Alert archive / Nebraska / Mesoscale Discussions in 2014

Mesoscale Discussion 994

June 14, 20144 states

The Storm Prediction Center issued this mesoscale discussion at Jun 14, 2014, 1:57 PM CDT for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jun 14, 2014, 1:57 PM CDT (18:57 UTC)
Expired
Jun 14, 2014, 4:00 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
Chance of a watch
80%
All 41 counties

Plymouth County, IA, Phillips County, KS, Smith County, KS, Adams County, NE, Antelope County, NE, Boone County, NE, Buffalo County, NE, Cedar County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dawson County, NE, Dixon County, NE, Franklin County, NE, Furnas County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Howard County, NE, Kearney County, NE, Knox County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Phelps County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Sherman County, NE, Stanton County, NE, Valley County, NE, Wayne County, NE, Webster County, NE, Wheeler County, NE, Clay County, SD, Union County, SD, Yankton County, SD

The radar

The Grand Island radar (KUEX), 95 km from the middle of the area, began a volume at 18:58 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 12:00Z, 7.0 hours before the alert went out and 204 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 12:00Z on 2014-06-14Temperature 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 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 12:00Z on 2014-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 215 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
1288 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
215 m²/s²
0-3 km storm-relative helicity
257 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 14, 5:10 PM CDTTornado WatchSPCCherokee, Ida, Monona, O'Brien, Plymouth, Sioux and 1 more7 hr
Jun 14, 3:06 PM CDTMesoscale DiscussionSPCCheyenne, Rawlins, Sherman, Thomas114 min
Jun 14, 6:22 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Logan, Norton, Rawlins, Sheridan and 3 more83 min
Jun 14, 6:40 PM CDTTornado WatchSPCCheyenne, Decatur, Graham, Norton, Rawlins, Sheridan and 2 more4 hr
Jun 13, 7:11 PM CDTMesoscale DiscussionSPCBanner, Box Butte, Cheyenne, Dawes, Garden, Kimball and 4 more2 hr
Jun 14, 3:29 PM CDTSevere Thunderstorm WatchSPCBanner, Cheyenne, Kimball, Morrill7 hr
Jun 13, 9:26 PM CDTMesoscale DiscussionSPCBennett, Corson, Custer, Dewey, Fall River, Haakon and 10 more94 min
Jun 14, 7:14 AM CDTMesoscale DiscussionSPCBuffalo, Haakon, Hand, Hughes, Hyde, Jackson and 7 more2 hr
Jun 14, 11:24 AM CDTMesoscale DiscussionSPCBuffalo, Hughes, Jones, Lyman, Mellette, Todd96 min

Nearby

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