Alert archive / Texas / Mesoscale Discussions in 2017

Mesoscale Discussion 1040

June 15, 2017Comanche County, Kansas; 10 counties in Oklahoma; 22 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 15, 2017, 2:03 PM CDT for Comanche County, Kansas; 10 counties in Oklahoma; 22 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jun 15, 2017, 2:03 PM CDT (19:03 UTC)
Expired
Jun 15, 2017, 4:30 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
Chance of a watch
60%
All 33 counties

Comanche County, KS, Beckham County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Roger Mills County, OK, Woods County, OK, Woodward County, OK, Armstrong County, TX, Briscoe County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Hardeman County, TX, Hemphill County, TX, Hockley County, TX, Lamb County, TX, Lipscomb County, TX, Lubbock County, TX, Lynn County, TX, Motley County, TX, Swisher County, TX, Wheeler County, TX

The radar

The Amarillo radar (KAMA), 98 km from the middle of the area, began a volume at 19:05 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, 7.1 hours before the alert went out and 97 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, Amarillo Airport, TX at 12:00Z on 2017-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 533 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 12:00Z on 2017-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -55 square meters per square second.19395878Sfc1 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
533 J/kg
Mixed-layer CIN
-325 J/kg
Mixed-layer LCL
2642 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-55 m²/s²
0-3 km storm-relative helicity
41 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

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
Jun 14, 9:54 PM CDTMesoscale DiscussionSPCAtchison, Doniphan, Douglas, Franklin, Jefferson, Johnson and 6 more96 min
Jun 15, 12:49 PM CDTMesoscale DiscussionSPCBarber, Barton, Butler, Chase, Clay, Cloud and 37 more2 hr
Jun 15, 1:24 PM CDTSevere Thunderstorm WatchSPCAnderson, Barber, Barton, Brown, Butler, Chase and 58 more6 hr
Jun 15, 3:29 PM CDTMesoscale DiscussionSPCBarber, Barton, Butler, Chase, Chautauqua, Clay and 55 more2 hr
Jun 15, 5:58 PM CDTMesoscale DiscussionSPCAllen, Anderson, Barber, Barton, Bourbon, Butler and 54 more62 min
Jun 15, 6:39 PM CDTSevere Thunderstorm WatchSPCAtchison, Doniphan6 hr
Jun 14, 7:56 PM CDTMesoscale DiscussionSPCBeckham, Greer, Harmon, Jackson, Kiowa, Tillman and 1 more94 min
Jun 15, 2:20 PM CDTSevere Thunderstorm WatchSPCBeckham, Custer, Dewey, Ellis, Greer, Harmon and 7 more7 hr
Jun 15, 5:45 PM CDTMesoscale DiscussionSPCAlfalfa, Beaver, Beckham, Custer, Dewey, Ellis and 10 more60 min
Jun 15, 2:40 PM CDTMesoscale DiscussionSPCAndrews, Crane, Crockett, Dawson, Ector, Glasscock and 11 more3 hr
Jun 15, 5:11 PM CDTSevere Thunderstorm WatchSPCAndrews, Borden, Callahan, Coke, Coleman, Concho and 25 more7 hr

Nearby

Mesoscale Discussions in Texas, 2017Mesoscale Discussions in Oklahoma, 2017Mesoscale Discussions in Kansas, 2017Every mesoscale discussion in 2017

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.