Alert archive / Kansas / Mesoscale Discussions in 2015

Mesoscale Discussion 975

June 11, 201524 counties in Kansas; 5 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Jun 11, 2015, 4:47 PM CDT for 24 counties in Kansas; 5 counties in Missouri. It was in force for 58 min.

The area

The outline as issued.

The facts

Issued: Jun 11, 2015, 4:47 PM CDT (21:47 UTC)
Expired: Jun 11, 2015, 5:45 PM CDT
In force: 58 min
Issued by: the Storm Prediction Center
Chance of a watch: 60%

All 29 counties

Atchison County, KS, Barber County, KS, Chase County, KS, Comanche County, KS, Doniphan County, KS, Douglas County, KS, Geary County, KS, Harvey County, KS, Jackson County, KS, Jefferson County, KS, Kingman County, KS, Kiowa County, KS, Leavenworth County, KS, Lyon County, KS, Marion County, KS, McPherson County, KS, Morris County, KS, Osage County, KS, Pratt County, KS, Reno County, KS, Sedgwick County, KS, Shawnee County, KS, Wabaunsee County, KS, Wyandotte County, KS, Andrew County, MO, Buchanan County, MO, Clay County, MO, Clinton County, MO, Platte County, MO

The radar

The Topeka radar (KTWX), 72 km from the middle of the area, began a volume at 21:50 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 287Jun 11, 5:20 PM CDT

The nearest sounding before it

Topeka, KS (KFOE), launched 12:00Z, 9.8 hours before the alert went out and 112 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: 128 J/kg
Mixed-layer CIN: -103 J/kg
Mixed-layer LCL: 907 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 116 m²/s²
0-3 km storm-relative helicity: 98 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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 11, 12:56 PM CDT	Mesoscale Discussion	SPC	Grant, Greeley, Hamilton, Haskell, Kearny, Morton and 4 more	94 min
Jun 11, 1:01 PM CDT	Mesoscale Discussion	SPC	Brown, Clay, Dickinson, Geary, Jackson, Marshall and 6 more	119 min
Jun 11, 4:51 PM CDT	Mesoscale Discussion	SPC	Clark, Finney, Ford, Grant, Gray, Haskell and 6 more	54 min
Jun 11, 5:03 PM CDT	Severe Thunderstorm Watch	SPC	Barber, Clark, Comanche, Edwards, Finney, Ford and 13 more	9 hr
Jun 11, 5:22 PM CDT	Severe Thunderstorm Watch	SPC	Anderson, Atchison, Brown, Chase, Coffey, Doniphan and 19 more	7 hr
Jun 11, 1:53 PM CDT	Tornado Watch	SPC	Adair, Andrew, Atchison, Gentry, Grundy, Harrison and 7 more	7 hr
Jun 11, 5:48 PM CDT	Mesoscale Discussion	SPC	Andrew, Atchison, Daviess, DeKalb, Gentry, Grundy and 5 more	87 min

Nearby

Mesoscale Discussions in Kansas, 2015 Mesoscale Discussions in Missouri, 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.