Alert archive / Nebraska / Mesoscale Discussions in 2022

Mesoscale Discussion 979

May 30, 20226 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at May 30, 2022, 2:03 PM CDT for 6 counties in Nebraska. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued: May 30, 2022, 2:03 PM CDT (19:03 UTC)
Expired: May 30, 2022, 3:30 PM CDT
In force: 87 min
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch unlikely
Chance of a watch: 5%

Counties Blaine County, NE, Brown County, NE, Cherry County, NE, Keya Paha County, NE, Loup County, NE, Rock County, NE

The radar

The North Platte radar (KLNX), 51 km from the middle of the area, began a volume at 19:02 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

Aberdeen, SD (KABR), launched 12:00Z, 7.1 hours before the alert went out and 321 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 942 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -62 m²/s²
0-3 km storm-relative helicity: 104 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 29, 7:16 PM CDT	Tornado Watch	SPC	Adams, Antelope, Blaine, Boone, Boyd, Brown and 45 more	8 hr
May 29, 9:16 PM CDT	Mesoscale Discussion	SPC	Adams, Antelope, Blaine, Boone, Boyd, Brown and 43 more	89 min
May 29, 11:25 PM CDT	Mesoscale Discussion	SPC	Antelope, Boyd, Cedar, Garfield, Holt, Keya Paha and 3 more	95 min
May 30, 12:03 AM CDT	Severe Thunderstorm Watch	SPC	Dakota, Dixon	8 hr
May 30, 5:40 AM CDT	Mesoscale Discussion	SPC	Cass, Douglas, Otoe, Sarpy, Washington	95 min
May 30, 9:27 AM CDT	Mesoscale Discussion	SPC	Antelope, Blaine, Boyd, Brown, Cedar, Dixon and 9 more	93 min
May 30, 11:28 AM CDT	Mesoscale Discussion	SPC	Antelope, Boone, Cedar, Dakota, Dixon, Knox and 5 more	92 min
May 30, 11:49 AM CDT	Tornado Watch	SPC	Antelope, Boone, Burt, Cedar, Colfax, Cuming and 10 more	6 hr
May 30, 1:34 PM CDT	Mesoscale Discussion	SPC	Burt, Cedar, Cuming, Dakota, Dixon, Dodge and 3 more	86 min
May 30, 1:55 PM CDT	Mesoscale Discussion	SPC	Burt, Cass, Douglas, Johnson, Nemaha, Otoe and 4 more	2 hr
May 30, 5:23 PM CDT	Tornado Watch	SPC	Nemaha, Pawnee, Richardson	5 hr

Nearby

Mesoscale Discussions in Nebraska, 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.