Tornadoes · United States · Florida · 1997
F0 tornado, Tampa, Florida, April 28, 1997
This F0 tornado ran 2.7 miles across Hillsborough County on April 28, 1997, touching down at 11:55 AM EDT and reaching 50 yards wide. It killed nobody and injured 1, and did $500,000 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
- April 28, 1997
- Touchdown
- 11:55 AM EDT (15:55 UTC)
- Path length
- 2.7 miles (4.3 km)
- Path width
- 50 yards (46 m)
- Deaths
- 0
- Injuries
- 1
- Property damage
- $500,000
- County
- Hillsborough County
- Touchdown point
- 27.980, -82.470
- Lift-off point
- 27.980, -82.470
- Record number
- 419
What the Weather Service recorded
A tornado touched down on 10th Street and Martin Luther King Blvd and downed several trees and power lines. The tornado continued northeast across a residential area where it caused minor roof and garage damage and downed a few trees and power lines. A small warehouse incurred roof damage and a gazebo was picked up and destroyed by the tornadic wind near Giddens Street and 15th Avenue. A woman working in the damaged warehouse received neck and back injuries from the wind blown roof debris.The tornado crossed the intersection of Hillsborough Avenue and 17th Street where it blew down the sign of a Checker Hamburgers fast-food restaurant, damaged several dozen vehicles of an auto dealership and downed a large flag pole.The next touchdown occurred on 30th Street and Crawford where two ten inch diameter pine trees were snapped off twenty feet above ground level. The final touchdown occurred at a water treatment plant along the Hillsborough River where minor damage was reported.
From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.
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.
Tampa Bay, FL (KTBW), 12:00Z
3.9 hours before the tornado, 31 km from the path. April 28, 1997.
- Mixed-layer CAPE
- 1286 J/kg
- Mixed-layer CIN
- 0 J/kg
- Surface CAPE
- 743 J/kg
- Mixed-layer LCL
- 576 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 209 m²/s²
- 0-3 km storm-relative helicity
- 217 m²/s²
- Significant tornado parameter
- 1.8
- Supercell composite
- 8.2
- 0-3 km lapse rate
- 5.1 K/km
The surface observations
Tampa International Airport (TPA), 7 km from the path, in the two hours either side.
| Time (UTC) | Temp (°F) | Dew point (°F) | Wind | Gust (kt) | Pressure (mb) | Weather |
|---|---|---|---|---|---|---|
| 00:00 UTC |
From the Iowa Environmental Mesonet's archive of airport observations.
This ground now
The live radar over the trackEvery 1997 tornado in FloridaEvery tornado in Florida since 1950Warnings in force in Florida nowThe forecast where you are
The other tornadoes of April 28, 1997
5 more were confirmed in the United States that day.
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.