Alert archive / South Dakota / Tornado Warnings in 1998

Tornado Warning 18, NWS Rapid City, SD

June 23, 1998Todd County, South Dakota

NWS Rapid City, SD issued this tornado warning at Jun 23, 1998, 8:02 PM CDT for Todd County, South Dakota. It was in force for 33 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
Jun 23, 1998, 8:02 PM CDT (01:02 UTC)
Expired
Jun 23, 1998, 8:35 PM CDT
In force
33 min
Issued by
NWS Rapid City, SD
Area
Whole counties

County Todd County, SD

The radar

The North Platte radar (KLNX), 138 km from the middle of the area, began a volume at 01:02 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
Jun 23, 8:03 PM CDTTornado F0Olsonville, 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 23, 6:15 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Rapid City, SD (KUNR), launched 00:00Z, 1.0 hours before the alert went out and 199 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 00:00Z on 1998-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2260 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 00:00Z on 1998-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 141 square meters per square second.19395878Sfc1 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
2260 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
1169 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
141 m²/s²
0-3 km storm-relative helicity
186 m²/s²
Significant tornado parameter
2.1
Supercell composite
16.4

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

NWS Rapid City, SD wrote its last area forecast discussion before this tornado warning went out at Jun 23, 11:03 AM CDT, 8 hours 59 minutes earlier.

Area forecast discussion, Jun 23, 11:03 AM CDT, 8 hours 59 minutes before
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
1003 AM MDT TUE JUN 23 1998

VSBL STLT SHOWS ACCAS FLD DEVLOPED INTO -TSRA FROM ECNTRL WY INTO
SCNTRL SD. RUC2 SHOWS INCREASING INSTABILITY AS HEATING CONTINUES IN
MO CLEAR SKIES N OF CONVECTION. COMBINATION OF U70 TO AROUND 80
TEMPS AND DWPTS A60 SHOULD PRODUCE CAPES IN THE 2500 TO 3000 J/KG
RANGE BY THIS AFTERNOON. RUC2 WANTS STORMS TO REALLY TAKE OFF AS THE
ACCAS LINE MAKES IT TO THE BLK HLS BY EARLY AFTERNOON. THIS LOOKS
REASONABLE. EARLY ON WOULD LOOK FOR MULTICELL STORMS AS SHEAR WILL
BE A LITTLE LACKING...BUT BY MID TO LATE AFTERNOON AS CAPE AND SHEAR
INCREASE SUPERCELLS WILL BE A GOOD POSSIBILITY. AS FAR AS HEAVY RAIN
POTENTIAL OVR BLK HLS...MULTICELL MOTION OUGHT TO BE NE AT 15-20 KTS
AND SUPERCELL MOTION...IF IT COMES TO THAT...SHOULD BE E AT 10 TO 15
KTS. THIS SHOULD LIMIT HEAVY RAIN POTENTIAL...BUT WILL HAVE TO WATCH
FOR THE ROGUE TSRA WITH SLOWER MOVEMENT POSSIBLY DUE TO TERRAIN
INTERACTIONS OVR BLK HLS.

.UNR...NONE.
BAILEY

In the hours before

Local storm report, Jun 23, 7:22 PM CDT, 40 minutes before
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Local storm report, Jun 23, 7:22 PM CDT, 40 minutes before
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<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Jun 23, 7:33 PM CDT, 29 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
633 PM MDT TUE JUN 23 1998

TIME(MDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0630 PM    10 NNW (RCA)ELLSWORTH AFB RAPID CITY
                                     SD    TORNADO
06/23/98   MEADE                           THIN ROPE TORNADO.
                                           ESTIMATED 150 YARDS
                                           WIDE AT THE BASE.
Local storm report, Jun 23, 7:33 PM CDT, 29 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
633 PM MDT TUE JUN 23 1998

TIME(MDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0630 PM    10 NNW (RCA)ELLSWORTH AFB RAPID CITY
                                     SD    TORNADO
06/23/98   MEADE                           THIN ROPE TORNADO.
                                           ESTIMATED 150 YARDS
                                           WIDE AT THE BASE.
Local storm report, Jun 23, 7:55 PM CDT, 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
655 PM MDT TUE JUN 23 1998

TIME(MDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0650 PM    6 N (RCA)ELLSWORTH AFB RAPID CITY
                                     SD    TORNADO
06/23/98   MEADE                           REPORTED BY NUMEROUS
                                           SPOTTERS...STILL ON THE
                                           GROUND AT 1855 UTC.

ZEITLER
Local storm report, Jun 23, 7:55 PM CDT, 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
655 PM MDT TUE JUN 23 1998

TIME(MDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0650 PM    6 N (RCA)ELLSWORTH AFB RAPID CITY
                                     SD    TORNADO
06/23/98   MEADE                           REPORTED BY NUMEROUS
                                           SPOTTERS...STILL ON THE
                                           GROUND AT 1855 UTC.

ZEITLER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 23, 7:21 PM CDTSevere Thunderstorm WarningUNRTodd49 min
Jun 23, 7:27 PM CDTTornado WarningUNRMeade33 min
Jun 23, 7:44 PM CDTSevere Thunderstorm WarningUNRMellette46 min
Jun 23, 7:56 PM CDTTornado WarningUNRMeade34 min
Jun 23, 8:13 PM CDTTornado WarningUNRTripp32 min
Jun 23, 8:30 PM CDTTornado WarningUNRMeade30 min
Jun 23, 8:41 PM CDTSevere Thunderstorm WarningUNRTripp49 min
Jun 23, 8:51 PM CDTTornado WarningUNRPennington34 min
Jun 23, 9:19 PM CDTSevere Thunderstorm WarningUNRTripp36 min
Jun 23, 9:24 PM CDTTornado WarningUNRPennington31 min
Jun 23, 9:59 PM CDTTornado WarningUNRHaakon, Jackson, Pennington46 min
Jun 24, 6:02 PM CDTSevere Thunderstorm WarningUNRTripp33 min
Jun 24, 6:50 PM CDTSevere Thunderstorm WarningUNRCuster, Fall River45 min
Jun 24, 3:55 PM CDTSevere Thunderstorm WarningUNRCampbell50 min
Jun 24, 5:51 PM CDTSevere Thunderstorm WarningUNRCrook34 min

Nearby

Tornado Warnings in South Dakota, 1998Every tornado warning in 1998Tornadoes in 1998

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.