Alert archive / Indiana / Mesoscale Discussions in 2005

Mesoscale Discussion 1879

July 26, 20054 states

The Storm Prediction Center issued this mesoscale discussion at Jul 26, 2005, 10:31 AM CDT for 4 states. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued
Jul 26, 2005, 10:31 AM CDT (15:31 UTC)
Expired
Jul 26, 2005, 12:00 PM CDT
In force
89 min
Issued by
the Storm Prediction Center
All 79 counties

Cass County, IL, Champaign County, IL, DeWitt County, IL, Ford County, IL, Fulton County, IL, Iroquois County, IL, Kankakee County, IL, Livingston County, IL, Logan County, IL, Macon County, IL, Marshall County, IL, Mason County, IL, McLean County, IL, Menard County, IL, Peoria County, IL, Piatt County, IL, Sangamon County, IL, Tazewell County, IL, Vermilion County, IL, Woodford County, IL, Adams County, IN, Allen County, IN, Benton County, IN, Carroll County, IN, Cass County, IN, Clinton County, IN, DeKalb County, IN, Elkhart County, IN, Fountain County, IN, Fulton County, IN, Grant County, IN, Howard 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, Tippecanoe County, IN, Wabash County, IN, Warren County, IN, Wells County, IN, White County, IN, Whitley County, IN, Berrien County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Hillsdale County, MI, Ingham County, MI, Jackson County, MI, Lapeer County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Monroe County, MI, Oakland County, MI, Saint Clair County, MI, Saint Joseph County, MI, Washtenaw County, MI, Wayne County, MI, Defiance County, OH, Fulton County, OH, Henry County, OH, Lucas County, OH, Paulding County, OH, Putnam County, OH, Van Wert County, OH, Williams County, OH, Wood County, OH

The radar

The Northern Indiana radar (KIWX), 29 km from the middle of the area, began a volume at 15:34 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, 3.5 hours before the alert went out and 254 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 2005-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1648 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 2005-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 97 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
1648 J/kg
Mixed-layer CIN
-66 J/kg
Mixed-layer LCL
892 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
97 m²/s²
0-3 km storm-relative helicity
88 m²/s²
Significant tornado parameter
0.5
Supercell composite
1.9

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 25, 8:10 PM CDTMesoscale DiscussionSPCCook, DuPage, Kane, Lake65 min
Jul 25, 11:25 PM CDTSevere Thunderstorm WatchSPCBoone, Lake, McHenry5 hr
Jul 26, 11:00 AM CDTSevere Thunderstorm WatchSPCChampaign, Clark, Coles, Cumberland, Douglas, Edgar and 5 more7 hr
Jul 26, 2:24 PM CDTMesoscale DiscussionSPCClay, Crawford, Edwards, Franklin, Gallatin, Hamilton and 13 more66 min
Jul 26, 2:45 PM CDTSevere Thunderstorm WatchSPCClay, Crawford, Edwards, Franklin, Gallatin, Hamilton and 16 more7 hr
Jul 26, 4:59 PM CDTMesoscale DiscussionSPCChampaign, Coles, Cumberland, DeWitt, Douglas, Edgar and 12 more61 min
Jul 26, 5:40 PM CDTSevere Thunderstorm WatchSPCChampaign, Clark, Coles, Cumberland, Douglas, Edgar and 8 more6 hr
Jul 26, 2:30 PM CDTSevere Thunderstorm WatchSPCAdams, Dearborn, Jay, Ohio, Randolph, Union and 1 more8 hr
Jul 26, 1:31 AM CDTMesoscale DiscussionSPCArenac, Bay, Genesee, Lapeer, Livingston, Oakland and 3 more89 min
Jul 26, 3:33 AM CDTMesoscale DiscussionSPCArenac, Bay, Genesee, Lapeer, Macomb, Oakland and 2 more87 min
Jul 26, 1:00 PM CDTMesoscale DiscussionSPCCarroll, Columbiana, Coshocton, Guernsey, Harrison, Holmes and 9 more90 min
Jul 26, 1:58 PM CDTMesoscale DiscussionSPCAshland, Carroll, Columbiana, Cuyahoga, Geauga, Harrison and 13 more62 min

Nearby

Mesoscale Discussions in Indiana, 2005Mesoscale Discussions in Illinois, 2005Mesoscale Discussions in Michigan, 2005Every mesoscale discussion in 2005

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.