Alert archive / Arkansas / Mesoscale Discussions in 2019

Mesoscale Discussion 1213

June 23, 201913 counties in Arkansas; 13 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Jun 23, 2019, 10:05 AM CDT for 13 counties in Arkansas; 13 counties in Oklahoma. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued: Jun 23, 2019, 10:05 AM CDT (15:05 UTC)
Expired: Jun 23, 2019, 11:30 AM CDT
In force: 85 min
Issued by: the Storm Prediction Center

All 26 counties

Benton County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Johnson County, AR, Logan County, AR, Madison County, AR, Newton County, AR, Polk County, AR, Scott County, AR, Sebastian County, AR, Washington County, AR, Yell County, AR, Adair County, OK, Atoka County, OK, Choctaw County, OK, Coal County, OK, Haskell County, OK, Hughes County, OK, Latimer County, OK, LeFlore County, OK, McIntosh County, OK, Muskogee County, OK, Pittsburg County, OK, Pushmataha County, OK, Sequoyah County, OK

The radar

The Western Arkansas radar (KSRX), 41 km from the middle of the area, began a volume at 15:08 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 433Jun 23, 1:00 PM CDT

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 3.1 hours before the alert went out and 210 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: 2 J/kg
Mixed-layer CIN: -210 J/kg
Mixed-layer LCL: 612 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 188 m²/s²
0-3 km storm-relative helicity: 280 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Jun 23, 6:06 AM CDT	Mesoscale Discussion	SPC	Cleburne, Conway, Faulkner, Garland, Johnson, Logan and 11 more	84 min
Jun 23, 7:07 AM CDT	Mesoscale Discussion	SPC	Benton	83 min
Jun 23, 7:21 AM CDT	Severe Thunderstorm Watch	SPC	Benton, Washington	5 hr
Jun 23, 12:27 PM CDT	Mesoscale Discussion	SPC	Arkansas, Baxter, Calhoun, Clark, Clay, Cleburne and 50 more	2 hr
Jun 23, 1:02 PM CDT	Severe Thunderstorm Watch	SPC	Arkansas, Bradley, Calhoun, Clark, Clay, Cleburne and 52 more	7 hr
Jun 23, 3:41 PM CDT	Mesoscale Discussion	SPC	Arkansas, Calhoun, Clark, Clay, Cleveland, Craighead and 35 more	64 min
Jun 23, 4:58 PM CDT	Mesoscale Discussion	SPC	Ashley, Chicot, Columbia, Union	92 min
Jun 22, 7:46 PM CDT	Mesoscale Discussion	SPC	Alfalfa, Blaine, Dewey, Garfield, Grant, Kay and 5 more	89 min
Jun 22, 10:01 PM CDT	Mesoscale Discussion	SPC	Beaver, Cimarron, Harper, Texas	89 min
Jun 22, 11:26 PM CDT	Severe Thunderstorm Watch	SPC	Beaver, Cimarron, Texas	6 hr
Jun 23, 1:10 AM CDT	Mesoscale Discussion	SPC	Alfalfa, Beaver, Beckham, Blaine, Caddo, Canadian and 13 more	95 min
Jun 23, 1:37 AM CDT	Severe Thunderstorm Watch	SPC	Alfalfa, Beckham, Blaine, Caddo, Canadian, Cleveland and 41 more	8 hr
Jun 23, 4:14 AM CDT	Mesoscale Discussion	SPC	Alfalfa, Beckham, Blaine, Canadian, Creek, Custer and 24 more	91 min
Jun 23, 1:37 PM CDT	Mesoscale Discussion	SPC	Atoka, Bryan, Carter, Choctaw, Cleveland, Coal and 17 more	83 min
Jun 23, 2:14 PM CDT	Severe Thunderstorm Watch	SPC	Atoka, Bryan, Carter, Choctaw, Coal, Cotton and 15 more	8 hr
Jun 23, 5:52 PM CDT	Mesoscale Discussion	SPC	Beaver, Cimarron, Harper, Texas	53 min

Nearby

Mesoscale Discussions in Arkansas, 2019 Mesoscale Discussions in Oklahoma, 2019 Every mesoscale discussion in 2019

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.