Alert archive / Nebraska / Mesoscale Discussions in 2005

Mesoscale Discussion 428

March 29, 2005Norton County, Kansas; 22 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Mar 29, 2005, 7:32 PM CST for Norton County, Kansas; 22 counties in Nebraska. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued: Mar 29, 2005, 7:32 PM CST (01:32 UTC)
Expired: Mar 29, 2005, 9:00 PM CST
In force: 88 min
Issued by: the Storm Prediction Center

All 23 counties

Norton County, KS, Antelope County, NE, Boone County, NE, Buffalo County, NE, Custer County, NE, Dawson County, NE, Frontier County, NE, Furnas County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Harlan County, NE, Howard County, NE, Kearney County, NE, Loup County, NE, Merrick County, NE, Nance County, NE, Phelps County, NE, Platte County, NE, Sherman County, NE, Valley County, NE, Wheeler County, NE

The radar

The Grand Island radar (KUEX), 114 km from the middle of the area, began a volume at 01:33 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, 1.5 hours before the alert went out and 107 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: 242 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 1769 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 255 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

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
Mar 29, 9:00 PM CST	Mesoscale Discussion	SPC	Butler, Chase, Chautauqua, Clay, Cowley, Dickinson and 11 more	90 min

Nearby

Mesoscale Discussions in Nebraska, 2005 Mesoscale Discussions in Kansas, 2005 Every mesoscale discussion in 2005

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.