Tornadoes · United States · Florida · 2018

EF0 tornado, Coral Spgs, Florida, April 27, 2018

This EF0 tornado ran 2.0 miles across Broward County on April 27, 2018, touching down at 2:37 PM EDT and reaching 40 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
April 27, 2018
Touchdown
2:37 PM EDT (18:37 UTC)
Lifted
2:43 PM EDT (18:43 UTC)
On the ground
6 minutes
Path length
2.0 miles (3.2 km)
Path width
40 yards (37 m)
Deaths
0
Injuries
0
County
Broward County
Touchdown point
26.298, -80.267
Lift-off point
26.286, -80.238
Record number
1804271237-01

What the Weather Service recorded

A weak boundary lifting northward across the state and a cold front moving south down the peninsula brought numerous showers and thunderstorms across the region during the afternoon hours. As this activity interacted with the east coast seabreeze, several storms became severe, leading to a brief tornado and small hail in Broward County.

The tornado touched down south of the Sawgrass Expressway near Country Hills Elementary School just east of Coral Springs Drive. The tornado then continued east-southeast along a discontinuous path, damaging the tops of trees and snapping and breaking off branches and other vegetation, as well as toppling power lines. The tornado damaged a street sign near the intersection of University Drive and Wiles Road, before lifting just south of Wiles Road near NW 85th Avenue.

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.

Issued (UTC)ExpiredProductOffice
18:39 UTC18:58 UTCTornado WarningMFL
18:55 UTC19:30 UTCSevere Thunderstorm WarningMFL
20:30 UTC22:19 UTCFlood AdvisoryMFL

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 Marginal Risk. The outlook in force was issued at 16:26 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), 12:00Z

6.6 hours before the tornado, 53 km from the path. April 27, 2018.

Skew-T log-pSkew-T log-p diagram, Miami, FL at 12:00Z on 2018-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 59 joules per kilogram, CIN -203, lifted condensation level 1274 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 2018-04-27The 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 51 square meters per square second, 0 to 6 km bulk shear 33 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
59 J/kg
Mixed-layer CIN
-203 J/kg
Surface CAPE
165 J/kg
Mixed-layer LCL
1274 m above ground
0-6 km bulk shear
33 kt
0-1 km bulk shear
15 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
61 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.9 K/km

Open this sounding in Storm Lab

The surface observations

Fort Lauderdale (FXE), 13 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
16:40 UTC130° 7 kt1012.5
16:45 UTC60° 4 kt1012.5
16:50 UTC120° 9 kt1012.2
16:53 UTC8570130° 9 kt1012.2
16:55 UTC140° 7 kt1012.2
17:00 UTC170° 8 kt1012.2
17:05 UTC130° 4 kt1012.2
17:10 UTC120° 8 kt1012.2
17:15 UTC120° 7 kt1011.9
17:20 UTC90° 8 kt1011.9
17:25 UTC70° 5 kt1011.9
17:30 UTC130° 10 kt1011.5
17:35 UTC120° 9 kt1011.5
17:40 UTC110° 9 kt141011.5
17:45 UTC110° 9 kt1011.5
17:50 UTC120° 8 kt1011.2
17:53 UTC8669120° 12 kt1011.2
17:55 UTC110° 11 kt161011.5
18:00 UTC120° 10 kt1011.5
18:05 UTC130° 11 kt1011.2
18:10 UTC110° 14 kt1011.2
18:15 UTC130° 11 kt1010.8
18:20 UTC140° 11 kt1010.8
18:25 UTC140° 12 kt1010.8-RA
18:30 UTC130° 13 kt1010.8-RA
18:35 UTC8173150° 11 kt1010.5VCTS -RA
18:40 UTC140° 10 kt1010.5-RA
18:45 UTC150° 13 kt1010.2
18:50 UTC150° 14 kt1010.5
18:53 UTC8268140° 14 kt1010.8TS
18:55 UTC 1011.2
19:00 UTC 1010.8
19:05 UTC360° 8 kt1011.2
19:10 UTC10° 5 kt1010.8
19:15 UTC360° 8 kt1010.5
19:20 UTC350° 9 kt1010.5
19:25 UTC 1010.5
19:30 UTC40° 9 kt1010.2
19:35 UTC 1010.2
19:37 UTC776940° 8 kt161010.2VCTS -RA
19:40 UTC70° 7 kt1009.8-RA
19:44 UTC777080° 5 kt1010.5-TSRA
19:45 UTC80° 5 kt1010.5-RA
19:50 UTC70° 6 kt1010.5-RA
19:53 UTC777160° 8 kt1010.5-TSRA
19:55 UTC 1010.5-RA
20:00 UTC140° 8 kt1010.5-RA
20:05 UTC0° 0 kt1010.5RA
20:10 UTC 1011.5+RA BR
20:11 UTC7370300° 16 kt221011.5+TSRA BR
20:15 UTC310° 12 kt1011.5+RA BR
20:20 UTC310° 10 kt1011.5+RA BR
20:25 UTC290° 5 kt1011.5+RA BR
20:26 UTC6969300° 5 kt191011.5VCTS RA BR
20:30 UTC350° 4 kt1011.5+RA BR
20:33 UTC6969320° 4 kt1011.9VCTS -RA BR
20:35 UTC0° 0 kt1011.9-RA BR

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

The radar

The Miami radar (KAMX), 77 km away, was scanning. The volume nearest the touchdown began at 18:37 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
18:37 UTCTSTM WND GST 501 Ese ParklandBroward, FLA THUNDERSTORM WIND GUST OF 50 MPH / 43 KNOTS WAS RECORDED BY THE WEATHERBUG MESONET...PRKLN... LOCATED AT WESTGLADES MS AT 237PM EDT.
18:37 UTCTORNADO2 Wsw ParklandBroward, FLUPDATE TO PREVIOUSLY REPORTED TORNADO... THE NWS CONDUCTED A STORM SURVEY AND CAN CONFIRM AN EF0 TORNADO TOUCHED DOWN IN CORAL SPRINS THIS AFTERNOON. DAMAGE WAS MOSTLY TO TREES AND VEGETATION. THE TOP OF TREES HAD TREE B
18:38 UTCTORNADO1 Ene Coral SpringsBroward, FLTHIS IS A PRELIMINARY REPORT... A TRAINED SPOTTER CALLED TO REPORTED A TORNADO IN THE CORAL SPRINGS/ MARGATE AREA NEAR UNIVERSITY DRIVE AND WILES ROAD. ONCE AGAIN THIS IS A PRELIMINARY REPORT
19:00 UTCHAIL 0.752 Nw North LauderdaleBroward, FLA TRAINED STORM SPOTTER CALLED TO REPORT DIME SIZE HAIL ASSOCIATED WITH A THUNDERSTORM NEAR ATLANTIC BLVD AND UNIVERSITY DRIVE IN NORTHERN BROWARD COUNTY. TIME ESTIMATED
19:07 UTCTSTM WND GST 501 Wsw Deerfield BeachBroward, FLA THUNDERSTORM WIND GUST OF 51 MPH / 44 KNOTS WAS RECORDED BY THE WEATHERBUG MESONET SITE... DFBS1 ... LOCATED AT THE DEERFIELD BEACH FIRE RESCUE STATION102 MOC AT 307 PM EDT.
19:16 UTCTSTM WND GST 502 W Lighthouse PointBroward, FLA THUNDERSTORM WIND GUST OF 50 MPH / 43 KNOTS WAS RECORDED BY THE WEATHERBUG MESONET SITE...PBNBM... LOCATED AT NORTH BROWARD MEDICAL CENTER AT 316 PM EDT.

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

This ground now

The live radar over the trackEvery 2018 tornado in FloridaEvery tornado in Florida since 1950Warnings in force in Florida nowThe forecast where you are

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.