Tornadoes · United States · Florida · 2024
EF1 tornado, Southside Estates to Hogan, Florida, June 28, 2024
From Southside Estates to Hogan, this EF1 tornado ran 1.4 miles across Duval County on June 28, 2024, touching down at 2:15 PM EDT and reaching 200 yards wide. It killed nobody.
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.
EF065 to 85 mph
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
EF186 to 110 mphthis tornado
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
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.
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.
EF4166 to 200 mph
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
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.
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
- EF1
- Date
- June 28, 2024
- Touchdown
- 2:15 PM EDT (18:15 UTC)
- Lifted
- 2:25 PM EDT (18:25 UTC)
- On the ground
- 10 minutes
- Path length
- 1.4 miles (2.3 km)
- Path width
- 200 yards (183 m)
- Deaths
- 0
- Injuries
- 0
- County
- Duval County
- Touchdown point
- 30.287, -81.555
- Lift-off point
- 30.291, -81.577
- Record number
- 2406281215-01
The damage survey
10 damage points were recorded along this path by NWS JAX, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 100 mph.
- Parked car at auto dealership overturned
- Chimney cap askew on residence
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
Prevailing SW flow over a moist and unstable airmass triggered strong to pulse severe storms toward the Atlantic coast where sea breeze and boundary mergers occurred.
An initial and brief touchdown occurred south of Beach Boulevard |where a parked vehicle on a car dealership lot was overturned and|tossed onto Beach Blvd. From there, the tornado did not maintain|contact with the ground; it skipped to the west northwest where |the supporting circulation tightened near a residential |neighborhood in the Holiday Hill area where significant damage |occurred. Primary damage in this area included several trees |snapped and downed powerlines in the area of Grove Park Boulevard |and Catalina Road East. Secondary damage to a home occurred due to|a large uprooted tree in the same area. The tornado then shifted|westward, crossing Pottsburg Creek before finally dissipating near|Tara Lane and Parental Home Road.
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. One was issued for the county at another hour that day.
| Issued (UTC) | Expired | Product | Office |
|---|---|---|---|
| 18:16 UTC | 18:45 UTC | Severe Thunderstorm Warning | JAX |
| 18:21 UTC | 18:45 UTC | Tornado Warning | JAX |
| 21:17 UTC | 21:41 UTC | Severe Thunderstorm Warning | JAX |
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 16:30 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.
Jacksonville, FL (KJAX), 12:00Z
6.3 hours before the tornado, 27 km from the path. June 28, 2024.
- Mixed-layer CAPE
- 1089 J/kg
- Mixed-layer CIN
- -25 J/kg
- Surface CAPE
- 252 J/kg
- Mixed-layer LCL
- 836 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -67 m²/s²
- 0-3 km storm-relative helicity
- -83 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
- 0-3 km lapse rate
- 4.8 K/km
Jacksonville, FL (KJAX), 00:00Z
5.7 hours after it, 27 km from the path. June 29, 2024.
- Mixed-layer CAPE
- 345 J/kg
- Mixed-layer CIN
- -125 J/kg
- Surface CAPE
- 1348 J/kg
- Mixed-layer LCL
- 769 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -72 m²/s²
- 0-3 km storm-relative helicity
- -45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
- 0-3 km lapse rate
- 4.4 K/km
The radar
The Jacksonville radar (KJAX), 25 km away, was scanning. The volume nearest the touchdown began at 18:13 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.
What was reported nearby
Local storm reports within 60 km of the path, in the three hours either side.
| Time (UTC) | Report | Where | County | Remark |
|---|---|---|---|---|
| 18:15 UTC | TSTM WND DMG | 3 Wnw Unf | Duval, FL | Duval County emergency management reported an overturned vehicle. Damage may be result of brief tornado in the area. |
| 18:15 UTC | TORNADO | 3 Wnw Unf | Duval, FL | Updated report to change the event type to Tornado. Duval County emergency management reported an overturned vehicle. Social media reports show video of the flipped vehicle and tornado in contact with the ground. Injurie |
| 18:17 UTC | TSTM WND DMG | 4 Sse Arlington | Duval, FL | Photos on social media of a large tree down on powerlines at Grove Park Blvd and Catalina Dr. Time estimated based on radar. |
| 18:25 UTC | TSTM WND DMG | 3 Nne Unf | Duval, FL | Corrects timing of event based on radar. Duval Emergency management relayed a report of powerline wires down along the road at Kernan Blvd and Atlantic Blvd. |
| 18:35 UTC | NON-TSTM WND GST 41 | 4 Ssw Fort Caroline | Duval, FL | ASOS station KCRG Jacksonvil Craig. |
| 18:46 UTC | TSTM WND DMG | 3 Nne Unf | Duval, FL | Duval Emergency management relayed a report of powerline wires down along the road at Kernan Blvd and Atlantic Blvd. |
| 19:15 UTC | FLOOD | 3 Ese Arlington | Duval, FL | Estimated three feet of water at Millcreek Road and Arlington Expressway with vehicles stuck in flood waters. Reported by emergency management. No injuries reported. |
| 19:30 UTC | TSTM WND DMG | 1 Wsw Fernandina Beach | Nassau, FL | Delayed report of a tree down across the road near Olive St. Time estimated via radar. |
From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.
This ground now
The live radar over the trackEvery 2024 tornado in FloridaEvery tornado in Florida since 1950Warnings in force in Florida nowThe forecast where you are
The other tornadoes of June 28, 2024
8 more were confirmed in the United States that day.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| June 28 | 7:44 PM CDT | Unrated | Cass, IA | 0.9 | 40 | |||
| June 28 | 7:55 PM CDT | EF0 | Cass, IA | 2.4 | 50 | $1,000 | ||
| June 28 | 8:13 PM CDT | Unrated | Lyon, KS | 2.4 | 30 | |||
| June 28 | 8:39 PM CDT | EF0 | Osage, KS | 1.2 | 30 | |||
| June 28 | 8:40 PM CDT | Unrated | Cass, IA | 0.4 | 30 | |||
| June 28 | 8:42 PM CDT | Unrated | Cass, IA | 0.3 | 20 | |||
| June 28 | 8:59 PM CDT | EF0 | Osage, KS | 0.3 | 30 | |||
| June 28 | 9:02 PM CDT | Unrated | Atchison, MO | 0.1 | 20 |
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.