Alert archive / Nebraska / Mesoscale Discussions in 2005

Mesoscale Discussion 765

May 7, 2005Phillips County, Kansas; 32 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at May 7, 2005, 8:36 PM CDT for Phillips County, Kansas; 32 counties in Nebraska. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued: May 7, 2005, 8:36 PM CDT (01:36 UTC)
Expired: May 7, 2005, 10:30 PM CDT
In force: 114 min
Issued by: the Storm Prediction Center

All 33 counties

Phillips County, KS, Adams County, NE, Antelope County, NE, Boone County, NE, Buffalo County, NE, Butler County, NE, Cedar County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Dodge County, NE, Franklin County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Howard County, NE, Kearney County, NE, Knox County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Sherman County, NE, Stanton County, NE, Thurston County, NE, Wayne County, NE, Webster County, NE, Wheeler County, NE, York County, NE

The radar

The Omaha radar (KOAX), 134 km from the middle of the area, began a volume at 01:39 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

Omaha, NE (KOAX), launched 00:00Z, 1.6 hours before the alert went out and 133 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: 82 J/kg
Mixed-layer CIN: -172 J/kg
Mixed-layer LCL: 1942 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 164 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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
May 8, 2:11 PM CDT	Mesoscale Discussion	SPC	Clay, Cloud, Dickinson, Geary, Jackson, McPherson and 11 more	64 min
May 8, 2:30 PM CDT	Severe Thunderstorm Watch	SPC	Barber, Brown, Butler, Chase, Chautauqua, Clay and 32 more	7 hr
May 8, 6:02 PM CDT	Mesoscale Discussion	SPC	Butler, Chase, Cowley, Dickinson, Geary, Harvey and 8 more	118 min
May 7, 7:34 PM CDT	Mesoscale Discussion	SPC	Antelope, Boone, Burt, Butler, Cedar, Colfax and 20 more	116 min
May 7, 11:07 PM CDT	Mesoscale Discussion	SPC	Antelope, Boone, Cedar, Dixon, Greeley, Howard and 5 more	83 min
May 8, 1:10 PM CDT	Mesoscale Discussion	SPC	Cedar, Knox, Pierce	3 hr
May 8, 1:50 PM CDT	Tornado Watch	SPC	Cedar, Dakota, Dixon, Knox, Pierce	7 hr
May 8, 5:27 PM CDT	Mesoscale Discussion	SPC	Dakota, Dixon, Thurston	63 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.