Alert archive / Michigan / Mesoscale Discussions in 2015
Mesoscale Discussion 1592
The Storm Prediction Center issued this mesoscale discussion at Aug 2, 2015, 8:02 PM CDT for Cook County, Lake County, Illinois; 36 counties in Michigan; 4 counties in Wisconsin. It was in force for 118 min.
The area
The outline as issued.
The facts
- Issued
- Aug 2, 2015, 8:02 PM CDT (01:02 UTC)
- Expired
- Aug 2, 2015, 10:00 PM CDT
- In force
- 118 min
- Issued by
- the Storm Prediction Center
All 42 counties
Cook County, IL, Lake County, IL, Allegan County, MI, Barry County, MI, Bay County, MI, Berrien County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Clinton County, MI, Eaton County, MI, Genesee County, MI, Gratiot County, MI, Hillsdale County, MI, Ingham County, MI, Ionia County, MI, Isabella County, MI, Jackson County, MI, Kalamazoo County, MI, Kent County, MI, Lapeer County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Midland County, MI, Monroe County, MI, Montcalm County, MI, Muskegon County, MI, Oakland County, MI, Ottawa County, MI, Saginaw County, MI, Saint Clair County, MI, Saint Joseph County, MI, Shiawassee County, MI, Tuscola County, MI, Van Buren County, MI, Washtenaw County, MI, Wayne County, MI, Kenosha County, WI, Milwaukee County, WI, Racine County, WI, Waukesha County, WI
The radar
The Grand Rapids radar (KGRR), 47 km from the middle of the area, began a volume at 01:04 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 00:00Z, 1.0 hours before the alert went out and 137 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
- 1330 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 1772 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 192 m²/s²
- 0-3 km storm-relative helicity
- 339 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 12.1
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 2, 8:30 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 24 more | 5 hr |
| Aug 2, 11:19 PM CDT | Mesoscale Discussion | SPC | Ford, Grundy, Iroquois, Kankakee, Will | 86 min |
Nearby
Mesoscale Discussions in Michigan, 2015Mesoscale Discussions in Wisconsin, 2015Mesoscale Discussions in Illinois, 2015Every mesoscale discussion in 2015
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.