Alert archive / Oklahoma / Mesoscale Discussions in 2015

Mesoscale Discussion 733

May 23, 20154 states

The Storm Prediction Center issued this mesoscale discussion at May 23, 2015, 10:49 PM CDT for 4 states. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued: May 23, 2015, 10:49 PM CDT (03:49 UTC)
Expired: May 24, 2015, 12:15 AM CDT
In force: 86 min
Issued by: the Storm Prediction Center

All 26 counties

Benton County, AR, Crawford County, AR, Franklin County, AR, Scott County, AR, Sebastian County, AR, Washington County, AR, Cherokee County, KS, McDonald County, MO, Newton County, MO, Adair County, OK, Cherokee County, OK, Choctaw County, OK, Craig County, OK, Delaware County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Okmulgee County, OK, Ottawa County, OK, Pittsburg County, OK, Pushmataha County, OK, Sequoyah County, OK, Wagoner County, OK

The radar

The Tulsa radar (KINX), 67 km from the middle of the area, began a volume at 03:51 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 00:00Z, 3.8 hours before the alert went out and 178 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: 34 J/kg
Mixed-layer CIN: -173 J/kg
Mixed-layer LCL: 919 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 150 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

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
May 24, 12:05 PM CDT	Mesoscale Discussion	SPC	Calhoun, Clark, Columbia, Dallas, Garland, Grant and 18 more	115 min
May 24, 12:34 PM CDT	Tornado Watch	SPC	Arkansas, Baxter, Boone, Bradley, Calhoun, Carroll and 52 more	6 hr
May 24, 1:49 PM CDT	Tornado Watch	SPC	Ashley, Chicot	8 hr
May 24, 3:31 PM CDT	Mesoscale Discussion	SPC	Ashley, Baxter, Boone, Bradley, Calhoun, Clark and 31 more	89 min
May 24, 4:14 PM CDT	Tornado Watch	SPC	Clay, Craighead, Crittenden, Cross, Greene, Lawrence and 6 more	8 hr
May 24, 6:04 PM CDT	Mesoscale Discussion	SPC	Clay, Craighead, Crittenden, Cross, Greene, Lee and 4 more	116 min
May 24, 5:00 PM CDT	Tornado Watch	SPC	Cheyenne, Clark, Comanche, Edwards, Finney, Ford and 23 more	10 hr
May 24, 12:54 PM CDT	Mesoscale Discussion	SPC	Audrain, Benton, Boone, Callaway, Camden, Chariton and 34 more	96 min
May 24, 1:18 PM CDT	Tornado Watch	SPC	Adair, Audrain, Benton, Boone, Callaway, Camden and 56 more	6 hr
May 24, 3:34 PM CDT	Mesoscale Discussion	SPC	Clark, Scotland	56 min
May 24, 5:34 PM CDT	Tornado Watch	SPC	Clark	7 hr
May 23, 8:57 PM CDT	Mesoscale Discussion	SPC	Adair, Atoka, Bryan, Carter, Cherokee, Choctaw and 38 more	93 min
May 24, 3:16 AM CDT	Mesoscale Discussion	SPC	Bryan, Choctaw, LeFlore, Pushmataha	59 min

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.