Alert archive / Kansas / Mesoscale Discussions in 2019

Mesoscale Discussion 871

May 28, 20194 states

The Storm Prediction Center issued this mesoscale discussion at May 28, 2019, 9:52 PM CDT for 4 states. It was in force for 53 min.

The area

The outline as issued.

The facts

Issued: May 28, 2019, 9:52 PM CDT (02:52 UTC)
Expired: May 28, 2019, 10:45 PM CDT
In force: 53 min
Issued by: the Storm Prediction Center

All 43 counties

Fremont County, IA, Page County, IA, Ringgold County, IA, Taylor County, IA, Anderson County, KS, Atchison County, KS, Brown County, KS, Chase County, KS, Coffey County, KS, Doniphan County, KS, Douglas County, KS, Franklin County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Lyon County, KS, Miami County, KS, Nemaha County, KS, Osage County, KS, Shawnee County, KS, Wabaunsee County, KS, Wyandotte County, KS, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Caldwell 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, Livingston County, MO, Nodaway County, MO, Platte County, MO, Ray County, MO, Worth County, MO, Nemaha County, NE, Richardson County, NE

The radar

The Topeka radar (KTWX), 84 km from the middle of the area, began a volume at 02:51 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, 2.9 hours before the alert went out and 49 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: 1765 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 864 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 245 m²/s²
0-3 km storm-relative helicity: 263 m²/s²
Significant tornado parameter: 2.4
Supercell composite: 8.6

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 28, 9:36 PM CDT	Severe Thunderstorm Watch	SPC	Decatur, Ringgold, Taylor, Wayne	4 hr
May 29, 5:24 PM CDT	Mesoscale Discussion	SPC	Buena Vista, Calhoun, Cherokee, Clay, Humboldt, Ida and 3 more	2 hr
May 29, 6:17 PM CDT	Mesoscale Discussion	SPC	Benton, Black Hawk, Buchanan, Butler, Cedar, Franklin and 19 more	118 min
May 28, 8:05 PM CDT	Mesoscale Discussion	SPC	Butler, Chase, Chautauqua, Coffey, Cowley, Dickinson and 14 more	85 min
May 29, 10:04 AM CDT	Severe Thunderstorm Watch	SPC	Cherokee	7 hr
May 29, 1:07 AM CDT	Mesoscale Discussion	SPC	Taney	113 min
May 29, 6:06 AM CDT	Severe Thunderstorm Watch	SPC	Dunklin, Pemiscot	2 hr
May 29, 9:40 AM CDT	Mesoscale Discussion	SPC	Barry, Jasper, Lawrence, McDonald, Newton, Stone	65 min
May 29, 1:32 PM CDT	Mesoscale Discussion	SPC	Barry, Camden, Christian, Dallas, Douglas, Greene and 13 more	58 min
May 29, 3:48 PM CDT	Mesoscale Discussion	SPC	Bollinger, Cape Girardeau, Franklin, Gasconade, Iron, Jefferson and 14 more	87 min
May 29, 4:34 PM CDT	Severe Thunderstorm Watch	SPC	Boone, Callaway, Cole, Crawford, Franklin, Gasconade and 15 more	3 hr

Nearby

Mesoscale Discussions in Kansas, 2019 Mesoscale Discussions in Missouri, 2019 Mesoscale Discussions in Iowa, 2019 Every mesoscale discussion in 2019

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.