Alert archive / Michigan / Mesoscale Discussions in 2004
Mesoscale Discussion 2128
The Storm Prediction Center issued this mesoscale discussion at Aug 27, 2004, 4:36 AM CDT for 17 counties in Illinois; 9 counties in Indiana; 42 counties in Michigan. It was in force for 84 min.
The area
The outline as issued.
The facts
- Issued
- Aug 27, 2004, 4:36 AM CDT (09:36 UTC)
- Expired
- Aug 27, 2004, 6:00 AM CDT
- In force
- 84 min
- Issued by
- the Storm Prediction Center
All 68 counties
Cook County, IL, DeWitt County, IL, Ford County, IL, Fulton County, IL, Grundy County, IL, Hancock County, IL, Iroquois County, IL, Kankakee County, IL, Livingston County, IL, Mason County, IL, McDonough County, IL, McLean County, IL, Peoria County, IL, Schuyler County, IL, Tazewell County, IL, Will County, IL, Woodford County, IL, Benton County, IN, Jasper County, IN, Lake County, IN, LaPorte County, IN, Newton County, IN, Porter County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Allegan County, MI, Arenac County, MI, Barry County, MI, Bay County, MI, Berrien County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Clare County, MI, Clinton County, MI, Eaton County, MI, Genesee County, MI, Gladwin 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, Mecosta County, MI, Midland County, MI, Monroe County, MI, Montcalm County, MI, Muskegon County, MI, Newaygo County, MI, Oakland County, MI, Osceola County, MI, Ottawa County, MI, Saginaw County, MI, Saint Clair County, MI, Sanilac County, MI, Shiawassee County, MI, Tuscola County, MI, Van Buren County, MI, Washtenaw County, MI, Wayne County, MI
The radar
The Northern Indiana radar (KIWX), 110 km from the middle of the area, began a volume at 09:39 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 00:00Z, 9.6 hours before the alert went out and 288 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
- 636 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 918 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 157 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
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 26, 9:13 PM CDT | Mesoscale Discussion | SPC | Carroll, Jo Daviess, Rock Island, Stephenson | 62 min |
| Aug 26, 9:45 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Carroll, Henderson, Henry, Jo Daviess, Mercer and 5 more | 6 hr |
| Aug 26, 11:53 PM CDT | Mesoscale Discussion | SPC | Bureau, Cook, DeKalb, DuPage, Grundy, Kane and 8 more | 97 min |
| Aug 27, 1:25 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Cook, DeKalb, DeWitt, DuPage and 25 more | 6 hr |
| Aug 27, 1:49 AM CDT | Mesoscale Discussion | SPC | Henderson, Henry, Mercer, Ogle, Rock Island, Whiteside and 1 more | 56 min |
| Aug 27, 6:33 AM CDT | Mesoscale Discussion | SPC | Champaign, DeWitt, Ford, Iroquois, McLean, Mason and 4 more | 27 min |
| Aug 27, 9:24 AM CDT | Mesoscale Discussion | SPC | Calhoun, Greene, Jersey, Macoupin, Madison, Morgan and 2 more | 96 min |
| Aug 27, 9:40 AM CDT | Severe Thunderstorm Watch | SPC | Brown, Calhoun, Cass, Greene, Jersey, Macoupin and 7 more | 5 hr |
| Aug 27, 1:07 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Greene, Jersey and 6 more | 113 min |
| Aug 27, 2:45 PM CDT | Severe Thunderstorm Watch | SPC | Calhoun, Cass, Greene, Jersey, Morgan, Pike and 1 more | 6 hr |
| Aug 27, 3:49 PM CDT | Mesoscale Discussion | SPC | Calhoun, Cass, Greene, Jersey, Morgan, Pike and 1 more | 86 min |
| Aug 27, 4:10 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Bureau, Fulton, Hancock, Henderson and 14 more | 2 hr |
| Aug 27, 12:10 PM CDT | Mesoscale Discussion | SPC | Adams, Allen, Blackford, Carroll, Cass, DeKalb and 8 more | 3 hr |
| Aug 27, 1:39 AM CDT | Mesoscale Discussion | SPC | Antrim, Arenac, Benzie, Cheboygan, Clare, Crawford and 15 more | 66 min |
| Aug 27, 12:39 PM CDT | Mesoscale Discussion | SPC | Barry, Bay, Calhoun, Clinton, Eaton, Genesee and 23 more | 2 hr |
Nearby
Mesoscale Discussions in Michigan, 2004Mesoscale Discussions in Illinois, 2004Mesoscale Discussions in Indiana, 2004Every mesoscale discussion in 2004
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.