Alert archive / Indiana / Mesoscale Discussions in 2011

Mesoscale Discussion 1573

July 11, 20116 states

The Storm Prediction Center issued this mesoscale discussion at Jul 11, 2011, 7:50 AM CDT for 6 states. It was in force for 55 min.

The area

The outline as issued.

The facts

Issued
Jul 11, 2011, 7:50 AM CDT (12:50 UTC)
Expired
Jul 11, 2011, 8:45 AM CDT
In force
55 min
Issued by
the Storm Prediction Center
All 181 counties

Champaign County, IL, Clark County, IL, Coles County, IL, Cook County, IL, DeWitt County, IL, Douglas County, IL, DuPage County, IL, Edgar County, IL, Ford County, IL, Grundy County, IL, Iroquois County, IL, Kankakee County, IL, Kendall County, IL, Lake County, IL, Livingston County, IL, McLean County, IL, Piatt County, IL, Vermilion County, IL, Will County, IL, Woodford County, IL, Adams County, IN, Allen County, IN, Bartholomew County, IN, Benton County, IN, Blackford County, IN, Boone County, IN, Brown County, IN, Carroll County, IN, Cass County, IN, Clay County, IN, Clinton County, IN, Dearborn County, IN, Decatur County, IN, DeKalb County, IN, Delaware County, IN, Elkhart County, IN, Fayette County, IN, Fountain County, IN, Franklin County, IN, Fulton County, IN, Grant County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Huntington County, IN, Jackson County, IN, Jasper County, IN, Jay County, IN, Jefferson County, IN, Jennings County, IN, Johnson County, IN, Kosciusko County, IN, LaGrange County, IN, Lake County, IN, LaPorte County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Marshall County, IN, Miami County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Newton County, IN, Noble County, IN, Ohio County, IN, Owen County, IN, Parke County, IN, Porter County, IN, Pulaski County, IN, Putnam County, IN, Randolph County, IN, Ripley County, IN, Rush County, IN, Saint Joseph County, IN, Scott County, IN, Shelby County, IN, Starke County, IN, Steuben County, IN, Switzerland County, IN, Tippecanoe County, IN, Tipton County, IN, Union County, IN, Vermillion County, IN, Vigo County, IN, Wabash County, IN, Warren County, IN, Wayne County, IN, Wells County, IN, White County, IN, Whitley County, IN, Boone County, KY, Campbell County, KY, Carroll County, KY, Gallatin County, KY, Grant County, KY, Henry County, KY, Kenton County, KY, Owen County, KY, Pendleton County, KY, Trimble County, KY, Allegan County, MI, Barry County, MI, Berrien County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Eaton County, MI, Hillsdale County, MI, Ingham County, MI, Jackson County, MI, Kalamazoo County, MI, Lenawee County, MI, Livingston County, MI, Monroe County, MI, Oakland County, MI, Saint Joseph County, MI, Van Buren County, MI, Washtenaw County, MI, Wayne County, MI, Allen County, OH, Ashland County, OH, Auglaize County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Coshocton County, OH, Crawford County, OH, Darke County, OH, Defiance County, OH, Delaware County, OH, Erie County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Fulton County, OH, Greene County, OH, Hamilton County, OH, Hancock County, OH, Hardin County, OH, Henry County, OH, Highland County, OH, Holmes County, OH, Huron County, OH, Knox County, OH, Licking County, OH, Logan County, OH, Lucas County, OH, Madison County, OH, Marion County, OH, Medina County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Morrow County, OH, Muskingum County, OH, Ottawa County, OH, Paulding County, OH, Perry County, OH, Pickaway County, OH, Preble County, OH, Putnam County, OH, Richland County, OH, Ross County, OH, Sandusky County, OH, Seneca County, OH, Shelby County, OH, Union County, OH, Van Wert County, OH, Warren County, OH, Wayne County, OH, Williams County, OH, Wood County, OH, Wyandot County, OH, Kenosha County, WI

The radar

The Northern Indiana radar (KIWX), 94 km from the middle of the area, began a volume at 12:52 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

Detroit, MI (KDTX), launched 12:00Z, 0.8 hours before the alert went out and 200 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, Detroit, MI at 12:00Z on 2011-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 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, Detroit, MI at 12:00Z on 2011-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 square meters per square second.193958Sfc1 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
4 J/kg
Mixed-layer CIN
-284 J/kg
Mixed-layer LCL
1566 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
149 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.

IssuedProductOfficeCountiesLasted
Jul 11, 3:30 AM CDTSevere Thunderstorm WatchSPCBureau, Carroll, Henry, Jo Daviess, Mercer, Putnam and 3 more6 hr
Jul 11, 5:07 AM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 17 more113 min
Jul 11, 5:37 AM CDTSevere Thunderstorm WatchSPCBoone, Cook, DeKalb, DuPage, Grundy, Kane and 9 more6 hr
Jul 11, 7:10 AM CDTMesoscale DiscussionSPCBoone, Bureau, Cass, Cook, DeKalb, DuPage and 27 more95 min
Jul 11, 5:16 PM CDTMesoscale DiscussionSPCCass, Champaign, DeWitt, Douglas, Ford, Fulton and 19 more59 min
Jul 11, 9:55 AM CDTMesoscale DiscussionSPCAdams, Allen, Blackford, Carroll, Cass, Clinton and 26 more65 min
Jul 11, 11:34 AM CDTMesoscale DiscussionSPCAdams, Allen, Blackford, Delaware, Grant, Huntington and 5 more56 min
Jul 11, 2:43 PM CDTMesoscale DiscussionSPCDearborn, Ohio, Ripley, Switzerland92 min
Jul 11, 4:54 PM CDTMesoscale DiscussionSPCDearborn, Franklin, Ohio96 min
Jul 11, 6:18 PM CDTSevere Thunderstorm WatchSPCAdams, Blackford, Boone, Carroll, Cass, Clinton and 30 more3 hr
Jul 11, 9:16 AM CDTSevere Thunderstorm WatchSPCLewis9 hr
Jul 11, 1:16 PM CDTSevere Thunderstorm WatchSPCBoyd, Carter, Greenup, Lawrence6 hr
Jul 11, 8:07 AM CDTSevere Thunderstorm WatchSPCBay, Genesee, Huron, Lapeer, Lenawee, Livingston and 11 more4 hr
Jul 11, 12:42 PM CDTMesoscale DiscussionSPCAshland, Ashtabula, Athens, Auglaize, Belmont, Carroll and 59 more93 min
Jul 10, 7:51 PM CDTMesoscale DiscussionSPCBuffalo, Crawford, Dunn, Eau Claire, La Crosse, Pepin and 4 more84 min
Jul 10, 9:53 PM CDTMesoscale DiscussionSPCBuffalo, Crawford, Dunn, Eau Claire, Jackson, La Crosse and 7 more67 min
Jul 10, 10:10 PM CDTSevere Thunderstorm WatchSPCBarron, Buffalo, Chippewa, Dunn, Eau Claire, La Crosse and 6 more6 hr
Jul 10, 11:45 PM CDTMesoscale DiscussionSPCBuffalo, Chippewa, Crawford, Dunn, Eau Claire, Jackson and 7 more90 min
Jul 11, 2:07 AM CDTMesoscale DiscussionSPCAdams, Brown, Calumet, Clark, Columbia, Dodge and 27 more83 min

Nearby

Mesoscale Discussions in Indiana, 2011Mesoscale Discussions in Ohio, 2011Mesoscale Discussions in Illinois, 2011Every 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.