Alert archive / South Dakota / Tornado Warnings in 1997
Tornado Warning 7, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at Jul 7, 1997, 5:16 PM CDT for Lincoln County, South Dakota. It was in force for 34 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 7, 1997, 5:16 PM CDT (22:16 UTC)
- Expired
- Jul 7, 1997, 5:50 PM CDT
- In force
- 34 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Lincoln County, SD
The radar
The Sioux Falls radar (KFSD), 34 km from the middle of the area, began a volume at 22:16 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 7, 5:17 PM CDT | Tornado F0 | Hudson, SD | A brief tornado observed by a local spotter resulted in no reported damage. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 7, 4:00 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 10.3 hours before the alert went out and 220 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
- 929 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 92 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFSD 072216 RRA TORFSD SDC083-072250- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 516 PM CDT MON JUL 7 1997 * TORNADO WARNING FOR SOUTHEASTERN LINCOLN COUNTY - SOUTHEASTERN SOUTH DAKOTA * UNTIL 550 PM CDT * SOME AREAS AFFECTED HUDSON AROUND 525 PM CDT FAIRVIEW AROUND 530 PM CDT * AT 513 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A DEVELOPING TORNADO 29 MILES SOUTH OF SIOUX FALLS OR 8 MILES WEST OF HUDSON MOVING EAST AT 35 MPH. IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IN A HOME OR BUSINESS IS AN INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE. AVOID WINDOWS. BLOOM
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 4:02 PM CDT | Severe Thunderstorm Warning | FSD | Turner | 33 min |
| Jul 7, 4:14 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha | 46 min |
| Jul 7, 4:41 PM CDT | Tornado Warning | FSD | Lincoln, Minnehaha | 29 min |
| Jul 7, 4:56 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Union | 34 min |
| Jul 7, 5:05 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 30 min |
| Jul 7, 5:08 PM CDT | Tornado Warning | FSD | Union | 32 min |
Nearby
Tornado Warnings in South Dakota, 1997Every tornado warning in 1997Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.