Alert archive / Nebraska / Mesoscale Discussions in 2020

Mesoscale Discussion 885

June 8, 20205 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jun 8, 2020, 7:16 PM CDT for 5 counties in Nebraska. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued: Jun 8, 2020, 7:16 PM CDT (00:16 UTC)
Expired: Jun 8, 2020, 8:15 PM CDT
In force: 59 min
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 272

Counties Blaine County, NE, Custer County, NE, Logan County, NE, Loup County, NE, Rock County, NE

The radar

The North Platte radar (KLNX), 62 km from the middle of the area, began a volume at 00:21 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.3 hours before the alert went out and 95 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: 1670 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 1799 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 149 m²/s²
0-3 km storm-relative helicity: 403 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 20.3

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
Jun 8, 9:01 PM CDT	Mesoscale Discussion	SPC	Arthur, Banner, Box Butte, Chase, Cheyenne, Dawes and 9 more	119 min
Jun 8, 9:13 PM CDT	Mesoscale Discussion	SPC	Blaine, Boyd, Brown, Keya Paha, Lincoln, Logan and 3 more	2 hr
Jun 9, 12:46 AM CDT	Mesoscale Discussion	SPC	Arthur, Blaine, Boyd, Brown, Chase, Cherry and 23 more	89 min
Jun 9, 2:03 PM CDT	Mesoscale Discussion	SPC	Fillmore, Jefferson, Nuckolls, Saline, Thayer	87 min
Jun 9, 2:36 PM CDT	Tornado Watch	SPC	Butler, Cass, Clay, Douglas, Fillmore, Gage and 15 more	7 hr
Jun 9, 6:43 PM CDT	Mesoscale Discussion	SPC	Cass, Gage, Jefferson, Johnson, Lancaster, Nemaha and 5 more	92 min

Nearby

Mesoscale Discussions in Nebraska, 2020 Every mesoscale discussion in 2020

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.