Alert archive / Iowa / Mesoscale Discussions in 2015

Mesoscale Discussion 1149

June 24, 20154 states

The Storm Prediction Center issued this mesoscale discussion at Jun 24, 2015, 12:39 AM CDT for 4 states. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued: Jun 24, 2015, 12:39 AM CDT (05:39 UTC)
Expired: Jun 24, 2015, 1:45 AM CDT
In force: 66 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

All 105 counties

Adair County, IA, Adams County, IA, Appanoose County, IA, Audubon County, IA, Boone County, IA, Calhoun County, IA, Carroll County, IA, Cass 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, Jefferson County, IA, Keokuk County, IA, Lee 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, Polk County, IA, Pottawattamie County, IA, Ringgold County, IA, Sac County, IA, Shelby County, IA, Story County, IA, Taylor County, IA, Union County, IA, Van Buren County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA, Woodbury County, IA, Adams County, IL, Hancock County, IL, Adair County, MO, Clark County, MO, Daviess County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Knox County, MO, Lewis County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Marion County, MO, Mercer County, MO, Monroe County, MO, Nodaway County, MO, Putnam County, MO, Ralls County, MO, Randolph County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, Sullivan County, MO, Worth County, MO, Antelope County, NE, Boone County, NE, Buffalo County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Colfax County, NE, Cuming County, NE, Custer County, NE, Dakota County, NE, Dodge County, NE, Douglas County, NE, Garfield County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Howard County, NE, Lancaster County, NE, Loup County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Sherman 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 Omaha radar (KOAX), 106 km from the middle of the area, began a volume at 05:41 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 00:00Z, 5.7 hours before the alert went out and 107 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: 1607 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: -115 m²/s²
0-3 km storm-relative helicity: 232 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

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 24, 10:19 AM CDT	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Carroll, Cass, Clarke and 16 more	116 min
Jun 24, 2:23 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Appanoose, Cass, Clarke, Decatur and 13 more	2 hr
Jun 24, 5:58 PM CDT	Mesoscale Discussion	SPC	Adair, Audubon, Boone, Carroll, Clarke, Crawford and 11 more	2 hr
Jun 24, 6:21 PM CDT	Tornado Watch	SPC	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 42 more	5 hr
Jun 23, 11:26 PM CDT	Mesoscale Discussion	SPC	Dundy, Frontier, Furnas, Hitchcock, Red Willow	2 hr
Jun 24, 3:23 AM CDT	Mesoscale Discussion	SPC	Dawes	97 min
Jun 24, 5:19 AM CDT	Mesoscale Discussion	SPC	Cherry	56 min
Jun 24, 1:27 PM CDT	Mesoscale Discussion	SPC	Box Butte, Dawes, Scotts Bluff, Sioux	2 hr
Jun 24, 3:34 PM CDT	Mesoscale Discussion	SPC	Banner, Cheyenne, Kimball	86 min

Nearby

Mesoscale Discussions in Iowa, 2015 Mesoscale Discussions in Nebraska, 2015 Mesoscale Discussions in Missouri, 2015 Every mesoscale discussion in 2015

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.