Alert archive / Nebraska / Mesoscale Discussions in 2013

Mesoscale Discussion 824

May 27, 20136 counties in Colorado; 8 counties in Kansas; 13 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at May 27, 2013, 4:41 PM MDT for 6 counties in Colorado; 8 counties in Kansas; 13 counties in Nebraska. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued
May 27, 2013, 4:41 PM MDT (22:41 UTC)
Expired
May 27, 2013, 6:15 PM MDT
In force
94 min
Issued by
the Storm Prediction Center
All 27 counties

Cheyenne County, CO, Kit Carson County, CO, Logan County, CO, Phillips County, CO, Sedgwick County, CO, Yuma County, CO, Cheyenne County, KS, Greeley County, KS, Logan County, KS, Scott County, KS, Sherman County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS, Arthur County, NE, Box Butte County, NE, Chase County, NE, Cheyenne County, NE, Dawes County, NE, Deuel County, NE, Dundy County, NE, Garden County, NE, Grant County, NE, Keith County, NE, Morrill County, NE, Perkins County, NE, Sheridan County, NE

The radar

The Goodland radar (KGLD), 188 km from the middle of the area, began a volume at 22:43 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

Denver, CO (KDNR), launched 12:00Z, 10.7 hours before the alert went out and 137 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, Denver, CO at 12:00Z on 2013-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2013-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
4442 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
7 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
May 27, 1:00 PM MDTMesoscale DiscussionSPCCheyenne, Kit Carson, Logan, Morgan, Phillips, Sedgwick and 2 more60 min
May 27, 1:19 PM MDTSevere Thunderstorm WatchSPCCheyenne, Kit Carson, Logan, Phillips, Sedgwick, Washington and 1 more6 hr
May 27, 12:40 AM MDTMesoscale DiscussionSPCBrown, Doniphan95 min
May 27, 2:33 AM MDTSevere Thunderstorm WatchSPCAtchison, Brown, Doniphan, Jackson, Nemaha5 hr
May 27, 5:20 AM MDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Jackson, Nemaha85 min
May 27, 2:23 PM MDTMesoscale DiscussionSPCCloud, Decatur, Ellis, Graham, Jewell, Lincoln and 9 more67 min
May 27, 3:49 PM MDTTornado WatchSPCClay, Cloud, Decatur, Dickinson, Ellis, Ellsworth and 20 more7 hr
May 27, 4:36 PM MDTMesoscale DiscussionSPCBarber, Barton, Butler, Chase, Comanche, Cowley and 19 more84 min
May 27, 5:53 PM MDTMesoscale DiscussionSPCClay, Cloud, Decatur, Dickinson, Ellis, Geary and 17 more2 hr
May 26, 6:33 PM MDTTornado WatchSPCAntelope, Blaine, Boone, Brown, Buffalo, Custer and 18 more4 hr
May 26, 8:07 PM MDTMesoscale DiscussionSPCAntelope, Blaine, Boone, Brown, Butler, Cedar and 24 more83 min
May 26, 10:03 PM MDTSevere Thunderstorm WatchSPCAntelope, Blaine, Boone, Burt, Butler, Cass and 37 more6 hr

Nearby

Mesoscale Discussions in Nebraska, 2013Mesoscale Discussions in Kansas, 2013Mesoscale Discussions in Colorado, 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.