Alert archive / South Dakota / Mesoscale Discussions in 2016

Mesoscale Discussion 585

May 10, 201623 counties in Nebraska; 4 counties in North Dakota; 36 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at May 10, 2016, 2:42 PM CDT for 23 counties in Nebraska; 4 counties in North Dakota; 36 counties in South Dakota. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued
May 10, 2016, 2:42 PM CDT (19:42 UTC)
Expired
May 10, 2016, 4:15 PM CDT
In force
93 min
Issued by
the Storm Prediction Center
Chance of a watch
20%
All 63 counties

Dickey County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Antelope County, NE, Boone County, NE, Boyd County, NE, Cedar County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Garfield County, NE, Greeley County, NE, Holt County, NE, Knox County, NE, Loup County, NE, Madison County, NE, Nance County, NE, Pierce County, NE, Platte County, NE, Rock County, NE, Stanton County, NE, Thurston County, NE, Valley County, NE, Wayne County, NE, Wheeler County, NE, Aurora County, SD, Beadle County, SD, Bon Homme County, SD, Brookings County, SD, Brown County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Clark County, SD, Clay County, SD, Codington County, SD, Davison County, SD, Day County, SD, Douglas County, SD, Edmunds County, SD, Faulk County, SD, Gregory County, SD, Hamlin County, SD, Hand County, SD, Hanson County, SD, Hutchinson County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Lincoln County, SD, Marshall County, SD, McCook County, SD, McPherson County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Sanborn County, SD, Spink County, SD, Turner County, SD, Union County, SD, Yankton County, SD

The radar

The Aberdeen radar (KABR), 141 km from the middle of the area, began a volume at 19:42 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

Aberdeen, SD (KABR), launched 12:00Z, 7.7 hours before the alert went out and 80 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, Aberdeen, SD at 12:00Z on 2016-05-10Temperature 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, Aberdeen, SD at 12:00Z on 2016-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 137 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
503 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
137 m²/s²
0-3 km storm-relative helicity
162 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
May 9, 7:33 PM CDTMesoscale DiscussionSPCButler, Cass, Dodge, Douglas, Fillmore, Gage and 13 more57 min
May 9, 10:06 PM CDTMesoscale DiscussionSPCBurt, Cuming, Dakota, Douglas, Madison, Nemaha and 6 more54 min
May 10, 3:18 PM CDTMesoscale DiscussionSPCBuffalo, Franklin, Furnas, Gosper, Harlan, Kearney and 3 more117 min
May 10, 6:14 PM CDTMesoscale DiscussionSPCAdams, Antelope, Boone, Buffalo, Butler, Clay and 26 more91 min
May 10, 6:29 PM CDTSevere Thunderstorm WatchSPCAdams, Boone, Buffalo, Butler, Clay, Colfax and 26 more6 hr

Nearby

Mesoscale Discussions in South Dakota, 2016Mesoscale Discussions in Nebraska, 2016Mesoscale Discussions in North Dakota, 2016Every mesoscale discussion in 2016

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.