Alert archive / Michigan / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 574
The Storm Prediction Center issued this severe thunderstorm watch at Aug 4, 2002, 3:55 PM EDT for 21 counties in Michigan. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 4, 2002, 3:55 PM EDT (19:55 UTC)
- Expired
- Aug 4, 2002, 8:00 PM EDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 21 counties
Barry County, MI, Branch County, MI, Calhoun County, MI, Clinton County, MI, Eaton County, MI, Genesee County, MI, Hillsdale County, MI, Ingham County, MI, Jackson County, MI, Kalamazoo County, MI, Lapeer County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Monroe County, MI, Oakland County, MI, Saint Clair County, MI, Saint Joseph County, MI, Shiawassee County, MI, Washtenaw County, MI, Wayne County, MI
The radar
The Detroit radar (KDTX), 93 km from the middle of the area, began a volume at 19:55 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.
Warnings issued inside it
6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 4:11 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun | 49 min |
| Aug 4, 4:57 PM EDT | Severe Thunderstorm Warning | GRR | Jackson | 48 min |
| Aug 4, 5:06 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 39 min |
| Aug 4, 5:17 PM EDT | Severe Thunderstorm Warning | IWX | Hillsdale | 58 min |
| Aug 4, 5:38 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 52 min |
| Aug 4, 5:59 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 61 min |
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 7.9 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
- 494 J/kg
- Mixed-layer CIN
- -151 J/kg
- Mixed-layer LCL
- 1185 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 165 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
Nearby
Severe Thunderstorm Watches in Michigan, 2002Every severe thunderstorm watch in 2002
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.