Alert archive / Michigan / Mesoscale Discussions in 2003
Mesoscale Discussion 1531
The Storm Prediction Center issued this mesoscale discussion at Jun 28, 2003, 11:19 AM EST for 4 counties in Indiana; 35 counties in Michigan. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 28, 2003, 11:19 AM EST (16:19 UTC)
- Expired
- Jun 28, 2003, 1:45 PM EST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 39 counties
Elkhart County, IN, LaGrange County, IN, Saint Joseph County, IN, Steuben County, IN, Allegan 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, Gladwin County, MI, Gratiot County, MI, Ingham County, MI, Ionia County, MI, Isabella County, MI, Kalamazoo County, MI, Kent County, MI, Lake County, MI, Mason County, MI, Mecosta County, MI, Midland County, MI, Missaukee County, MI, Montcalm County, MI, Muskegon County, MI, Newaygo County, MI, Oceana County, MI, Ogemaw County, MI, Osceola County, MI, Ottawa County, MI, Roscommon County, MI, Saginaw County, MI, Saint Joseph County, MI, Shiawassee County, MI, Van Buren County, MI, Wexford County, MI
The radar
The Grand Rapids radar (KGRR), 21 km from the middle of the area, began a volume at 16:21 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, 4.3 hours before the alert went out and 193 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
- 70 J/kg
- Mixed-layer CIN
- -119 J/kg
- Mixed-layer LCL
- 1302 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 63 m²/s²
- 0-3 km storm-relative helicity
- 96 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 28, 1:36 PM EST | Mesoscale Discussion | SPC | Elkhart, Fulton, Jasper, Kosciusko, LaGrange, Lake and 9 more | 2 hr |
| Jun 28, 11:40 AM EST | Severe Thunderstorm Watch | SPC | Allegan, Arenac, Barry, Bay, Calhoun, Clare and 31 more | 6 hr |
| Jun 28, 2:18 PM EST | Mesoscale Discussion | SPC | Allegan, Arenac, Barry, Bay, Calhoun, Clare and 31 more | 117 min |
Nearby
Mesoscale Discussions in Michigan, 2003Mesoscale Discussions in Indiana, 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.