Alert archive / Nebraska / Mesoscale Discussions in 2011

Mesoscale Discussion 1395

June 26, 201116 counties in Iowa; 46 counties in Nebraska; 10 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 26, 2011, 6:16 AM CDT for 16 counties in Iowa; 46 counties in Nebraska; 10 counties in South Dakota. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued
Jun 26, 2011, 6:16 AM CDT (11:16 UTC)
Expired
Jun 26, 2011, 7:15 AM CDT
In force
59 min
Issued by
the Storm Prediction Center
All 72 counties

Audubon County, IA, Cass County, IA, Cherokee County, IA, Crawford County, IA, Fremont County, IA, Harrison County, IA, Ida County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, Plymouth County, IA, Pottawattamie County, IA, Sac County, IA, Shelby County, IA, Sioux County, IA, Woodbury County, IA, Antelope County, NE, Boone County, NE, Boyd County, NE, Brown County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Cedar County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Dodge County, NE, Douglas County, NE, Fillmore County, NE, Garfield County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Holt County, NE, Howard County, NE, Keya Paha County, NE, Knox County, NE, Lancaster County, NE, Loup County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Otoe County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Rock County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Sherman County, NE, Stanton County, NE, Thurston County, NE, Valley County, NE, Washington County, NE, Wayne County, NE, Wheeler County, NE, York County, NE, Bon Homme County, SD, Charles Mix County, SD, Clay County, SD, Douglas County, SD, Gregory County, SD, Hutchinson County, SD, Lincoln County, SD, Turner County, SD, Union County, SD, Yankton County, SD

The radar

The Omaha radar (KOAX), 150 km from the middle of the area, began a volume at 11:15 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, 11.3 hours before the alert went out and 236 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 2011-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 866 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 2011-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -8 square meters per square second.19395878Sfc1 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
866 J/kg
Mixed-layer CIN
-279 J/kg
Mixed-layer LCL
2072 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
-8 m²/s²
0-3 km storm-relative helicity
85 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 26, 3:09 PM CDTMesoscale DiscussionSPCFremont, Mills, Montgomery, Page, Pottawattamie2 hr
Jun 26, 4:56 PM CDTSevere Thunderstorm WatchSPCAdair, Adams, Appanoose, Audubon, Black Hawk, Boone and 40 more7 hr
Jun 26, 6:22 PM CDTMesoscale DiscussionSPCDes Moines, Henry, Jefferson, Lee, Van Buren83 min
Jun 25, 8:14 PM CDTSevere Thunderstorm WatchSPCBrown, Cherry, Keya Paha, Rock, Sheridan6 hr
Jun 25, 11:27 PM CDTMesoscale DiscussionSPCBrown, Cherry, Keya Paha63 min
Jun 26, 6:08 AM CDTMesoscale DiscussionSPCCherry, Keya Paha97 min
Jun 26, 10:44 AM CDTMesoscale DiscussionSPCBrown, Cherry, Grant, Hooker, Keya Paha, Sheridan and 1 more2 hr
Jun 26, 1:03 PM CDTSevere Thunderstorm WatchSPCBlaine, Boyd, Brown, Cherry, Garfield, Grant and 8 more7 hr
Jun 26, 2:30 PM CDTMesoscale DiscussionSPCAntelope, Banner, Blaine, Boone, Box Butte, Boyd and 22 more2 hr
Jun 26, 12:35 PM CDTMesoscale DiscussionSPCBrown, Campbell, Corson, Dewey, Edmunds, Faulk and 10 more85 min

Nearby

Mesoscale Discussions in Nebraska, 2011Mesoscale Discussions in Iowa, 2011Mesoscale Discussions in South Dakota, 2011Every mesoscale discussion in 2011

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.