Alert archive / Nebraska / Mesoscale Discussions in 2005

Mesoscale Discussion 998

May 24, 200539 counties in Nebraska; 10 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at May 24, 2005, 10:00 PM CDT for 39 counties in Nebraska; 10 counties in South Dakota. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued: May 24, 2005, 10:00 PM CDT (03:00 UTC)
Expired: May 24, 2005, 11:00 PM CDT
In force: 60 min
Issued by: the Storm Prediction Center

All 49 counties

Antelope County, NE, Blaine County, NE, Boone County, NE, Boyd County, NE, Brown County, NE, Buffalo County, NE, Cedar County, NE, Chase County, NE, Custer County, NE, Dawson County, NE, Dundy County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Holt County, NE, Howard County, NE, Kearney County, NE, Keya Paha County, NE, Knox County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, Madison County, NE, Nance County, NE, Phelps County, NE, Pierce County, NE, Red Willow County, NE, Rock County, NE, Sherman County, NE, Thomas County, NE, Valley County, NE, Wheeler County, NE, Bon Homme County, SD, Charles Mix County, SD, Clay County, SD, Douglas County, SD, Gregory County, SD, Hutchinson County, SD, Lincoln County, SD, Tripp County, SD, Turner County, SD, Yankton County, SD

The radar

The North Platte radar (KLNX), 126 km from the middle of the area, began a volume at 03:00 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, 3.0 hours before the alert went out and 118 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: 1359 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 1815 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 122 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 3.5

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
May 25, 12:04 AM CDT	Mesoscale Discussion	SPC	Arthur, Blaine, Box Butte, Cherry, Custer, Dawes and 7 more	116 min

Nearby

Mesoscale Discussions in Nebraska, 2005 Mesoscale Discussions in South Dakota, 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.