Tornadoes · United States · Florida · 2021

EF0 tornado, Woods, Florida, March 18, 2021

This EF0 tornado ran 0.0 miles across Liberty County on March 18, 2021, touching down at 8:40 AM 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
March 18, 2021
Touchdown
8:40 AM EDT (12:40 UTC)
Path length
0.0 miles (0.0 km)
Path width
25 yards (23 m)
Deaths
0
Injuries
0
County
Liberty County
Touchdown point
30.360, -84.900
Lift-off point
30.360, -84.900
Record number
2103180640-01

What the Weather Service recorded

A strong spring cold front moved through the tri-state region. A squall line preceded the front with scattered reports of severe weather, including a few tornadoes.

A brief tornadic debris signature was observed on dual-pol radar in a forested area with tree damage. No structural damage was reported.

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.

The county was under a tornado watch, issued at 11:55 UTC and running to 15:23 UTC.

Issued (UTC)ExpiredProductOffice
11:19 UTC12:45 UTCSevere Thunderstorm WarningTAE
11:55 UTC15:23 UTCTornado WatchTAE
12:19 UTC13:15 UTCSevere Thunderstorm WarningTAE
12:24 UTC13:15 UTCSevere Thunderstorm WarningTAE
13:11 UTC14:15 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 Slight Risk, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 05:48 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), 00:00Z

11.3 hours after it, 58 km from the path. March 19, 2021.

Skew-T log-pSkew-T log-p diagram, Tallahassee Rgnl, FL at 00:00Z on 2021-03-19Temperature 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 -89746, lifted condensation level 2163 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 00:00Z on 2021-03-19The 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 71 square meters per square second, 0 to 6 km bulk shear 72 knots.1939587897117Sfc1 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
-89746 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
2163 m above ground
0-6 km bulk shear
72 kt
0-1 km bulk shear
29 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
106 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
6.1 K/km

Open this sounding in Storm Lab

The radar

The Tallahassee radar (KTLH), 55 km away, was scanning. The volume nearest the touchdown began at 12:36 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
10:50 UTCTSTM WND GST 44Marianna Municipal A/PJackson, FLREPORTED AT MARIANNA MUNICIPAL AIRPORT.
12:40 UTCTORNADO5 W TelogiaLiberty, FLTDS OBSERVED ON RADAR IN FORESTED AREA WITH TREE DAMAGE. NO STRUCTURAL DAMAGE REPORTED.
13:15 UTCTSTM WND DMGFort BradenLeon, FLTREE DOWN ON POWERLINE ON OSCAR HARVEY ROAD AND STARR HILL ROAD.

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

This ground now

The live radar over the trackEvery 2021 tornado in FloridaEvery tornado in Florida since 1950Warnings in force in Florida nowThe forecast where you are

The other tornadoes of March 18, 2021

15 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
March 184:08 AM CDTEF1Crenshaw, AL0.5150
March 185:27 AM CDTEF1Houston, AL5.21501$200,000
March 185:49 AM CDTEF0Houston, AL2.150$4,000
March 186:02 AM CDTEF0Washington, FL1.625
March 186:02 AM CDTEF0Bay, FL3.9100$100,000
March 186:25 AM CDTEF1Bay, FL0.450$50,000
March 187:44 AM EDTEF0Early, GA3.150
March 188:49 AM EDTEF1Terrell, GA4.0200$20,000
March 189:06 AM EDTEF1Lee, GA10.450$250,000
March 181:38 PM EDTEF0Pierce, GA0.15
March 182:46 PM EDTEF0Gilchrist, FL12.5100
March 185:01 PM EDTEF1Guilford, NC2.6500$500,000
March 185:38 PM EDTEF1Alamance, NC2.5200$1.0 million
March 186:04 PM EDTEF1Orange, NC4.3200$150,000
March 189:27 PM EDTEF0Isle of Wight, VA4.2150$100,000

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.