Alert archive / Kansas / Mesoscale Discussions in 2015

Mesoscale Discussion 361

April 18, 201530 counties in Kansas; 14 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Apr 18, 2015, 5:31 PM CDT for 30 counties in Kansas; 14 counties in Nebraska. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued
Apr 18, 2015, 5:31 PM CDT (22:31 UTC)
Expired
Apr 18, 2015, 6:30 PM CDT
In force
59 min
Issued by
the Storm Prediction Center
All 44 counties

Barber County, KS, Barton County, KS, Clark County, KS, Comanche County, KS, Edwards County, KS, Ellis County, KS, Ellsworth County, KS, Ford County, KS, Graham County, KS, Harper County, KS, Hodgeman County, KS, Jewell County, KS, Kingman County, KS, Kiowa County, KS, Lincoln County, KS, Mitchell County, KS, Ness County, KS, Norton County, KS, Osborne County, KS, Pawnee County, KS, Phillips County, KS, Pratt County, KS, Reno County, KS, Rice County, KS, Rooks County, KS, Rush County, KS, Russell County, KS, Smith County, KS, Stafford County, KS, Trego County, KS, Adams County, NE, Buffalo County, NE, Clay County, NE, Dawson County, NE, Franklin 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, Webster County, NE

The radar

The Dodge City radar (KDDC), 117 km from the middle of the area, began a volume at 22:32 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 12:00Z, 10.5 hours before the alert went out and 112 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 12:00Z on 2015-04-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 192 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 12:00Z on 2015-04-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -48 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
192 J/kg
Mixed-layer CIN
-124 J/kg
Mixed-layer LCL
897 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
-48 m²/s²
0-3 km storm-relative helicity
9 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
Apr 17, 7:06 PM CDTMesoscale DiscussionSPCBarber, Cheyenne, Clark, Comanche, Decatur, Edwards and 28 more84 min
Apr 17, 7:26 PM CDTMesoscale DiscussionSPCGrant, Morton, Stevens2 hr
Apr 17, 8:24 PM CDTMesoscale DiscussionSPCEllsworth, Lincoln, Mitchell, Osborne, Phillips, Russell and 1 more2 hr
Apr 17, 8:56 PM CDTMesoscale DiscussionSPCCheyenne, Clark, Comanche, Decatur, Edwards, Ellis and 28 more94 min
Apr 18, 12:45 PM CDTMesoscale DiscussionSPCBarber, Harper, Kingman, Pratt60 min
Apr 18, 1:52 PM CDTMesoscale DiscussionSPCBarber, Clark, Comanche, Edwards, Ford, Kiowa and 1 more113 min
Apr 18, 2:43 PM CDTSevere Thunderstorm WatchSPCBarber, Barton, Butler, Clark, Comanche, Cowley and 27 more8 hr
Apr 18, 2:49 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Graham, Norton, Phillips, Rawlins and 3 more116 min
Apr 18, 3:08 PM CDTTornado WatchSPCCheyenne, Decatur, Gove, Graham, Greeley, Logan and 7 more6 hr
Apr 18, 4:07 PM CDTMesoscale DiscussionSPCButler, Chase, Chautauqua, Clay, Cowley, Dickinson and 9 more2 hr
Apr 18, 6:07 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Gove, Logan, Rawlins, Sheridan and 3 more53 min
Apr 17, 11:48 PM CDTMesoscale DiscussionSPCFrontier, Hayes, Lincoln57 min

Nearby

Mesoscale Discussions in Kansas, 2015Mesoscale Discussions in Nebraska, 2015Every mesoscale discussion in 2015

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.