Alert archive / South Dakota / Tornado Warnings in 1996

Tornado Warning 21, NWS Rapid City, SD

August 9, 1996Harding County, South Dakota

NWS Rapid City, SD issued this tornado warning at Aug 9, 1996, 3:57 PM MDT for Harding County, South Dakota. It was in force for 63 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
Aug 9, 1996, 3:57 PM MDT (21:57 UTC)
Expired
Aug 9, 1996, 5:00 PM MDT
In force
63 min
Issued by
NWS Rapid City, SD
Area
Whole counties

County Harding County, SD

The radar

The Rapid City radar (KUDX), 170 km from the middle of the area, began a volume at 21:57 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

TimeReportWhereRemark
Aug 9, 4:15 PM MDTHail 1.75Buffalo, 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

Rapid City, SD (KUNR), launched 12:00Z, 10.0 hours before the alert went out and 175 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.

Skew-T log-pSkew-T log-p diagram, Rapid City, SD at 12:00Z on 1996-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 994 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Rapid City, SD at 12:00Z on 1996-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
994 J/kg
Mixed-layer CIN
-195 J/kg
Mixed-layer LCL
1975 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
32 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KRAP 092156
TORRAP
SDC063-092300-

BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE RAPID CITY SD
357 PM MDT FRI AUG 9 1996

THE NATIONAL WEATHER SERVICE IN RAPID CITY HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 500 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHWEST SOUTH DAKOTA

   ...SOUTHERN HARDING COUNTY
 
AT 355 PM DOPPLER RADAR INDICATED A POSSIBLE TORNADO 8 MILES NORTHWEST
OF BUFFALO MOVING SOUTHEAST AT 20 MPH. THISX STORM ALSO CONTAINS LARGE
HAIL AND WILL AFFECT BUFFALO BY 410 PM MDT.
 
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.

The office that day

Everything else NWS Rapid City, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 9, 9:17 AM MDTSevere Thunderstorm WarningUNRZiebach58 min
Aug 9, 2:52 PM MDTTornado WarningUNRHarding63 min
Aug 9, 3:06 PM MDTSevere Thunderstorm WarningUNRCuster64 min
Aug 9, 3:09 PM MDTSevere Thunderstorm WarningUNRLawrence66 min
Aug 9, 3:14 PM MDTSevere Thunderstorm WarningUNRMeade61 min
Aug 9, 3:59 PM MDTSevere Thunderstorm WarningUNRCuster61 min
Aug 9, 4:06 PM MDTSevere Thunderstorm WarningUNRLawrence, Pennington64 min
Aug 9, 4:32 PM MDTFlash Flood WarningUNRCuster63 min
Aug 9, 4:32 PM MDTSevere Thunderstorm WarningUNRCuster63 min
Aug 9, 4:42 PM MDTSevere Thunderstorm WarningUNRFall River63 min
Aug 9, 4:59 PM MDTSevere Thunderstorm WarningUNRHarding46 min
Aug 9, 5:00 PM MDTSevere Thunderstorm WarningUNRPennington45 min
Aug 9, 5:04 PM MDTSevere Thunderstorm WarningUNRButte61 min
Aug 9, 5:30 PM MDTFlash Flood WarningUNRCuster60 min
Aug 9, 5:30 PM MDTSevere Thunderstorm WarningUNRCuster60 min
Aug 9, 5:35 PM MDTSevere Thunderstorm WarningUNRFall River55 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; radar from the NEXRAD Level II archive.