Alert archive / Michigan / Tornado Watches in 2006

Tornado Watch 117

March 31, 200624 counties in Indiana; 32 counties in Michigan; 8 counties in Ohio

The Storm Prediction Center issued this tornado watch at Mar 31, 2006, 2:32 PM EST for 24 counties in Indiana; 32 counties in Michigan; 8 counties in Ohio. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Mar 31, 2006, 2:32 PM EST (19:32 UTC)
Expired: Mar 31, 2006, 8:35 PM EST
In force: 6 hr
Issued by: the Storm Prediction Center

All 64 counties

Adams County, IN, Allen County, IN, Blackford County, IN, Cass County, IN, DeKalb County, IN, Elkhart County, IN, Fulton County, IN, Grant County, IN, Huntington County, IN, Jay County, IN, Kosciusko County, IN, LaGrange County, IN, LaPorte County, IN, Marshall County, IN, Miami County, IN, Noble County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Steuben County, IN, Wabash County, IN, Wells County, IN, White County, IN, Whitley County, IN, 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, Huron County, MI, Ingham County, MI, Ionia County, MI, Jackson County, MI, Kalamazoo 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, Washtenaw County, MI, Wayne County, MI, Allen County, OH, Defiance County, OH, Fulton County, OH, Henry County, OH, Paulding County, OH, Putnam County, OH, Van Wert County, OH, Williams County, OH

The radar

The Grand Rapids radar (KGRR), 77 km from the middle of the area, began a volume at 19:33 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.

Warnings issued inside it

30 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Mar 31, 4:49 PM EST	Severe Thunderstorm Warning	DTX	Midland	26 min
Mar 31, 4:53 PM EST	Severe Thunderstorm Warning	DTX	Saginaw	67 min
Mar 31, 4:56 PM EST	Severe Thunderstorm Warning	DTX	Bay	46 min
Mar 31, 4:56 PM EST	Severe Thunderstorm Warning	IWX	Branch	34 min
Mar 31, 5:01 PM EST	Severe Thunderstorm Warning	GRR	Calhoun	43 min
Mar 31, 5:03 PM EST	Severe Thunderstorm Warning	DTX	Livingston	27 min
Mar 31, 5:23 PM EST	Severe Thunderstorm Warning	DTX	Genesee	48 min
Mar 31, 5:42 PM EST	Severe Thunderstorm Warning	IWX	Cass, Miami	33 min
Mar 31, 5:45 PM EST	Severe Thunderstorm Warning	DTX	Livingston	45 min
Mar 31, 5:54 PM EST	Severe Thunderstorm Warning	DTX	Tuscola	34 min
Mar 31, 5:58 PM EST	Severe Thunderstorm Warning	DTX	Lapeer	62 min
Mar 31, 6:02 PM EST	Severe Thunderstorm Warning	DTX	Saginaw	13 min
Mar 31, 6:04 PM EST	Severe Thunderstorm Warning	IWX	Wabash	26 min
Mar 31, 6:16 PM EST	Severe Thunderstorm Warning	DTX	Oakland	32 min
Mar 31, 6:20 PM EST	Severe Thunderstorm Warning	DTX	Lenawee	16 min
Mar 31, 6:31 PM EST	Severe Thunderstorm Warning	IWX	Grant	44 min
Mar 31, 6:33 PM EST	Severe Thunderstorm Warning	IWX	Huntington	27 min
Mar 31, 6:34 PM EST	Severe Thunderstorm Warning	DTX	Washtenaw	56 min
Mar 31, 6:35 PM EST	Severe Thunderstorm Warning	IWX	Blackford, Grant	55 min
Mar 31, 6:48 PM EST	Severe Thunderstorm Warning	DTX	Sanilac	27 min
Mar 31, 6:57 PM EST	Severe Thunderstorm Warning	IWX	Adams, Wells	33 min
Mar 31, 7:05 PM EST	Severe Thunderstorm Warning	IWX	Defiance, Henry, Paulding, Putnam	55 min
Mar 31, 7:09 PM EST	Severe Thunderstorm Warning	DTX	Wayne	66 min
Mar 31, 7:15 PM EST	Severe Thunderstorm Warning	DTX	Lenawee	31 min
Mar 31, 7:24 PM EST	Severe Thunderstorm Warning	DTX	Monroe	52 min
Mar 31, 7:25 PM EST	Severe Thunderstorm Warning	IWX	Adams	35 min
Mar 31, 7:25 PM EST	Severe Thunderstorm Warning	DTX	Macomb	44 min
Mar 31, 7:27 PM EST	Severe Thunderstorm Warning	DTX	Saint Clair	63 min
Mar 31, 7:29 PM EST	Severe Thunderstorm Warning	IWX	Jay	31 min
Mar 31, 7:45 PM EST	Severe Thunderstorm Warning	IWX	Allen, Putnam, Van Wert	23 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 7.5 hours before the alert went out and 147 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: 1600 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 227 m²/s²
0-3 km storm-relative helicity: 232 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 31, 1:58 AM EST	Mesoscale Discussion	SPC	Benton, Boone, Carroll, Cass, Clay, Clinton and 22 more	92 min
Mar 31, 1:57 PM EST	Mesoscale Discussion	SPC	Adams, Allen, Blackford, Boone, Brown, Carroll and 46 more	2 hr
Mar 31, 3:43 PM EST	Tornado Watch	SPC	Bartholomew, Boone, Brown, Carroll, Clay, Clinton and 43 more	6 hr
Mar 31, 5:03 PM EST	Mesoscale Discussion	SPC	Adams, Allen, Blackford, Boone, Carroll, Cass and 32 more	57 min

Nearby

Tornado Watches in Michigan, 2006 Tornado Watches in Indiana, 2006 Tornado Watches in Ohio, 2006 Every tornado watch 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.