Alert archive / Texas / Mesoscale Discussions in 2019

Mesoscale Discussion 787

May 25, 20194 counties in New Mexico; 14 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 25, 2019, 11:12 AM MDT for 4 counties in New Mexico; 14 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: May 25, 2019, 11:12 AM MDT (17:12 UTC)
Expired: May 25, 2019, 1:15 PM MDT
In force: 2 hr
Issued by: the Storm Prediction Center
Chance of a watch: 60%

Counties Curry County, NM, Lea County, NM, Quay County, NM, Roosevelt County, NM, Andrews County, TX, Bailey County, TX, Castro County, TX, Cochran County, TX, Dallam County, TX, Deaf Smith County, TX, Gaines County, TX, Hartley County, TX, Hockley County, TX, Lamb County, TX, Oldham County, TX, Parmer County, TX, Terry County, TX, Yoakum County, TX

The radar

The Cannon AFB radar (KFDX), 91 km from the middle of the area, began a volume at 17:16 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.

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 5.2 hours before the alert went out and 170 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: 1631 J/kg
Mixed-layer CIN: -81 J/kg
Mixed-layer LCL: 661 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 228 m²/s²
0-3 km storm-relative helicity: 201 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 6.6

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 25, 11:59 AM MDT	Severe Thunderstorm Watch	SPC	Curry, Quay, Roosevelt	7 hr
May 25, 12:51 PM MDT	Severe Thunderstorm Watch	SPC	Lea	7 hr
May 25, 2:49 PM MDT	Mesoscale Discussion	SPC	Curry, Roosevelt	116 min
May 25, 4:35 PM MDT	Mesoscale Discussion	SPC	Lea	115 min
May 25, 5:25 PM MDT	Mesoscale Discussion	SPC	Curry, Quay, Roosevelt	95 min
May 24, 7:18 PM MDT	Mesoscale Discussion	SPC	Hockley, Lamb, Lubbock	57 min
May 25, 12:38 PM MDT	Mesoscale Discussion	SPC	Brewster, Crane, Ector, Loving, Midland, Pecos and 5 more	2 hr
May 25, 2:06 PM MDT	Mesoscale Discussion	SPC	Armstrong, Baylor, Briscoe, Carson, Childress, Collingsworth and 24 more	114 min
May 25, 2:24 PM MDT	Tornado Watch	SPC	Baylor, Briscoe, Childress, Collingsworth, Cottle, Crosby and 19 more	7 hr
May 25, 4:56 PM MDT	Mesoscale Discussion	SPC	Archer, Baylor, Briscoe, Childress, Clay, Collingsworth and 23 more	2 hr

Nearby

Mesoscale Discussions in Texas, 2019 Mesoscale Discussions in New Mexico, 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.