Alert archive / Nebraska / Mesoscale Discussions in 2020

Mesoscale Discussion 1005

June 25, 2020Norton County, Kansas; 24 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jun 25, 2020, 7:45 PM CDT for Norton County, Kansas; 24 counties in Nebraska. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued: Jun 25, 2020, 7:45 PM CDT (00:45 UTC)
Expired: Jun 25, 2020, 8:45 PM CDT
In force: 60 min
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 304

All 25 counties

Norton County, KS, Blaine County, NE, Brown County, NE, Buffalo County, NE, Cherry County, NE, Custer County, NE, Dawson County, NE, Franklin County, NE, Furnas County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Harlan County, NE, Holt County, NE, Hooker County, NE, Howard County, NE, Kearney County, NE, Logan County, NE, Loup County, NE, Phelps County, NE, Rock County, NE, Sherman County, NE, Thomas County, NE, Valley County, NE, Wheeler County, NE

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.8 hours before the alert went out and 73 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: 2095 J/kg
Mixed-layer CIN: -91 J/kg
Mixed-layer LCL: 2321 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 241 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 9.7

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 26, 6:30 PM CDT	Mesoscale Discussion	SPC	Brown, Clay, Cloud, Doniphan, Geary, Jackson and 8 more	90 min
Jun 26, 1:07 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Kimball	113 min
Jun 26, 4:51 PM CDT	Mesoscale Discussion	SPC	Banner, Cheyenne, Deuel, Kimball	84 min

Nearby

Mesoscale Discussions in Nebraska, 2020 Mesoscale Discussions in Kansas, 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.