Alert archive / Michigan / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 601
The Storm Prediction Center issued this severe thunderstorm watch at Jun 28, 2003, 12:40 PM EDT for 37 counties in Michigan. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 28, 2003, 12:40 PM EDT (16:40 UTC)
- Expired
- Jun 28, 2003, 7:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 37 counties
Allegan County, MI, Arenac County, MI, Barry County, MI, Bay County, MI, Calhoun County, MI, Clare County, MI, Clinton County, MI, Eaton County, MI, Genesee County, MI, Gladwin County, MI, Gratiot 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, Livingston County, MI, Macomb County, MI, Mecosta County, MI, Midland County, MI, Montcalm 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 Grand Rapids radar (KGRR), 81 km from the middle of the area, began a volume at 16:41 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.
Warnings issued inside it
12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 12:54 PM EDT | Severe Thunderstorm Warning | GRR | Kent, Montcalm | 51 min |
| Jun 28, 1:52 PM EDT | Severe Thunderstorm Warning | GRR | Isabella, Mecosta | 38 min |
| Jun 28, 3:03 PM EDT | Tornado Warning | APX | Gladwin | 42 min |
| Jun 28, 3:12 PM EDT | Severe Thunderstorm Warning | GRR | Isabella | 48 min |
| Jun 28, 3:29 PM EDT | Severe Thunderstorm Warning | DTX | Midland | 46 min |
| Jun 28, 3:31 PM EDT | Severe Thunderstorm Warning | GRR | Kalamazoo, Van Buren | 59 min |
| Jun 28, 4:31 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Kalamazoo | 59 min |
| Jun 28, 5:28 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Jackson | 62 min |
| Jun 28, 5:51 PM EDT | Tornado Warning | GRR | Jackson | 39 min |
| Jun 28, 6:03 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 57 min |
| Jun 28, 6:17 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Shiawassee | 43 min |
| Jun 28, 6:59 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 46 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 4.7 hours before the alert went out and 136 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
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 12:19 PM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Bay, Berrien, Branch, Calhoun and 29 more | 2 hr |
| Jun 28, 3:18 PM EDT | Mesoscale Discussion | SPC | Allegan, Arenac, Barry, Bay, Calhoun, Clare and 31 more | 117 min |
Nearby
Severe Thunderstorm Watches in Michigan, 2003Every severe thunderstorm watch 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.