Alert archive / Indiana / Mesoscale Discussions in 2007

Mesoscale Discussion 2231

December 15, 20074 states

The Storm Prediction Center issued this mesoscale discussion at Dec 15, 2007, 11:52 PM CST for 4 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Dec 15, 2007, 11:52 PM CST (05:52 UTC)
Expired: Dec 16, 2007, 4:45 AM CST
In force: 5 hr
Issued by: the Storm Prediction Center

All 118 counties

Champaign County, IL, Clark County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Ford County, IL, Iroquois County, IL, Kankakee County, IL, Livingston County, IL, Moultrie County, IL, Piatt County, IL, Vermilion County, IL, Will County, IL, Adams County, IN, Allen County, IN, Benton County, IN, Blackford County, IN, Boone County, IN, Carroll County, IN, Cass County, IN, Clay County, IN, Clinton County, IN, DeKalb County, IN, Delaware County, IN, Elkhart 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, Kosciusko County, IN, LaGrange County, IN, Lake County, IN, LaPorte County, IN, Madison County, IN, Marion County, IN, Marshall County, IN, Miami County, IN, Montgomery County, IN, Morgan County, IN, Newton County, IN, Noble County, IN, Owen County, IN, Parke County, IN, Porter County, IN, Pulaski County, IN, Putnam County, IN, Randolph County, IN, Saint Joseph County, IN, Shelby County, IN, Starke County, IN, Steuben County, IN, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Vigo County, IN, Wabash County, IN, Warren County, IN, Wells 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, 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, Midland County, MI, Monroe County, MI, Montcalm County, MI, Oakland 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, Allen County, OH, Defiance County, OH, Fulton County, OH, Henry County, OH, Lucas County, OH, Mercer 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), 44 km from the middle of the area, began a volume at 05:54 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

Detroit, MI (KDTX), launched 00:00Z, 5.9 hours before the alert went out and 199 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: 503 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: 243 m²/s²
0-3 km storm-relative helicity: 389 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.

Issued	Product	Office	Counties	Lasted
Dec 15, 6:29 PM CST	Mesoscale Discussion	SPC	Adams, Brown, Bureau, Calhoun, Cass, Champaign and 44 more	6 hr
Dec 16, 6:28 AM CST	Mesoscale Discussion	SPC	Adams, Allen, Blackford, DeKalb, Huntington, Jay and 6 more	4 hr
Dec 15, 6:43 PM CST	Mesoscale Discussion	SPC	Columbiana, Mahoning	6 hr

Nearby

Mesoscale Discussions in Indiana, 2007 Mesoscale Discussions in Michigan, 2007 Mesoscale Discussions in Illinois, 2007 Every 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.