Alert archive / Kansas / Mesoscale Discussions in 2011

Mesoscale Discussion 808

May 18, 20115 counties in Colorado; 66 counties in Kansas

The Storm Prediction Center issued this mesoscale discussion at May 18, 2011, 9:25 PM MDT for 5 counties in Colorado; 66 counties in Kansas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 18, 2011, 9:25 PM MDT (03:25 UTC)
Expired
May 18, 2011, 11:30 PM MDT
In force
2 hr
Issued by
the Storm Prediction Center
All 71 counties

Cheyenne County, CO, Kiowa County, CO, Kit Carson County, CO, Lincoln County, CO, Prowers County, CO, Allen County, KS, Barton County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Cheyenne County, KS, Clay County, KS, Cloud County, KS, Coffey County, KS, Decatur County, KS, Dickinson County, KS, Edwards County, KS, Elk County, KS, Ellis County, KS, Ellsworth County, KS, Finney County, KS, Ford County, KS, Geary County, KS, Gove County, KS, Graham County, KS, Gray County, KS, Greeley County, KS, Greenwood County, KS, Hamilton County, KS, Harvey County, KS, Hodgeman County, KS, Kearny County, KS, Labette County, KS, Lane County, KS, Lincoln County, KS, Logan County, KS, Lyon County, KS, Marion County, KS, McPherson County, KS, Mitchell County, KS, Montgomery County, KS, Morris County, KS, Neosho County, KS, Ness County, KS, Norton County, KS, Osborne County, KS, Ottawa County, KS, Pawnee County, KS, Phillips County, KS, Pratt County, KS, Rawlins County, KS, Reno County, KS, Rice County, KS, Riley County, KS, Rooks County, KS, Rush County, KS, Russell County, KS, Saline County, KS, Scott County, KS, Sedgwick County, KS, Sheridan County, KS, Sherman County, KS, Smith County, KS, Stafford County, KS, Thomas County, KS, Trego County, KS, Wabaunsee County, KS, Wallace County, KS, Wichita County, KS, Wilson County, KS, Woodson County, KS

The radar

The Dodge City radar (KDDC), 81 km from the middle of the area, began a volume at 03:28 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

Dodge City, (KDDC), launched 00:00Z, 3.4 hours before the alert went out and 76 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, Dodge City, at 00:00Z on 2011-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Dodge City, at 00:00Z on 2011-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 262 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
979 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
262 m²/s²
0-3 km storm-relative helicity
325 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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
May 18, 6:36 PM MDTMesoscale DiscussionSPCBent, Cheyenne, Crowley, Kiowa, Kit Carson, Lincoln54 min
May 19, 1:24 PM MDTMesoscale DiscussionSPCCheyenne, Crowley, Elbert, El Paso, Kiowa, Kit Carson and 3 more66 min
May 19, 12:12 PM MDTMesoscale DiscussionSPCBarber, Barton, Butler, Comanche, Cowley, Dickinson and 26 more63 min
May 19, 12:43 PM MDTTornado WatchSPCBarber, Barton, Butler, Chase, Clark, Clay and 43 more7 hr
May 19, 2:44 PM MDTMesoscale DiscussionSPCBarber, Barton, Butler, Clark, Clay, Cloud and 40 more61 min
May 19, 4:42 PM MDTMesoscale DiscussionSPCBarber, Barton, Clark, Clay, Cloud, Comanche and 37 more2 hr
May 19, 5:38 PM MDTMesoscale DiscussionSPCMarshall, Nemaha, Washington97 min

Nearby

Mesoscale Discussions in Kansas, 2011Mesoscale Discussions in Colorado, 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.