Alert archive / Michigan / Mesoscale Discussions in 2004
Mesoscale Discussion 1246
The Storm Prediction Center issued this mesoscale discussion at Jun 13, 2004, 3:01 PM EDT for 61 counties in Michigan. It was in force for 89 min.
The area
The outline as issued.
The facts
- Issued
- Jun 13, 2004, 3:01 PM EDT (19:01 UTC)
- Expired
- Jun 13, 2004, 4:30 PM EDT
- In force
- 89 min
- Issued by
- the Storm Prediction Center
All 61 counties
Alcona County, MI, Allegan County, MI, Alpena County, MI, Antrim County, MI, Arenac County, MI, Barry County, MI, Bay County, MI, Benzie County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Charlevoix County, MI, Cheboygan County, MI, Clare County, MI, Clinton County, MI, Crawford County, MI, Eaton County, MI, Emmet County, MI, Genesee County, MI, Gladwin County, MI, Grand Traverse County, MI, Gratiot County, MI, Hillsdale County, MI, Huron County, MI, Ingham County, MI, Ionia County, MI, Iosco County, MI, Isabella County, MI, Jackson County, MI, Kalamazoo County, MI, Kalkaska County, MI, Kent County, MI, Lake County, MI, Lapeer County, MI, Leelanau County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Mecosta County, MI, Midland County, MI, Missaukee County, MI, Monroe County, MI, Montcalm County, MI, Montmorency County, MI, Newaygo County, MI, Oakland County, MI, Ogemaw County, MI, Osceola County, MI, Oscoda County, MI, Otsego County, MI, Ottawa County, MI, Presque Isle 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, Wexford County, MI
The radar
The Detroit radar (KDTX), 94 km from the middle of the area, began a volume at 19:02 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, 7.0 hours before the alert went out and 94 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
- 37 J/kg
- Mixed-layer CIN
- -135 J/kg
- Mixed-layer LCL
- 673 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 42 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 |
|---|---|---|---|---|
| Jun 13, 8:29 AM EDT | Mesoscale Discussion | SPC | Dickinson, Iron | 91 min |
| Jun 13, 12:45 PM EDT | Mesoscale Discussion | SPC | Alger, Allegan, Antrim, Arenac, Barry, Bay and 57 more | 90 min |
| Jun 13, 1:00 PM EDT | Tornado Watch | SPC | Alcona, Allegan, Alpena, Antrim, Arenac, Barry and 55 more | 7 hr |
| Jun 13, 4:29 PM EDT | Mesoscale Discussion | SPC | Gogebic, Iron | 2 hr |
| Jun 13, 7:00 PM EDT | Severe Thunderstorm Watch | SPC | Monroe | 5 hr |
Nearby
Mesoscale Discussions in Michigan, 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.