Alert archive / Indiana / Mesoscale Discussions in 2008

Mesoscale Discussion 348

March 4, 20085 counties in Illinois; 13 counties in Indiana

The Storm Prediction Center issued this mesoscale discussion at Mar 4, 2008, 1:28 PM CST for 5 counties in Illinois; 13 counties in Indiana. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: Mar 4, 2008, 1:28 PM CST (19:28 UTC)
Expired: Mar 4, 2008, 5:30 PM CST
In force: 4 hr
Issued by: the Storm Prediction Center

Counties DeWitt County, IL, Ford County, IL, Iroquois County, IL, Macon County, IL, Piatt County, IL, Benton County, IN, Carroll County, IN, Cass County, IN, Fulton County, IN, Jasper County, IN, Kosciusko County, IN, Marshall County, IN, Miami County, IN, Newton County, IN, Pulaski County, IN, Wabash County, IN, White County, IN, Whitley County, IN

The radar

The Lincoln radar (KILX), 127 km from the middle of the area, began a volume at 19:29 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

Lincoln, IL (KILX), launched 12:00Z, 7.5 hours before the alert went out and 68 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: 1066 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: -9 m²/s²
0-3 km storm-relative helicity: 144 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
Mar 3, 7:31 PM CST	Mesoscale Discussion	SPC	Bond, Clark, Clay, Clinton, Coles, Crawford and 18 more	5 hr
Mar 4, 8:08 AM CST	Mesoscale Discussion	SPC	Delaware, Randolph, Wayne	4 hr
Mar 4, 3:48 PM CST	Mesoscale Discussion	SPC	Adams, Allen, Blackford, DeKalb, Delaware, Jay and 1 more	4 hr

Nearby

Mesoscale Discussions in Indiana, 2008 Mesoscale Discussions in Illinois, 2008 Every mesoscale discussion in 2008

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.