Alert archive / Nebraska / Mesoscale Discussions in 2022

Mesoscale Discussion 965

May 29, 2022Smith County, Kansas; 58 counties in Nebraska; Bon Homme County, Clay County, Yankton County, South Dakota

The Storm Prediction Center issued this mesoscale discussion at May 29, 2022, 5:49 PM CDT for Smith County, Kansas; 58 counties in Nebraska; Bon Homme County, Clay County, Yankton County, South Dakota. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued
May 29, 2022, 5:49 PM CDT (22:49 UTC)
Expired
May 29, 2022, 7:15 PM CDT
In force
86 min
Issued by
the Storm Prediction Center
Concerning
Severe potential...tornado watch likely
Chance of a watch
80%
All 62 counties

Smith County, KS, Adams County, NE, Antelope County, NE, Blaine County, NE, Boone County, NE, Boyd County, NE, Brown County, NE, Buffalo County, NE, Burt County, NE, Butler County, NE, Cedar County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Custer County, NE, Dakota County, NE, Dawson County, NE, Dixon County, NE, Dodge County, NE, Douglas County, NE, Fillmore County, NE, Franklin County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Holt County, NE, Howard County, NE, Jefferson County, NE, Kearney County, NE, Keya Paha County, NE, Knox County, NE, Lancaster County, NE, Loup County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Phelps 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, Thayer County, NE, Thurston County, NE, Valley County, NE, Washington County, NE, Wayne County, NE, Webster County, NE, Wheeler County, NE, York County, NE, Bon Homme County, SD, Clay County, SD, Yankton County, SD

The radar

The Grand Island radar (KUEX), 122 km from the middle of the area, began a volume at 22:51 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.8 hours before the alert went out and 184 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 12:00Z on 2022-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1390 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 12:00Z on 2022-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -61 square meters per square second.1939587897Sfc1 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
1390 J/kg
Mixed-layer CIN
-248 J/kg
Mixed-layer LCL
1274 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
-61 m²/s²
0-3 km storm-relative helicity
77 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

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 28, 7:51 PM CDTMesoscale DiscussionSPCCherry, Keya Paha54 min
May 29, 3:18 PM CDTMesoscale DiscussionSPCArthur, Blaine, Box Butte, Brown, Chase, Cherry and 17 more117 min
May 29, 4:06 PM CDTSevere Thunderstorm WatchSPCArthur, Box Butte, Chase, Cherry, Cheyenne, Dawes and 14 more6 hr
May 29, 6:59 PM CDTMesoscale DiscussionSPCArthur, Cherry, Garden, Grant, Hayes, Hooker and 7 more61 min
May 28, 9:52 PM CDTSevere Thunderstorm WatchSPCAurora, Beadle, Brule, Buffalo, Charles Mix, Clark and 11 more5 hr
May 28, 11:21 PM CDTMesoscale DiscussionSPCAurora, Brule, Buffalo, Charles Mix, Davison, Douglas and 2 more84 min
May 29, 1:41 AM CDTMesoscale DiscussionSPCAurora, Beadle, Brown, Brule, Charles Mix, Clark and 16 more94 min
May 29, 3:02 AM CDTSevere Thunderstorm WatchSPCBon Homme, Brookings, Davison, Hanson, Hutchinson, Lake and 7 more5 hr
May 29, 4:16 AM CDTMesoscale DiscussionSPCLincoln, Minnehaha, Turner89 min

Nearby

Mesoscale Discussions in Nebraska, 2022Mesoscale Discussions in South Dakota, 2022Mesoscale Discussions in Kansas, 2022Every mesoscale discussion in 2022

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.