Alert archive / Kansas / Mesoscale Discussions in 2018

Mesoscale Discussion 948

June 29, 201818 counties in Kansas; 8 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jun 29, 2018, 9:37 PM CDT for 18 counties in Kansas; 8 counties in Nebraska. It was in force for 113 min.

The area

The outline as issued.

The facts

Issued
Jun 29, 2018, 9:37 PM CDT (02:37 UTC)
Expired
Jun 29, 2018, 11:30 PM CDT
In force
113 min
Issued by
the Storm Prediction Center
Chance of a watch
40%
All 26 counties

Decatur County, KS, Ellis County, KS, Finney County, KS, Gove County, KS, Graham County, KS, Lane County, KS, Logan County, KS, Ness County, KS, Norton County, KS, Osborne County, KS, Phillips County, KS, Rawlins County, KS, Rooks County, KS, Scott County, KS, Sheridan County, KS, Smith County, KS, Thomas County, KS, Trego County, KS, Franklin County, NE, Furnas County, NE, Gosper County, NE, Harlan County, NE, Kearney County, NE, Phelps County, NE, Red Willow County, NE, Webster County, NE

The radar

The Goodland radar (KGLD), 123 km from the middle of the area, began a volume at 02:36 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, 2.6 hours before the alert went out and 166 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 2018-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1674 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 2018-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 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
1674 J/kg
Mixed-layer CIN
-122 J/kg
Mixed-layer LCL
2337 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
123 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Jun 30, 3:15 PM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Butler, Chase, Chautauqua and 18 more90 min
Jun 30, 3:50 PM CDTSevere Thunderstorm WatchSPCButler, Chase, Chautauqua, Cowley, Elk, Greenwood and 7 more5 hr
Jun 30, 4:40 PM CDTMesoscale DiscussionSPCAtchison, Brown, Chase, Clay, Coffey, Doniphan and 19 more95 min
Jun 30, 4:57 PM CDTSevere Thunderstorm WatchSPCAnderson, Atchison, Brown, Clay, Coffey, Dickinson and 20 more6 hr
Jun 30, 5:40 PM CDTMesoscale DiscussionSPCCheyenne, Rawlins, Sherman, Thomas2 hr
Jun 30, 6:09 PM CDTSevere Thunderstorm WatchSPCCheyenne, Decatur, Gove, Graham, Jewell, Logan and 11 more7 hr
Jun 30, 6:15 PM CDTMesoscale DiscussionSPCButler, Chautauqua, Cowley, Elk, Greenwood, Harper and 8 more90 min
Jun 30, 1:35 AM CDTMesoscale DiscussionSPCAntelope, Arthur, Banner, Blaine, Brown, Garden and 12 more85 min
Jun 30, 12:40 PM CDTMesoscale DiscussionSPCBoone, Burt, Butler, Clay, Colfax, Cuming and 19 more3 hr
Jun 30, 1:39 PM CDTSevere Thunderstorm WatchSPCBurt, Butler, Cass, Dodge, Douglas, Gage and 12 more7 hr
Jun 30, 2:03 PM CDTMesoscale DiscussionSPCArthur, Banner, Box Butte, Cheyenne, Dawes, Deuel and 7 more87 min
Jun 30, 3:03 PM CDTSevere Thunderstorm WatchSPCBanner, Box Butte, Cheyenne, Dawes, Kimball, Morrill and 2 more7 hr
Jun 30, 3:11 PM CDTMesoscale DiscussionSPCAdams, Boone, Buffalo, Chase, Clay, Custer and 29 more94 min
Jun 30, 3:26 PM CDTSevere Thunderstorm WatchSPCAdams, Arthur, Blaine, Buffalo, Chase, Cherry and 39 more8 hr
Jun 30, 3:40 PM CDTMesoscale DiscussionSPCCass, Dodge, Douglas, Lancaster, Otoe, Sarpy and 3 more2 hr
Jun 30, 6:09 PM CDTMesoscale DiscussionSPCAdams, Arthur, Blaine, Buffalo, Butler, Cass and 46 more96 min

Nearby

Mesoscale Discussions in Kansas, 2018Mesoscale Discussions in Nebraska, 2018Every mesoscale discussion in 2018

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.