Alert archive / Michigan / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 180
The Storm Prediction Center issued this severe thunderstorm watch at Apr 23, 2001, 3:30 PM EST for 8 counties in Indiana; 17 counties in Michigan; 13 counties in Ohio. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 23, 2001, 3:30 PM EST (20:30 UTC)
- Expired
- Apr 23, 2001, 9:00 PM EST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 38 counties
Adams County, IN, Allen County, IN, Blackford County, IN, DeKalb County, IN, Grant County, IN, Huntington County, IN, Steuben County, IN, Wells County, IN, Genesee County, MI, Hillsdale County, MI, Ingham County, MI, Jackson County, MI, Lapeer County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Monroe County, MI, Oakland County, MI, Saginaw County, MI, Saint Clair County, MI, Sanilac County, MI, Shiawassee County, MI, Tuscola County, MI, Washtenaw County, MI, Wayne County, MI, Allen County, OH, Auglaize County, OH, Defiance County, OH, Fulton County, OH, Hancock County, OH, Henry County, OH, Lucas County, OH, Mercer County, OH, Paulding County, OH, Putnam County, OH, Van Wert County, OH, Williams County, OH, Wood County, OH
The radar
The Northern Indiana radar (KIWX), 122 km from the middle of the area, began a volume at 20:33 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
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 3:38 PM EST | Severe Thunderstorm Warning | GRR | Ingham | 22 min |
| Apr 23, 3:45 PM EST | Severe Thunderstorm Warning | DTX | Shiawassee | 45 min |
| Apr 23, 3:55 PM EST | Severe Thunderstorm Warning | DTX | Saginaw | 50 min |
| Apr 23, 4:08 PM EST | Severe Thunderstorm Warning | DTX | Genesee | 37 min |
| Apr 23, 4:20 PM EST | Severe Thunderstorm Warning | DTX | Tuscola | 40 min |
| Apr 23, 4:36 PM EST | Severe Thunderstorm Warning | DTX | Lapeer | 39 min |
| Apr 23, 5:39 PM EST | Severe Thunderstorm Warning | DTX | Oakland, Washtenaw, Wayne | 51 min |
| Apr 23, 6:15 PM EST | Severe Thunderstorm Warning | DTX | Macomb | 45 min |
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 8.5 hours before the alert went out and 131 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
- 1107 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 168 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Apr 23, 12:30 PM EST | Tornado Watch | SPC | Baraga, Dickinson, Gogebic, Iron, Marquette, Menominee and 1 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Michigan, 2001Severe Thunderstorm Watches in Ohio, 2001Severe Thunderstorm Watches in Indiana, 2001Every severe thunderstorm watch in 2001
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.