Tornadoes · United States · Florida · 2013

EF0 tornado, Miramar to Loxahatchee, Florida, June 6, 2013

From Miramar to Loxahatchee, this EF0 tornado ran 20.7 miles across Broward and Palm Beach counties on June 6, 2013, touching down at 7:57 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
June 6, 2013
Touchdown
7:57 AM EDT (11:57 UTC)
Lifted
8:40 AM EDT (12:40 UTC)
On the ground
43 minutes
Path length
20.7 miles (33.4 km)
Path width
25 yards (23 m)
Deaths
0
Injuries
0
Counties
Broward and Palm Beach counties
Touchdown point
26.224, -80.485
Lift-off point
26.510, -80.387
Record number
1306060557-01

What the Weather Service recorded

Tropical Storm Andrea moving across the northeast Gulf of Mexico produced outer rain bands that moved through South Florida resulting in scattered severe thunderstorms.

Storm chasers reported a tornado touching down just east of U.S. 27 about 6 miles north of Alligator Alley/I-75. The tornado likely crossed into Palm Beach County before lifting back up and dissipating. No damage was reported.

Storm chasers reported a tornado touching down just east of U.S. 27 about 6 miles north of Alligator Alley/I-75 in Broward County. The storm producing the tornado moved almost due north and the tornado likely crossed into Palm Beach County east of US 27 and southwest of Loxahatchee National Wildlife Refuge before lifting back up and dissipating. No 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. One was issued for the county at another hour that day.

The county was under a tornado watch, issued at 07:49 UTC and running to 15:00 UTC.

Issued (UTC)ExpiredProductOffice
07:49 UTC15:00 UTCTornado WatchMFL
07:50 UTC08:15 UTCTornado WarningMFL
08:21 UTC08:45 UTCTornado WarningMFL
12:00 UTC12:30 UTCTornado WarningMFL
15:05 UTC22:44 UTCTornado WatchMFL

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 06:28 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.

Miami, FL (KMFL), 00:00Z

12.0 hours before the tornado, 63 km from the path. June 6, 2013.

Skew-T log-pSkew-T log-p diagram, Miami, FL at 00:00Z on 2013-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 1865 joules per kilogram, CIN 0, lifted condensation level 618 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, Miami, FL at 00:00Z on 2013-06-06The 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 90 square meters per square second, 0 to 6 km bulk shear 35 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
1865 J/kg
Mixed-layer CIN
0 J/kg
Surface CAPE
2662 J/kg
Mixed-layer LCL
618 m above ground
0-6 km bulk shear
35 kt
0-1 km bulk shear
16 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
219 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.4
0-3 km lapse rate
6.3 K/km

Open this sounding in Storm Lab

Miami, FL (KMFL), 12:00Z

0.0 hours before the tornado, 63 km from the path. June 6, 2013.

Skew-T log-pSkew-T log-p diagram, Miami, FL at 12:00Z on 2013-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 1826 joules per kilogram, CIN -7, lifted condensation level 668 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, Miami, FL at 12:00Z on 2013-06-06The 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 183 square meters per square second, 0 to 6 km bulk shear 31 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
1826 J/kg
Mixed-layer CIN
-7 J/kg
Surface CAPE
2605 J/kg
Mixed-layer LCL
668 m above ground
0-6 km bulk shear
31 kt
0-1 km bulk shear
28 kt
0-1 km storm-relative helicity
183 m²/s²
0-3 km storm-relative helicity
216 m²/s²
Significant tornado parameter
1.0
Supercell composite
6.7
0-3 km lapse rate
5.6 K/km

Open this sounding in Storm Lab

The surface observations

Fort Lauderdale (FXE), 32 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
10:29 UTC80.677140° 13 kt1009.8-RA
10:44 UTC80.678.8130° 13 kt181009.5-RA
10:53 UTC8077140° 12 kt1009.8-RA
11:00 UTC80.678.8140° 11 kt1009.8-RA
11:53 UTC8077160° 12 kt171010.2
12:00 UTC80.677160° 10 kt171010.2
12:48 UTC80.678.8150° 7 kt1011.2
12:53 UTC8178150° 8 kt1011.2
13:53 UTC8378160° 12 kt181011.5

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

The radar

The Miami radar (KAMX), 84 km away, was scanning. The volume nearest the touchdown began at 11:57 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
10:45 UTCTORNADO 12 Nnw The AcreagePalm Beach, FL*** 1 INJ *** HOMES DAMAGED... TREES AND POWER POLES SNAPPED AND DOWNED. THE PATH LENGTH WAS 2 MILES AND THE PATH WIDTH WAS 50 TO 100 YARDS.
10:45 UTCTORNADO2 Nnw The AcreagePalm Beach, FL*** 1 INJ *** HOMES DAMAGED... TREES AND POWER POLES SNAPPED AND DOWNED.
11:02 UTCFUNNEL CLOUD3 Se Royal Palm BeachPalm Beach, FLPUBLIC REPORTED NEAR SOUTHERN BLVD AND STATE ROAD 7.
12:10 UTCTORNADO 012 Nw Markham ParkBroward, FLTORNADO TOUCHDOWN JUST EAST OF U.S. HIGHWAY 27 ABOUT 6 MILES NORTH OF ALLIGATOR ALLEY. TORNADO LIKELY CROSSED INTO SOUTHERN PALM BEACH COUNTY.
12:10 UTCTORNADO12 Nw Markham ParkBroward, FLMEDIA REPORTS ONGOING TORNADO NORTHEAST OF HIGHWAY 27.

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

This ground now

The live radar over the trackEvery 2013 tornado in FloridaEvery tornado in Florida since 1950Warnings in force in Florida nowThe forecast where you are

The other tornadoes of June 6, 2013

9 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
June 62:47 AM EDTEF0Manatee, FL1.550$50,000
June 63:18 AM EDTEF0Palm Beach, FL0.625
June 63:27 AM EDTEF0Hillsborough, FL9.850$36,000
June 66:45 AM EDTEF1Palm Beach, FL2.01001
June 610:03 AM EDTEF0Pinellas, FL1.950$20,000
June 611:13 AM EDTEF0Sarasota, FL1.650$10,000
June 62:05 PM EDTEF0Lee, FL0.330
June 64:48 PM EDTEF1Duval, FL18.9704
June 61:22 AM EDTEF0Brunswick, NC0.120$10,000

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.