Alert archive / Nebraska / Mesoscale Discussions in 2010

Mesoscale Discussion 902

June 12, 20108 counties in Iowa; 5 counties in Kansas; 52 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jun 12, 2010, 3:16 AM CDT for 8 counties in Iowa; 5 counties in Kansas; 52 counties in Nebraska. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued
Jun 12, 2010, 3:16 AM CDT (08:16 UTC)
Expired
Jun 12, 2010, 4:15 AM CDT
In force
59 min
Issued by
the Storm Prediction Center
All 65 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, Decatur County, KS, Jewell County, KS, Norton County, KS, Phillips County, KS, Smith County, KS, Adams County, NE, Boone County, NE, Buffalo County, NE, Burt County, NE, Butler County, NE, Cass 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, Furnas County, NE, Gage County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Howard County, NE, Jefferson County, NE, Johnson County, NE, Kearney County, NE, Lancaster County, NE, Lincoln County, NE, Logan 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, Platte County, NE, Polk County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Sherman County, NE, Stanton County, NE, Thayer County, NE, Thurston County, NE, Valley County, NE, Washington County, NE, Webster County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 63 km from the middle of the area, began a volume at 08:17 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 8.3 hours before the alert went out and 206 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, N. Platte/Lee Bi, NE at 00:00Z on 2010-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1323 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, N. Platte/Lee Bi, NE at 00:00Z on 2010-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 112 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
1323 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
871 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
112 m²/s²
0-3 km storm-relative helicity
297 m²/s²
Significant tornado parameter
2.2
Supercell composite
12.6

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
Jun 12, 1:00 AM CDTSevere Thunderstorm WatchSPCFremont, Harrison, Mills, Monona, Montgomery, Page and 2 more6 hr
Jun 12, 4:21 AM CDTMesoscale DiscussionSPCIowa, Johnson, Keokuk, Mahaska, Marion, Warren and 1 more84 min
Jun 12, 5:27 AM CDTMesoscale DiscussionSPCFremont, Mills, Montgomery, Page, Pottawattamie63 min
Jun 11, 7:34 PM CDTTornado WatchSPCCheyenne, Decatur, Gove, Graham, Greeley, Logan and 11 more5 hr
Jun 11, 8:44 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Logan, Norton, Rawlins, Sheridan and 3 more2 hr
Jun 11, 10:34 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Gove, Graham, Jewell, Logan and 8 more86 min
Jun 12, 2:00 PM CDTMesoscale DiscussionSPCClark, Ford, Gray, Haskell, Hodgeman, Meade and 1 more60 min
Jun 12, 2:41 PM CDTTornado WatchSPCBarton, Clark, Comanche, Edwards, Ellsworth, Finney and 19 more7 hr
Jun 12, 6:32 PM CDTMesoscale DiscussionSPCBarton, Clark, Edwards, Ford, Gray, Hodgeman and 8 more3 hr

Nearby

Mesoscale Discussions in Nebraska, 2010Mesoscale Discussions in Iowa, 2010Mesoscale Discussions in Kansas, 2010Every mesoscale discussion in 2010

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.