Tornadoes · United States · South Dakota · 1996

F0 tornado, Rapid City, South Dakota, May 30, 1996

This F0 tornado ran 0.1 miles across Pennington County on May 30, 1996, touching down at 5:10 PM MDT and reaching 10 yards wide. It killed nobody.

The rating scale

Tracks are drawn in the color of the rating. The Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.

  1. F040 to 72 mphthis tornado

    Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

  2. F173 to 112 mph

    Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

  3. F2113 to 157 mph

    Considerable damage. Roofs torn off well-built houses, frame homes shifted on their foundations, mobile homes destroyed, large trees snapped or uprooted, cars lifted off the ground.

  4. F3158 to 206 mph

    Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.

  5. F4207 to 260 mph

    Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

  6. F5261 to 318 mph

    Incredible damage. Strong frame houses swept off their foundations, car-sized missiles thrown more than 100 meters, steel-reinforced concrete badly damaged, high-rise buildings deformed.

  7. Unrated

    The survey recorded a tornado but could not put a number on it, most often because it crossed open country and damaged nothing a rating can be read from.

The record

Rating
F0
Date
May 30, 1996
Touchdown
5:10 PM MDT (23:10 UTC)
Path length
0.1 miles (0.2 km)
Path width
10 yards (9 m)
Deaths
0
Injuries
0
County
Pennington County
Touchdown point
43.980, -103.220
Lift-off point
43.980, -103.220
Record number
241

What the Weather Service recorded

POLICE REPORTED A BRIEF TORNADO OVER A FIELD.

BRIEF TORNADO REPORTED BY POLICE.

From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.

The warnings

28 minutes of warning. NWS UNR issued a tornado warning for this county at 22:42 UTC, 28 minutes before the tornado touched down, in force until 23:15 UTC.

Issued (UTC)ExpiredProductOffice
21:11 UTC22:00 UTCSevere Thunderstorm WarningUNR
21:55 UTC22:30 UTCSevere Thunderstorm WarningUNR
22:14 UTC23:15 UTCFlash Flood WarningUNR
22:17 UTC22:45 UTCTornado WarningUNR
22:42 UTC23:15 UTCTornado WarningUNR
22:52 UTC23:30 UTCTornado WarningUNR
23:10 UTC01:30 UTCFlash Flood WarningUNR
23:30 UTC00:00 UTCTornado WarningUNR
00:00 UTC00:30 UTCSevere Thunderstorm WarningUNR
00:02 UTC00:30 UTCSevere Thunderstorm WarningUNR
01:30 UTC03:00 UTCFlash Flood WarningUNR

Every warning and watch covering the touchdown point that day, from the Iowa Environmental Mesonet's archive of National Weather Service products. Lead time is measured from the issue of the warning in force to the touchdown time in the database, both of which were recorded to the minute by different people.

The forecast that day

The Storm Prediction Center had this point in a Slight Risk. The outlook in force was issued at 06:13 UTC.

SPC's Day 1 convective outlook as it stood when the tornado began, read at the touchdown point. The same archive is on the radar archive.

The air that afternoon

The radiosonde launches on either side of the tornado, from the nearest station that was launching then, drawn and analyzed the way Storm Lab does: the same diagram, the same parcel and shear definitions SPC's mesoanalysis uses.

Rapid City, SD (KUNR), 12:00Z

11.2 hours before the tornado, 29 km from the path. May 30, 1996.

Skew-T log-pSkew-T log-p diagram, Rapid City, SD at 12:00Z on 1996-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 12 joules per kilogram, CIN -136, lifted condensation level 674 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Rapid City, SD at 12:00Z on 1996-05-30The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 90 square meters per square second, 0 to 6 km bulk shear 40 knots.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. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
12 J/kg
Mixed-layer CIN
-136 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
674 m above ground
0-6 km bulk shear
40 kt
0-1 km bulk shear
24 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
194 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.7 K/km

Open this sounding in Storm Lab

Rapid City, SD (KUNR), 00:00Z

0.8 hours after it, 29 km from the path. May 31, 1996.

Skew-T log-pSkew-T log-p diagram, Rapid City, SD at 00:00Z on 1996-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 77 joules per kilogram, CIN -26, lifted condensation level 790 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Rapid City, SD at 00:00Z on 1996-05-31The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 91 square meters per square second, 0 to 6 km bulk shear 29 knots.1939Sfc1 km3 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. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
77 J/kg
Mixed-layer CIN
-26 J/kg
Surface CAPE
248 J/kg
Mixed-layer LCL
790 m above ground
0-6 km bulk shear
29 kt
0-1 km bulk shear
14 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
144 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
5.7 K/km

Open this sounding in Storm Lab

The surface observations

Rapid City (RAP), 15 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
21:11 UTC100° 8 kt1010.5
21:19 UTC120° 4 kt1010.5
22:00 UTC675760° 9 kt1008.8
22:14 UTC60° 8 kt1010.2-TSRA
22:33 UTC60° 6 kt1010.5TSRA
23:00 UTC625920° 7 kt1009.5TSRA FG
23:06 UTC30° 9 kt1010.2-TSRA
23:43 UTC360° 7 kt1011.5+TSRA FG
23:45 UTC595810° 8 kt1011.5+TSRAPLGR FG
23:48 UTC10° 11 kt1011.2+TSRA
00:06 UTC90° 4 kt1011.2+TSRA
00:34 UTC60° 11 kt1011.5+TSRA
00:39 UTC80° 13 kt1011.5+TSRA
01:00 UTC575440° 11 kt1010.2TSRA

From the Iowa Environmental Mesonet's archive of airport observations.

The radar

The Rapid City radar (KUDX), 35 km away, was scanning. The volume nearest the touchdown began at 23:07 UTC.

Open the radar archive at this moment, over the track

Reflectivity and velocity, decoded from the Level II archive in the browser. Volumes take a few seconds to open the first time.

This ground now

The live radar over the trackEvery 1996 tornado in South DakotaEvery tornado in South Dakota since 1950Warnings in force in South Dakota nowThe forecast where you are

The other tornadoes of May 30, 1996

26 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
May 302:56 PM CDTF0Jones, TX0.290
May 304:25 PM MDTF3Washington, CO0.51,320$300,000
May 304:30 PM MDTF0Morton, ND3.010
May 304:30 PM MDTF0Pennington, SD0.110
May 304:45 PM MDTF0Weld, CO0.5660
May 304:46 PM MDTF0Morgan, CO0.150
May 304:50 PM MDTF0Morgan, CO0.150
May 304:50 PM MDTF2Morgan, CO1.0880$150,000
May 306:02 PM CDTF0Oliver, ND4.010
May 305:04 PM MDTF0Morgan, CO0.150
May 305:12 PM MDTF0Perkins, SD0.110
May 305:15 PM MDTF0Washington, CO0.150
May 305:18 PM MDTF0Morgan, CO0.150
May 305:26 PM MDTF0Yuma, CO0.150
May 306:00 PM MDTF0Washington, CO0.150
May 306:06 PM MDTF1Banner, NE1.0100$30,000
May 307:08 PM CDTF0Eastland, TX0.120
May 306:08 PM MDTF0Phillips, CO0.150
May 306:10 PM MDTF0Morton, ND0.110
May 306:30 PM MDTF0Washington, CO0.150
May 306:35 PM MDTF0Washington, CO0.150
May 307:02 PM MDTF0Quay, NM0.150
May 307:15 PM MDTF0Morton, ND0.110
May 307:15 PM MDTF0Washington, CO0.150
May 308:26 PM CDTF0Comanche, TX0.120
May 309:00 PM MDTF0Washington, CO0.150

What this means

Ratings are the survey's, read off the damage rather than measured; the rating scale is above. Tornado counts rise through the record as reporting improved, so a year in the 1950s is not comparable with one today except for the strongest tornadoes, which were always noticed.

Sources

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.