Tornadoes · United States · Florida · 2018

EF0 tornado, Gulf City to Ruskin, Florida, April 23, 2018

From Gulf City to Ruskin, this EF0 tornado ran 1.0 miles across Hillsborough County on April 23, 2018, touching down at 10:03 PM EDT and reaching 40 yards wide. It killed nobody, and did $50,000 of property damage.

The rating scale

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

  1. EF065 to 85 mphthis tornado

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

  2. EF186 to 110 mph

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

  3. EF2111 to 135 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. EF3136 to 165 mph

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

  5. EF4166 to 200 mph

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

  6. EF5over 200 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
EF0
Date
April 23, 2018
Touchdown
10:03 PM EDT (02:03 UTC)
Lifted
10:07 PM EDT (02:07 UTC)
On the ground
4 minutes
Path length
1.0 miles (1.5 km)
Path width
40 yards (37 m)
Deaths
0
Injuries
0
Property damage
$50,000
County
Hillsborough County
Touchdown point
27.701, -82.459
Lift-off point
27.705, -82.444
Record number
1804232003-01

The damage survey

1 damage points were recorded along this path by NWS TBW, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF0. The highest wind the damage implies is 70 mph.

  • Carport completely removed. Half landed across the street and the other half went across the river in Paradise Mobile Home Park.

Survey points are preliminary and are the raw material the published rating was built from. Source: NWS Damage Assessment Toolkit.

What the Weather Service recorded

A small shower moved onshore during the evening hours, producing a brief tornado over Ruskin.

A brief and narrow damage track was found by an NWS storm survey crew, with scattered debris indicating an EF-0 tornado with a peak wind speed of 70 MPH. The tornado formed west-southwest of the US Highway 41 bridge that crosses the Little Manatee River in Ruskin, FL. The tornado traveled east northeast and caused EF-0 damage to the Paradise Mobile Home Park. Wind speeds were based on mobile home and tree damage. Damage consisted of mobile home roof damage (including a collapsed car port) along with 4-5 inch snapped oak limb and fence damage. Light weight debris was thrown several hundred feet. Additionally, a shed and large construction dumpster were also moved several feet in a different direction to debris.

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.

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.

Tampa Bay, FL (KTBW), 00:00Z

2.1 hours before the tornado, 5 km from the path. April 24, 2018.

Skew-T log-pSkew-T log-p diagram, Tampa Bay, FL at 00:00Z on 2018-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 1854 joules per kilogram, CIN -2, lifted condensation level 750 meters above ground. Wind barbs in knots down the right edge.LCLEL10008507005003002001001 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, Tampa Bay, FL at 00:00Z on 2018-04-24The 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 51 square meters per square second, 0 to 6 km bulk shear 14 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
1854 J/kg
Mixed-layer CIN
-2 J/kg
Surface CAPE
2846 J/kg
Mixed-layer LCL
750 m above ground
0-6 km bulk shear
14 kt
0-1 km bulk shear
12 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
35 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
7.2 K/km

Open this sounding in Storm Lab

Tampa Bay, FL (KTBW), 12:00Z

9.9 hours after it, 5 km from the path. April 24, 2018.

Skew-T log-pSkew-T log-p diagram, Tampa Bay, FL at 12:00Z on 2018-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 108 joules per kilogram, CIN -148, lifted condensation level 931 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, Tampa Bay, FL at 12:00Z on 2018-04-24The 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 101 square meters per square second, 0 to 6 km bulk shear 40 knots.1939587897Sfc1 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
108 J/kg
Mixed-layer CIN
-148 J/kg
Surface CAPE
744 J/kg
Mixed-layer LCL
931 m above ground
0-6 km bulk shear
40 kt
0-1 km bulk shear
22 kt
0-1 km storm-relative helicity
101 m²/s²
0-3 km storm-relative helicity
141 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5
0-3 km lapse rate
5.3 K/km

Open this sounding in Storm Lab

The radar

The Tampa radar (KTBW), 5 km away, was scanning. The volume nearest the touchdown began at 02:03 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.

What was reported nearby

Local storm reports within 60 km of the path, in the three hours either side.

Time (UTC)ReportWhereCountyRemark
02:04 UTCTORNADO 05 Ssw Apollo BeachHillsborough, FLCORRECTED AFTER STORM SURVEY. AS A SHOWER MOVED ONSHORE LAST NIGHT, SURFACE CONVERGENCEALLOWED FOR THE FORMATION OF A BRIEF EF-0 TORNADO. THE TORNADO FORMED NEAR THE US HWY 41 BRIDGE THAT CROSSES THE LITTLE MANATEE RIVER
02:05 UTCDOWNBURST5 Ssw Apollo BeachHillsborough, FLMINOR DAMAGE TO AROUND 10 MOBILE HOMES INCLUDING ROOF AND CAR PORT DAMAGE. ALSO DAMAGE TO A FEW TREE LIMBS.

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

This ground now

The live radar over the trackEvery 2018 tornado in FloridaEvery tornado in Florida since 1950Warnings in force in Florida 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.