Alert archive / Nebraska / Mesoscale Discussions in 2006

Mesoscale Discussion 995

May 26, 20064 states

The Storm Prediction Center issued this mesoscale discussion at May 26, 2006, 7:55 PM MDT for 4 states. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued: May 26, 2006, 7:55 PM MDT (01:55 UTC)
Expired: May 26, 2006, 9:30 PM MDT
In force: 95 min
Issued by: the Storm Prediction Center

All 83 counties

Phillips County, CO, Sedgwick County, CO, Fremont County, IA, Mills County, IA, Brown County, KS, Clay County, KS, Cloud County, KS, Decatur County, KS, Gove County, KS, Graham County, KS, Jewell County, KS, Marshall County, KS, Mitchell County, KS, Nemaha County, KS, Norton County, KS, Osborne County, KS, Ottawa County, KS, Phillips County, KS, Pottawatomie County, KS, Rawlins County, KS, Republic County, KS, Riley County, KS, Rooks County, KS, Sheridan County, KS, Smith County, KS, Thomas County, KS, Trego County, KS, Washington County, KS, Adams County, NE, Arthur County, NE, Box Butte County, NE, Buffalo County, NE, Butler County, NE, Cass County, NE, Chase County, NE, Cheyenne County, NE, Clay County, NE, Custer County, NE, Dawson County, NE, Deuel County, NE, Douglas County, NE, Dundy County, NE, Fillmore County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Gage County, NE, Garden County, NE, Gosper County, NE, Grant County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Howard County, NE, Jefferson County, NE, Johnson County, NE, Kearney County, NE, Keith County, NE, Lancaster County, NE, Lincoln County, NE, McPherson County, NE, Merrick County, NE, Morrill County, NE, Nance County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Perkins County, NE, Phelps County, NE, Polk County, NE, Red Willow County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Sherman County, NE, Thayer County, NE, Webster County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 84 km from the middle of the area, began a volume at 01:55 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 410May 26, 8:20 PM MDT

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.9 hours before the alert went out and 120 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: 2205 J/kg
Mixed-layer CIN: -109 J/kg
Mixed-layer LCL: 1883 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 109 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

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 26, 10:55 PM MDT	Mesoscale Discussion	SPC	Fremont, Mills, Page	95 min
May 27, 2:30 AM MDT	Mesoscale Discussion	SPC	Appanoose, Boone, Clarke, Dallas, Davis, Decatur and 19 more	3 hr
May 27, 1:12 PM MDT	Mesoscale Discussion	SPC	Allamakee, Cedar, Clinton, Des Moines, Dubuque, Henry and 10 more	93 min
May 27, 1:45 PM MDT	Severe Thunderstorm Watch	SPC	Clinton, Des Moines, Henry, Jackson, Lee, Louisa and 3 more	5 hr
May 26, 8:19 PM MDT	Severe Thunderstorm Watch	SPC	Brown, Clay, Cloud, Jackson, Marshall, Nemaha and 5 more	5 hr
May 27, 4:15 PM MDT	Mesoscale Discussion	SPC	Clark, Comanche, Edwards, Ford, Kiowa	2 hr

Nearby

Mesoscale Discussions in Nebraska, 2006 Mesoscale Discussions in Kansas, 2006 Mesoscale Discussions in Colorado, 2006 Every mesoscale discussion in 2006

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.