Alert archive / Nebraska / Mesoscale Discussions in 2014

Mesoscale Discussion 1081

June 19, 20144 states

The Storm Prediction Center issued this mesoscale discussion at Jun 19, 2014, 1:15 AM CDT for 4 states. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued
Jun 19, 2014, 1:15 AM CDT (06:15 UTC)
Expired
Jun 19, 2014, 2:45 AM CDT
In force
90 min
Issued by
the Storm Prediction Center
All 44 counties

Lyon County, IA, Plymouth County, IA, Sioux County, IA, Woodbury County, IA, Rock County, MN, Antelope County, NE, Boone County, NE, Buffalo County, NE, Butler County, NE, Cedar County, NE, Colfax County, NE, Cuming County, NE, Custer County, NE, Dakota County, NE, Dawson County, NE, Dixon County, NE, Dodge County, NE, Garfield County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Holt County, NE, Howard County, NE, Knox County, NE, Loup County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Sherman County, NE, Stanton County, NE, Thurston County, NE, Valley County, NE, Wayne County, NE, Wheeler County, NE, York County, NE, Clay County, SD, Lincoln County, SD, Minnehaha County, SD, Turner County, SD, Union County, SD, Yankton County, SD

The radar

The Omaha radar (KOAX), 156 km from the middle of the area, began a volume at 06:18 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 6.3 hours before the alert went out and 156 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 2014-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4043 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 2014-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.1939Sfc1 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
4043 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
1524 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
78 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
Jun 18, 8:47 PM CDTMesoscale DiscussionSPCDickinson, Lyon, O'Brien, Osceola, Sioux88 min
Jun 19, 1:31 AM CDTSevere Thunderstorm WatchSPCLyon, O'Brien, Osceola, Plymouth, Sioux3 hr
Jun 19, 3:15 AM CDTMesoscale DiscussionSPCLyon, Plymouth, Sioux, Woodbury90 min
Jun 19, 1:10 PM CDTMesoscale DiscussionSPCAudubon, Buena Vista, Calhoun, Carroll, Cass, Clay and 15 more95 min
Jun 19, 2:02 PM CDTMesoscale DiscussionSPCKossuth, Winnebago, Worth88 min
Jun 19, 2:40 PM CDTMesoscale DiscussionSPCCedar, Clinton, Des Moines, Dubuque, Jackson, Jones and 4 more65 min
Jun 18, 9:42 PM CDTMesoscale DiscussionSPCBlue Earth, Brown, Chippewa, Clay, Cottonwood, Douglas and 22 more3 hr
Jun 18, 10:09 PM CDTTornado WatchSPCBig Stone, Blue Earth, Brown, Chippewa, Cottonwood, Faribault and 20 more5 hr
Jun 19, 1:32 AM CDTMesoscale DiscussionSPCBlue Earth, Brown, Carver, Chippewa, Faribault, Freeborn and 16 more58 min
Jun 18, 7:08 PM CDTMesoscale DiscussionSPCChase, Deuel, Keith, Perkins97 min
Jun 18, 9:14 PM CDTMesoscale DiscussionSPCAdams, Clay, Fillmore, Franklin, Hall, Hamilton and 6 more61 min
Jun 18, 10:28 PM CDTMesoscale DiscussionSPCBlaine, Chase, Custer, Dawson, Deuel, Frontier and 15 more62 min
Jun 18, 11:00 PM CDTSevere Thunderstorm WatchSPCAdams, Antelope, Arthur, Blaine, Boone, Boyd and 45 more6 hr
Jun 18, 7:37 PM CDTTornado WatchSPCBrown, Clark, Codington, Day, Deuel, Grant and 4 more6 hr
Jun 19, 2:37 PM CDTMesoscale DiscussionSPCButte, Corson, Dewey, Haakon, Harding, Jackson and 8 more53 min

Nearby

Mesoscale Discussions in Nebraska, 2014Mesoscale Discussions in South Dakota, 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.