Alert archive / Texas / Mesoscale Discussions in 2016

Mesoscale Discussion 1279

July 14, 201614 counties in Oklahoma; 19 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jul 14, 2016, 5:05 PM CDT for 14 counties in Oklahoma; 19 counties in Texas. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued: Jul 14, 2016, 5:05 PM CDT (22:05 UTC)
Expired: Jul 14, 2016, 7:00 PM CDT
In force: 115 min
Issued by: the Storm Prediction Center
Chance of a watch: 60%

All 33 counties

Beckham County, OK, Caddo County, OK, Cimarron County, OK, Comanche County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kiowa County, OK, Roger Mills County, OK, Texas County, OK, Washita County, OK, Armstrong County, TX, Carson County, TX, Collingsworth County, TX, Dallam County, TX, Donley County, TX, Gray County, TX, Hansford County, TX, Hartley County, TX, Hemphill County, TX, Hutchinson County, TX, Lipscomb County, TX, Moore County, TX, Ochiltree County, TX, Oldham County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Sherman County, TX, Wheeler County, TX

The radar

The Amarillo radar (KAMA), 90 km from the middle of the area, began a volume at 22:08 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.

Severe Thunderstorm Watch 386Jul 14, 6:25 PM CDT

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 10.1 hours before the alert went out and 89 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 786 J/kg
Mixed-layer CIN: -524 J/kg
Mixed-layer LCL: 2644 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 105 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.

Issued	Product	Office	Counties	Lasted
Jul 14, 3:10 AM CDT	Mesoscale Discussion	SPC	Latimer, LeFlore, McCurtain, Pushmataha	95 min
Jul 14, 11:21 AM CDT	Mesoscale Discussion	SPC	Adair, Cherokee, Craig, Creek, Delaware, Haskell and 13 more	114 min
Jul 14, 11:38 AM CDT	Severe Thunderstorm Watch	SPC	Adair, Cherokee, Creek, Delaware, Haskell, Latimer and 12 more	5 hr
Jul 14, 2:14 PM CDT	Mesoscale Discussion	SPC	Adair, Latimer, LeFlore, McCurtain, Pushmataha, Sequoyah	91 min
Jul 14, 3:05 PM CDT	Severe Thunderstorm Watch	SPC	McCurtain	6 hr
Jul 14, 6:25 PM CDT	Severe Thunderstorm Watch	SPC	Beckham, Caddo, Comanche, Cotton, Grady, Greer and 7 more	7 hr

Nearby

Mesoscale Discussions in Texas, 2016 Mesoscale Discussions in Oklahoma, 2016 Every 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.