Alert archive / Kansas / Mesoscale Discussions in 2013

Mesoscale Discussion 898

May 31, 201314 counties in Kansas; 6 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at May 31, 2013, 2:05 AM CDT for 14 counties in Kansas; 6 counties in Missouri. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued: May 31, 2013, 2:05 AM CDT (07:05 UTC)
Expired: May 31, 2013, 3:30 AM CDT
In force: 85 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

Counties Atchison County, KS, Dickinson County, KS, Douglas County, KS, Geary County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Morris County, KS, Osage County, KS, Pottawatomie County, KS, Shawnee County, KS, Wabaunsee County, KS, Wyandotte County, KS, Buchanan County, MO, Clay County, MO, Clinton County, MO, Jackson County, MO, Platte County, MO, Ray County, MO

The radar

The Topeka radar (KTWX), 50 km from the middle of the area, began a volume at 07:08 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 259May 31, 2:45 AM CDT

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 7.1 hours before the alert went out and 9 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: 753 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 971 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 31 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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
May 30, 9:47 PM CDT	Mesoscale Discussion	SPC	Barton, Butler, Chase, Dickinson, Ellsworth, Harvey and 10 more	58 min
May 31, 2:44 AM CDT	Severe Thunderstorm Watch	SPC	Atchison, Brown, Chase, Clay, Cloud, Dickinson and 24 more	5 hr
May 31, 4:51 AM CDT	Mesoscale Discussion	SPC	Chase, Douglas, Franklin, Geary, Jefferson, Johnson and 8 more	114 min
May 31, 1:49 PM CDT	Mesoscale Discussion	SPC	Allen, Bourbon, Cherokee, Crawford, Labette, Linn and 2 more	116 min
May 31, 2:15 PM CDT	Tornado Watch	SPC	Allen, Bourbon, Cherokee, Crawford, Labette, Linn and 3 more	8 hr
May 30, 7:04 PM CDT	Mesoscale Discussion	SPC	Perry, City of Saint Louis	56 min
May 30, 7:41 PM CDT	Mesoscale Discussion	SPC	Atchison	2 hr
May 30, 8:46 PM CDT	Tornado Watch	SPC	Dunklin, Pemiscot	7 hr
May 31, 1:57 AM CDT	Mesoscale Discussion	SPC	Butler, Carter, Oregon, Ripley	93 min
May 31, 7:03 AM CDT	Mesoscale Discussion	SPC	Cass, Cooper, Howard, Johnson, Pettis	57 min
May 31, 8:45 AM CDT	Mesoscale Discussion	SPC	Callaway, Camden, Cole, Crawford, Dent, Franklin and 18 more	90 min
May 31, 5:21 PM CDT	Mesoscale Discussion	SPC	Franklin, Lincoln, Montgomery, Pike, Saint Charles, Saint Louis and 1 more	54 min
May 31, 5:45 PM CDT	Tornado Watch	SPC	Audrain, Crawford, Franklin, Gasconade, Jefferson, Lincoln and 9 more	4 hr

Nearby

Mesoscale Discussions in Kansas, 2013 Mesoscale Discussions in Missouri, 2013 Every mesoscale discussion in 2013

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.