Alert archive / Nebraska / Mesoscale Discussions in 2011

Mesoscale Discussion 1035

May 30, 201130 counties in Kansas; 35 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at May 30, 2011, 8:13 PM CDT for 30 counties in Kansas; 35 counties in Nebraska. It was in force for 92 min.

The area

The outline as issued.

The facts

Issued: May 30, 2011, 8:13 PM CDT (01:13 UTC)
Expired: May 30, 2011, 9:45 PM CDT
In force: 92 min
Issued by: the Storm Prediction Center

All 65 counties

Barton County, KS, Cloud County, KS, Edwards County, KS, Ellis County, KS, Ellsworth County, KS, Ford County, KS, Graham County, KS, Hodgeman County, KS, Jewell County, KS, Kingman County, KS, Kiowa County, KS, Lincoln County, KS, Mitchell County, KS, Ness County, KS, Norton County, KS, Osborne County, KS, Ottawa County, KS, Pawnee County, KS, Phillips County, KS, Pratt County, KS, Reno County, KS, Republic County, KS, Rice County, KS, Rooks County, KS, Rush County, KS, Russell County, KS, Saline County, KS, Smith County, KS, Stafford County, KS, Trego County, KS, Adams County, NE, Antelope County, NE, Boone County, NE, Buffalo County, NE, Butler County, NE, Clay County, NE, Colfax County, NE, Fillmore County, NE, Franklin County, NE, Garfield County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Howard County, NE, Jefferson County, NE, Kearney County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Phelps County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Saline County, NE, Seward County, NE, Sherman County, NE, Stanton County, NE, Thayer County, NE, Valley County, NE, Wayne County, NE, Webster County, NE, Wheeler County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 51 km from the middle of the area, began a volume at 01:15 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 405May 30, 8:40 PM CDT

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.2 hours before the alert went out and 225 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: 634 J/kg
Mixed-layer CIN: -231 J/kg
Mixed-layer LCL: 2144 m above ground
0-6 km bulk shear: 79 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 144 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -1.1

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 30, 8:37 PM CDT	Severe Thunderstorm Watch PDS	SPC	Barber, Barton, Clay, Cloud, Comanche, Dickinson and 28 more	5 hr
May 30, 10:38 PM CDT	Mesoscale Discussion	SPC	Barber, Barton, Clay, Cloud, Comanche, Dickinson and 22 more	2 hr

Nearby

Mesoscale Discussions in Nebraska, 2011 Mesoscale Discussions in Kansas, 2011 Every mesoscale discussion in 2011

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.