Alert archive / Michigan / Mesoscale Discussions in 2008
Mesoscale Discussion 1669
The Storm Prediction Center issued this mesoscale discussion at Jul 2, 2008, 6:42 PM EDT for 26 counties in Michigan. It was in force for 63 min.
The area
The outline as issued.
The facts
- Issued
- Jul 2, 2008, 6:42 PM EDT (22:42 UTC)
- Expired
- Jul 2, 2008, 7:45 PM EDT
- In force
- 63 min
- Issued by
- the Storm Prediction Center
All 26 counties
Alcona County, MI, Alpena County, MI, Antrim County, MI, Arenac County, MI, Bay County, MI, Cheboygan County, MI, Crawford County, MI, Genesee County, MI, Gladwin County, MI, Grand Traverse County, MI, Huron County, MI, Iosco County, MI, Kalkaska County, MI, Lapeer County, MI, Missaukee County, MI, Montmorency County, MI, Ogemaw County, MI, Oscoda County, MI, Otsego County, MI, Presque Isle County, MI, Roscommon County, MI, Saginaw County, MI, Sanilac County, MI, Shiawassee County, MI, Tuscola County, MI, Wexford County, MI
The radar
The NCL Michigan radar (KAPX), 130 km from the middle of the area, began a volume at 22:42 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, 10.7 hours before the alert went out and 145 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
- 1681 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 97 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 |
|---|---|---|---|---|
| Jul 2, 12:04 AM EDT | Mesoscale Discussion | SPC | Gogebic, Houghton, Keweenaw, Ontonagon | 86 min |
| Jul 2, 10:42 AM EDT | Mesoscale Discussion | SPC | Allegan, Benzie, Berrien, Grand Traverse, Kent, Lake and 11 more | 2 hr |
| Jul 2, 11:09 AM EDT | Severe Thunderstorm Watch | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 22 more | 5 hr |
| Jul 2, 1:18 PM EDT | Severe Thunderstorm Watch | SPC | Alcona, Alpena, Antrim, Arenac, Bay, Benzie and 26 more | 6 hr |
| Jul 2, 2:55 PM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Berrien, Cass, Eaton, Ionia and 13 more | 95 min |
| Jul 2, 4:08 PM EDT | Severe Thunderstorm Watch | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 30 more | 7 hr |
| Jul 2, 4:50 PM EDT | Mesoscale Discussion | SPC | Alcona, Alpena, Antrim, Arenac, Bay, Clare and 16 more | 85 min |
Nearby
Mesoscale Discussions in Michigan, 2008Every mesoscale discussion in 2008
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.