Alert archive / Texas / Mesoscale Discussions in 2015

Mesoscale Discussion 558

May 8, 201532 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 8, 2015, 10:48 PM CDT for 32 counties in Texas. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued
May 8, 2015, 10:48 PM CDT (03:48 UTC)
Expired
May 9, 2015, 12:15 AM CDT
In force
87 min
Issued by
the Storm Prediction Center
All 32 counties

Andrews County, TX, Borden County, TX, Callahan County, TX, Coke County, TX, Crane County, TX, Crockett County, TX, Dawson County, TX, Ector County, TX, Fisher County, TX, Gaines County, TX, Glasscock County, TX, Haskell County, TX, Howard County, TX, Irion County, TX, Jones County, TX, Martin County, TX, Midland County, TX, Mitchell County, TX, Nolan County, TX, Pecos County, TX, Reagan County, TX, Runnels County, TX, Schleicher County, TX, Scurry County, TX, Shackelford County, TX, Sterling County, TX, Sutton County, TX, Taylor County, TX, Terrell County, TX, Throckmorton County, TX, Tom Green County, TX, Upton County, TX

The radar

The Midland/Odessa radar (KMAF), 74 km from the middle of the area, began a volume at 03:47 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

Midland Regional, TX (KMAF), launched 00:00Z, 3.8 hours before the alert went out and 75 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, Midland Regional, TX at 00:00Z on 2015-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Midland Regional, TX at 00:00Z on 2015-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3489 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
105 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 8, 7:27 PM CDTTornado WatchSPCCollin, Cooke, Dallas, Delta, Denton, Fannin and 15 more6 hr
May 8, 8:42 PM CDTMesoscale DiscussionSPCAndrews, Borden, Callahan, Coke, Coleman, Concho and 28 more2 hr
May 8, 10:43 PM CDTMesoscale DiscussionSPCBowie, Delta, Fannin, Franklin, Grayson, Hopkins and 5 more92 min
May 9, 2:34 AM CDTMesoscale DiscussionSPCAndrews, Bailey, Castro, Cochran, Dallam, Dawson and 14 more116 min
May 9, 3:11 AM CDTSevere Thunderstorm WatchSPCAndrews, Armstrong, Bailey, Borden, Briscoe, Carson and 46 more8 hr
May 9, 4:03 AM CDTMesoscale DiscussionSPCArcher, Baylor, Clay, Fisher, Foard, Hardeman and 12 more57 min
May 9, 5:51 AM CDTMesoscale DiscussionSPCArmstrong, Briscoe, Carson, Castro, Childress, Collingsworth and 28 more84 min
May 9, 7:36 AM CDTSevere Thunderstorm WatchSPCFoard, Hardeman, Wichita, Wilbarger6 hr
May 9, 9:41 AM CDTMesoscale DiscussionSPCBowie, Camp, Cass, Collin, Cooke, Dallas and 25 more2 hr
May 9, 1:21 PM CDTTornado WatchSPCArcher, Baylor, Bosque, Brown, Callahan, Clay and 41 more10 hr
May 9, 1:58 PM CDTMesoscale DiscussionSPCBowie, Camp, Cass, Morris, Red River, Titus92 min
May 9, 2:40 PM CDTTornado WatchSPCBowie, Camp, Cass, Franklin, Morris, Red River and 1 more7 hr
May 9, 3:32 PM CDTMesoscale DiscussionSPCArcher, Clay, Coleman, Collin, Comanche, Cooke and 17 more118 min
May 9, 4:52 PM CDTMesoscale DiscussionSPCChildress, Collingsworth, Donley, Gray, Hall, Hemphill and 4 more83 min
May 9, 5:06 PM CDTMesoscale DiscussionSPCCass54 min
May 9, 5:52 PM CDTMesoscale DiscussionSPCBowie, Cass, Clay, Cooke, Delta, Fannin and 9 more83 min
May 9, 6:21 PM CDTMesoscale DiscussionSPCBrown, Coleman, Comanche, Eastland, Erath, Hood and 6 more84 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.