Tornadoes · United States · Florida · 2023

EF0 tornado, (Apf)Naples Muni Arp, Florida, August 24, 2023

This EF0 tornado ran 0.8 miles across Collier County on August 24, 2023, touching down at 4:55 PM EDT and reaching 50 yards wide. It killed nobody, and did $100,000 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
August 24, 2023
Touchdown
4:55 PM EDT (20:55 UTC)
Lifted
4:58 PM EDT (20:58 UTC)
On the ground
3 minutes
Path length
0.8 miles (1.2 km)
Path width
50 yards (46 m)
Deaths
0
Injuries
0
Property damage
$100,000
County
Collier County
Touchdown point
26.145, -81.756
Lift-off point
26.142, -81.768
Record number
2308241455-01

The damage survey

6 damage points were recorded along this path by NWS MFL, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF0. The highest wind the damage implies is 80 mph.

  • Multiple large branches snapped off softwood tree in front yard of 842 Roseate Dr
  • Portion of roof removed and laying in front driveway/yard
  • Small panel of siding and softwood tree damage at 3586 Hibiscus Ave
  • Young laurel oak uprooted in Lawrence Walker Technical College west parking lot

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 brief tornado occurred during the early evening of Thursday August 24, 2023 in Naples, Florida. This led to minor damage, primarily to cars and large trees, across just less than a mile long path. There were no reports of injuries or deaths.

A brief tornado occurred during the early evening of Thursday August |24, 2023 in Naples. The tornado was believed to have touched down near |Roseate Dr and Robin Ave where multiple large tree branches were snapped off. |The tornado then traveled SW and did some roof damage to a home on Cardinal |St. Additional minor tree and aluminum damage was observed near the |Walker Technical College. The strongest wind damage was observed in the |vicinity of the college where 9 vehicles were damaged in the parking lot. Some |of the car damage was from a falling tree, and other damage was from cars being |moved into each other by the wind. The tornado then crossed Airport Rd south |of Estey Ave before lifting. Wind speeds were mostly estimated between 50-60 mph |however the strongest winds near the technical college were estimated to be |around 80 mph, for a rating of EF-0.

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 forecast that day

The Storm Prediction Center had this point in a General Thunderstorms Risk. The outlook in force was issued at 19:55 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.

Miami, FL (KMFL), 12:00Z

8.9 hours before the tornado, 151 km from the path. August 24, 2023.

Skew-T log-pSkew-T log-p diagram, Miami, FL at 12:00Z on 2023-08-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 866 joules per kilogram, CIN -34, lifted condensation level 980 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, Miami, FL at 12:00Z on 2023-08-24The 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 25 square meters per square second, 0 to 6 km bulk shear 14 knots.1939Sfc1 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
866 J/kg
Mixed-layer CIN
-34 J/kg
Surface CAPE
1729 J/kg
Mixed-layer LCL
980 m above ground
0-6 km bulk shear
14 kt
0-1 km bulk shear
5 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
38 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.8 K/km

Open this sounding in Storm Lab

Miami, FL (KMFL), 00:00Z

3.1 hours after it, 151 km from the path. August 25, 2023.

Skew-T log-pSkew-T log-p diagram, Miami, FL at 00:00Z on 2023-08-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 1351 joules per kilogram, CIN -11, lifted condensation level 795 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, Miami, FL at 00:00Z on 2023-08-25The 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 58 square meters per square second, 0 to 6 km bulk shear 14 knots.1939Sfc1 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
1351 J/kg
Mixed-layer CIN
-11 J/kg
Surface CAPE
2677 J/kg
Mixed-layer LCL
795 m above ground
0-6 km bulk shear
14 kt
0-1 km bulk shear
14 kt
0-1 km storm-relative helicity
58 m²/s²
0-3 km storm-relative helicity
52 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
6.3 K/km

Open this sounding in Storm Lab

The radar

The Miami radar (KAMX), 147 km away, was scanning. The volume nearest the touchdown began at 20:57 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
20:52 UTCTORNADO2 W East NaplesCollier, FLVideo from broadcast media of short lived weak tornado (potentially landspout) moving through East Naples along Airport Pulling Rd,.

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

This ground now

The live radar over the trackEvery 2023 tornado in FloridaEvery tornado in Florida since 1950Warnings in force in Florida nowThe forecast where you are

The other tornadoes of August 24, 2023

21 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
August 242:38 PM CDTUnratedMcHenry, ND0.850
August 242:54 PM CDTUnratedMcHenry, ND0.650
August 248:15 PM EDTEF1Kent, MI8.7100$10 million
August 249:29 PM EDTEF2Ingham, MI12.050024$75 million
August 2410:19 PM EDTEF0Wayne, MI1.7200$100,000
August 2410:23 PM EDTEF1Wayne, MI3.0200$60,000
August 2410:38 PM EDTEF1Monroe, MI4.9200$1.0 million
August 2410:39 PM EDTEF1Monroe, MI5.4200$350,000
August 2410:43 PM EDTEF1Wayne, MI1.4300$50,000
August 2411:08 PM EDTEF1Sandusky, OH4.5100$35,000
August 2411:46 PM EDTEF1Erie, OH0.3100$30,000
August 2411:59 PM EDTEF1Cuyahoga, OH0.8150$165,000
August 2412:00 AM EDTEF0Lorain, OH0.350$50,000
August 2412:05 AM EDTEF0Lorain, OH1.1100$40,000
August 2412:06 AM EDTEF1Lake, OH3.3150$200,000
August 2412:07 AM EDTEF2Cuyahoga, OH1.5100$300,000
August 2412:11 AM EDTEF1Medina, OH1.5200$20,000
August 2412:16 AM EDTEF1Geauga, OH1.8100$85,000
August 2412:18 AM EDTEF1Geauga, OH1.2175$50,000
August 2412:22 AM EDTEF2Geauga, OH0.7100$65,000
August 2412:35 AM EDTEF0Trumbull, OH1.9100$35,000

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.