Alert archive / Oklahoma / Mesoscale Discussions in 2015

Mesoscale Discussion 1282

July 2, 201524 counties in Arkansas; McDonald County, Ozark County, Taney County, Missouri; 38 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Jul 2, 2015, 2:37 PM CDT for 24 counties in Arkansas; McDonald County, Ozark County, Taney County, Missouri; 38 counties in Oklahoma. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jul 2, 2015, 2:37 PM CDT (19:37 UTC)
Expired: Jul 2, 2015, 5:00 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center
Chance of a watch: 60%

All 65 counties

Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Cleburne County, AR, Conway County, AR, Crawford County, AR, Franklin County, AR, Fulton County, AR, Independence County, AR, Izard County, AR, Johnson County, AR, Logan County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Pope County, AR, Searcy County, AR, Sebastian County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, Washington County, AR, Yell County, AR, McDonald County, MO, Ozark County, MO, Taney County, MO, Adair County, OK, Alfalfa County, OK, Blaine County, OK, Canadian County, OK, Cherokee County, OK, Cleveland County, OK, Creek County, OK, Delaware County, OK, Garfield County, OK, Grant County, OK, Haskell County, OK, Hughes County, OK, Kay County, OK, Kingfisher County, OK, Latimer County, OK, LeFlore County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Noble County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Pittsburg County, OK, Pottawatomie County, OK, Rogers County, OK, Seminole County, OK, Sequoyah County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK, Woods County, OK

The radar

The Tulsa radar (KINX), 26 km from the middle of the area, began a volume at 19:39 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 2, 3:25 PM CDT

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 7.6 hours before the alert went out and 179 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: 297 J/kg
Mixed-layer CIN: -276 J/kg
Mixed-layer LCL: 1240 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 198 m²/s²
0-3 km storm-relative helicity: 308 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 2, 11:59 AM CDT	Mesoscale Discussion	SPC	Mississippi	2 hr
Jul 2, 3:21 PM CDT	Severe Thunderstorm Watch	SPC	Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more	6 hr
Jul 2, 5:50 PM CDT	Mesoscale Discussion	SPC	Clay, Craighead, Greene, Mississippi	115 min
Jul 2, 6:04 PM CDT	Mesoscale Discussion	SPC	Baxter, Boone, Fulton, Independence, Izard, Marion and 4 more	56 min
Jul 2, 6:46 PM CDT	Mesoscale Discussion	SPC	Benton, Crawford, Sebastian, Washington	89 min
Jul 1, 7:52 PM CDT	Mesoscale Discussion	SPC	Barton, Bates, Benton, Camden, Cass, Cedar and 13 more	83 min
Jul 1, 8:16 PM CDT	Mesoscale Discussion	SPC	Bollinger, Callaway, Cape Girardeau, Cole, Crawford, Dent and 21 more	119 min
Jul 1, 11:06 PM CDT	Mesoscale Discussion	SPC	Barton, Cedar, Christian, Dade, Dallas, Dent and 9 more	54 min
Jul 2, 12:00 AM CDT	Severe Thunderstorm Watch	SPC	Barry, Barton, Cedar, Christian, Dade, Dallas and 21 more	4 hr

Nearby

Mesoscale Discussions in Oklahoma, 2015 Mesoscale Discussions in Arkansas, 2015 Mesoscale Discussions in Missouri, 2015 Every mesoscale discussion in 2015

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.