Tornadoes · United States · Florida · 2020

EF1 tornado, Jack Lee Island, Florida, April 23, 2020

This EF1 tornado ran 0.5 miles across Taylor County on April 23, 2020, touching down at 7:56 PM EDT and reaching 100 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 mph

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

  2. EF186 to 110 mphthis tornado

    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
EF1
Date
April 23, 2020
Touchdown
7:56 PM EDT (23:56 UTC)
Lifted
8:00 PM EDT (00:00 UTC)
On the ground
4 minutes
Path length
0.5 miles (0.7 km)
Path width
100 yards (91 m)
Deaths
0
Injuries
0
Property damage
$50,000
County
Taylor County
Touchdown point
29.830, -83.600
Lift-off point
29.829, -83.592
Record number
2004231756-01

The damage survey

1 damage points were recorded along this path by NWS TAE, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 100 mph.

  • A tornadic water spout came ashore into Keaton Beach and severely damaged a boat rental facility pulling concrete pilings out of the ground. The tornado lifted shortly after that.

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

Another in a series of strong upper level troughs pushed through the southeast states, resulting in another enhanced risk of severe storms from the Storm Prediction Center. The tri-state area was hit fairly hard again, with numerous reports of wind damage documented along with several tornadoes.

A tornadic water spout came ashore into Keaton Beach and severely damaged a boat rental facility pulling concrete pilings out of the ground. The tornado lifted shortly after that.

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

The warnings

26 minutes of warning. NWS TAE issued a tornado warning for this county at 23:30 UTC, 26 minutes before the tornado touched down, in force until 00:30 UTC.

The county was under a tornado watch, issued at 19:47 UTC and running to 00:46 UTC.

Issued (UTC)ExpiredProductOffice
12:00 UTC09:00 UTCCoastal Flood AdvisoryTAE
19:47 UTC00:46 UTCTornado WatchTAE
22:24 UTC23:30 UTCSevere Thunderstorm WarningTAE
22:54 UTC23:15 UTCTornado WarningTAE
23:09 UTC00:15 UTCSevere Thunderstorm WarningTAE
23:30 UTC00:30 UTCTornado WarningTAE
00:08 UTC00:45 UTCSevere Thunderstorm WarningTAE
00:21 UTC00:27 UTCTornado WarningTAE
03:58 UTC05:15 UTCSevere Thunderstorm WarningTAE

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 Enhanced Risk, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 19:53 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.

Tallahassee Rgnl, FL (KTLH), 12:00Z

11.9 hours before the tornado, 93 km from the path. April 23, 2020.

Skew-T log-pSkew-T log-p diagram, Tallahassee Rgnl, FL at 12:00Z on 2020-04-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 0 joules per kilogram, CIN -82887, lifted condensation level 1318 meters above ground. Wind barbs in knots down the right edge.LCL10008507005003002001001 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, Tallahassee Rgnl, FL at 12:00Z on 2020-04-23The 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 455 square meters per square second, 0 to 6 km bulk shear 71 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
0 J/kg
Mixed-layer CIN
-82887 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
1318 m above ground
0-6 km bulk shear
71 kt
0-1 km bulk shear
34 kt
0-1 km storm-relative helicity
455 m²/s²
0-3 km storm-relative helicity
663 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
3.8 K/km

Open this sounding in Storm Lab

The radar

The Tallahassee radar (KTLH), 95 km away, was scanning. The volume nearest the touchdown began at 23:58 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
23:56 UTCTORNADOJack Lee IslandTaylor, FLEF1 TORNADO BASED ON STORM SURVEY.
23:58 UTCTSTM WND DMG1 E Adams BeachTaylor, FLTIN ROOF DAMAGED. TORNADO POSSIBLE.
00:15 UTCTSTM WND DMGSalemTaylor, FLTREE DOWN.
00:30 UTCTSTM WND DMG1 E JenaDixie, FLDOWNED POWERLINE CAUGHT TREE ON FIRE.
00:50 UTCTSTM WND DMG3 Wsw MidwayLafayette, FLTREES AND POWER LINES DOWN IN THE COUNTY.

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

This ground now

The live radar over the trackEvery 2020 tornado in FloridaEvery tornado in Florida since 1950Warnings in force in Florida nowThe forecast where you are

The other tornadoes of April 23, 2020

29 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
April 231:08 AM CDTEF2Avoyelles Parish, LA3.6100$1.0 million
April 231:20 AM CDTEF1Avoyelles Parish, LA1.1100$50,000
April 231:51 AM CDTEF1Acadia Parish, LA9.5150$50,000
April 231:57 AM CDTEF0Rankin, MS11.41,230$30,000
April 233:04 AM CDTEF2Pike, MS20.0700
April 233:20 AM CDTEF2Pike, MS6.8700$100,000
April 233:57 AM CDTEF0Marion, MS6.5200$20,000
April 234:14 AM CDTEF2Jones, MS16.92,640$300,000
April 234:33 AM CDTEF1Wayne, MS1.8350
April 236:17 AM CDTEF1George, MS2.3200
April 236:23 AM CDTEF1George, MS0.450
April 236:24 AM CDTEF1George, MS1.42501
April 236:37 AM CDTEF1Mobile, AL0.675
April 238:42 AM CDTEF0Covington, AL0.450
April 238:53 AM CDTEF0Covington, AL0.025
April 2312:05 PM EDTEF1Mitchell, GA2.4176$100,000
April 2312:34 PM EDTEF1Colquitt, GA37.2650$200,000
April 231:28 PM EDTEF0Lanier, GA2.250
April 232:05 PM EDTEF0Ware, GA9.050
April 232:59 PM EDTEF0Glynn, GA0.550
April 233:37 PM EDTEF0Camden, GA0.350
April 232:51 PM CDTEF1Okaloosa, FL2.750
April 233:13 PM CDTEF1Walton, FL9.1100$200,000
April 233:48 PM CDTEF2Washington, FL17.2400$500,000
April 234:00 PM CDTEF0Bay, FL13.475$50,000
April 234:09 PM CDTEF0Bay, FL0.950
April 236:22 PM EDTEF1Leon, FL10.6600$10,000
April 236:54 PM EDTEF1Wakulla, FL3.9100$25,000
April 239:11 PM EDTEF0Gilchrist, FL0.650

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.