Alert archive / South Dakota / Severe Thunderstorm Watches in 1997
Severe Thunderstorm Watch 615
The Storm Prediction Center issued this severe thunderstorm watch at Jul 16, 1997, 7:30 PM CDT for 39 counties in South Dakota. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 16, 1997, 7:30 PM CDT (00:30 UTC)
- Expired
- Jul 17, 1997, 1:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 39 counties
Aurora County, SD, Beadle County, SD, Brookings County, SD, Brown County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Clark County, SD, Codington County, SD, Davison County, SD, Day County, SD, Deuel County, SD, Douglas County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Gregory County, SD, Hamlin County, SD, Hand County, SD, Hanson County, SD, Hughes County, SD, Hutchinson County, SD, Hyde County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Lincoln County, SD, Lyman County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Potter County, SD, Sanborn County, SD, Spink County, SD, Sully County, SD, Tripp County, SD, Turner County, SD, Walworth County, SD
The radar
The Aberdeen radar (KABR), 98 km from the middle of the area, began a volume at 00:31 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
13 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 7:53 PM CDT | Severe Thunderstorm Warning | ABR | Sully | 47 min |
| Jul 16, 8:05 PM CDT | Tornado Warning | ABR | Hughes | 35 min |
| Jul 16, 8:13 PM CDT | Tornado Warning | ABR | Potter | 47 min |
| Jul 16, 8:21 PM CDT | Severe Thunderstorm Warning | ABR | Hyde | 49 min |
| Jul 16, 8:52 PM CDT | Severe Thunderstorm Warning | ABR | Faulk | 63 min |
| Jul 16, 8:59 PM CDT | Severe Thunderstorm Warning | ABR | Day | 46 min |
| Jul 16, 9:47 PM CDT | Tornado Warning | ABR | Day | 48 min |
| Jul 16, 9:55 PM CDT | Severe Thunderstorm Warning | ABR | Faulk | 50 min |
| Jul 16, 10:16 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Spink | 49 min |
| Jul 16, 10:32 PM CDT | Severe Thunderstorm Warning | ABR | Day | 33 min |
| Jul 16, 11:06 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Day, Spink | 64 min |
| Jul 16, 11:32 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Grant | 63 min |
| Jul 16, 11:40 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Grant | 55 min |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 0.5 hours before the alert went out and 42 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
- 1702 J/kg
- Mixed-layer CIN
- -198 J/kg
- Mixed-layer LCL
- 2085 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 226 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 |
|---|---|---|---|---|
| Jul 17, 12:00 AM CDT | Severe Thunderstorm Watch | SPC | Brookings, Codington, Day, Deuel, Grant, Hamlin and 5 more | 6 hr |
Nearby
Severe Thunderstorm Watches in South Dakota, 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.