Alert archive / Indiana / Mesoscale Discussions in 2006

Mesoscale Discussion 377

March 31, 20064 states

The Storm Prediction Center issued this mesoscale discussion at Mar 31, 2006, 12:57 PM CST for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Mar 31, 2006, 12:57 PM CST (18:57 UTC)
Expired: Mar 31, 2006, 3:00 PM CST
In force: 2 hr
Issued by: the Storm Prediction Center

All 70 counties

Clark County, IL, Crawford County, IL, Edwards County, IL, Franklin County, IL, Hamilton County, IL, Jasper County, IL, Lawrence County, IL, Richland County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Adams County, IN, Allen County, IN, Blackford County, IN, Boone County, IN, Brown County, IN, Carroll County, IN, Cass County, IN, Clay County, IN, Clinton County, IN, Daviess County, IN, DeKalb County, IN, Delaware County, IN, Dubois County, IN, Fountain County, IN, Fulton County, IN, Gibson County, IN, Grant County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Howard County, IN, Huntington County, IN, Johnson County, IN, Knox County, IN, Kosciusko County, IN, LaGrange County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Martin County, IN, Miami County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Noble County, IN, Owen County, IN, Parke County, IN, Pike County, IN, Posey County, IN, Putnam County, IN, Steuben County, IN, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Vanderburgh County, IN, Vermillion County, IN, Vigo County, IN, Wabash County, IN, Warrick County, IN, Wells County, IN, Whitley County, IN, Branch County, MI, Calhoun County, MI, Hillsdale County, MI, Jackson County, MI, Defiance County, OH, Paulding County, OH, Williams County, OH

The radar

The Indianapolis radar (KIND), 43 km from the middle of the area, began a volume at 19:01 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, 7.0 hours before the alert went out and 171 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: 1311 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 79 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 30, 7:57 PM CST	Mesoscale Discussion	SPC	Adams, Brown, Calhoun, Cass, Fulton, Greene and 13 more	63 min
Mar 30, 8:17 PM CST	Severe Thunderstorm Watch	SPC	Adams, Bond, Brown, Calhoun, Cass, Clinton and 22 more	6 hr
Mar 30, 11:08 PM CST	Mesoscale Discussion	SPC	Henderson, Mercer, Rock Island, Warren	67 min
Mar 30, 11:23 PM CST	Severe Thunderstorm Watch	SPC	Champaign, Christian, Clark, Coles, Cumberland, DeWitt and 18 more	4 hr
Mar 31, 12:58 AM CST	Mesoscale Discussion	SPC	Bond, Champaign, Christian, Clark, Clay, Clinton and 46 more	92 min
Mar 31, 2:43 PM CST	Tornado Watch	SPC	Alexander, Clark, Clay, Clinton, Coles, Crawford and 30 more	6 hr
Mar 31, 4:03 PM CST	Mesoscale Discussion	SPC	Crawford, Lawrence	57 min
Mar 31, 1:32 PM CST	Tornado Watch	SPC	Adams, Allen, Blackford, Cass, DeKalb, Elkhart and 18 more	6 hr

Nearby

Mesoscale Discussions in Indiana, 2006 Mesoscale Discussions in Illinois, 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.