Alert archive / Indiana / Severe Thunderstorm Watches in 1997
Severe Thunderstorm Watch 738
The Storm Prediction Center issued this severe thunderstorm watch at Sep 19, 1997, 4:00 PM CDT for 22 counties in Illinois; 38 counties in Indiana. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 19, 1997, 4:00 PM CDT (21:00 UTC)
- Expired
- Sep 19, 1997, 9:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 60 counties
Bureau County, IL, Champaign County, IL, DeWitt County, IL, Ford County, IL, Grundy County, IL, Iroquois County, IL, Kankakee County, IL, LaSalle County, IL, Livingston County, IL, Logan County, IL, Marshall County, IL, Mason County, IL, McLean County, IL, Menard County, IL, Peoria County, IL, Piatt County, IL, Putnam County, IL, Stark County, IL, Tazewell County, IL, Vermilion County, IL, Will County, IL, Woodford County, IL, Adams County, IN, Allen County, IN, Benton County, IN, Blackford County, IN, Carroll County, IN, Cass County, IN, Clinton County, IN, DeKalb County, IN, Delaware County, IN, Elkhart County, IN, Fountain County, IN, Fulton County, IN, Grant County, IN, Howard County, IN, Huntington County, IN, Jasper County, IN, Jay County, IN, Kosciusko County, IN, LaGrange County, IN, Lake County, IN, LaPorte County, IN, Madison County, IN, Marshall County, IN, Miami County, IN, Newton County, IN, Noble County, IN, Porter County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Steuben County, IN, Tippecanoe County, IN, Tipton County, IN, Wabash County, IN, Warren County, IN, Wells County, IN, White County, IN, Whitley County, IN
The radar
The Chicago radar (KLOT), 73 km from the middle of the area, began a volume at 20:59 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
5 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 19, 6:50 PM CDT | Severe Thunderstorm Warning | LOT | Fulton | 25 min |
| Sep 19, 7:10 PM CDT | Severe Thunderstorm Warning | IND | Cass | 35 min |
| Sep 19, 7:23 PM CDT | Severe Thunderstorm Warning | IND | Miami | 22 min |
| Sep 19, 8:00 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt | 30 min |
| Sep 19, 8:17 PM CDT | Severe Thunderstorm Warning | ILX | McLean | 28 min |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 9.0 hours before the alert went out and 228 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
- 1652 J/kg
- Mixed-layer CIN
- -144 J/kg
- Mixed-layer LCL
- 825 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 366 m²/s²
- 0-3 km storm-relative helicity
- 366 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 18.7
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 19, 11:00 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 19 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Indiana, 1997Severe Thunderstorm Watches in Illinois, 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.