Alert archive / Michigan / Mesoscale Discussions in 2011

Mesoscale Discussion 2052

August 24, 201143 counties in Michigan

The Storm Prediction Center issued this mesoscale discussion at Aug 24, 2011, 8:25 PM EDT for 43 counties in Michigan. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued: Aug 24, 2011, 8:25 PM EDT (00:25 UTC)
Expired: Aug 24, 2011, 10:00 PM EDT
In force: 95 min
Issued by: the Storm Prediction Center

All 43 counties

Alcona County, MI, Allegan County, MI, Alpena County, MI, Arenac County, MI, Barry County, MI, Bay County, MI, Calhoun County, MI, Clare County, MI, Clinton County, MI, Eaton County, MI, Genesee County, MI, Gladwin County, MI, Gratiot 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, Monroe County, MI, Montcalm County, MI, Oakland County, MI, Ogemaw County, MI, Oscoda County, MI, Ottawa County, MI, Presque Isle County, MI, Roscommon County, MI, Saginaw County, MI, Saint Clair County, MI, Sanilac County, MI, Shiawassee County, MI, Tuscola County, MI, Van Buren County, MI, Washtenaw County, MI, Wayne County, MI

The radar

The Detroit radar (KDTX), 122 km from the middle of the area, began a volume at 00:28 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 00:00Z, 0.4 hours before the alert went out and 121 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: 3233 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1058 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 183 m²/s²
0-3 km storm-relative helicity: 297 m²/s²
Significant tornado parameter: 5.2
Supercell composite: 18.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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Nearby

Mesoscale Discussions in Michigan, 2011 Every mesoscale discussion in 2011

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.