Alert archive / Kansas / Mesoscale Discussions in 2013

Mesoscale Discussion 827

May 27, 201323 counties in Kansas; 23 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at May 27, 2013, 6:53 PM CDT for 23 counties in Kansas; 23 counties in Nebraska. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 27, 2013, 6:53 PM CDT (23:53 UTC)
Expired
May 27, 2013, 9:00 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 46 counties

Clay County, KS, Cloud County, KS, Decatur County, KS, Dickinson County, KS, Ellis County, KS, Geary County, KS, Graham County, KS, Jewell County, KS, Lincoln County, KS, Marshall County, KS, Mitchell County, KS, Norton County, KS, Osborne County, KS, Ottawa County, KS, Phillips County, KS, Republic County, KS, Riley County, KS, Rooks County, KS, Russell County, KS, Sheridan County, KS, Smith County, KS, Trego County, KS, Washington 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, Gage County, NE, Gosper County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Jefferson County, NE, Kearney County, NE, Nuckolls County, NE, Phelps County, NE, Red Willow County, NE, Saline County, NE, Seward County, NE, Thayer County, NE, Webster County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 56 km from the middle of the area, began a volume at 23:52 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.9 hours before the alert went out and 220 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, N. Platte/Lee Bi, NE at 12:00Z on 2013-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1876 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, N. Platte/Lee Bi, NE at 12:00Z on 2013-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -30 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
1876 J/kg
Mixed-layer CIN
-186 J/kg
Mixed-layer LCL
537 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
-30 m²/s²
0-3 km storm-relative helicity
-25 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.2

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 27, 1:40 AM CDTMesoscale DiscussionSPCBrown, Doniphan95 min
May 27, 3:33 AM CDTSevere Thunderstorm WatchSPCAtchison, Brown, Doniphan, Jackson, Nemaha5 hr
May 27, 6:20 AM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Jackson, Nemaha85 min
May 27, 2:00 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Gove, Logan, Norton, Rawlins and 4 more60 min
May 27, 2:19 PM CDTSevere Thunderstorm WatchSPCCheyenne, Gove, Greeley, Logan, Rawlins, Sherman and 3 more6 hr
May 27, 3:23 PM CDTMesoscale DiscussionSPCCloud, Decatur, Ellis, Graham, Jewell, Lincoln and 9 more67 min
May 27, 4:49 PM CDTTornado WatchSPCClay, Cloud, Decatur, Dickinson, Ellis, Ellsworth and 20 more7 hr
May 27, 5:36 PM CDTMesoscale DiscussionSPCBarber, Barton, Butler, Chase, Comanche, Cowley and 19 more84 min
May 27, 5:41 PM CDTMesoscale DiscussionSPCCheyenne, Greeley, Logan, Scott, Sherman, Thomas and 2 more94 min
May 26, 7:33 PM CDTTornado WatchSPCAntelope, Blaine, Boone, Brown, Buffalo, Custer and 18 more4 hr
May 26, 9:07 PM CDTMesoscale DiscussionSPCAntelope, Blaine, Boone, Brown, Butler, Cedar and 24 more83 min
May 26, 11:03 PM CDTSevere Thunderstorm WatchSPCAntelope, Blaine, Boone, Burt, Butler, Cass and 37 more6 hr

Nearby

Mesoscale Discussions in Kansas, 2013Mesoscale Discussions in Nebraska, 2013Every mesoscale discussion in 2013

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.