Alert archive / Michigan / Mesoscale Discussions in 2017
Mesoscale Discussion 1302
The Storm Prediction Center issued this mesoscale discussion at Jul 13, 2017, 3:19 AM EDT for DeKalb County, LaGrange County, Steuben County, Indiana; 39 counties in Michigan; 17 counties in Ohio. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 13, 2017, 3:19 AM EDT (07:19 UTC)
- Expired
- Jul 13, 2017, 6:15 AM EDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 59 counties
DeKalb County, IN, LaGrange County, IN, Steuben County, IN, Arenac County, MI, Barry County, MI, Bay County, MI, Branch County, MI, Calhoun 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, 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, Newaygo County, MI, Oakland County, MI, Osceola County, MI, Ottawa 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, Crawford County, OH, Defiance County, OH, Erie County, OH, Fulton County, OH, Hancock County, OH, Henry County, OH, Huron County, OH, Lorain County, OH, Lucas County, OH, Ottawa County, OH, Paulding County, OH, Putnam County, OH, Sandusky County, OH, Seneca County, OH, Williams County, OH, Wood County, OH, Wyandot County, OH
The radar
The Detroit radar (KDTX), 50 km from the middle of the area, began a volume at 07:20 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, 7.3 hours before the alert went out and 54 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
- 885 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 822 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 196 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 10:36 PM EDT | Mesoscale Discussion | SPC | Benzie, Manistee, Mason | 84 min |
Nearby
Mesoscale Discussions in Michigan, 2017Mesoscale Discussions in Ohio, 2017Mesoscale Discussions in Indiana, 2017Every mesoscale discussion in 2017
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.