Alert archive / Missouri / Mesoscale Discussions in 2022

Mesoscale Discussion 587

April 29, 20225 counties in Kansas; 21 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Apr 29, 2022, 8:05 PM CDT for 5 counties in Kansas; 21 counties in Missouri. It was in force for 55 min.

The area

The outline as issued.

The facts

Issued: Apr 29, 2022, 8:05 PM CDT (01:05 UTC)
Expired: Apr 29, 2022, 9:00 PM CDT
In force: 55 min
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch likely
Chance of a watch: 80%

All 26 counties

Doniphan County, KS, Johnson County, KS, Leavenworth County, KS, Miami County, KS, Wyandotte County, KS, Andrew County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Cass County, MO, Clay County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Livingston County, MO, Nodaway County, MO, Platte County, MO, Ray County, MO, Worth County, MO

The radar

The Pleasant Hill radar (KEAX), 70 km from the middle of the area, began a volume at 01:05 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 161Apr 29, 8:30 PM CDT

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 1.1 hours before the alert went out and 120 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: 1788 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 1073 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 225 m²/s²
0-3 km storm-relative helicity: 342 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 14.3

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
Apr 29, 7:08 PM CDT	Mesoscale Discussion	SPC	Dickinson, Geary, Marshall, Morris, Pottawatomie, Riley and 1 more	97 min
Apr 29, 8:34 PM CDT	Severe Thunderstorm Watch	SPC	Atchison, Doniphan, Johnson, Leavenworth, Linn, Miami and 1 more	4 hr
Apr 29, 8:58 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Atchison, Bourbon, Butler, Chase and 28 more	2 hr
Apr 29, 10:32 PM CDT	Severe Thunderstorm Watch	SPC	Allen, Bourbon, Chautauqua, Cherokee, Cowley, Crawford and 8 more	5 hr
Apr 30, 12:48 AM CDT	Mesoscale Discussion	SPC	Cherokee, Crawford, Labette	87 min
Apr 29, 11:34 PM CDT	Mesoscale Discussion	SPC	Caldwell, Carroll, Chariton, Daviess, Grundy, Harrison and 9 more	86 min
Apr 30, 1:09 PM CDT	Mesoscale Discussion	SPC	Bollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 23 more	2 hr
Apr 30, 2:03 PM CDT	Tornado Watch	SPC	Bollinger, Butler, Cape Girardeau, Carter, Iron, Madison and 8 more	8 hr
Apr 30, 3:52 PM CDT	Severe Thunderstorm Watch	SPC	Dunklin, Pemiscot	9 hr
Apr 30, 3:57 PM CDT	Mesoscale Discussion	SPC	Bollinger, Butler, Carter, Iron, Madison, Perry and 4 more	63 min
Apr 30, 5:27 PM CDT	Mesoscale Discussion	SPC	Bollinger, Cape Girardeau, Madison, Mississippi, Perry, Sainte Genevieve and 3 more	2 hr

Nearby

Mesoscale Discussions in Missouri, 2022 Mesoscale Discussions in Kansas, 2022 Every mesoscale discussion in 2022

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.