Alert archive / Nebraska / Mesoscale Discussions in 2005

Mesoscale Discussion 835

May 11, 2005Brown County, Marshall County, Nemaha County, Kansas; 53 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at May 11, 2005, 11:02 PM CDT for Brown County, Marshall County, Nemaha County, Kansas; 53 counties in Nebraska. It was in force for 58 min.

The area

The outline as issued.

The facts

Issued: May 11, 2005, 11:02 PM CDT (04:02 UTC)
Expired: May 12, 2005, 12:00 AM CDT
In force: 58 min
Issued by: the Storm Prediction Center

All 56 counties

Brown County, KS, Marshall County, KS, Nemaha County, KS, Adams County, NE, Blaine County, NE, Boone County, NE, Buffalo County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Custer County, NE, Dawson County, NE, Dodge County, NE, Douglas County, NE, Fillmore County, NE, Frontier County, NE, Gage County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Hayes County, NE, Hooker County, NE, Howard County, NE, Johnson County, NE, Kearney County, NE, Lancaster County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, Madison County, NE, McPherson County, NE, Merrick County, NE, Nance County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Phelps County, NE, Platte County, NE, Polk County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Sherman County, NE, Stanton County, NE, Thomas County, NE, Valley County, NE, Washington County, NE, Wheeler County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 80 km from the middle of the area, began a volume at 04:01 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 256May 11, 11:50 PM CDT

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 4.0 hours before the alert went out and 136 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: 86 J/kg
Mixed-layer CIN: -281 J/kg
Mixed-layer LCL: 708 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 106 m²/s²
0-3 km storm-relative helicity: 316 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

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 11, 8:01 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Clark, Decatur, Finney, Ford, Gove and 24 more	59 min
May 11, 9:26 PM CDT	Mesoscale Discussion	SPC	Decatur, Ellis, Finney, Gove, Graham, Grant and 15 more	64 min
May 11, 9:50 PM CDT	Tornado Watch	SPC	Clark, Decatur, Edwards, Ellis, Finney, Ford and 28 more	7 hr
May 12, 3:44 AM CDT	Mesoscale Discussion	SPC	Clay, Cloud, Jewell, Marshall, Mitchell, Republic and 1 more	61 min
May 12, 12:40 PM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Doniphan, Jackson, Jefferson, Marshall and 3 more	95 min
May 12, 1:16 PM CDT	Mesoscale Discussion	SPC	Barber, Barton, Clark, Cloud, Comanche, Edwards and 21 more	59 min
May 12, 1:35 PM CDT	Severe Thunderstorm Watch	SPC	Barber, Barton, Clark, Clay, Cloud, Comanche and 29 more	7 hr
May 12, 1:55 PM CDT	Tornado Watch	SPC	Atchison, Brown, Doniphan, Douglas, Jackson, Jefferson and 10 more	7 hr
May 12, 3:13 PM CDT	Mesoscale Discussion	SPC	Barber, Barton, Clay, Cloud, Comanche, Dickinson and 28 more	92 min
May 12, 3:48 PM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Doniphan, Douglas, Jackson, Jefferson and 10 more	87 min
May 12, 5:18 PM CDT	Mesoscale Discussion	SPC	Barber, Butler, Cowley, Harper, Harvey, Kingman and 2 more	57 min
May 12, 5:55 PM CDT	Severe Thunderstorm Watch	SPC	Barber, Butler, Chase, Coffey, Comanche, Cowley and 14 more	7 hr
May 11, 7:02 PM CDT	Mesoscale Discussion	SPC	Adams, Arthur, Boone, Buffalo, Butler, Chase and 33 more	88 min
May 11, 11:50 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Boone, Buffalo, Butler, Cass, Clay and 30 more	5 hr

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.