Alert archive / Michigan / Mesoscale Discussions in 2008

Mesoscale Discussion 1279

June 8, 20088 counties in Indiana; 41 counties in Michigan

The Storm Prediction Center issued this mesoscale discussion at Jun 8, 2008, 1:44 PM EDT for 8 counties in Indiana; 41 counties in Michigan. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued: Jun 8, 2008, 1:44 PM EDT (17:44 UTC)
Expired: Jun 8, 2008, 3:15 PM EDT
In force: 91 min
Issued by: the Storm Prediction Center

All 49 counties

Elkhart County, IN, LaGrange County, IN, LaPorte County, IN, Marshall County, IN, Porter County, IN, Saint Joseph County, IN, Starke County, IN, Steuben County, IN, Alcona County, MI, Alpena County, MI, Arenac County, MI, Barry County, MI, Bay County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Clare County, MI, Clinton County, MI, Eaton County, MI, Genesee County, MI, Gladwin County, MI, Gratiot County, MI, Hillsdale County, MI, Huron County, MI, Ingham County, MI, Ionia County, MI, Iosco 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, Mecosta County, MI, Midland County, MI, Montcalm County, MI, Oakland County, MI, Ogemaw County, MI, Oscoda County, MI, Roscommon County, MI, Saginaw County, MI, Saint Joseph County, MI, Sanilac County, MI, Shiawassee County, MI, Tuscola County, MI, Washtenaw County, MI, Wayne County, MI

The radar

The Grand Rapids radar (KGRR), 84 km from the middle of the area, began a volume at 17:47 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 12:00Z, 5.7 hours before the alert went out and 104 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: 538 J/kg
Mixed-layer CIN: -257 J/kg
Mixed-layer LCL: 1230 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 205 m²/s²
0-3 km storm-relative helicity: 219 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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
Jun 8, 10:47 AM EDT	Severe Thunderstorm Watch	SPC	Jasper, Lake, Newton, Porter	5 hr
Jun 8, 12:57 PM EDT	Severe Thunderstorm Watch	SPC	DeKalb, Elkhart, Kosciusko, LaGrange, LaPorte, Marshall and 4 more	5 hr
Jun 8, 3:04 PM EDT	Mesoscale Discussion	SPC	Elkhart, Jasper, Kosciusko, LaGrange, Lake, LaPorte and 6 more	116 min
Jun 7, 9:57 PM EDT	Mesoscale Discussion	SPC	Allegan, Barry, Calhoun, Eaton, Ingham, Ionia and 5 more	63 min

Nearby

Mesoscale Discussions in Michigan, 2008 Mesoscale Discussions in Indiana, 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.