Tornadoes · United States · California · 1997
F0 tornado, Bakersfield, California, February 17, 1997
This F0 tornado ran 0.3 miles across Kern County on February 17, 1997, touching down at 2:15 PM PST and reaching 10 yards wide. It killed nobody, and did $10,000 of property damage.
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.
F040 to 72 mphthis tornado
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
F173 to 112 mph
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
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.
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.
F4207 to 260 mph
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
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.
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
- February 17, 1997
- Touchdown
- 2:15 PM PST (22:15 UTC)
- Path length
- 0.3 miles (0.5 km)
- Path width
- 10 yards (9 m)
- Deaths
- 0
- Injuries
- 0
- Property damage
- $10,000
- County
- Kern County
- Touchdown point
- 35.370, -119.000
- Lift-off point
- 35.370, -119.000
- Record number
- 12
What the Weather Service recorded
Eyewitness accounts support surface evidence that some minor damage occurred in southwest Bakersfield associated with a funnel presence. The tornado is classed as a small F0 with a relatively short path and narrow in width. Large hail also accompanied this storm. One indirect weather-related fatality occurred with the county thunderstorms as a vehicle overturned on a rain-slickened road 8 miles northwest of Bakersfield at 1515 PST.
From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.
The warnings
No tornado warning for this county appears in the archive as in force at the moment the tornado touched down.
| Issued (UTC) | Expired | Product | Office |
|---|---|---|---|
| 22:25 UTC | 00:30 UTC | Severe Thunderstorm Warning | HNX |
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 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.
Edwards AFB, CA (KEDW), 12:00Z
10.3 hours before the tornado, 121 km from the path. February 17, 1997.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- -7681 J/kg
- Surface CAPE
- 0 J/kg
- Mixed-layer LCL
- 2737 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 111 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
- 0-3 km lapse rate
- 4.2 K/km
Edwards AFB, CA (KEDW), 00:00Z
1.7 hours after it, 121 km from the path. February 18, 1997.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- -17777 J/kg
- Surface CAPE
- 0 J/kg
- Mixed-layer LCL
- 3690 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 80 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
- 0-3 km lapse rate
- 7.5 K/km
The radar
The Los Angeles radar (KVTX), 108 km away, was scanning. The volume nearest the touchdown began at 22:13 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 1997 tornado in CaliforniaEvery tornado in California since 1950Warnings in force in California nowThe forecast where you are
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.