton County, OK, Jackson County, OK, Tillman County, OK, Archer County, TX, Baylor County, TX, Clay County, TX, Foard County, TX, Hardeman County, TX, Jack County, TX, Knox County, TX, Throckmorton County, TX, Wichita County, TX, Wilbarger County, TX, Young County, TX

The radar

The Altus AFB radar (KFDR), 55 km from the middle of the area, began a volume at 18:54 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 12:00Z, 6.9 hours before the alert went out and 276 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: 1470 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 1268 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 54 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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
Jun 1, 11:49 AM CDT	Mesoscale Discussion	SPC	Beckham, Blaine, Caddo, Canadian, Comanche, Custer and 9 more	116 min
Jun 1, 1:32 PM CDT	Mesoscale Discussion	SPC	Cimarron	118 min
Jun 1, 1:53 PM CDT	Severe Thunderstorm Watch	SPC	Beaver, Cimarron, Texas	9 hr
May 31, 8:53 PM CDT	Mesoscale Discussion	SPC	Brewster, Culberson, Hudspeth, Jeff Davis, Loving, Pecos and 5 more	97 min
Jun 1, 4:36 PM CDT	Mesoscale Discussion	SPC	Andrews, Brewster, Crane, Culberson, Ector, Gaines and 7 more	24 min
Jun 1, 4:50 PM CDT	Severe Thunderstorm Watch	SPC	Brewster, Culberson, Jeff Davis, Loving, Pecos, Presidio and 4 more	8 hr
Jun 1, 5:52 PM CDT	Mesoscale Discussion	SPC	Collin, Dallas, Denton, Ellis, Johnson, Parker and 2 more	53 min
Jun 1, 6:53 PM CDT	Mesoscale Discussion	SPC	Bailey, Borden, Castro, Cochran, Crosby, Dawson and 12 more	67 min

Nearby

Mesoscale Discussions in Texas, 2019 Mesoscale Discussions in Oklahoma, 2019 Every mesoscale discussion in 2019

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.