Alert archive / Michigan / Mesoscale Discussions in 2012
Mesoscale Discussion 1205
The Storm Prediction Center issued this mesoscale discussion at Jun 18, 2012, 10:33 AM EDT for 19 counties in Michigan; Fulton County, Lucas County, Ohio. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 18, 2012, 10:33 AM EDT (14:33 UTC)
- Expired
- Jun 18, 2012, 1:00 PM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 21 counties
Branch County, MI, Calhoun County, MI, Eaton County, MI, Genesee County, MI, Hillsdale County, MI, Ingham County, MI, Jackson County, MI, Lapeer County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Monroe County, MI, Oakland County, MI, Saginaw County, MI, Saint Clair County, MI, Shiawassee County, MI, Tuscola County, MI, Washtenaw County, MI, Wayne County, MI, Fulton County, OH, Lucas County, OH
The radar
The Detroit radar (KDTX), 38 km from the middle of the area, began a volume at 14:34 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, 2.6 hours before the alert went out and 42 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
- 1525 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 99 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 |
|---|---|---|---|---|
| Jun 18, 12:40 PM EDT | Mesoscale Discussion | SPC | Delta, Menominee | 2 hr |
| Jun 18, 1:24 PM EDT | Severe Thunderstorm Watch | SPC | Delta, Dickinson, Iron, Menominee, Schoolcraft | 8 hr |
| Jun 18, 1:38 PM EDT | Mesoscale Discussion | SPC | Monroe | 67 min |
| Jun 18, 4:50 PM EDT | Mesoscale Discussion | SPC | Antrim, Benzie, Charlevoix, Cheboygan, Crawford, Emmet and 12 more | 85 min |
| Jun 18, 5:46 PM EDT | Severe Thunderstorm Watch | SPC | Alcona, Alpena, Antrim, Arenac, Benzie, Charlevoix and 25 more | 6 hr |
| Jun 18, 6:13 PM EDT | Mesoscale Discussion | SPC | Athens, Belmont, Gallia, Guernsey, Hocking, Meigs and 7 more | 92 min |
Nearby
Mesoscale Discussions in Michigan, 2012Mesoscale Discussions in Ohio, 2012Every mesoscale discussion in 2012
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.