Alert archive / Missouri / Mesoscale Discussions in 2015

Mesoscale Discussion 224

April 7, 201511 counties in Kansas; 12 counties in Missouri; Craig County, Nowata County, Washington County, Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Apr 7, 2015, 10:13 PM CDT for 11 counties in Kansas; 12 counties in Missouri; Craig County, Nowata County, Washington County, Oklahoma. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Apr 7, 2015, 10:13 PM CDT (03:13 UTC)
Expired: Apr 8, 2015, 12:15 AM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 26 counties

Allen County, KS, Bourbon County, KS, Chautauqua County, KS, Cherokee County, KS, Crawford County, KS, Elk County, KS, Labette County, KS, Linn County, KS, Montgomery County, KS, Neosho County, KS, Wilson County, KS, Barton County, MO, Bates County, MO, Benton County, MO, Cass County, MO, Cedar County, MO, Henry County, MO, Johnson County, MO, Lafayette County, MO, Pettis County, MO, Saline County, MO, St. Clair County, MO, Vernon County, MO, Craig County, OK, Nowata County, OK, Washington County, OK

The radar

The Pleasant Hill radar (KEAX), 88 km from the middle of the area, began a volume at 03:14 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

Topeka, KS (KFOE), launched 00:00Z, 3.2 hours before the alert went out and 139 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: 1427 J/kg
Mixed-layer CIN: -101 J/kg
Mixed-layer LCL: 1716 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 192 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 3.1

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
Apr 7, 8:24 PM CDT	Severe Thunderstorm Watch	SPC	Allen, Bourbon, Chautauqua, Cherokee, Cowley, Crawford and 7 more	5 hr
Apr 8, 6:17 AM CDT	Mesoscale Discussion	SPC	Bourbon, Linn, Miami	88 min
Apr 8, 2:21 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Bourbon, Chautauqua, Cherokee, Coffey and 12 more	114 min
Apr 8, 2:47 PM CDT	Severe Thunderstorm Watch	SPC	Allen, Anderson, Bourbon, Chautauqua, Cherokee, Coffey and 13 more	4 hr
Apr 8, 3:37 PM CDT	Tornado Watch	SPC	Allen, Barber, Butler, Chase, Chautauqua, Cowley and 16 more	8 hr
Apr 8, 5:31 PM CDT	Mesoscale Discussion	SPC	Chase, Harvey, Kingman, Marion, Pratt, Reno	59 min
Apr 8, 5:45 PM CDT	Mesoscale Discussion	SPC	Johnson, Miami	60 min
Apr 8, 6:39 AM CDT	Severe Thunderstorm Watch	SPC	Adair, Audrain, Barton, Bates, Benton, Boone and 54 more	6 hr
Apr 8, 9:33 AM CDT	Mesoscale Discussion	SPC	Adair, Audrain, Benton, Boone, Caldwell, Callaway and 45 more	57 min
Apr 8, 12:01 PM CDT	Mesoscale Discussion	SPC	Cole, Crawford, Dent, Franklin, Gasconade, Iron and 15 more	59 min
Apr 8, 12:50 PM CDT	Mesoscale Discussion	SPC	Franklin, Gasconade, Jefferson, Lincoln, Montgomery, Osage and 4 more	85 min
Apr 8, 1:05 PM CDT	Severe Thunderstorm Watch	SPC	Callaway, Crawford, Franklin, Gasconade, Jefferson, Lincoln and 10 more	5 hr
Apr 8, 2:43 PM CDT	Mesoscale Discussion	SPC	Crawford, Franklin, Gasconade, Jefferson, Lincoln, Montgomery and 9 more	92 min
Apr 8, 3:42 PM CDT	Mesoscale Discussion	SPC	Iron, Jefferson, Perry, Sainte Genevieve, Saint Francois, Washington	63 min
Apr 8, 4:07 PM CDT	Tornado Watch	SPC	Bollinger, Cape Girardeau, Iron, Jefferson, Madison, Perry and 3 more	4 hr

Nearby

Mesoscale Discussions in Missouri, 2015 Mesoscale Discussions in Kansas, 2015 Mesoscale Discussions in Oklahoma, 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.