Alert archive / South Dakota / Tornado Warnings in 1996
Tornado Warning 20, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at Aug 6, 1996, 6:36 PM CDT for Miner County, Sanborn County, South Dakota. It was in force for 34 min. 3 reports 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
- Aug 6, 1996, 6:36 PM CDT (23:36 UTC)
- Expired
- Aug 6, 1996, 7:10 PM CDT
- In force
- 34 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
Counties Miner County, SD, Sanborn County, SD
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 6, 6:36 PM CDT | Thunderstorm Wind 61 | Forestburg, SD | |
| Aug 6, 6:40 PM CDT | Thunderstorm Wind 65 | Canova, SD | |
| Aug 6, 7:00 PM CDT | Hail 1.75 | Letcher, SD |
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 nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 11.6 hours before the alert went out and 107 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
- 1082 J/kg
- Mixed-layer CIN
- -456 J/kg
- Mixed-layer LCL
- 1178 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 318 m²/s²
- 0-3 km storm-relative helicity
- 222 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFSD 062336 TORFSD SDC097-111-070010- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 636 PM CDT TUE AUG 6 1996 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS SD HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 710 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN EAST CENTRAL SOUTH DAKOTA ...WESTERN MINER COUNTY ...SOUTHEASTERN SANBORN COUNTY AT 636 PM CDT...A DEVELOPING TORNADO WAS INDICATED BY SIOUX FALLS DOPPLER RADAR 13 MILES NORTH OF MITCHELL OR 7 MILES SOUTH OF ARTESIAN MOVING EAST AT 25 MPH. THE TORNADO IS CURRENTLY EXPECTED TO REMAIN OVER RURAL AREAS. DO NOT USE YOUR CAR TO OUTRUN A TORNADO. CARS ARE EASILY TOSSED AROUND BY TORNADIC WINDS. IF YOU ARE CAUGHT IN THE PATH OF A TORNADO...LEAVE THE CAR AND GO TO A STRONG REINFORCED BUILDING. IF NO STRUCTURE IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT. HOLMES
What forecasters said that day
The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Aug 6, 1:50 PM CDT, 4 hours 46 minutes before
SDZ040-055-056-061-062-065>071-IAZ001>003-012>014-020>022-031-032- MNZ097-098-NEZ013-014-062300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 150 PM CDT TUE AUG 6 1996 ...SEVERE THUNDERSTORMS EXPECTED OVER PARTS OF SOUTHEAST SOUTH DAKOTA...SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA BY THIS EVENING... A VERY MOIST AND EXTREMELY UNSTABLE AIR MASS IS BLANKETING MUCH OF THE AREA THIS AFTERNOON. SCATTERED THUNDERSTORMS ARE EXPECTED TO ERUPT ALONG A COLD FRONT MOVING VERY SLOWLY EAST THROUGH EASTERN SOUTH DAKOTA. AT THIS TIME...DEVELOPMENT IS EXPECTED TO INITIATE ALONG THE FRONT LATE THIS AFTERNOON FROM BROOKINGS TO YANKTON. CONDITIONS ARE FAVORABLE FOR MANY OF THESE THUNDERSTORMS TO BECOME SEVERE AND PRODUCE LARGE HAIL...DAMAGING WIND..AND TORRENTIAL RAIN. STORMS WILL PLOW INTO ADJACENT AREAS OF NORTHEAST NEBRASKA...NORTHWEST IOWA...AND SOUTHWEST MINNESOTA BY EARLY EVENING. STAY TUNED TO NOAA WEATHER RADIO OR ANOTHER RELIABLE WEATHER NEWS SOURCE FOR THE LATEST INFORMATION ON THIS DEVELOPING SEVERE WEATHER SITUATION. CHAPMAN
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 5:18 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix | 47 min |
| Aug 6, 5:46 PM CDT | Severe Thunderstorm Warning | FSD | Lake, Miner | 29 min |
| Aug 6, 5:46 PM CDT | Tornado Warning | FSD | Davison | 34 min |
| Aug 6, 5:54 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme | 46 min |
| Aug 6, 5:54 PM CDT | Tornado Warning | FSD | Aurora | 21 min |
| Aug 6, 6:04 PM CDT | Tornado Warning | FSD | Sanborn | 31 min |
| Aug 6, 6:15 PM CDT | Tornado Warning | FSD | Lake, Miner | 35 min |
| Aug 6, 6:20 PM CDT | Tornado Warning | FSD | Davison | 35 min |
| Aug 6, 6:24 PM CDT | Tornado Warning | FSD | Bon Homme | 31 min |
| Aug 6, 6:27 PM CDT | Tornado Warning | FSD | Lake, McCook | 33 min |
| Aug 6, 6:41 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury | 34 min |
| Aug 6, 6:42 PM CDT | Severe Thunderstorm Warning | FSD | Hutchinson, Turner | 48 min |
| Aug 6, 6:50 PM CDT | Tornado Warning | FSD | Lake | 35 min |
| Aug 6, 6:56 PM CDT | Severe Thunderstorm Warning | FSD | Sanborn | 34 min |
Nearby
Tornado Warnings in South Dakota, 1996Every tornado warning in 1996Tornadoes in 1996
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.