Alert archive / Michigan / Mesoscale Discussions in 2007
Mesoscale Discussion 1862
The Storm Prediction Center issued this mesoscale discussion at Aug 23, 2007, 3:07 PM EDT for 19 counties in Indiana; 45 counties in Michigan; 10 counties in Ohio. It was in force for 83 min.
The area
The outline as issued.
The facts
- Issued
- Aug 23, 2007, 3:07 PM EDT (19:07 UTC)
- Expired
- Aug 23, 2007, 4:30 PM EDT
- In force
- 83 min
- Issued by
- the Storm Prediction Center
All 74 counties
Allen County, IN, Cass County, IN, DeKalb County, IN, Elkhart County, IN, Fulton County, IN, Huntington County, IN, Kosciusko County, IN, LaGrange County, IN, LaPorte County, IN, Marshall County, IN, Miami County, IN, Noble County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Steuben County, IN, Wabash County, IN, White County, IN, Whitley 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, Huron County, MI, Ingham County, MI, Ionia County, MI, Isabella County, MI, Jackson County, MI, Kalamazoo County, MI, Kent County, MI, Lake 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, Oceana County, MI, Osceola County, MI, Ottawa County, MI, Roscommon County, MI, Saginaw County, MI, Saint Joseph County, MI, Shiawassee County, MI, Tuscola County, MI, Van Buren County, MI, Washtenaw County, MI, Wayne County, MI, Defiance County, OH, Fulton County, OH, Hancock County, OH, Henry County, OH, Lucas County, OH, Paulding County, OH, Putnam County, OH, Van Wert County, OH, Williams County, OH, Wood County, OH
The radar
The Grand Rapids radar (KGRR), 59 km from the middle of the area, began a volume at 19:07 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, 7.1 hours before the alert went out and 118 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
- 1330 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 43 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 22, 8:21 PM EDT | Mesoscale Discussion | SPC | Jasper, Lake, LaPorte, Newton, Porter, Starke | 2 hr |
| Aug 23, 2:48 AM EDT | Mesoscale Discussion | SPC | DeKalb, LaGrange, Noble, Steuben, Whitley | 27 min |
| Aug 23, 11:36 AM EDT | Mesoscale Discussion | SPC | Lake | 114 min |
| Aug 23, 1:28 PM EDT | Severe Thunderstorm Watch | SPC | Benton, Jasper, Lake, Newton, Porter | 7 hr |
| Aug 23, 4:09 PM EDT | Severe Thunderstorm Watch | SPC | Allen, DeKalb, Elkhart, Fulton, Kosciusko, LaGrange and 8 more | 8 hr |
| Aug 23, 4:10 PM EDT | Mesoscale Discussion | SPC | Jasper, Lake, Newton | 95 min |
| Aug 23, 6:38 PM EDT | Mesoscale Discussion | SPC | DeKalb, Elkhart, Fulton, Jasper, Kosciusko, LaGrange and 11 more | 97 min |
| Aug 22, 8:19 PM EDT | Severe Thunderstorm Watch | SPC | Allegan, Barry, Clinton, Eaton, Genesee, Gratiot and 16 more | 4 hr |
| Aug 23, 12:01 AM EDT | Mesoscale Discussion | SPC | Clinton, Eaton, Genesee, Gratiot, Ingham, Lapeer and 8 more | 59 min |
| Aug 23, 11:17 AM EDT | Mesoscale Discussion | SPC | Carroll, Columbiana, Coshocton, Guernsey, Harrison, Holmes and 6 more | 88 min |
| Aug 23, 2:43 PM EDT | Severe Thunderstorm Watch | SPC | Ashland, Belmont, Carroll, Columbiana, Coshocton, Guernsey and 14 more | 6 hr |
| Aug 23, 5:30 PM EDT | Mesoscale Discussion | SPC | Belmont, Carroll, Columbiana, Coshocton, Guernsey, Harrison and 10 more | 60 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.