Alert archive / Oklahoma / Mesoscale Discussions in 2016

Mesoscale Discussion 716

May 24, 2016Crawford County, Franklin County, Sebastian County, Arkansas; 8 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at May 24, 2016, 8:39 PM CDT for Crawford County, Franklin County, Sebastian County, Arkansas; 8 counties in Oklahoma. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued: May 24, 2016, 8:39 PM CDT (01:39 UTC)
Expired: May 24, 2016, 10:15 PM CDT
In force: 96 min
Issued by: the Storm Prediction Center

Counties Crawford County, AR, Franklin County, AR, Sebastian County, AR, Adair County, OK, Cherokee County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, Muskogee County, OK, Pittsburg County, OK, Sequoyah County, OK

The radar

The Western Arkansas radar (KSRX), 40 km from the middle of the area, began a volume at 01:43 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, 1.7 hours before the alert went out and 198 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: 194 J/kg
Mixed-layer CIN: -332 J/kg
Mixed-layer LCL: 943 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 171 m²/s²
0-3 km storm-relative helicity: 265 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.8

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
May 25, 1:13 AM CDT	Mesoscale Discussion	SPC	Sebastian	3 hr
May 24, 8:26 PM CDT	Mesoscale Discussion	SPC	Beaver, Ellis, Harper	64 min
May 24, 9:39 PM CDT	Mesoscale Discussion	SPC	Coal, Creek, Garfield, Hughes, Kay, Lincoln and 13 more	2 hr
May 25, 2:47 PM CDT	Mesoscale Discussion	SPC	Kay	118 min
May 25, 3:44 PM CDT	Tornado Watch	SPC	Alfalfa, Garfield, Grant, Kay, Major, Noble and 2 more	9 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.