Alert archive / Michigan / Mesoscale Discussions in 2007
Mesoscale Discussion 1919
The Storm Prediction Center issued this mesoscale discussion at Aug 29, 2007, 2:23 PM EDT for 5 counties in Indiana; 27 counties in Michigan; Fulton County, Williams County, Ohio. It was in force for 67 min.
The area
The outline as issued.
The facts
- Issued
- Aug 29, 2007, 2:23 PM EDT (18:23 UTC)
- Expired
- Aug 29, 2007, 3:30 PM EDT
- In force
- 67 min
- Issued by
- the Storm Prediction Center
All 34 counties
Elkhart County, IN, LaGrange County, IN, Noble County, IN, Saint Joseph County, IN, Steuben County, IN, Barry County, MI, Bay County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Clinton County, MI, Eaton County, MI, Genesee County, MI, Hillsdale County, MI, Huron County, MI, Ingham County, MI, Jackson County, MI, Kalamazoo 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, Saint Joseph County, MI, Sanilac County, MI, Shiawassee County, MI, Tuscola County, MI, Washtenaw County, MI, Wayne County, MI, Fulton County, OH, Williams County, OH
The radar
The Detroit radar (KDTX), 79 km from the middle of the area, began a volume at 18:25 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, 6.4 hours before the alert went out and 83 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
- 227 J/kg
- Mixed-layer CIN
- -187 J/kg
- Mixed-layer LCL
- 1427 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 57 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 |
|---|---|---|---|---|
| Aug 29, 3:02 PM EDT | Severe Thunderstorm Watch | SPC | Barry, Calhoun, Clinton, Eaton, Genesee, Huron and 17 more | 5 hr |
| Aug 29, 7:28 PM EDT | Mesoscale Discussion | SPC | Lapeer, Macomb, Monroe, Oakland, Saint Clair, Sanilac and 2 more | 92 min |
Nearby
Mesoscale Discussions in Michigan, 2007Mesoscale Discussions in Indiana, 2007Mesoscale Discussions in Ohio, 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.