Alert archive / Kansas / Mesoscale Discussions in 2015

Mesoscale Discussion 891

June 4, 201519 counties in Kansas; 13 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jun 4, 2015, 8:10 PM CDT for 19 counties in Kansas; 13 counties in Nebraska. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued: Jun 4, 2015, 8:10 PM CDT (01:10 UTC)
Expired: Jun 4, 2015, 9:15 PM CDT
In force: 65 min
Issued by: the Storm Prediction Center
Chance of a watch: 20%

All 32 counties

Allen County, KS, Anderson County, KS, Chase County, KS, Clay County, KS, Cloud County, KS, Coffey County, KS, Dickinson County, KS, Douglas County, KS, Franklin County, KS, Geary County, KS, Lyon County, KS, Morris County, KS, Osage County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Shawnee County, KS, Wabaunsee County, KS, Woodson County, KS, Adams County, NE, Butler County, NE, Clay County, NE, Fillmore County, NE, Hall County, NE, Hamilton County, NE, Lancaster County, NE, Nuckolls County, NE, Polk County, NE, Saline County, NE, Seward County, NE, Webster County, NE, York County, NE

The radar

The Topeka radar (KTWX), 70 km from the middle of the area, began a volume at 01:09 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, 1.2 hours before the alert went out and 103 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: 1248 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 1469 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 112 m²/s²
0-3 km storm-relative helicity: 219 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 8.6

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
Jun 4, 7:06 PM CDT	Tornado Watch	SPC	Cheyenne, Decatur, Ellis, Gove, Graham, Logan and 10 more	5 hr
Jun 4, 11:29 PM CDT	Mesoscale Discussion	SPC	Decatur, Ellis, Gove, Graham, Norton, Osborne and 5 more	61 min
Jun 5, 1:22 AM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Bourbon, Butler, Chase, Chautauqua and 31 more	113 min
Jun 5, 1:42 AM CDT	Severe Thunderstorm Watch	SPC	Allen, Anderson, Bourbon, Butler, Chase, Chautauqua and 18 more	3 hr
Jun 5, 5:22 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Grant, Greeley, Hamilton, Kearny, Morton and 5 more	53 min
Jun 5, 5:44 PM CDT	Tornado Watch	SPC	Cheyenne, Decatur, Finney, Gove, Grant, Greeley and 14 more	7 hr
Jun 5, 6:59 PM CDT	Mesoscale Discussion	SPC	Logan, Sherman, Thomas, Wallace	61 min
Jun 4, 9:20 PM CDT	Mesoscale Discussion	SPC	Kimball	115 min
Jun 5, 1:49 PM CDT	Mesoscale Discussion	SPC	Banner, Kimball, Scotts Bluff	86 min

Nearby

Mesoscale Discussions in Kansas, 2015 Mesoscale Discussions in Nebraska, 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.