Alert archive / Michigan / Mesoscale Discussions in 2011

Mesoscale Discussion 1572

July 11, 20115 states

The Storm Prediction Center issued this mesoscale discussion at Jul 11, 2011, 7:10 AM CDT for 5 states. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued
Jul 11, 2011, 7:10 AM CDT (12:10 UTC)
Expired
Jul 11, 2011, 8:45 AM CDT
In force
95 min
Issued by
the Storm Prediction Center
All 111 counties

Boone County, IL, Bureau County, IL, Cass County, IL, Cook County, IL, DeKalb County, IL, DuPage County, IL, Ford County, IL, Fulton County, IL, Grundy County, IL, Henry County, IL, Iroquois County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Knox County, IL, Lake County, IL, LaSalle County, IL, Lee County, IL, Livingston County, IL, Marshall County, IL, Mason County, IL, McHenry County, IL, McLean County, IL, Ogle County, IL, Peoria County, IL, Putnam County, IL, Stark County, IL, Stephenson County, IL, Tazewell County, IL, Whiteside County, IL, Will County, IL, Winnebago County, IL, Woodford County, IL, Allen County, IN, Cass County, IN, DeKalb County, IN, Elkhart County, IN, Fulton County, IN, Huntington County, IN, Jasper County, IN, Kosciusko County, IN, LaGrange County, IN, Lake County, IN, LaPorte County, IN, Marshall County, IN, Miami County, IN, Newton County, IN, Noble County, IN, Porter County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Steuben County, IN, Wabash County, IN, White County, IN, Whitley County, IN, Allegan County, MI, Barry County, MI, Bay County, MI, Berrien County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Clinton County, MI, Eaton County, MI, Genesee County, MI, Gratiot County, MI, Hillsdale County, MI, Huron County, MI, Ingham County, MI, Ionia County, MI, Isabella County, MI, Jackson County, MI, Kalamazoo County, MI, Kent County, MI, Lapeer County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Mecosta County, MI, Midland County, MI, Monroe County, MI, Montcalm County, MI, Muskegon County, MI, Newaygo County, MI, Oakland County, MI, Oceana County, MI, Ottawa County, MI, Saginaw County, MI, Saint Clair County, MI, Saint Joseph County, MI, Sanilac County, MI, Shiawassee County, MI, Tuscola County, MI, Van Buren County, MI, Washtenaw County, MI, Wayne County, MI, Defiance County, OH, Fulton County, OH, Henry County, OH, Paulding County, OH, Williams County, OH, Dane County, WI, Green County, WI, Jefferson County, WI, Kenosha County, WI, Milwaukee County, WI, Racine County, WI, Rock County, WI, Walworth County, WI, Waukesha County, WI

The radar

The Grand Rapids radar (KGRR), 65 km from the middle of the area, began a volume at 12:10 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, 0.2 hours before the alert went out and 166 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, 7:50 AM CDTMesoscale DiscussionSPCChampaign, Clark, Coles, Cook, DeWitt, Douglas and 14 more55 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, 8:07 AM CDTSevere Thunderstorm WatchSPCBay, Genesee, Huron, Lapeer, Lenawee, Livingston and 11 more4 hr
Jul 11, 9:16 AM CDTSevere Thunderstorm WatchSPCAdams, Allen, Ashland, Ashtabula, Auglaize, Belmont and 64 more9 hr
Jul 11, 12:42 PM CDTMesoscale DiscussionSPCAshland, Ashtabula, Athens, Auglaize, Belmont, Carroll and 59 more93 min
Jul 11, 1:16 PM CDTSevere Thunderstorm WatchSPCAthens, Gallia, Jackson, Lawrence, Meigs, Monroe and 5 more6 hr
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 Michigan, 2011Mesoscale Discussions in Illinois, 2011Mesoscale Discussions in Indiana, 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.