Alert archive / Michigan / Mesoscale Discussions in 2017
Mesoscale Discussion 1005
The Storm Prediction Center issued this mesoscale discussion at Jun 12, 2017, 10:30 PM EDT for 35 counties in Michigan. It was in force for 90 min.
The area
The outline as issued.
The facts
- Issued
- Jun 12, 2017, 10:30 PM EDT (02:30 UTC)
- Expired
- Jun 13, 2017, 12:00 AM EDT
- In force
- 90 min
- Issued by
- the Storm Prediction Center
All 35 counties
Alcona County, MI, Arenac County, MI, Bay County, MI, Benzie County, MI, Clare County, MI, Clinton County, MI, Crawford County, MI, Gladwin County, MI, Grand Traverse County, MI, Gratiot County, MI, Huron County, MI, Ionia County, MI, Iosco County, MI, Isabella County, MI, Kalkaska County, MI, Kent County, MI, Lake County, MI, Manistee County, MI, Mason County, MI, Mecosta County, MI, Midland County, MI, Missaukee County, MI, Montcalm County, MI, Muskegon County, MI, Newaygo County, MI, Oceana County, MI, Ogemaw County, MI, Osceola County, MI, Oscoda County, MI, Ottawa County, MI, Roscommon County, MI, Saginaw County, MI, Shiawassee County, MI, Tuscola County, MI, Wexford County, MI
The radar
The Grand Rapids radar (KGRR), 102 km from the middle of the area, began a volume at 02:32 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, 2.5 hours before the alert went out and 159 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
- 827 J/kg
- Mixed-layer CIN
- -151 J/kg
- Mixed-layer LCL
- 1731 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 58 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 |
|---|---|---|---|---|
| Jun 12, 9:09 PM EDT | Severe Thunderstorm Watch | SPC | Alcona, Antrim, Arenac, Bay, Benzie, Charlevoix and 34 more | 5 hr |
| Jun 13, 12:58 AM EDT | Mesoscale Discussion | SPC | Alcona, Alpena, Crawford, Gladwin, Iosco, Montmorency and 3 more | 92 min |
Nearby
Mesoscale Discussions in Michigan, 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.