Alert archive / Nebraska / Mesoscale Discussions in 2008

Mesoscale Discussion 1085

May 29, 20088 counties in Iowa; 35 counties in Kansas; 69 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at May 29, 2008, 5:55 PM CDT for 8 counties in Iowa; 35 counties in Kansas; 69 counties in Nebraska. It was in force for 35 min.

The area

The outline as issued.

The facts

Issued
May 29, 2008, 5:55 PM CDT (22:55 UTC)
Expired
May 29, 2008, 6:30 PM CDT
In force
35 min
Issued by
the Storm Prediction Center
All 112 counties

Fremont County, IA, Harrison County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Shelby County, IA, Brown County, KS, Clay County, KS, Cloud County, KS, Decatur County, KS, Dickinson County, KS, Ellis County, KS, Ellsworth County, KS, Geary County, KS, Gove County, KS, Graham County, KS, Jackson County, KS, Jewell County, KS, Lincoln County, KS, Logan County, KS, Marshall County, KS, Mitchell County, KS, Morris County, KS, Nemaha County, KS, Norton County, KS, Osborne County, KS, Ottawa County, KS, Phillips County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Rooks County, KS, Russell County, KS, Saline County, KS, Shawnee County, KS, Sheridan County, KS, Smith County, KS, Thomas County, KS, Trego County, KS, Wabaunsee County, KS, Washington County, KS, Adams County, NE, Antelope County, NE, Blaine County, NE, Boone County, NE, Boyd County, NE, Brown County, NE, Buffalo County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Cedar 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, Franklin County, NE, Frontier County, NE, Furnas County, NE, Gage County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Holt County, NE, Howard County, NE, Jefferson County, NE, Johnson County, NE, Kearney County, NE, Keya Paha County, NE, Knox County, NE, Lancaster County, NE, Lincoln County, NE, Logan 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, Phelps County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Red Willow County, NE, Richardson County, NE, Rock County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Sherman County, NE, Stanton County, NE, Thayer County, NE, Thomas County, NE, Thurston County, NE, Valley County, NE, Washington County, NE, Wayne County, NE, Webster County, NE, Wheeler County, NE, York County, NE

The radar

The Omaha radar (KOAX), 78 km from the middle of the area, began a volume at 22:55 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.

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 10.9 hours before the alert went out and 78 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-pSkew-T log-p diagram, Omaha, NE at 12:00Z on 2008-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 27 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 12:00Z on 2008-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 265 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
27 J/kg
Mixed-layer CIN
-229 J/kg
Mixed-layer LCL
585 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
265 m²/s²
0-3 km storm-relative helicity
349 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.

IssuedProductOfficeCountiesLasted
May 28, 11:41 PM CDTMesoscale DiscussionSPCLyon, Osceola, Plymouth, Sioux94 min
May 29, 5:32 AM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Carroll, Cherokee, Clay, Crawford and 12 more118 min
May 29, 5:26 PM CDTTornado WatchSPCPlymouth, Sioux, Woodbury6 hr
May 29, 5:43 PM CDTMesoscale DiscussionSPCBenton, Black Hawk, Bremer, Buchanan, Cedar, Chickasaw and 10 more2 hr
May 29, 6:43 PM CDTTornado WatchSPCFremont, Harrison, Mills, Monona, Montgomery, Page and 2 more7 hr
May 29, 1:10 PM CDTMesoscale DiscussionSPCGrant, Hamilton, Kearny, Morton, Stanton, Stevens65 min
May 29, 1:33 PM CDTTornado WatchSPCCheyenne7 hr
May 29, 1:44 PM CDTMesoscale DiscussionSPCDecatur, Norton, Phillips, Rawlins, Sheridan61 min
May 29, 2:12 PM CDTSevere Thunderstorm WatchSPCFinney, Grant, Greeley, Hamilton, Haskell, Kearny and 11 more10 hr
May 29, 2:30 PM CDTTornado Watch PDSSPCCloud, Decatur, Ellis, Ellsworth, Gove, Graham and 14 more8 hr
May 29, 6:49 PM CDTMesoscale DiscussionSPCFinney, Grant, Gray, Greeley, Hamilton, Haskell and 13 more56 min
May 29, 12:24 PM CDTMesoscale DiscussionSPCBanner, Cheyenne, Kimball, Scotts Bluff96 min
May 29, 3:55 PM CDTMesoscale DiscussionSPCAntelope, Blaine, Boyd, Brown, Cherry, Garfield and 10 more95 min
May 29, 5:07 PM CDTMesoscale DiscussionSPCDakota, Dixon23 min

Nearby

Mesoscale Discussions in Nebraska, 2008Mesoscale Discussions in Kansas, 2008Mesoscale Discussions in Iowa, 2008Every mesoscale discussion in 2008

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.