Tornadoes · United States · Florida · 2021

EF0 tornado, Saint Johns County, Florida, February 14, 2021

This EF0 tornado ran 0.0 miles across Saint Johns County on February 14, 2021, touching down at 2:30 PM EST and reaching 10 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
February 14, 2021
Touchdown
2:30 PM EST (19:30 UTC)
Lifted
2:31 PM EST (19:31 UTC)
On the ground
1 minutes
Path length
0.0 miles (0.0 km)
Path width
10 yards (9 m)
Deaths
0
Injuries
0
County
Saint Johns County
Touchdown point
29.860, -81.497
Lift-off point
29.860, -81.497
Record number
2102141330-01

The damage survey

1 damage points were recorded along this path by NWS JAX, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF0. The highest wind the damage implies is 72 mph.

Survey points are preliminary and are the raw material the published rating was built from. Source: NWS Damage Assessment Toolkit.

The warnings

17 minutes of warning. NWS JAX issued a tornado warning for this county at 19:13 UTC, 17 minutes before the tornado touched down, in force until 19:45 UTC.

Issued (UTC)ExpiredProductOffice
19:13 UTC19:45 UTCTornado WarningJAX
19:40 UTC20:15 UTCTornado WarningJAX
20:21 UTC22:15 UTCFlood WarningJAX

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 16:24 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

7.5 hours before the tornado, 74 km from the path. February 14, 2021.

Skew-T log-pSkew-T log-p diagram, Jacksonville, FL at 12:00Z on 2021-02-14Temperature 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 -83769, lifted condensation level 644 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, Jacksonville, FL at 12:00Z on 2021-02-14The 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 310 square meters per square second, 0 to 6 km bulk shear 54 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
0 J/kg
Mixed-layer CIN
-83769 J/kg
Surface CAPE
8 J/kg
Mixed-layer LCL
644 m above ground
0-6 km bulk shear
54 kt
0-1 km bulk shear
27 kt
0-1 km storm-relative helicity
310 m²/s²
0-3 km storm-relative helicity
427 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
2.8 K/km

Open this sounding in Storm Lab

Jacksonville, FL (KJAX), 00:00Z

4.5 hours after it, 74 km from the path. February 15, 2021.

Skew-T log-pSkew-T log-p diagram, Jacksonville, FL at 00:00Z on 2021-02-15Temperature 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 -83894, lifted condensation level 492 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, Jacksonville, FL at 00:00Z on 2021-02-15The 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 13 square meters per square second, 0 to 6 km bulk shear 54 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
0 J/kg
Mixed-layer CIN
-83894 J/kg
Surface CAPE
4 J/kg
Mixed-layer LCL
492 m above ground
0-6 km bulk shear
54 kt
0-1 km bulk shear
30 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
38 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
2.4 K/km

Open this sounding in Storm Lab

The radar

The Jacksonville radar (KJAX), 72 km away, was scanning. The volume nearest the touchdown began at 19:31 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
19:29 UTCFUNNEL CLOUD2 S BakersvilleSt. Johns, FLRAIN WRAPPED FUNNEL CLOUD NEAR COUNTY ROAD 13A.
19:30 UTCTSTM WND DMG4 S BakersvilleSt. Johns, FLTREE LIMBS DOWN ACROSS COUNTY ROAD 13A AND COUNTY ROAD 214 NEAR THE MOLASSES JUNCTION. RADAR ESTIMATED TIME.
19:30 UTCTORNADO3 S BakersvilleSt. Johns, FLBRIEF TORNADO TOUCHDOWN SOUTH OF BAKERSVILLE NEAR COUNTY ROAD 13A. RECEIVED PHOTO FROM STORM CHASER OF A WEAK COLUMN APPEARING TO TOUCH THE GROUND. THE CHASER ALSO REPORTED TREE LIMBS DOWN ACROSS ROADS NEAR MOLASSES JUNC
19:54 UTCFUNNEL CLOUD3 Sse BakersvilleSt. Johns, FLRAIN WRAPPED FUNNEL CLOUD NEAR COUNTY ROAD 13A.
19:54 UTCHAIL 0.251 S BakersvilleSt. Johns, FLPEA SIZE HAIL NEAR COUNTY ROAD 13A NEAR BAKERSVILLE.
20:15 UTCFLOODBakersvilleSt. Johns, FLPONDING OF WATER ALONG MANY ROADS WEST OF I-95 IN ST. JOHNS COUNTY ESPECIALLY ALONG COUNTY ROAD 208.
21:24 UTCFLOOD4 Ssw EspanolaFlagler, FLFLAGLER FIRE RESCUE REPORTED AN ESTIMATED 4 TO 6 INCHES OF STANDING WATER ACROSS COUNTY ROAD 65.

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 February 14, 2021

1 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
February 141:07 AM ESTEF0Pinellas, FL1.330$20,000

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.