Alert archive / Nebraska / Mesoscale Discussions in 2014

Mesoscale Discussion 1529

August 8, 20145 counties in Kansas; 23 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Aug 8, 2014, 11:48 PM CDT for 5 counties in Kansas; 23 counties in Nebraska. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued: Aug 8, 2014, 11:48 PM CDT (04:48 UTC)
Expired: Aug 9, 2014, 1:15 AM CDT
In force: 87 min
Issued by: the Storm Prediction Center

All 28 counties

Jewell County, KS, Norton County, KS, Phillips County, KS, Republic County, KS, Smith County, KS, Adams County, NE, Buffalo County, NE, Clay County, NE, Dawson County, NE, Fillmore County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Gosper County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Jefferson County, NE, Kearney County, NE, Merrick County, NE, Nuckolls County, NE, Phelps County, NE, Polk County, NE, Saline County, NE, Seward County, NE, Thayer County, NE, Webster County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 43 km from the middle of the area, began a volume at 04:51 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, 4.8 hours before the alert went out and 161 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: 613 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 2291 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 9, 2:46 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Decatur, Gove, Graham, Greeley, Lane and 12 more	119 min
Aug 9, 3:03 PM CDT	Severe Thunderstorm Watch	SPC	Cheyenne, Decatur, Gove, Graham, Greeley, Jewell and 13 more	9 hr
Aug 9, 5:32 PM CDT	Mesoscale Discussion	SPC	Chase, Clay, Cloud, Dickinson, Ellsworth, Geary and 8 more	88 min
Aug 9, 5:57 PM CDT	Mesoscale Discussion	SPC	Clark, Edwards, Finney, Ford, Grant, Gray and 16 more	63 min
Aug 9, 6:40 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Decatur, Graham, Jewell, Mitchell, Norton and 8 more	95 min
Aug 9, 6:52 PM CDT	Severe Thunderstorm Watch	SPC	Barton, Edwards, Ellis, Ellsworth, Finney, Ford and 22 more	6 hr
Aug 8, 7:48 PM CDT	Severe Thunderstorm Watch	SPC	Arthur, Blaine, Buffalo, Chase, Custer, Dawson and 22 more	5 hr
Aug 8, 9:26 PM CDT	Mesoscale Discussion	SPC	Antelope, Boone, Buffalo, Custer, Dawson, Frontier and 16 more	94 min
Aug 9, 5:08 PM CDT	Mesoscale Discussion	SPC	Banner, Box Butte, Cheyenne, Dawes, Garden, Morrill and 3 more	67 min

Nearby

Mesoscale Discussions in Nebraska, 2014 Mesoscale Discussions in Kansas, 2014 Every mesoscale discussion in 2014

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.