Alert archive / Michigan / Mesoscale Discussions in 2010
Mesoscale Discussion 2001
The Storm Prediction Center issued this mesoscale discussion at Oct 26, 2010, 10:46 AM EDT for 21 counties in Michigan. It was in force for 59 min.
The area
The outline as issued.
The facts
- Issued
- Oct 26, 2010, 10:46 AM EDT (14:46 UTC)
- Expired
- Oct 26, 2010, 11:45 AM EDT
- In force
- 59 min
- Issued by
- the Storm Prediction Center
All 21 counties
Bay County, MI, Calhoun County, MI, Clinton County, MI, Eaton County, MI, Genesee County, MI, Gratiot County, MI, Huron County, MI, Ingham County, MI, Jackson County, MI, Lapeer County, MI, Livingston County, MI, Macomb County, MI, Midland County, MI, Oakland County, MI, Saginaw County, MI, Saint Clair County, MI, Sanilac County, MI, Shiawassee County, MI, Tuscola County, MI, Washtenaw County, MI, Wayne County, MI
The radar
The Detroit radar (KDTX), 55 km from the middle of the area, began a volume at 14:48 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 2.8 hours before the alert went out and 57 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
- 110 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 537 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 301 m²/s²
- 0-3 km storm-relative helicity
- 348 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
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 |
|---|---|---|---|---|
| Oct 26, 4:28 AM EDT | Tornado Watch | SPC | Allegan, Barry, Berrien, Calhoun, Cass, Clare and 20 more | 8 hr |
| Oct 26, 6:30 AM EDT | Mesoscale Discussion | SPC | Delta, Menominee | 60 min |
| Oct 26, 7:00 AM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 21 more | 2 hr |
| Oct 26, 8:55 AM EDT | Tornado Watch | SPC | Branch, Hillsdale | 7 hr |
| Oct 26, 11:04 AM EDT | Tornado Watch | SPC | Alcona, Allegan, Arenac, Barry, Bay, Benzie and 48 more | 4 hr |
Nearby
Mesoscale Discussions in Michigan, 2010Every mesoscale discussion in 2010
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.