Alert archive / Nebraska / Mesoscale Discussions in 2022

Mesoscale Discussion 735

May 12, 2022Phillips County, Kansas; 33 counties in Nebraska; Bon Homme County, Charles Mix County, Yankton County, South Dakota

The Storm Prediction Center issued this mesoscale discussion at May 12, 2022, 1:39 PM CDT for Phillips County, Kansas; 33 counties in Nebraska; Bon Homme County, Charles Mix County, Yankton County, South Dakota. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
May 12, 2022, 1:39 PM CDT (18:39 UTC)
Expired
May 12, 2022, 4:15 PM CDT
In force
3 hr
Issued by
the Storm Prediction Center
Concerning
Severe potential...watch likely
Chance of a watch
80%
All 37 counties

Phillips County, KS, Adams County, NE, Antelope County, NE, Boone County, NE, Boyd County, NE, Buffalo County, NE, Cedar County, NE, Clay County, NE, Custer County, NE, Dawson 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, Kearney County, NE, Knox 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, Sherman County, NE, Valley County, NE, Webster County, NE, Wheeler County, NE, Bon Homme County, SD, Charles Mix County, SD, Yankton County, SD

The radar

The Grand Island radar (KUEX), 119 km from the middle of the area, began a volume at 18:39 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, 6.7 hours before the alert went out and 169 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 2022-05-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1646 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 2022-05-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 345 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
1646 J/kg
Mixed-layer CIN
-365 J/kg
Mixed-layer LCL
1500 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
345 m²/s²
0-3 km storm-relative helicity
332 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 11, 7:05 PM CDTMesoscale DiscussionSPCGrant, Greeley, Hamilton, Kearny, Logan, Morton and 7 more115 min
May 12, 2:14 PM CDTSevere Thunderstorm WatchSPCJewell, Mitchell, Osborne, Phillips, Rooks, Smith8 hr
May 12, 4:51 PM CDTSevere Thunderstorm WatchSPCBarton, Clay, Cloud, Ellis, Ellsworth, Lincoln and 9 more6 hr
May 12, 5:07 PM CDTMesoscale DiscussionSPCCloud, Jewell, Lincoln, Mitchell, Ottawa, Republic and 1 more53 min
May 12, 5:43 PM CDTMesoscale DiscussionSPCEllis, Gove, Graham, Lane, Ness, Norton and 4 more62 min
May 11, 11:50 PM CDTMesoscale DiscussionSPCBoyd, Keya Paha, Rock115 min
May 12, 2:42 PM CDTMesoscale DiscussionSPCAntelope, Boone, Cedar, Garfield, Greeley, Howard and 11 more2 hr
May 12, 3:27 PM CDTSevere Thunderstorm Watch PDSSPCDakota, Dixon7 hr
May 12, 4:32 PM CDTMesoscale DiscussionSPCCedar, Dixon58 min
May 12, 6:12 PM CDTMesoscale DiscussionSPCBurt, Butler, Colfax, Cuming, Dakota, Dodge and 7 more63 min
May 12, 2:00 AM CDTMesoscale DiscussionSPCAurora, Beadle, Brown, Brule, Buffalo, Campbell and 29 more3 hr
May 12, 7:38 AM CDTMesoscale DiscussionSPCGrant2 hr
May 12, 2:47 PM CDTMesoscale DiscussionSPCAurora, Beadle, Bon Homme, Brookings, Brule, Buffalo and 32 more2 hr
May 12, 3:50 PM CDTTornado WatchSPCBeadle, Brookings, Brown, Buffalo, Campbell, Clark and 21 more5 hr
May 12, 5:23 PM CDTMesoscale DiscussionSPCBeadle, Brown, Clark, Codington, Day, Deuel and 10 more2 hr

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.