Alert archive / Nebraska / Mesoscale Discussions in 2005

Mesoscale Discussion 2098

August 28, 200552 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Aug 28, 2005, 11:49 AM CDT for 52 counties in Nebraska. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued: Aug 28, 2005, 11:49 AM CDT (16:49 UTC)
Expired: Aug 28, 2005, 1:45 PM CDT
In force: 116 min
Issued by: the Storm Prediction Center

All 52 counties

Adams County, NE, Antelope County, NE, Blaine County, NE, Boone County, NE, Brown County, NE, Buffalo County, NE, Butler County, NE, Cass County, NE, Cedar County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Custer County, NE, Dodge County, NE, Fillmore County, NE, Franklin County, NE, Gage County, NE, Garfield County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Holt County, NE, Howard County, NE, Jefferson County, NE, Johnson County, NE, Kearney County, NE, Knox County, NE, Lancaster County, NE, Loup County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Richardson County, NE, Rock County, NE, Saline County, NE, Saunders 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 Omaha radar (KOAX), 110 km from the middle of the area, began a volume at 16:49 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 750Aug 28, 12:20 PM CDT

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 4.8 hours before the alert went out and 110 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: 443 J/kg
Mixed-layer CIN: -216 J/kg
Mixed-layer LCL: 1515 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 60 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
Aug 27, 10:04 PM CDT	Mesoscale Discussion	SPC	Adams, Clay, Fillmore, Franklin, Furnas, Hall and 8 more	56 min
Aug 28, 12:20 PM CDT	Severe Thunderstorm Watch	SPC	Boone, Butler, Clay, Colfax, Fillmore, Gage and 23 more	7 hr
Aug 28, 3:21 PM CDT	Mesoscale Discussion	SPC	Adams, Boone, Butler, Cass, Clay, Colfax and 29 more	84 min
Aug 28, 5:09 PM CDT	Mesoscale Discussion	SPC	Adams, Buffalo, Clay, Custer, Dawson, Fillmore and 15 more	96 min
Aug 28, 5:25 PM CDT	Severe Thunderstorm Watch	SPC	Pawnee, Richardson	3 hr

Nearby

Mesoscale Discussions in Nebraska, 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.