Alert archive / Michigan / Mesoscale Discussions in 2007
Mesoscale Discussion 2177
The Storm Prediction Center issued this mesoscale discussion at Dec 1, 2007, 11:47 PM EST for 35 counties in Michigan; Cook County, Lake County, Saint Louis County, Minnesota. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 1, 2007, 11:47 PM EST (04:47 UTC)
- Expired
- Dec 2, 2007, 2:45 AM EST
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
All 38 counties
Alcona County, MI, Alger County, MI, Alpena County, MI, Antrim County, MI, Arenac County, MI, Baraga County, MI, Bay County, MI, Charlevoix County, MI, Cheboygan County, MI, Chippewa County, MI, Crawford County, MI, Delta County, MI, Dickinson County, MI, Emmet County, MI, Gladwin County, MI, Grand Traverse County, MI, Houghton County, MI, Huron County, MI, Iosco County, MI, Kalkaska County, MI, Keweenaw County, MI, Leelanau County, MI, Luce County, MI, Mackinac County, MI, Marquette County, MI, Missaukee County, MI, Montmorency County, MI, Ogemaw County, MI, Ontonagon County, MI, Oscoda County, MI, Otsego County, MI, Presque Isle County, MI, Roscommon County, MI, Schoolcraft County, MI, Tuscola County, MI, Cook County, MN, Lake County, MN, Saint Louis County, MN
The radar
The Marquette radar (KMQT), 73 km from the middle of the area, began a volume at 04:44 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, 4.8 hours before the alert went out and 466 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 633 m above ground
- 0-6 km bulk shear
- 87 kt
- 0-1 km storm-relative helicity
- 200 m²/s²
- 0-3 km storm-relative helicity
- 707 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 1, 7:21 PM EST | Mesoscale Discussion | SPC | Allegan, Barry, Bay, Benzie, Berrien, Branch and 42 more | 5 hr |
| Dec 2, 1:13 AM EST | Mesoscale Discussion | SPC | Branch, Calhoun, Clinton, Eaton, Genesee, Hillsdale and 12 more | 4 hr |
Nearby
Mesoscale Discussions in Michigan, 2007Mesoscale Discussions in Minnesota, 2007Every mesoscale discussion in 2007
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.