Alert archive / Kansas / Mesoscale Discussions in 2016

Mesoscale Discussion 598

May 11, 201635 counties in Kansas; 15 counties in Missouri; 6 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at May 11, 2016, 2:02 AM CDT for 35 counties in Kansas; 15 counties in Missouri; 6 counties in Nebraska. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued
May 11, 2016, 2:02 AM CDT (07:02 UTC)
Expired
May 11, 2016, 4:00 AM CDT
In force
118 min
Issued by
the Storm Prediction Center
Chance of a watch
40%
All 56 counties

Atchison County, KS, Brown County, KS, Clay County, KS, Cloud County, KS, Dickinson County, KS, Doniphan County, KS, Douglas County, KS, Ellsworth County, KS, Franklin County, KS, Geary County, KS, Jackson County, KS, Jefferson County, KS, Jewell County, KS, Johnson County, KS, Leavenworth County, KS, Lincoln County, KS, Linn County, KS, Lyon County, KS, Marshall County, KS, Miami County, KS, Mitchell County, KS, Morris County, KS, Nemaha County, KS, Osage County, KS, Osborne County, KS, Ottawa County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Russell County, KS, Saline County, KS, Shawnee County, KS, Wabaunsee County, KS, Washington County, KS, Wyandotte County, KS, Andrew County, MO, Atchison County, MO, Bates County, MO, Buchanan County, MO, Caldwell County, MO, Cass County, MO, Clay County, MO, Clinton County, MO, DeKalb County, MO, Holt County, MO, Jackson County, MO, Lafayette County, MO, Nodaway County, MO, Platte County, MO, Ray County, MO, Gage County, NE, Jefferson County, NE, Johnson County, NE, Nemaha County, NE, Pawnee County, NE, Richardson County, NE

The radar

The Topeka radar (KTWX), 46 km from the middle of the area, began a volume at 07:05 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

Topeka, KS (KFOE), launched 00:00Z, 7.0 hours before the alert went out and 96 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, Topeka, KS at 00:00Z on 2016-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 670 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, Topeka, KS at 00:00Z on 2016-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 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
670 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
1711 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
54 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

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.

IssuedProductOfficeCountiesLasted
May 10, 9:13 PM CDTMesoscale DiscussionSPCJewell, Phillips, Republic, Smith92 min
May 11, 3:10 AM CDTSevere Thunderstorm WatchSPCAnderson, Atchison, Brown, Chase, Clay, Cloud and 33 more5 hr
May 11, 5:34 AM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Douglas, Franklin, Jackson and 12 more101 min
May 11, 3:16 PM CDTMesoscale DiscussionSPCMorton, Stanton, Stevens119 min
May 11, 11:20 AM CDTMesoscale DiscussionSPCLincoln, Montgomery, Pike, Ralls, Saint Charles, Saint Louis and 2 more55 min
May 11, 12:10 PM CDTSevere Thunderstorm WatchSPCBollinger, Cape Girardeau, Franklin, Jefferson, Lincoln, Perry and 8 more12 hr
May 11, 2:19 PM CDTMesoscale DiscussionSPCFranklin, Jefferson, Lincoln, Saint Charles, Saint Louis, City of Saint Louis56 min
May 11, 3:07 PM CDTMesoscale DiscussionSPCAudrain, Boone, Callaway, Camden, Christian, Cole and 27 more53 min
May 11, 6:30 PM CDTSevere Thunderstorm WatchSPCBollinger, Cape Girardeau, Crawford, Franklin, Gasconade, Iron and 14 more7 hr

Nearby

Mesoscale Discussions in Kansas, 2016Mesoscale Discussions in Missouri, 2016Mesoscale Discussions in Nebraska, 2016Every mesoscale discussion in 2016

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.