Alert archive / Oklahoma / Mesoscale Discussions in 2016

Mesoscale Discussion 1205

July 8, 20165 counties in Arkansas; 10 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Jul 8, 2016, 9:23 AM CDT for 5 counties in Arkansas; 10 counties in Oklahoma. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued: Jul 8, 2016, 9:23 AM CDT (14:23 UTC)
Expired: Jul 8, 2016, 11:00 AM CDT
In force: 97 min
Issued by: the Storm Prediction Center
Chance of a watch: 20%

Counties Benton County, AR, Crawford County, AR, Madison County, AR, Sebastian County, AR, Washington County, AR, Adair County, OK, Cherokee County, OK, Delaware County, OK, Haskell County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Okmulgee County, OK, Sequoyah County, OK, Wagoner County, OK

The radar

The Tulsa radar (KINX), 69 km from the middle of the area, began a volume at 14:27 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

Springfield, MO (KSGF), launched 12:00Z, 2.4 hours before the alert went out and 159 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: 1814 J/kg
Mixed-layer CIN: -130 J/kg
Mixed-layer LCL: 1253 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 118 m²/s²
0-3 km storm-relative helicity: 171 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.1

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 8, 1:45 AM CDT	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Clay, Cleburne and 17 more	90 min
Jul 8, 1:59 PM CDT	Mesoscale Discussion	SPC	Baxter, Boone, Clay, Cleburne, Craighead, Fulton and 12 more	2 hr
Jul 8, 2:26 PM CDT	Severe Thunderstorm Watch	SPC	Baxter, Clay, Cleburne, Craighead, Crittenden, Cross and 15 more	5 hr
Jul 8, 4:42 PM CDT	Mesoscale Discussion	SPC	Clay, Craighead, Greene, Lawrence, Mississippi, Randolph and 1 more	63 min
Jul 8, 1:08 AM CDT	Mesoscale Discussion	SPC	Alfalfa, Dewey, Garfield, Grant, Kay, Major and 3 more	2 hr
Jul 8, 4:01 PM CDT	Mesoscale Discussion	SPC	Beckham, Caddo, Canadian, Comanche, Custer, Grady and 7 more	89 min
Jul 8, 4:55 PM CDT	Severe Thunderstorm Watch	SPC	Beckham, Blaine, Caddo, Canadian, Cleveland, Comanche and 21 more	5 hr

Nearby

Mesoscale Discussions in Oklahoma, 2016 Mesoscale Discussions in Arkansas, 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.