Alert archive / Nebraska / Mesoscale Discussions in 2013

Mesoscale Discussion 847

May 28, 20134 states

The Storm Prediction Center issued this mesoscale discussion at May 28, 2013, 6:52 PM MDT for 4 states. It was in force for 113 min.

The area

The outline as issued.

The facts

Issued
May 28, 2013, 6:52 PM MDT (00:52 UTC)
Expired
May 28, 2013, 8:45 PM MDT
In force
113 min
Issued by
the Storm Prediction Center
All 85 counties

Cheyenne County, CO, Elbert County, CO, Kit Carson County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Ellis County, KS, Gove County, KS, Graham County, KS, Greeley County, KS, Logan County, KS, Norton County, KS, Osborne County, KS, Phillips County, KS, Rawlins County, KS, Rooks County, KS, Scott County, KS, Sheridan County, KS, Sherman County, KS, Smith County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Wichita County, KS, Arthur County, NE, Banner County, NE, Blaine County, NE, Box Butte County, NE, Boyd County, NE, Brown County, NE, Buffalo County, NE, Chase County, NE, Cherry County, NE, Cheyenne County, NE, Custer County, NE, Dawes County, NE, Dawson County, NE, Deuel County, NE, Dundy County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Garden County, NE, Garfield County, NE, Gosper County, NE, Grant County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Holt County, NE, Hooker County, NE, Kearney County, NE, Keith County, NE, Keya Paha County, NE, Kimball County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Morrill County, NE, Perkins County, NE, Phelps County, NE, Red Willow County, NE, Rock County, NE, Scotts Bluff County, NE, Sheridan County, NE, Sherman County, NE, Sioux County, NE, Thomas County, NE, Valley County, NE, Bennett County, SD, Custer County, SD, Fall River County, SD, Gregory County, SD, Jackson County, SD, Mellette County, SD, Oglala Lakota County, SD, Todd County, SD, Tripp County, SD

The radar

The North Platte radar (KLNX), 131 km from the middle of the area, began a volume at 00:56 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 00:00Z, 0.9 hours before the alert went out and 99 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 00:00Z on 2013-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 591 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 00:00Z on 2013-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 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
591 J/kg
Mixed-layer CIN
-181 J/kg
Mixed-layer LCL
1648 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
99 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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 28, 6:36 PM MDTMesoscale DiscussionSPCBarber, Clark, Comanche, Edwards, Finney, Ford and 13 more114 min
May 28, 8:20 PM MDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Jackson, Jefferson, Marshall and 2 more55 min
May 29, 10:33 AM MDTMesoscale DiscussionSPCBarber, Clark, Comanche2 hr
May 29, 11:22 AM MDTTornado WatchSPCBarber, Barton, Clark, Comanche, Edwards, Ellis and 38 more11 hr
May 29, 11:52 AM MDTMesoscale DiscussionSPCCheyenne, Decatur, Graham, Norton, Phillips, Rawlins and 4 more53 min
May 29, 12:04 PM MDTTornado WatchSPCCheyenne, Decatur, Graham, Jewell, Mitchell, Norton and 8 more9 hr
May 29, 2:00 PM MDTMesoscale DiscussionSPCBarber, Barton, Clark, Comanche, Edwards, Ellis and 32 more60 min
May 29, 2:12 PM MDTMesoscale DiscussionSPCButler, Chase, Clay, Cloud, Coffey, Cowley and 24 more2 hr
May 29, 2:24 PM MDTMesoscale DiscussionSPCDecatur, Graham, Jewell, Mitchell, Norton, Osborne and 6 more66 min
May 29, 2:33 PM MDTTornado WatchSPCClay, Cloud, Dickinson, Geary, Marshall, Morris and 4 more7 hr
May 29, 5:20 PM MDTMesoscale DiscussionSPCButler, Chase, Chautauqua, Coffey, Cowley, Elk and 4 more85 min
May 28, 11:57 PM MDTSevere Thunderstorm WatchSPCBlaine, Custer, Hooker, Lincoln, Logan, Loup and 2 more3 hr
May 29, 7:54 AM MDTMesoscale DiscussionSPCAdams, Antelope, Boone, Buffalo, Burt, Butler and 42 more2 hr
May 29, 4:18 PM MDTMesoscale DiscussionSPCBurt, Cedar, Colfax, Cuming, Dakota, Dixon and 10 more87 min
May 29, 5:24 PM MDTTornado WatchSPCAntelope, Boone, Burt, Butler, Cass, Cedar and 26 more4 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.