Alert archive / Michigan / Mesoscale Discussions in 2016
Mesoscale Discussion 1257
The Storm Prediction Center issued this mesoscale discussion at Jul 12, 2016, 4:20 PM EDT for 27 counties in Indiana; 36 counties in Michigan. It was in force for 85 min.
The area
The outline as issued.
The facts
- Issued
- Jul 12, 2016, 4:20 PM EDT (20:20 UTC)
- Expired
- Jul 12, 2016, 5:45 PM EDT
- In force
- 85 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 63 counties
Benton County, IN, Carroll County, IN, Cass County, IN, Clinton County, IN, DeKalb County, IN, Elkhart County, IN, Fulton County, IN, Howard County, IN, Jasper County, IN, Kosciusko County, IN, LaGrange County, IN, LaPorte County, IN, Marshall County, IN, Miami County, IN, Newton County, IN, Noble County, IN, Porter County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Steuben County, IN, Tippecanoe County, IN, Tipton County, IN, Wabash County, IN, Warren County, IN, White County, IN, Whitley County, IN, Allegan County, MI, Barry County, MI, Bay County, MI, Berrien County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Cheboygan County, MI, Clare County, MI, Clinton County, MI, Crawford County, MI, Eaton County, MI, Gladwin County, MI, Gratiot County, MI, Hillsdale County, MI, Ingham County, MI, Ionia County, MI, Isabella County, MI, Jackson County, MI, Kalamazoo County, MI, Kalkaska County, MI, Kent County, MI, Mecosta County, MI, Midland County, MI, Missaukee County, MI, Montcalm County, MI, Montmorency County, MI, Ogemaw County, MI, Osceola County, MI, Oscoda County, MI, Otsego County, MI, Roscommon County, MI, Saginaw County, MI, Saint Joseph County, MI, Shiawassee County, MI, Van Buren County, MI
The radar
The Grand Rapids radar (KGRR), 15 km from the middle of the area, began a volume at 20:21 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, 8.3 hours before the alert went out and 168 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.
- Mixed-layer CAPE
- 56 J/kg
- Mixed-layer CIN
- -161 J/kg
- Mixed-layer LCL
- 1160 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -65 m²/s²
- 0-3 km storm-relative helicity
- -20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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Mesoscale Discussions in Michigan, 2016Mesoscale Discussions in Indiana, 2016Every mesoscale discussion in 2016
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.