Alert archive / Nebraska / Mesoscale Discussions in 2008

Mesoscale Discussion 1664

July 2, 20086 counties in Iowa; 50 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jul 2, 2008, 1:19 PM CDT for 6 counties in Iowa; 50 counties in Nebraska. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued: Jul 2, 2008, 1:19 PM CDT (18:19 UTC)
Expired: Jul 2, 2008, 3:15 PM CDT
In force: 116 min
Issued by: the Storm Prediction Center

All 56 counties

Fremont County, IA, Harrison County, IA, Mills County, IA, Monona County, IA, Pottawattamie County, IA, Shelby County, IA, 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, Gage County, NE, Garfield 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, Loup County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Otoe County, NE, Phelps County, NE, Platte County, NE, Polk 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, Wayne County, NE, Webster County, NE, Wheeler County, NE, York County, NE

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 6.3 hours before the alert went out and 111 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: 475 J/kg
Mixed-layer CIN: -201 J/kg
Mixed-layer LCL: 1738 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: -139 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Jul 2, 9:42 AM CDT	Mesoscale Discussion	SPC	Cedar, Clinton, Delaware, Dubuque, Jackson, Jones and 1 more	2 hr
Jul 2, 1:55 PM CDT	Mesoscale Discussion	SPC	Allamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 37 more	95 min
Jul 2, 3:08 PM CDT	Severe Thunderstorm Watch	SPC	Cedar, Clinton, Delaware, Des Moines, Dubuque, Henry and 11 more	7 hr
Jul 2, 5:59 PM CDT	Mesoscale Discussion	SPC	Taylor	61 min
Jul 2, 2:27 PM CDT	Severe Thunderstorm Watch	SPC	Box Butte, Dawes, Sioux	8 hr
Jul 2, 5:57 PM CDT	Mesoscale Discussion	SPC	Box Butte, Dawes, Morrill, Scotts Bluff, Sioux	63 min

Nearby

Mesoscale Discussions in Nebraska, 2008 Mesoscale Discussions in Iowa, 2008 Every 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.