Alert archive / Texas / Mesoscale Discussions in 2020

Mesoscale Discussion 600

May 15, 202060 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 15, 2020, 2:30 PM CDT for 60 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 15, 2020, 2:30 PM CDT (19:30 UTC)
Expired
May 15, 2020, 4:30 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
Chance of a watch
95%
All 60 counties

Andrews County, TX, Borden County, TX, Brewster County, TX, Brown County, TX, Callahan County, TX, Childress County, TX, Coke County, TX, Coleman County, TX, Comanche County, TX, Concho County, TX, Cottle County, TX, Crane County, TX, Crockett County, TX, Crosby County, TX, Dawson County, TX, Dickens County, TX, Eastland County, TX, Ector County, TX, Edwards County, TX, Fisher County, TX, Garza County, TX, Glasscock County, TX, Hall County, TX, Haskell County, TX, Howard County, TX, Irion County, TX, Jack County, TX, Jones County, TX, Kent County, TX, Kimble County, TX, King County, TX, Lynn County, TX, Martin County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Midland County, TX, Mills County, TX, Mitchell County, TX, Motley County, TX, Nolan County, TX, Palo Pinto County, TX, Pecos County, TX, Reagan County, TX, Runnels County, TX, San Saba County, TX, Schleicher County, TX, Scurry County, TX, Shackelford County, TX, Stephens County, TX, Sterling County, TX, Stonewall County, TX, Sutton County, TX, Taylor County, TX, Terrell County, TX, Throckmorton County, TX, Tom Green County, TX, Upton County, TX, Val Verde County, TX, Young County, TX

The radar

The San Angelo radar (KSJT), 81 km from the middle of the area, began a volume at 19:30 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

Midland Regional, TX (KMAF), launched 12:00Z, 7.5 hours before the alert went out and 109 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 12:00Z on 2020-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2781 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, Midland Regional, TX at 12:00Z on 2020-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 121 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
2781 J/kg
Mixed-layer CIN
-110 J/kg
Mixed-layer LCL
1062 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
121 m²/s²
0-3 km storm-relative helicity
151 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

IssuedProductOfficeCountiesLasted
May 15, 1:08 PM CDTMesoscale DiscussionSPCArcher, Baylor, Clay, Cooke, Fannin, Foard and 7 more2 hr
May 15, 1:39 PM CDTSevere Thunderstorm WatchSPCArcher, Baylor, Clay, Cooke, Fannin, Foard and 8 more8 hr
May 15, 2:55 PM CDTSevere Thunderstorm WatchSPCAndrews, Bandera, Borden, Brewster, Brown, Callahan and 66 more7 hr
May 15, 3:36 PM CDTMesoscale DiscussionSPCWichita84 min
May 15, 5:29 PM CDTMesoscale DiscussionSPCArcher, Baylor, Brown, Callahan, Clay, Coke and 37 more2 hr
May 15, 6:59 PM CDTMesoscale DiscussionSPCArcher, Baylor, Clay, Cooke, Grayson, Hardeman and 4 more2 hr

Nearby

Mesoscale Discussions in Texas, 2020Every mesoscale discussion in 2020

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.