Alert archive / Michigan / Mesoscale Discussions in 2003
Mesoscale Discussion 346
The Storm Prediction Center issued this mesoscale discussion at Mar 28, 2003, 12:54 PM EST for 36 counties in Michigan; Defiance County, Fulton County, Williams County, Ohio. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 28, 2003, 12:54 PM EST (17:54 UTC)
- Expired
- Mar 28, 2003, 3:00 PM EST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 39 counties
Arenac County, MI, Barry County, MI, Bay County, MI, Branch County, MI, Calhoun 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, Iosco County, MI, Isabella County, MI, Jackson County, MI, Kent County, MI, Lake County, MI, Lapeer County, MI, Lenawee County, MI, Livingston County, MI, Mecosta County, MI, Midland County, MI, Missaukee County, MI, Montcalm County, MI, Newaygo County, MI, Oakland County, MI, Ogemaw County, MI, Osceola County, MI, Oscoda County, MI, Roscommon County, MI, Saginaw County, MI, Shiawassee County, MI, Tuscola County, MI, Washtenaw County, MI, Defiance County, OH, Fulton County, OH, Williams County, OH
The radar
The Grand Rapids radar (KGRR), 94 km from the middle of the area, began a volume at 17:55 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, 5.9 hours before the alert went out and 98 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
- 1115 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 416 m²/s²
- 0-3 km storm-relative helicity
- 436 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
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 |
|---|---|---|---|---|
| Mar 28, 8:35 AM EST | Mesoscale Discussion | SPC | Berrien, Branch, Calhoun, Cass, Hillsdale, Kalamazoo and 1 more | 3 hr |
| Mar 28, 11:22 AM EST | Mesoscale Discussion | SPC | Allegan, Barry, Berrien, Cass, Kalamazoo, Saint Joseph and 1 more | 113 min |
| Mar 28, 1:20 PM EST | Severe Thunderstorm Watch | SPC | Arenac, Barry, Bay, Branch, Calhoun, Cass and 25 more | 6 hr |
| Mar 28, 3:57 PM EST | Mesoscale Discussion | SPC | Arenac, Barry, Bay, Branch, Calhoun, Clare and 28 more | 2 hr |
| Mar 28, 5:58 PM EST | Mesoscale Discussion | SPC | Arenac, Bay, Calhoun, Clinton, Eaton, Genesee and 21 more | 92 min |
| Mar 28, 6:00 PM EST | Severe Thunderstorm Watch | SPC | Genesee, Huron, Lapeer, Lenawee, Livingston, Macomb and 7 more | 4 hr |
| Mar 28, 2:20 PM EST | Severe Thunderstorm Watch | SPC | Darke, Mercer, Preble, Shelby | 6 hr |
| Mar 28, 4:30 PM EST | Mesoscale Discussion | SPC | Darke, Preble | 2 hr |
| Mar 28, 6:27 PM EST | Mesoscale Discussion | SPC | Darke, Preble | 93 min |
Nearby
Mesoscale Discussions in Michigan, 2003Mesoscale Discussions in Ohio, 2003Every mesoscale discussion in 2003
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.