Tornadoes · United States · Florida · 2017
EF0 tornado, Kissimmee, Florida, July 7, 2017
This EF0 tornado ran 0.7 miles across Osceola County on July 7, 2017, touching down at 8:29 PM EDT and reaching 25 yards wide. It killed nobody, and did $20,000 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.
EF065 to 85 mphthis tornado
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
EF186 to 110 mph
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
- EF0
- Date
- July 7, 2017
- Touchdown
- 8:29 PM EDT (00:29 UTC)
- Lifted
- 8:32 PM EDT (00:32 UTC)
- On the ground
- 3 minutes
- Path length
- 0.7 miles (1.1 km)
- Path width
- 25 yards (23 m)
- Deaths
- 0
- Injuries
- 0
- Property damage
- $20,000
- County
- Osceola County
- Touchdown point
- 28.317, -81.364
- Lift-off point
- 28.322, -81.354
- Record number
- 1707071829-01
What the Weather Service recorded
The Atlantic and Gulf coast sea breeze boundaries collided from south-central Orange County to western Osceola County during the early evening. During the initial collision and prior to shower and thunderstorm development, a brief tornado was observed from the Orlando International Airport tower and photographed by several people at the airport. Showers and thunderstorms then rapidly formed along the north-south boundary collision zone and a funnel cloud was observed by many citizens and weather spotters in Kissimmee. Shortly thereafter, the funnel cloud developed into a tornado and produced minor damage to several homes within two adjacent subdivisions.
Numerous residents within the Buena Ventura Lakes region of Kissimmee observed a funnel cloud approach from the southwest and become a tornado as it traveled through two adjacent subdivisions for less than 0.75 miles. Eyewitnesses described swirling debris at the surface and swirling water within an adjacent lake, with a visible funnel farther aloft to the cloud base. Several single family homes sustained minor damage, consisting of several removed shingles, and damage to carports and pool screen enclosures. A large mango tree fell onto one home resulting in roof damage. The tornado path and intensity (EF-0, winds estimated at 60-70 mph) were determined after examining damage photos from Osceola County Emergency Management and the Orlando news media and interviewing several eyewitnesses. DI2, DOD1, EXP; DI2, DOD2, LB-EXP.
From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.
The warnings
2 minutes of warning. NWS MLB issued a tornado warning for this county at 00:27 UTC, 2 minutes before the tornado touched down, in force until 00:45 UTC.
| Issued (UTC) | Expired | Product | Office |
|---|---|---|---|
| 00:27 UTC | 00:45 UTC | Tornado Warning | MLB |
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 19:27 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.
Cape Canaveral, FL (KXMR), 00:00Z
0.5 hours before the tornado, 86 km from the path. July 8, 2017.
- Mixed-layer CAPE
- 735 J/kg
- Mixed-layer CIN
- -89 J/kg
- Surface CAPE
- 2726 J/kg
- Mixed-layer LCL
- 1381 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 42 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
- 0-3 km lapse rate
- 6.7 K/km
Cape Canaveral, FL (KXMR), 12:00Z
11.5 hours after it, 86 km from the path. July 8, 2017.
- Mixed-layer CAPE
- 1453 J/kg
- Mixed-layer CIN
- -34 J/kg
- Surface CAPE
- 3253 J/kg
- Mixed-layer LCL
- 950 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- -2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
- 0-3 km lapse rate
- 5.4 K/km
The surface observations
Kissimmee Municipal Airport/Orlando (ISM), 9 km from the path, in the two hours either side.
| Time (UTC) | Temp (°F) | Dew point (°F) | Wind | Gust (kt) | Pressure (mb) | Weather |
|---|---|---|---|---|---|---|
| 22:30 UTC | 160° 6 kt | 1017.3 | ||||
| 22:35 UTC | 170° 7 kt | 1017.3 | ||||
| 22:40 UTC | 180° 5 kt | 1017.6 | ||||
| 22:45 UTC | 180° 6 kt | 1017.6 | ||||
| 22:50 UTC | 180° 6 kt | 1017.3 | ||||
| 22:55 UTC | 170° 5 kt | 1017.6 | ||||
| 22:56 UTC | 93 | 71 | 160° 6 kt | 1017.3 | ||
| 23:00 UTC | 180° 6 kt | 1017.6 | ||||
| 23:05 UTC | 170° 6 kt | 1017.6 | ||||
| 23:10 UTC | 150° 5 kt | 1017.3 | ||||
| 23:15 UTC | 180° 4 kt | 1017.3 | ||||
| 23:20 UTC | 180° 4 kt | 1017.3 | ||||
| 23:25 UTC | 190° 3 kt | 1017.6 | ||||
| 23:30 UTC | 1017.6 | |||||
| 23:35 UTC | 1017.6 | |||||
| 23:40 UTC | 1017.6 | |||||
| 23:45 UTC | 1017.6 | |||||
| 23:50 UTC | 310° 9 kt | 1017.3 | ||||
| 23:55 UTC | 1016.9 | |||||
| 23:56 UTC | 88 | 74 | 320° 15 kt | 1016.9 | ||
| 00:00 UTC | 1017.3 | |||||
| 00:04 UTC | 87.8 | 73.4 | 320° 10 kt | 1017.3 | TS | |
| 00:05 UTC | 1017.3 | |||||
| 00:10 UTC | 310° 8 kt | 1017.6 | ||||
| 00:15 UTC | 170° 3 kt | 1017.9 | HZ | |||
| 00:20 UTC | 1017.9 | +RA | ||||
| 00:25 UTC | 80.6 | 71.6 | 130° 16 kt | 33 | 1019 | +TSRA |
| 00:30 UTC | 1019.3 | +RA | ||||
| 00:35 UTC | 110° 10 kt | 1019.6 | +RA BR | |||
| 00:40 UTC | 120° 7 kt | 1019.6 | +RA BR | |||
| 00:45 UTC | 73.4 | 69.8 | 120° 10 kt | 1019.6 | +TSRA BR | |
| 00:50 UTC | 120° 10 kt | 1019.3 | +RA BR | |||
| 00:54 UTC | 73.4 | 71.6 | 100° 8 kt | 1019 | +TSRA BR | |
| 00:55 UTC | 110° 8 kt | 1019 | +RA BR | |||
| 00:56 UTC | 74 | 71 | 120° 10 kt | 1019 | +TSRA BR | |
| 01:00 UTC | 1019 | +RA | ||||
| 01:03 UTC | 75.2 | 69.8 | 5 kt | 1019 | +TSRA | |
| 01:05 UTC | 40° 8 kt | 1019 | +RA | |||
| 01:09 UTC | 75.2 | 71.6 | 70° 6 kt | 1019 | VCTS RA BR | |
| 01:10 UTC | 70° 6 kt | 1019 | RA BR | |||
| 01:15 UTC | 100° 7 kt | 1019 | -RA | |||
| 01:20 UTC | 100° 8 kt | 1019 | -RA | |||
| 01:25 UTC | 75.2 | 69.8 | 120° 6 kt | 1019 | -RA | |
| 01:30 UTC | 0° 0 kt | 1019 | -RA | |||
| 01:35 UTC | 100° 3 kt | 1019 | ||||
| 01:40 UTC | 70° 5 kt | 1019 | ||||
| 01:45 UTC | 0° 0 kt | 1019 | ||||
| 01:50 UTC | 0° 0 kt | 1019 | ||||
| 01:55 UTC | ||||||
| 01:56 UTC | 77 | 71 | ||||
| 02:00 UTC | ||||||
| 02:05 UTC | 0° 0 kt | 1019 | ||||
| 02:10 UTC | 200° 3 kt | 1019 | ||||
| 02:15 UTC | 180° 4 kt | 1019.3 | ||||
| 02:20 UTC | 0° 0 kt | 1019.3 | ||||
| 02:25 UTC | 0° 0 kt | 1019.3 |
From the Iowa Environmental Mesonet's archive of airport observations.
The radar
The Melbourne radar (KMLB), 73 km away, was scanning. The volume nearest the touchdown began at 00:30 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 |
|---|---|---|---|---|
| 00:00 UTC | TORNADO | 2 Sw Orlando Internatio | Orange, FL | AIR TRAFFIC CONTROL TOWER REPORTS A BRIEF TORNADO TOUCHDOWN THAT QUICKLY DISSIPATED. NO DAMAGE WAS REPORTED. |
| 00:15 UTC | FUNNEL CLOUD | Kissimmee | Osceola, FL | MULTIPLE REPORTS OF A FUNNEL CLOUD IN KISSIMMEE TO BUENA VENTURA LAKES FROM 815PM TO 830PM EDT. |
| 00:30 UTC | TORNADO | 6 Ene Buena Ventura Lak | Orange, FL | EMERGENCY MANAGER REPORTS A BRIEF TOUCHDOWN OF A TORNADO AT 417 AND LAKE NONA BLVD |
| 00:30 UTC | TORNADO | Buena Ventura Lakes | Osceola, FL | EMERGENCY MANAGER REPORTS A BRIEF TOUCHDOWN OF A TORNADO |
From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.
This ground now
The live radar over the trackEvery 2017 tornado in FloridaEvery tornado in Florida since 1950Warnings in force in Florida nowThe forecast where you are
The other tornadoes of July 7, 2017
2 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.