Alert archive / Texas / Mesoscale Discussions in 2015

Mesoscale Discussion 724

May 23, 201534 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 23, 2015, 2:02 PM CDT for 34 counties in Texas. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued
May 23, 2015, 2:02 PM CDT (19:02 UTC)
Expired
May 23, 2015, 3:30 PM CDT
In force
88 min
Issued by
the Storm Prediction Center
Chance of a watch
60%
All 34 counties

Brewster County, TX, Coke County, TX, Concho County, TX, Crane County, TX, Crockett County, TX, Ector County, TX, Edwards County, TX, Glasscock County, TX, Howard County, TX, Irion County, TX, Jeff Davis County, TX, Kimble County, TX, Kinney County, TX, Martin County, TX, Maverick County, TX, Menard County, TX, Midland County, TX, Mitchell County, TX, Nolan County, TX, Pecos County, TX, Presidio County, TX, Reagan County, TX, Real County, TX, Reeves County, TX, Runnels County, TX, Schleicher County, TX, Sterling County, TX, Sutton County, TX, Terrell County, TX, Tom Green County, TX, Upton County, TX, Val Verde County, TX, Ward County, TX, Winkler County, TX

The radar

The Midland/Odessa radar (KMAF), 186 km from the middle of the area, began a volume at 19:04 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

Del Rio, TX (KDLF), launched 12:00Z, 7.0 hours before the alert went out and 164 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-pSkew-T log-p diagram, Del Rio, TX at 12:00Z on 2015-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2727 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 12:00Z on 2015-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
2727 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
601 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
226 m²/s²
Significant tornado parameter
1.4
Supercell composite
8.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 22, 7:06 PM CDTMesoscale DiscussionSPCCrane, Ector, Loving, Pecos, Reeves, Ward and 1 more114 min
May 23, 12:35 AM CDTMesoscale DiscussionSPCBailey, Castro, Cochran, Deaf Smith, Hockley, Lamb and 6 more115 min
May 23, 5:38 AM CDTMesoscale DiscussionSPCArmstrong, Briscoe, Carson, Castro, Collingsworth, Donley and 9 more97 min
May 23, 12:17 PM CDTMesoscale DiscussionSPCBaylor, Briscoe, Castro, Childress, Cottle, Crosby and 17 more2 hr
May 23, 1:16 PM CDTTornado WatchSPCArcher, Armstrong, Bailey, Baylor, Briscoe, Castro and 31 more6 hr
May 23, 3:04 PM CDTTornado WatchSPCAndrews, Borden, Brewster, Brown, Callahan, Coke and 49 more6 hr
May 23, 3:44 PM CDTMesoscale DiscussionSPCArcher, Bailey, Baylor, Briscoe, Castro, Childress and 27 more2 hr
May 23, 5:04 PM CDTMesoscale DiscussionSPCArcher, Baylor, Bosque, Childress, Clay, Collin and 34 more2 hr
May 23, 5:30 PM CDTTornado WatchSPCArcher, Baylor, Briscoe, Childress, Clay, Collin and 30 more9 hr
May 23, 6:06 PM CDTMesoscale DiscussionSPCAndrews, Atascosa, Bandera, Bexar, Blanco, Borden and 61 more114 min
May 23, 6:19 PM CDTTornado WatchSPCAtascosa, Bandera, Bastrop, Bee, Bexar, Blanco and 30 more9 hr
May 23, 6:37 PM CDTMesoscale DiscussionSPCArcher, Clay, Cooke, Denton, Grayson, Montague and 2 more83 min

Nearby

Mesoscale Discussions in Texas, 2015Every mesoscale discussion in 2015

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.