Alert archive / Nebraska / Mesoscale Discussions in 2016

Mesoscale Discussion 391

April 15, 2016Cheyenne County, Colorado; 7 counties in Kansas; 12 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Apr 15, 2016, 7:20 PM MDT for Cheyenne County, Colorado; 7 counties in Kansas; 12 counties in Nebraska. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued: Apr 15, 2016, 7:20 PM MDT (01:20 UTC)
Expired: Apr 15, 2016, 8:45 PM MDT
In force: 85 min
Issued by: the Storm Prediction Center

Counties Cheyenne County, CO, Cheyenne County, KS, Logan County, KS, Rawlins County, KS, Sherman County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS, Arthur County, NE, Chase County, NE, Dundy County, NE, Frontier County, NE, Hayes County, NE, Hitchcock County, NE, Keith County, NE, Lincoln County, NE, Logan County, NE, McPherson County, NE, Perkins County, NE, Red Willow County, NE

The radar

The Goodland radar (KGLD), 61 km from the middle of the area, began a volume at 01:24 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

Denver, CO (KDEN), launched 00:00Z, 1.3 hours before the alert went out and 130 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: 874 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 75 m²/s²
0-3 km storm-relative helicity: 506 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
Apr 15, 8:07 PM MDT	Mesoscale Discussion	SPC	Grant, Morton, Stanton, Stevens	83 min
Apr 15, 8:53 PM MDT	Severe Thunderstorm Watch	SPC	Finney, Ford, Grant, Gray, Haskell, Hodgeman and 6 more	7 hr
Apr 15, 10:52 PM MDT	Mesoscale Discussion	SPC	Gray, Haskell, Meade, Morton, Seward, Stevens	113 min

Nearby

Mesoscale Discussions in Nebraska, 2016 Mesoscale Discussions in Kansas, 2016 Mesoscale Discussions in Colorado, 2016 Every mesoscale discussion in 2016

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.