Alert archive / Texas / Mesoscale Discussions in 2016

Mesoscale Discussion 1284

July 14, 201613 counties in Oklahoma; 16 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jul 14, 2016, 10:00 PM CDT for 13 counties in Oklahoma; 16 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jul 14, 2016, 10:00 PM CDT (03:00 UTC)
Expired
Jul 15, 2016, 12:00 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 29 counties

Beckham County, OK, Caddo County, OK, Comanche County, OK, Cotton County, OK, Grady County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Jefferson County, OK, Kiowa County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Armstrong County, TX, Briscoe County, TX, Carson County, TX, Childress County, TX, Clay County, TX, Collingsworth County, TX, Cottle County, TX, Donley County, TX, Foard County, TX, Gray County, TX, Hall County, TX, Hardeman County, TX, Motley County, TX, Wheeler County, TX, Wichita County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 31 km from the middle of the area, began a volume at 03:01 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

Norman, OK (KOUN), launched 00:00Z, 3.0 hours before the alert went out and 173 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, Norman, OK at 00:00Z on 2016-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 532 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, Norman, OK at 00:00Z on 2016-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 259 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
532 J/kg
Mixed-layer CIN
-555 J/kg
Mixed-layer LCL
1128 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
259 m²/s²
0-3 km storm-relative helicity
423 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

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
Jul 14, 10:59 PM CDTMesoscale DiscussionSPCBlaine, Caddo, Canadian, Cleveland, Custer, Dewey and 12 more2 hr
Jul 15, 5:16 PM CDTMesoscale DiscussionSPCAlfalfa, Beaver, Beckham, Blaine, Custer, Dewey and 9 more119 min
Jul 15, 6:46 PM CDTSevere Thunderstorm WatchSPCAlfalfa, Beaver, Beckham, Blaine, Caddo, Comanche and 14 more6 hr
Jul 14, 8:43 PM CDTMesoscale DiscussionSPCBaylor, Brown, Callahan, Coke, Coleman, Comanche and 24 more2 hr
Jul 15, 7:38 AM CDTMesoscale DiscussionSPCCollin, Dallas, Denton, Hunt, Kaufman, Rains and 4 more2 hr
Jul 15, 3:01 PM CDTMesoscale DiscussionSPCArmstrong, Bailey, Carson, Castro, Dallam, Deaf Smith and 12 more89 min

Nearby

Mesoscale Discussions in Texas, 2016Mesoscale Discussions in Oklahoma, 2016Every mesoscale discussion in 2016

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.