Alert archive / Nebraska / Mesoscale Discussions in 2022

Mesoscale Discussion 741

May 12, 20227 counties in Kansas; 23 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at May 12, 2022, 5:07 PM CDT for 7 counties in Kansas; 23 counties in Nebraska. It was in force for 53 min.

The area

The outline as issued.

The facts

Issued: May 12, 2022, 5:07 PM CDT (22:07 UTC)
Expired: May 12, 2022, 6:00 PM CDT
In force: 53 min
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 206...210

All 30 counties

Cloud County, KS, Jewell County, KS, Lincoln County, KS, Mitchell County, KS, Ottawa County, KS, Republic County, KS, Washington County, KS, Butler County, NE, Cass County, NE, Clay County, NE, Colfax County, NE, Dodge County, NE, Douglas County, NE, Fillmore County, NE, Gage County, NE, Hamilton County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Nuckolls County, NE, Otoe County, NE, Polk County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Thayer County, NE, Washington County, NE, Webster County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 69 km from the middle of the area, began a volume at 22:11 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

Omaha, NE (KOAX), launched 12:00Z, 10.1 hours before the alert went out and 172 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1555 J/kg
Mixed-layer CIN: -323 J/kg
Mixed-layer LCL: 1486 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -31 m²/s²
0-3 km storm-relative helicity: -52 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.

Issued	Product	Office	Counties	Lasted
May 11, 7:05 PM CDT	Mesoscale Discussion	SPC	Grant, Greeley, Hamilton, Kearny, Logan, Morton and 7 more	115 min
May 12, 1:39 PM CDT	Mesoscale Discussion	SPC	Phillips	3 hr
May 12, 2:14 PM CDT	Severe Thunderstorm Watch	SPC	Jewell, Mitchell, Osborne, Phillips, Rooks, Smith	8 hr
May 12, 4:51 PM CDT	Severe Thunderstorm Watch	SPC	Barton, Clay, Cloud, Ellis, Ellsworth, Lincoln and 9 more	6 hr
May 12, 5:43 PM CDT	Mesoscale Discussion	SPC	Ellis, Gove, Graham, Lane, Ness, Norton and 4 more	62 min
May 11, 11:50 PM CDT	Mesoscale Discussion	SPC	Boyd, Keya Paha, Rock	115 min
May 12, 2:42 PM CDT	Mesoscale Discussion	SPC	Antelope, Boone, Cedar, Garfield, Greeley, Howard and 11 more	2 hr
May 12, 3:27 PM CDT	Severe Thunderstorm Watch PDS	SPC	Dakota, Dixon	7 hr
May 12, 4:32 PM CDT	Mesoscale Discussion	SPC	Cedar, Dixon	58 min
May 12, 6:12 PM CDT	Mesoscale Discussion	SPC	Burt, Butler, Colfax, Cuming, Dakota, Dodge and 7 more	63 min

Nearby

Mesoscale Discussions in Nebraska, 2022 Mesoscale Discussions in Kansas, 2022 Every 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.