Alert archive / Michigan / Mesoscale Discussions in 2015

Mesoscale Discussion 940

June 8, 201527 counties in Michigan

The Storm Prediction Center issued this mesoscale discussion at Jun 8, 2015, 2:06 PM EDT for 27 counties in Michigan. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued: Jun 8, 2015, 2:06 PM EDT (18:06 UTC)
Expired: Jun 8, 2015, 4:00 PM EDT
In force: 114 min
Issued by: the Storm Prediction Center
Chance of a watch: 20%

All 27 counties

Alcona County, MI, Alpena County, MI, Arenac County, MI, Bay County, MI, Clare County, MI, Crawford County, MI, Genesee County, MI, Gladwin County, MI, Huron County, MI, Iosco County, MI, Kalkaska County, MI, Lapeer County, MI, Livingston County, MI, Macomb County, MI, Midland County, MI, Missaukee County, MI, Montmorency County, MI, Oakland County, MI, Ogemaw County, MI, Oscoda County, MI, Otsego County, MI, Roscommon County, MI, Saginaw County, MI, Saint Clair County, MI, Sanilac County, MI, Shiawassee County, MI, Tuscola County, MI

The radar

The Detroit radar (KDTX), 119 km from the middle of the area, began a volume at 18:07 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, 6.1 hours before the alert went out and 117 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: 117 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 580 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 84 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
Jun 8, 4:32 PM EDT	Mesoscale Discussion	SPC	Berrien, Cass, Saint Joseph, Van Buren	88 min

Nearby

Mesoscale Discussions in Michigan, 2015 Every mesoscale discussion in 2015

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.