Alert archive / Kansas / Mesoscale Discussions in 2011

Mesoscale Discussion 1316

June 20, 201124 counties in Kansas; 19 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Jun 20, 2011, 10:42 AM CDT for 24 counties in Kansas; 19 counties in Oklahoma. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued
Jun 20, 2011, 10:42 AM CDT (15:42 UTC)
Expired
Jun 20, 2011, 11:45 AM CDT
In force
63 min
Issued by
the Storm Prediction Center
All 43 counties

Allen County, KS, Anderson County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Coffey County, KS, Cowley County, KS, Douglas County, KS, Elk County, KS, Franklin County, KS, Greenwood County, KS, Jefferson County, KS, Johnson County, KS, Labette County, KS, Leavenworth County, KS, Lyon County, KS, Montgomery County, KS, Morris County, KS, Neosho County, KS, Osage County, KS, Shawnee County, KS, Wabaunsee County, KS, Wilson County, KS, Woodson County, KS, Cleveland County, OK, Creek County, OK, Kay County, OK, Lincoln County, OK, Logan County, OK, McClain County, OK, Noble County, OK, Nowata County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Pottawatomie County, OK, Rogers County, OK, Seminole County, OK, Tulsa County, OK, Washington County, OK

The radar

The Wichita radar (KICT), 106 km from the middle of the area, began a volume at 15:43 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

Lamont, OK (KLMN), launched 12:00Z, 3.7 hours before the alert went out and 124 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, Lamont, OK at 12:00Z on 2011-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1719 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, Lamont, OK at 12:00Z on 2011-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 398 square meters per square second.19395878Sfc1 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
1719 J/kg
Mixed-layer CIN
-561 J/kg
Mixed-layer LCL
1347 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
398 m²/s²
0-3 km storm-relative helicity
420 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.

IssuedProductOfficeCountiesLasted
Jun 20, 8:05 AM CDTMesoscale DiscussionSPCCheyenne, Decatur, Finney, Gove, Graham, Grant and 15 more55 min
Jun 20, 8:38 AM CDTSevere Thunderstorm WatchSPCDecatur, Ellis, Finney, Gove, Graham, Grant and 25 more6 hr
Jun 20, 12:22 PM CDTMesoscale DiscussionSPCDecatur, Gove, Graham, Logan, Norton, Phillips and 6 more83 min
Jun 20, 1:00 PM CDTTornado Watch PDSSPCDecatur, Gove, Graham, Jewell, Mitchell, Norton and 5 more10 hr
Jun 20, 1:34 PM CDTMesoscale DiscussionSPCButler, Chase, Clay, Cowley, Dickinson, Ellsworth and 15 more116 min
Jun 20, 2:19 PM CDTMesoscale DiscussionSPCNorton, Phillips, Smith86 min
Jun 20, 2:52 PM CDTMesoscale DiscussionSPCDecatur, Rawlins, Thomas53 min
Jun 20, 3:08 PM CDTTornado WatchSPCAtchison, Brown, Butler, Chase, Chautauqua, Clay and 34 more7 hr
Jun 20, 3:59 PM CDTMesoscale DiscussionSPCJewell61 min
Jun 20, 6:17 PM CDTMesoscale DiscussionSPCBrown, Butler, Chase, Chautauqua, Clay, Coffey and 28 more58 min
Jun 20, 3:21 PM CDTMesoscale DiscussionSPCCanadian, Carter, Cleveland, Coal, Comanche, Cotton and 27 more84 min
Jun 20, 3:42 PM CDTSevere Thunderstorm Watch PDSSPCCaddo, Canadian, Carter, Cleveland, Comanche, Cotton and 26 more7 hr
Jun 20, 5:35 PM CDTMesoscale DiscussionSPCCaddo, Canadian, Carter, Cleveland, Comanche, Cotton and 19 more85 min

Nearby

Mesoscale Discussions in Kansas, 2011Mesoscale Discussions in Oklahoma, 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.