Alert archive / Indiana / Mesoscale Discussions in 2007

Mesoscale Discussion 1882

August 24, 20075 states

The Storm Prediction Center issued this mesoscale discussion at Aug 24, 2007, 2:44 PM CDT for 5 states. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued
Aug 24, 2007, 2:44 PM CDT (19:44 UTC)
Expired
Aug 24, 2007, 4:15 PM CDT
In force
91 min
Issued by
the Storm Prediction Center
All 146 counties

Bond County, IL, Champaign County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, DeWitt County, IL, Douglas County, IL, Edgar County, IL, Effingham County, IL, Fayette County, IL, Ford County, IL, Greene County, IL, Iroquois County, IL, Jasper County, IL, Jefferson County, IL, Jersey County, IL, Lawrence County, IL, Logan County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, McLean County, IL, Menard County, IL, Monroe County, IL, Montgomery County, IL, Moultrie County, IL, Piatt County, IL, Randolph County, IL, Richland County, IL, Saint Clair County, IL, Sangamon County, IL, Shelby County, IL, Vermilion County, IL, Washington County, IL, Wayne 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, Decatur County, IN, DeKalb County, IN, Delaware County, IN, Elkhart County, IN, Fayette County, IN, Fountain 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, Jasper County, IN, Jay County, IN, Johnson County, IN, Knox County, IN, Kosciusko County, IN, LaGrange 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, Owen County, IN, Parke County, IN, Pulaski County, IN, Putnam County, IN, Randolph County, IN, Rush County, IN, Saint Joseph County, IN, Shelby County, IN, Starke County, IN, Steuben County, IN, Sullivan 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, Branch County, MI, Hillsdale County, MI, Jackson County, MI, Lenawee County, MI, Saint Joseph County, MI, City of Saint Louis, MO, Crawford County, MO, Dent County, MO, Franklin County, MO, Jefferson County, MO, Laclede County, MO, Maries County, MO, Phelps County, MO, Pulaski County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Texas County, MO, Washington County, MO, Webster County, MO, Wright County, MO, Allen County, OH, Auglaize County, OH, Darke County, OH, Defiance County, OH, Fulton County, OH, Hancock County, OH, Hardin County, OH, Henry County, OH, Logan County, OH, Lucas County, OH, Mercer County, OH, Ottawa County, OH, Paulding County, OH, Putnam County, OH, Sandusky County, OH, Seneca County, OH, Shelby County, OH, Van Wert County, OH, Williams County, OH, Wood County, OH, Wyandot County, OH

The radar

The Lincoln radar (KILX), 130 km from the middle of the area, began a volume at 19:45 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

Lincoln, IL (KILX), launched 12:00Z, 7.7 hours before the alert went out and 71 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, Lincoln, IL at 12:00Z on 2007-08-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1385 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, Lincoln, IL at 12:00Z on 2007-08-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 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
1385 J/kg
Mixed-layer CIN
-74 J/kg
Mixed-layer LCL
871 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.3

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
Aug 23, 7:10 PM CDTSevere Thunderstorm WatchSPCBureau, Cook, Ford, Fulton, Grundy, Hancock and 20 more5 hr
Aug 23, 11:07 PM CDTMesoscale DiscussionSPCBureau, Grundy, Henderson, Henry, Kankakee, Kendall and 11 more53 min
Aug 24, 11:12 AM CDTMesoscale DiscussionSPCBond, Calhoun, Christian, Clay, Clinton, Coles and 24 more93 min
Aug 24, 12:19 PM CDTSevere Thunderstorm WatchSPCBond, Calhoun, Cass, Champaign, Christian, Clark and 37 more8 hr
Aug 24, 3:04 PM CDTSevere Thunderstorm WatchSPCFord, Iroquois7 hr
Aug 24, 5:50 PM CDTMesoscale DiscussionSPCBond, Champaign, Christian, Clark, Clay, Clinton and 39 more85 min
Aug 23, 7:30 PM CDTMesoscale DiscussionSPCDeKalb, Elkhart, Kosciusko, LaGrange, Marshall, Noble and 2 more90 min
Aug 23, 9:54 PM CDTMesoscale DiscussionSPCAllen, DeKalb, Elkhart, Kosciusko, LaGrange, Marshall and 4 more66 min
Aug 23, 7:47 PM CDTMesoscale DiscussionSPCAndrew, Atchison, Buchanan, DeKalb, Gentry, Harrison and 5 more118 min
Aug 23, 7:55 PM CDTMesoscale DiscussionSPCAndrew, Atchison, Buchanan, DeKalb, Gentry, Harrison and 5 more2 hr
Aug 23, 11:01 PM CDTMesoscale DiscussionSPCAndrew, Atchison, Buchanan, Daviess, DeKalb, Gentry and 9 more119 min
Aug 24, 3:05 AM CDTMesoscale DiscussionSPCAndrew, Buchanan, Caldwell, Carroll, Clay, Clinton and 6 more115 min
Aug 24, 1:31 PM CDTMesoscale DiscussionSPCBarry, Barton, Christian, Dade, Greene, Jasper and 5 more89 min

Nearby

Mesoscale Discussions in Indiana, 2007Mesoscale Discussions in Illinois, 2007Mesoscale Discussions in Ohio, 2007Every mesoscale discussion in 2007

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.