Alert archive / Nebraska / Mesoscale Discussions in 2016

Mesoscale Discussion 1146

July 5, 20164 counties in Kansas; 5 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jul 5, 2016, 3:44 PM CDT for 4 counties in Kansas; 5 counties in Nebraska. It was in force for 61 min.

The area

The outline as issued.

The facts

Issued: Jul 5, 2016, 3:44 PM CDT (20:44 UTC)
Expired: Jul 5, 2016, 4:45 PM CDT
In force: 61 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

Counties Decatur County, KS, Norton County, KS, Phillips County, KS, Sheridan County, KS, Franklin County, NE, Furnas County, NE, Harlan County, NE, Kearney County, NE, Phelps County, NE

The radar

The Grand Island radar (KUEX), 135 km from the middle of the area, began a volume at 20:45 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 328Jul 5, 6:25 PM CDT

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 8.7 hours before the alert went out and 139 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: 715 J/kg
Mixed-layer CIN: -352 J/kg
Mixed-layer LCL: 2406 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 131 m²/s²
0-3 km storm-relative helicity: 99 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
Jul 5, 4:59 PM CDT	Mesoscale Discussion	SPC	Decatur, Graham, Jewell, Norton, Phillips, Rawlins and 1 more	3 hr
Jul 5, 6:22 PM CDT	Severe Thunderstorm Watch	SPC	Cloud, Decatur, Graham, Jewell, Mitchell, Norton and 9 more	8 hr
Jul 5, 3:29 PM CDT	Severe Thunderstorm Watch	SPC	Cedar, Dakota, Dixon, Knox	7 hr

Nearby

Mesoscale Discussions in Nebraska, 2016 Mesoscale Discussions in Kansas, 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.