Alert archive / Kansas / Mesoscale Discussions in 2012

Mesoscale Discussion 1235

June 20, 20124 states

The Storm Prediction Center issued this mesoscale discussion at Jun 20, 2012, 3:24 PM CDT for 4 states. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued: Jun 20, 2012, 3:24 PM CDT (20:24 UTC)
Expired: Jun 20, 2012, 5:00 PM CDT
In force: 96 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

All 95 counties

Adair County, IA, Adams County, IA, Audubon County, IA, Boone County, IA, Carroll County, IA, Cass County, IA, Crawford County, IA, Dallas County, IA, Fremont County, IA, Greene County, IA, Guthrie County, IA, Harrison County, IA, Madison County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, Page County, IA, Polk County, IA, Pottawattamie County, IA, Ringgold County, IA, Shelby County, IA, Story County, IA, Taylor County, IA, Union County, IA, Warren County, IA, Barton County, KS, Brown County, KS, Clay County, KS, Cloud County, KS, Dickinson County, KS, Edwards County, KS, Ellis County, KS, Ellsworth County, KS, Finney County, KS, Ford County, KS, Geary County, KS, Graham County, KS, Gray County, KS, Hodgeman County, KS, Jewell County, KS, Kiowa County, KS, Lane County, KS, Lincoln County, KS, Marshall County, KS, McPherson County, KS, Mitchell County, KS, Nemaha County, KS, Ness County, KS, Osborne County, KS, Ottawa County, KS, Pawnee County, KS, Phillips County, KS, Pottawatomie County, KS, Reno County, KS, Republic County, KS, Rice County, KS, Riley County, KS, Rooks County, KS, Rush County, KS, Russell County, KS, Saline County, KS, Smith County, KS, Stafford County, KS, Trego County, KS, Washington County, KS, Atchison County, MO, Holt County, MO, Nodaway County, MO, Adams County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Clay County, NE, Dodge County, NE, Douglas County, NE, Fillmore County, NE, Franklin County, NE, Gage County, NE, Hamilton County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Thayer County, NE, Washington County, NE, Webster County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 121 km from the middle of the area, began a volume at 20:26 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

Omaha, NE (KOAX), launched 12:00Z, 8.4 hours before the alert went out and 142 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: 1133 J/kg
Mixed-layer CIN: -263 J/kg
Mixed-layer LCL: 898 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 379 m²/s²
0-3 km storm-relative helicity: 419 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 19, 7:01 PM CDT	Severe Thunderstorm Watch	SPC	Lyon, Osceola, Plymouth, Sioux	7 hr
Jun 20, 2:10 PM CDT	Mesoscale Discussion	SPC	Buena Vista, Butler, Cerro Gordo, Chickasaw, Clay, Dickinson and 15 more	95 min
Jun 20, 6:45 PM CDT	Mesoscale Discussion	SPC	Barber, Barton, Clark, Comanche, Edwards, Ford and 5 more	90 min
Jun 19, 8:50 PM CDT	Mesoscale Discussion	SPC	Arthur, Box Butte, Cherry, Dawes, Garden, Grant and 7 more	85 min
Jun 19, 11:59 PM CDT	Mesoscale Discussion	SPC	Box Butte, Dawes, Garden, Grant, Morrill, Sheridan	91 min
Jun 20, 12:57 AM CDT	Severe Thunderstorm Watch	SPC	Blaine, Boyd, Brown, Cherry, Garden, Grant and 7 more	3 hr
Jun 20, 4:00 AM CDT	Mesoscale Discussion	SPC	Arthur, Blaine, Boyd, Brown, Cherry, Garden and 8 more	60 min

Nearby

Mesoscale Discussions in Kansas, 2012 Mesoscale Discussions in Nebraska, 2012 Mesoscale Discussions in Iowa, 2012 Every mesoscale discussion in 2012

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.