Alert archive / Kansas / Mesoscale Discussions in 2011

Mesoscale Discussion 1268

June 17, 20116 states

The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2011, 6:44 PM CDT for 6 states. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued
Jun 17, 2011, 6:44 PM CDT (23:44 UTC)
Expired
Jun 17, 2011, 8:15 PM CDT
In force
91 min
Issued by
the Storm Prediction Center
All 146 counties

Adair County, IA, Adams County, IA, Audubon County, IA, Buena Vista County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Cherokee County, IA, Clay County, IA, Crawford County, IA, Dickinson County, IA, Fremont County, IA, Guthrie County, IA, Harrison County, IA, Ida County, IA, Lyon County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, O'Brien County, IA, Osceola County, IA, Page County, IA, Plymouth County, IA, Pocahontas County, IA, Pottawattamie County, IA, Sac County, IA, Shelby County, IA, Sioux County, IA, Taylor County, IA, Woodbury County, IA, Allen County, KS, Anderson County, KS, Atchison County, KS, Barton County, KS, Bourbon County, KS, Brown County, KS, Butler County, KS, Chase County, KS, Clay County, KS, Cloud County, KS, Coffey County, KS, Dickinson County, KS, Doniphan County, KS, Douglas County, KS, Ellsworth County, KS, Franklin County, KS, Geary County, KS, Greenwood County, KS, Harvey County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Kingman County, KS, Leavenworth County, KS, Lincoln County, KS, Linn County, KS, Lyon County, KS, Marion County, KS, Marshall County, KS, McPherson County, KS, Miami County, KS, Mitchell County, KS, Morris County, KS, Nemaha County, KS, Osage County, KS, Ottawa County, KS, Pottawatomie County, KS, Pratt County, KS, Reno County, KS, Republic County, KS, Rice County, KS, Riley County, KS, Saline County, KS, Sedgwick County, KS, Shawnee County, KS, Stafford County, KS, Wabaunsee County, KS, Washington County, KS, Woodson County, KS, Wyandotte County, KS, Jackson County, MN, Nobles County, MN, Rock County, MN, Andrew County, MO, Atchison County, MO, Bates County, MO, Benton County, MO, Buchanan County, MO, Caldwell County, MO, Camden County, MO, Carroll County, MO, Cass County, MO, Cedar County, MO, Clay County, MO, Clinton County, MO, Cole County, MO, Cooper County, MO, Dallas County, MO, DeKalb County, MO, Gentry County, MO, Henry County, MO, Hickory County, MO, Holt County, MO, Jackson County, MO, Johnson County, MO, Laclede County, MO, Lafayette County, MO, Miller County, MO, Moniteau County, MO, Morgan County, MO, Nodaway County, MO, Pettis County, MO, Platte County, MO, Polk County, MO, Pulaski County, MO, Ray County, MO, Saline County, MO, St. Clair County, MO, Vernon County, MO, Worth County, MO, Wright County, MO, Burt County, NE, Butler County, NE, Cass County, NE, Cuming County, NE, Dakota County, NE, Dodge County, NE, Douglas County, NE, Fillmore County, NE, Gage County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Nemaha 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, Thurston County, NE, Washington County, NE, Lincoln County, SD, Union County, SD

The radar

The Topeka radar (KTWX), 37 km from the middle of the area, began a volume at 23:59 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.

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 11.7 hours before the alert went out and 316 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-pSkew-T log-p diagram, Springfield, MO at 12:00Z on 2011-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2325 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 2011-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 297 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
2325 J/kg
Mixed-layer CIN
-169 J/kg
Mixed-layer LCL
1246 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
297 m²/s²
0-3 km storm-relative helicity
353 m²/s²
Significant tornado parameter
0.0
Supercell composite
8.1

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.

IssuedProductOfficeCountiesLasted
Jun 16, 11:03 PM CDTSevere Thunderstorm WatchSPCFremont, Harrison, Mills, Monona, Montgomery, Page and 2 more5 hr
Jun 16, 9:13 PM CDTMesoscale DiscussionSPCBarber, Barton, Cheyenne, Decatur, Edwards, Ellis and 26 more92 min
Jun 16, 11:10 PM CDTMesoscale DiscussionSPCButler, Cloud, Cowley, Elk, Ellsworth, Harvey and 13 more65 min
Jun 17, 5:59 PM CDTMesoscale DiscussionSPCCheyenne, Greeley, Logan, Rawlins, Scott, Sherman and 3 more61 min
Jun 17, 6:23 PM CDTSevere Thunderstorm WatchSPCGove, Greeley, Hamilton, Logan, Scott, Sheridan and 4 more8 hr
Jun 17, 4:51 PM CDTMesoscale DiscussionSPCBig Stone, Chippewa, Clay, Grant, Lac qui Parle, Pope and 4 more84 min
Jun 17, 5:34 PM CDTTornado WatchSPCBig Stone, Traverse, Wilkin5 hr
Jun 17, 12:10 PM CDTMesoscale DiscussionSPCCity of Saint Louis65 min
Jun 16, 8:26 PM CDTMesoscale DiscussionSPCArthur, Banner, Blaine, Boyd, Brown, Cherry and 22 more64 min

Nearby

Mesoscale Discussions in Kansas, 2011Mesoscale Discussions in Missouri, 2011Mesoscale Discussions in Iowa, 2011Every mesoscale discussion in 2011

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.