Alert archive / Nebraska / Mesoscale Discussions in 2014

Mesoscale Discussion 998

June 14, 20144 states

The Storm Prediction Center issued this mesoscale discussion at Jun 14, 2014, 7:39 PM CDT for 4 states. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued
Jun 14, 2014, 7:39 PM CDT (00:39 UTC)
Expired
Jun 14, 2014, 9:15 PM CDT
In force
96 min
Issued by
the Storm Prediction Center
All 35 counties

Plymouth County, IA, Woodbury County, IA, Jewell County, KS, Republic County, KS, Smith County, KS, Adams County, NE, Burt County, NE, Butler County, NE, Cedar County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Dodge County, NE, Fillmore County, NE, Franklin County, NE, Hall County, NE, Hamilton County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Platte County, NE, Polk County, NE, Saline County, NE, Seward County, NE, Stanton County, NE, Thayer County, NE, Thurston County, NE, Wayne County, NE, Webster County, NE, York County, NE, Clay County, SD, Union County, SD

The radar

The Grand Island radar (KUEX), 88 km from the middle of the area, began a volume at 00:41 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

Omaha, NE (KOAX), launched 00:00Z, 0.7 hours before the alert went out and 131 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, Omaha, NE at 00:00Z on 2014-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2298 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, Omaha, NE at 00:00Z on 2014-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 134 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
2298 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
1112 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
134 m²/s²
0-3 km storm-relative helicity
352 m²/s²
Significant tornado parameter
3.3
Supercell composite
23.5

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
Jun 14, 9:39 PM CDTMesoscale DiscussionSPCPlymouth96 min
Jun 14, 11:22 PM CDTMesoscale DiscussionSPCHarrison, Monona, Woodbury53 min
Jun 14, 11:46 PM CDTSevere Thunderstorm WatchSPCAdair, Adams, Audubon, Buena Vista, Calhoun, Carroll and 19 more5 hr
Jun 15, 1:10 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Carroll, Cass, Crawford and 11 more95 min
Jun 15, 3:00 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Calhoun, Carroll and 25 more90 min
Jun 14, 7:55 PM CDTMesoscale DiscussionSPCClark, Comanche, Edwards, Ellis, Finney, Ford and 13 more95 min
Jun 14, 8:21 PM CDTMesoscale DiscussionSPCDecatur, Norton, Rawlins, Sheridan, Sherman, Thomas84 min
Jun 14, 8:51 PM CDTSevere Thunderstorm WatchSPCBarber, Barton, Clark, Comanche, Edwards, Ellis and 25 more6 hr
Jun 14, 10:56 PM CDTMesoscale DiscussionSPCButler, Chase, Cowley, Ellsworth, Harper, Harvey and 8 more94 min
Jun 14, 11:32 PM CDTSevere Thunderstorm WatchSPCButler, Chase, Chautauqua, Cowley, Elk, Ellsworth and 12 more5 hr
Jun 15, 12:37 AM CDTMesoscale DiscussionSPCBarber, Butler, Clark, Comanche, Cowley, Harper and 8 more83 min
Jun 15, 1:50 AM CDTSevere Thunderstorm WatchSPCAnderson, Atchison, Coffey, Doniphan, Douglas, Franklin and 7 more4 hr
Jun 15, 2:42 AM CDTMesoscale DiscussionSPCAllen, Butler, Chautauqua, Cherokee, Cowley, Crawford and 8 more93 min
Jun 15, 4:42 AM CDTMesoscale DiscussionSPCCherokee, Crawford, Labette93 min

Nearby

Mesoscale Discussions in Nebraska, 2014Mesoscale Discussions in Kansas, 2014Mesoscale Discussions in Iowa, 2014Every mesoscale discussion in 2014

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.