Alert archive / Indiana / Mesoscale Discussions in 2006

Mesoscale Discussion 265

March 12, 200616 counties in Indiana; 6 counties in Michigan

The Storm Prediction Center issued this mesoscale discussion at Mar 12, 2006, 6:54 PM EST for 16 counties in Indiana; 6 counties in Michigan. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued: Mar 12, 2006, 6:54 PM EST (23:54 UTC)
Expired: Mar 12, 2006, 8:30 PM EST
In force: 96 min
Issued by: the Storm Prediction Center

All 22 counties

Allen County, IN, DeKalb County, IN, Elkhart County, IN, Fulton County, IN, Huntington County, IN, Kosciusko County, IN, LaGrange County, IN, LaPorte County, IN, Marshall County, IN, Noble County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Steuben County, IN, Wabash County, IN, Whitley County, IN, Berrien County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Kalamazoo County, MI, Saint Joseph County, MI

The radar

The Northern Indiana radar (KIWX), 20 km from the middle of the area, began a volume at 23:54 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

Lincoln, IL (KILX), launched 12:00Z, 11.9 hours before the alert went out and 265 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: 1044 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: 74 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 11, 9:06 PM EST	Mesoscale Discussion	SPC	Benton, Clay, Fountain, Jasper, Montgomery, Newton and 6 more	84 min
Mar 11, 10:11 PM EST	Mesoscale Discussion	SPC	Gibson, Knox, Parke, Posey, Sullivan, Vigo	94 min
Mar 11, 11:50 PM EST	Mesoscale Discussion	SPC	Crawford, Dubois, Gibson, Orange, Perry, Pike and 4 more	55 min
Mar 12, 12:10 AM EST	Tornado Watch	SPC	Daviess, Gibson, Knox, Pike, Posey, Spencer and 2 more	2 hr
Mar 12, 2:07 AM EST	Tornado Watch	SPC	Crawford, Daviess, Dubois, Gibson, Jackson, Knox and 10 more	7 hr
Mar 12, 4:39 AM EST	Mesoscale Discussion	SPC	Daviess, Dubois, Gibson, Knox, Martin, Perry and 5 more	96 min
Mar 12, 7:54 AM EST	Mesoscale Discussion	SPC	Perry, Spencer	96 min
Mar 12, 2:02 PM EST	Mesoscale Discussion	SPC	Crawford, Dubois, Gibson, Harrison, Perry, Pike and 4 more	88 min
Mar 12, 5:22 PM EST	Mesoscale Discussion	SPC	Lake, Porter	53 min
Mar 12, 5:49 PM EST	Tornado Watch	SPC	Benton, Jasper, Lake, Newton, Porter	5 hr

Nearby

Mesoscale Discussions in Indiana, 2006 Mesoscale Discussions in Michigan, 2006 Every mesoscale discussion in 2006

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.