Alert archive / Iowa / Mesoscale Discussions in 2011

Mesoscale Discussion 1151

June 9, 201143 counties in Iowa; 12 counties in Missouri; 38 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jun 9, 2011, 9:50 AM CDT for 43 counties in Iowa; 12 counties in Missouri; 38 counties in Nebraska. It was in force for 55 min.

The area

The outline as issued.

The facts

Issued: Jun 9, 2011, 9:50 AM CDT (14:50 UTC)
Expired: Jun 9, 2011, 10:45 AM CDT
In force: 55 min
Issued by: the Storm Prediction Center

All 93 counties

Adair County, IA, Adams County, IA, Appanoose County, IA, Audubon County, IA, Boone County, IA, Buena Vista County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Cherokee County, IA, Clarke County, IA, Crawford County, IA, Dallas County, IA, Davis County, IA, Decatur County, IA, Fremont County, IA, Greene County, IA, Guthrie County, IA, Harrison County, IA, Ida County, IA, Jasper County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Mills County, IA, Monona County, IA, Monroe County, IA, Montgomery County, IA, Page County, IA, Plymouth County, IA, Polk County, IA, Pottawattamie County, IA, Ringgold County, IA, Sac County, IA, Shelby County, IA, Taylor County, IA, Union County, IA, Van Buren County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA, Woodbury County, IA, Adair County, MO, Atchison County, MO, Gentry County, MO, Harrison County, MO, Holt County, MO, Mercer County, MO, Nodaway County, MO, Putnam County, MO, Schuyler County, MO, Scotland County, MO, Sullivan County, MO, Worth County, MO, Antelope County, NE, Boone County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Cedar County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Dodge County, NE, Douglas County, NE, Garfield County, NE, Greeley County, NE, Holt County, NE, Howard County, NE, Johnson County, NE, Knox County, NE, Lancaster County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Nemaha County, NE, Otoe County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Richardson County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Stanton County, NE, Thurston County, NE, Valley County, NE, Washington County, NE, Wayne County, NE, Wheeler County, NE, York County, NE

The radar

The Des Moines radar (KDMX), 111 km from the middle of the area, began a volume at 14:51 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

Omaha, NE (KOAX), launched 12:00Z, 2.8 hours before the alert went out and 132 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1172 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 174 m²/s²
0-3 km storm-relative helicity: 304 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
Jun 8, 8:43 PM CDT	Mesoscale Discussion	SPC	Cedar, Clinton, Davis, Des Moines, Dubuque, Henry and 14 more	92 min
Jun 9, 1:44 AM CDT	Mesoscale Discussion	SPC	Adair, Adams, Appanoose, Audubon, Benton, Boone and 48 more	2 hr
Jun 9, 3:05 PM CDT	Tornado Watch	SPC	Appanoose, Decatur, Fremont, Page, Ringgold, Taylor and 1 more	7 hr
Jun 9, 2:13 PM CDT	Mesoscale Discussion	SPC	Andrew, Atchison, Buchanan, Cass, Clay, Clinton and 6 more	92 min
Jun 9, 4:29 PM CDT	Mesoscale Discussion	SPC	Clark, Knox, Lewis, Marion, Monroe, Pike and 2 more	61 min
Jun 9, 4:43 PM CDT	Severe Thunderstorm Watch	SPC	Audrain, Knox, Lewis, Lincoln, Marion, Monroe and 3 more	5 hr

Nearby

Mesoscale Discussions in Iowa, 2011 Mesoscale Discussions in Nebraska, 2011 Mesoscale Discussions in Missouri, 2011 Every mesoscale discussion in 2011

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.