Alert archive / Nebraska / Mesoscale Discussions in 2017

Mesoscale Discussion 1061

June 16, 20174 states

The Storm Prediction Center issued this mesoscale discussion at Jun 16, 2017, 6:16 PM CDT for 4 states. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued
Jun 16, 2017, 6:16 PM CDT (23:16 UTC)
Expired
Jun 16, 2017, 8:15 PM CDT
In force
119 min
Issued by
the Storm Prediction Center
All 64 counties

Adams County, IA, Cass County, IA, Fremont County, IA, Harrison County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Shelby County, IA, Taylor County, IA, Atchison County, KS, Brown County, KS, Doniphan County, KS, Jackson County, KS, Marshall County, KS, Nemaha County, KS, Washington County, KS, Andrew County, MO, Atchison County, MO, Buchanan County, MO, DeKalb County, MO, Gentry County, MO, Holt County, MO, Nodaway County, MO, Worth County, MO, Boone County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Dodge County, NE, Douglas County, NE, Fillmore County, NE, Gage County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Howard County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Platte County, NE, Polk County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Stanton County, NE, Thayer County, NE, Thurston County, NE, Washington County, NE, Wayne County, NE, York County, NE

The radar

The Omaha radar (KOAX), 65 km from the middle of the area, began a volume at 23:15 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 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, 11.3 hours before the alert went out and 64 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 2017-06-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 139 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 12:00Z on 2017-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 277 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
139 J/kg
Mixed-layer CIN
-389 J/kg
Mixed-layer LCL
1600 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
277 m²/s²
0-3 km storm-relative helicity
293 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 15, 9:33 PM CDTMesoscale DiscussionSPCAdair, Adams, Benton, Black Hawk, Buchanan, Cedar and 32 more57 min
Jun 16, 3:29 PM CDTMesoscale DiscussionSPCAllamakee, Bremer, Buena Vista, Butler, Cerro Gordo, Cherokee and 21 more91 min
Jun 16, 3:30 PM CDTSevere Thunderstorm WatchSPCFremont, Harrison, Mills, Monona, Montgomery, Page and 2 more8 hr
Jun 16, 3:53 PM CDTSevere Thunderstorm WatchSPCAllamakee, Black Hawk, Bremer, Buena Vista, Butler, Calhoun and 33 more7 hr
Jun 16, 6:56 PM CDTMesoscale DiscussionSPCAllamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 31 more64 min
Jun 15, 7:07 PM CDTSevere Thunderstorm WatchSPCAllen, Anderson, Barber, Bourbon, Brown, Butler and 45 more6 hr
Jun 16, 1:41 PM CDTMesoscale DiscussionSPCJewell, Marshall, Republic, Washington94 min
Jun 16, 12:45 PM CDTMesoscale DiscussionSPCBollinger, Cape Girardeau, Madison, Mississippi, New Madrid, Pemiscot and 5 more3 hr

Nearby

Mesoscale Discussions in Nebraska, 2017Mesoscale Discussions in Iowa, 2017Mesoscale Discussions in Missouri, 2017Every mesoscale discussion in 2017

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.