Alert archive / Missouri / Mesoscale Discussions in 2025

Mesoscale Discussion 894

May 19, 2025Leavenworth County, Wyandotte County, Kansas; 28 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at May 19, 2025, 8:58 PM CDT for Leavenworth County, Wyandotte County, Kansas; 28 counties in Missouri. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: May 19, 2025, 8:58 PM CDT (01:58 UTC)
Expired: May 19, 2025, 11:00 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center
Concerning: Tornado watch 294

All 30 counties

Leavenworth County, KS, Wyandotte County, KS, Adair County, MO, Andrew County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Chariton County, MO, Clay County, MO, Clinton County, MO, Cooper County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Mercer County, MO, Pettis County, MO, Platte County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Sullivan County, MO

The radar

The Pleasant Hill radar (KEAX), 85 km from the middle of the area, began a volume at 02:00 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 (KTOP), launched 00:00Z, 2.0 hours before the alert went out and 160 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: 1171 J/kg
Mixed-layer CIN: -99 J/kg
Mixed-layer LCL: 867 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 148 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 3.3

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 19, 11:19 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Butler, Chase, Coffey, Dickinson and 17 more	2 hr
May 19, 7:36 PM CDT	Mesoscale Discussion	SPC	Audrain, Bollinger, Boone, Butler, Callaway, Camden and 39 more	2 hr
May 19, 8:26 PM CDT	Tornado Watch	SPC	Audrain, Barry, Bollinger, Boone, Butler, Callaway and 52 more	7 hr
May 19, 10:42 PM CDT	Mesoscale Discussion	SPC	Bollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 24 more	2 hr
May 20, 1:07 AM CDT	Mesoscale Discussion	SPC	Bollinger, Cape Girardeau, Mississippi, Perry, Sainte Genevieve, Scott	83 min
May 20, 12:34 PM CDT	Mesoscale Discussion	SPC	Dunklin, Pemiscot	116 min
May 20, 1:09 PM CDT	Tornado Watch	SPC	Bollinger, Butler, Cape Girardeau, Carter, Dunklin, Mississippi and 6 more	8 hr
May 20, 3:33 PM CDT	Mesoscale Discussion	SPC	Mississippi, Pemiscot	117 min

Nearby

Mesoscale Discussions in Missouri, 2025 Mesoscale Discussions in Kansas, 2025 Every mesoscale discussion in 2025

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.