Alert archive / Kansas / Mesoscale Discussions in 2011

Mesoscale Discussion 1287

June 18, 201137 counties in Kansas; 17 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jun 18, 2011, 8:54 PM CDT for 37 counties in Kansas; 17 counties in Nebraska. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued
Jun 18, 2011, 8:54 PM CDT (01:54 UTC)
Expired
Jun 18, 2011, 10:00 PM CDT
In force
66 min
Issued by
the Storm Prediction Center
All 54 counties

Barber County, KS, Barton County, KS, Clark County, KS, Clay County, KS, Cloud County, KS, Comanche County, KS, Dickinson County, KS, Edwards County, KS, Ellis County, KS, Ellsworth County, KS, Ford County, KS, Graham County, KS, Gray County, KS, Harvey County, KS, Hodgeman County, KS, Jewell County, KS, Kingman County, KS, Kiowa County, KS, Lincoln County, KS, McPherson County, KS, Mitchell County, KS, Ness County, KS, Osborne County, KS, Ottawa County, KS, Pawnee County, KS, Phillips County, KS, Pratt County, KS, Reno County, KS, Republic County, KS, Rice County, KS, Rooks County, KS, Rush County, KS, Russell County, KS, Saline County, KS, Smith County, KS, Stafford County, KS, Trego County, KS, Adams County, NE, Buffalo County, NE, Clay County, NE, Dawson County, NE, Fillmore County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Gosper County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Kearney County, NE, Nuckolls County, NE, Phelps County, NE, Thayer County, NE, Webster County, NE

The radar

The Grand Island radar (KUEX), 143 km from the middle of the area, began a volume at 01:57 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

Dodge City, (KDDC), launched 00:00Z, 1.9 hours before the alert went out and 167 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 2011-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1666 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, Dodge City, at 00:00Z on 2011-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 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
1666 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
1910 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
211 m²/s²
Significant tornado parameter
0.2
Supercell composite
7.6

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 18, 7:41 PM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Chautauqua, Cherokee, Cowley and 10 more94 min
Jun 18, 9:25 PM CDTSevere Thunderstorm WatchSPCBarton, Chase, Clay, Cloud, Dickinson, Ellsworth and 21 more4 hr
Jun 18, 11:05 PM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Cherokee, Coffey, Crawford and 10 more85 min
Jun 19, 3:52 PM CDTMesoscale DiscussionSPCAtchison, Brown, Clay, Cloud, Decatur, Doniphan and 16 more113 min
Jun 19, 6:21 PM CDTMesoscale DiscussionSPCAtchison, Brown, Clay, Cloud, Dickinson, Doniphan and 22 more84 min
Jun 19, 6:51 PM CDTTornado WatchSPCAtchison, Brown, Clay, Cloud, Dickinson, Doniphan and 17 more7 hr
Jun 19, 2:09 PM CDTMesoscale DiscussionSPCArthur, Chase, Cheyenne, Deuel, Dundy, Garden and 3 more2 hr
Jun 19, 3:04 PM CDTTornado WatchSPCArthur, Banner, Chase, Cheyenne, Deuel, Dundy and 7 more7 hr
Jun 19, 5:49 PM CDTMesoscale DiscussionSPCBoyd, Holt, Knox, Rock56 min
Jun 19, 5:58 PM CDTMesoscale DiscussionSPCBuffalo, Chase, Custer, Dawson, Dundy, Frontier and 7 more92 min
Jun 19, 6:10 PM CDTTornado WatchSPCAntelope, Blaine, Boone, Boyd, Brown, Buffalo and 36 more7 hr

Nearby

Mesoscale Discussions in Kansas, 2011Mesoscale Discussions in Nebraska, 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.