Tornadoes · United States · Florida · 2024

EF0 tornado, Bowling Green, Florida, August 4, 2024

This EF0 tornado ran 1.2 miles across Hardee and Polk counties on August 4, 2024, touching down at 1:25 PM EDT and reaching 25 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.

  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 4, 2024
Touchdown
1:25 PM EDT (17:25 UTC)
Lifted
1:27 PM EDT (17:27 UTC)
On the ground
2 minutes
Path length
1.2 miles (1.9 km)
Path width
25 yards (23 m)
Deaths
0
Injuries
0
Counties
Hardee and Polk counties
Touchdown point
27.640, -81.850
Lift-off point
27.655, -81.859
Record number
2408041125-01

What the Weather Service recorded

Hurricane Debby made landfall north of the local area along the Big Bend region of Florida near Steinhatchee around 7 AM EST on August 5th as a Category 1 hurricane with maximum sustained winds of 80 mph and a minimum pressure of 979 mb. Despite Debby���s track west of the Florida peninsula, impacts overspread the area from coastal locations spreading inland.|Storm surge affected the immediate coast from Ft. Myers northward through Cedar Key, where water levels peaked over 4 feet above normally dry ground across the upper Nature Coast and the Cedar Key area. Wind gusts of up to 60 to 70 mph affected much of the western Florida coast, with the strongest winds occurring along immediate coastal areas from around Tampa and St. Petersburg northward across Nature Coast locations, producing generally minor damage along with power outages. Torrential rainfall accompanied Debby as the rainbands east of its center moved across the area. Totals as high as 15 to 20 inches were reported, with hardest hit west-central and southwest Florida areas requiring numerous water rescues from flooded vehicles and homes as a result of extensive flash flooding and subsequent river flooding, and at least one official river gauge site established a new record crest. Multiple supercells embedded within outer rain bands east of Debby���s center produced at least 3 tornadoes across the area, however, associated damage remained relatively minor. |Debby���s overall impacts across the western Florida peninsula resulted in 2 direct fatalities and 3 indirect fatalities, with numerous homes and additional businesses receiving damage from freshwater flash and river flooding.

A long-lived supercell embedded within an outer rainband associated with Tropical Storm Debby tracked north-northwestward across much of interior southwest Florida, including parts of Lee, Charlotte and DeSoto counties, before again exhibiting signs of increased organization as it moved west of Zolfo Springs in Hardee County around 12:08 EST. Continuing north-northwest, and despite a degrading radar presentation, the storm passed west of Bowling Green where a tornado was spotted and reported via a picture submitted by a NWS volunteer, around 12:25 EST. The tornado track continued into Polk County at 12:26 EST, where it would continue for approximately another two-thirds of a mile before dissipating north of County Line Rd. Maximum winds were estimated around 75 mph.

Continuation of the tornado track that originated in Hardee County after a long-lived supercell embedded within an outer rainband associated with Tropical Storm Debby tracked north-northwestward across much of interior southwest Florida, including parts of Lee, Charlotte and DeSoto counties, before a tornado was spotted west of Bowling Green and reported via a picture submitted by a NWS volunteer, around 12:25 EST. The tornado crossed into Polk County at 12:26 EST before it was estimated to have dissipated shortly thereafter north of County Line Rd, after traversing a mostly rural area. Maximum winds were estimated around 75 mph.

From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.

The warnings

26 minutes of warning. NWS TBW issued a tornado warning for this county at 16:59 UTC, 26 minutes before the tornado touched down, in force until 17:30 UTC.

The county was under a tornado watch, issued at 14:57 UTC and running to 00:00 UTC.

Issued (UTC)ExpiredProductOffice
00:29 UTC00:00 UTCFlood WatchTBW
12:42 UTC13:15 UTCTornado WarningTBW
14:19 UTC14:45 UTCTornado WarningTBW
14:45 UTC15:15 UTCTornado WarningTBW
14:57 UTC00:00 UTCTornado WatchTBW
15:15 UTC15:45 UTCTornado WarningTBW
15:30 UTC16:00 UTCTornado WarningTBW
15:59 UTC16:30 UTCTornado WarningTBW
16:59 UTC17:30 UTCTornado WarningTBW
17:36 UTC18:00 UTCTornado WarningTBW
00:00 UTC09:57 UTCTornado WatchTBW
02:15 UTC02:32 UTCTornado WarningTBW

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 Slight Risk, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 16:23 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.

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

5.4 hours before the tornado, 54 km from the path. August 4, 2024.

Skew-T log-pSkew-T log-p diagram, Tampa Bay, FL at 12:00Z on 2024-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 374 joules per kilogram, CIN -44, lifted condensation level 679 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 2024-08-04The 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 362 square meters per square second, 0 to 6 km bulk shear 24 knots.193958Sfc1 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
374 J/kg
Mixed-layer CIN
-44 J/kg
Surface CAPE
1420 J/kg
Mixed-layer LCL
679 m above ground
0-6 km bulk shear
24 kt
0-1 km bulk shear
44 kt
0-1 km storm-relative helicity
362 m²/s²
0-3 km storm-relative helicity
327 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.1
0-3 km lapse rate
4.5 K/km

Open this sounding in Storm Lab

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

6.6 hours after it, 54 km from the path. August 5, 2024.

Skew-T log-pSkew-T log-p diagram, Tampa Bay, FL at 00:00Z on 2024-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 881 joules per kilogram, CIN -1, lifted condensation level 467 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 2024-08-05The 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 500 square meters per square second, 0 to 6 km bulk shear 42 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
881 J/kg
Mixed-layer CIN
-1 J/kg
Surface CAPE
1361 J/kg
Mixed-layer LCL
467 m above ground
0-6 km bulk shear
42 kt
0-1 km bulk shear
53 kt
0-1 km storm-relative helicity
500 m²/s²
0-3 km storm-relative helicity
550 m²/s²
Significant tornado parameter
1.8
Supercell composite
12.4
0-3 km lapse rate
4.7 K/km

Open this sounding in Storm Lab

The surface observations

Bartow (BOW), 34 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
16:45 UTC8675.2120° 18 kt1012.5
18:15 UTC78.877150° 12 kt1012.5
18:50 UTC78.877100° 13 kt1011.5

From the Iowa Environmental Mesonet's archive of airport observations.

The radar

The Tampa radar (KTBW), 54 km away, was scanning. The volume nearest the touchdown began at 17:27 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
16:25 UTCTORNADO2 W Bowling GreenHardee, FLNWS student volunteer spotter picture of tornado on ground. Location and time based on spotter position and radar warned tornado location.
17:58 UTCTORNADO4 Sw BartowPolk, FLSpotter video of tornado on ground for around 2 minutes. Location and time based on spotter position and radar warned tornado location.

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 August 4, 2024

4 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
August 42:58 PM EDTEF0Polk, FL1.525
August 46:50 PM EDTEF0Pinellas, FL2.250$25,000
August 47:40 PM EDTEF1Union, FL0.220
August 47:56 PM EDTEF0Columbia, FL1.420

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.