Alert archive / Michigan / Severe Thunderstorm Watches in 1997
Severe Thunderstorm Watch 737
The Storm Prediction Center issued this severe thunderstorm watch at Sep 19, 1997, 3:15 PM EDT for 30 counties in Michigan. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 19, 1997, 3:15 PM EDT (19:15 UTC)
- Expired
- Sep 19, 1997, 9:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 30 counties
Allegan County, MI, Barry County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Clinton County, MI, Eaton County, MI, Genesee County, MI, Gratiot County, MI, Hillsdale County, MI, Ingham County, MI, Ionia County, MI, Jackson County, MI, Kalamazoo County, MI, Kent County, MI, Lapeer County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Monroe County, MI, Montcalm County, MI, Muskegon County, MI, Oakland County, MI, Ottawa County, MI, Saginaw County, MI, Saint Joseph County, MI, Shiawassee County, MI, Van Buren County, MI, Washtenaw County, MI, Wayne County, MI
The radar
The Grand Rapids radar (KGRR), 35 km from the middle of the area, began a volume at 19:14 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
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 19, 3:50 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Van Buren | 45 min |
| Sep 19, 3:53 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Van Buren | 42 min |
| Sep 19, 4:42 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Eaton | 38 min |
| Sep 19, 4:44 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Saginaw | 31 min |
| Sep 19, 5:02 PM EDT | Severe Thunderstorm Warning | GRR | Ingham, Jackson | 28 min |
| Sep 19, 5:36 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Washtenaw | 39 min |
| Sep 19, 5:55 PM EDT | Severe Thunderstorm Warning | DTX | Oakland, Wayne | 65 min |
| Sep 19, 6:32 PM EDT | Flash Flood Warning | DTX | Macomb, Oakland, Wayne | 118 min |
| Sep 19, 6:32 PM EDT | Flash Flood Warning | DTX | Livingston | 118 min |
| Sep 19, 6:40 PM EDT | Severe Thunderstorm Warning | DTX | Monroe | 50 min |
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 7.3 hours before the alert went out and 140 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
- 1487 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 148 m²/s²
- 0-3 km storm-relative helicity
- 153 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 18, 8:30 PM EDT | Severe Thunderstorm Watch | SPC | Alger, Baraga, Charlevoix, Cheboygan, Chippewa, Delta and 11 more | 7 hr |
| Sep 19, 1:00 AM EDT | Severe Thunderstorm Watch | SPC | Alger, Charlevoix, Chippewa, Delta, Dickinson, Iron and 4 more | 6 hr |
Nearby
Severe Thunderstorm Watches in Michigan, 1997Every severe thunderstorm watch in 1997
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.