Tornadoes · United States · Florida · 2020
EF0 tornado, Belle Glade, Florida, May 21, 2020
This EF0 tornado ran 0.3 miles across Palm Beach County on May 21, 2020, touching down at 2:45 PM 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.
EF065 to 85 mphthis tornado
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
EF186 to 110 mph
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
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.
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.
EF4166 to 200 mph
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
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.
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
- May 21, 2020
- Touchdown
- 2:45 PM EDT (18:45 UTC)
- Lifted
- 3:00 PM EDT (19:00 UTC)
- On the ground
- 15 minutes
- Path length
- 0.3 miles (0.4 km)
- Path width
- 25 yards (23 m)
- Deaths
- 0
- Injuries
- 0
- County
- Palm Beach County
- Touchdown point
- 26.677, -80.674
- Lift-off point
- 26.677, -80.674
- Record number
- 2005211245-01
What the Weather Service recorded
A rex block characterized by a deep upper-level low across the Tennessee Valley Region and an upper-level high across the Great Lakes Region gave way to an upper-level cold pocket across the southeastern portions of the United states. Simultaneously, a mid-level vorticity lobe rotated across the region which also aided in an increase of convection, especially due to the combination of lingering boundaries and sea breeze formation. Forecast soundings also showed an inverted V as well as favorable DCAPE values, which were supportive for a few damaging wind gusts with the taller, more robust, updrafts contained hail. Furthermore, tornado potential increased with favorable low level winds and shear across land. Finally, with an overall weaker flow aloft and PWATs approaching the 2 inch mark, some localized flooding occurred.
The Palm Beach Sheriffs Office and multiple trained spotters reported that a landspout tornado occurred in an open field near 800 S. Main Street in Belle Glade. No damage was noted.
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) | Expired | Product | Office |
|---|---|---|---|
| 00:46 UTC | 02:45 UTC | Flood Advisory | MFL |
| 17:13 UTC | 17:49 UTC | Severe Thunderstorm Warning | MFL |
| 18:07 UTC | 18:45 UTC | Severe Thunderstorm Warning | MFL |
| 18:50 UTC | 19:15 UTC | Tornado Warning | MFL |
| 19:05 UTC | 20:00 UTC | Severe Thunderstorm Warning | MFL |
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 16:01 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
6.8 hours before the tornado, 103 km from the path. May 21, 2020.
- Mixed-layer CAPE
- 2035 J/kg
- Mixed-layer CIN
- -24 J/kg
- Surface CAPE
- 3283 J/kg
- Mixed-layer LCL
- 926 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 12 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
- 0-3 km lapse rate
- 5.5 K/km
Miami, FL (KMFL), 00:00Z
5.2 hours after it, 103 km from the path. May 22, 2020.
- Mixed-layer CAPE
- 1545 J/kg
- Mixed-layer CIN
- -22 J/kg
- Surface CAPE
- 3254 J/kg
- Mixed-layer LCL
- 1150 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 12 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
- 0-3 km lapse rate
- 6.7 K/km
The radar
The Miami radar (KAMX), 121 km away, was scanning. The volume nearest the touchdown began at 18:45 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) | Report | Where | County | Remark |
|---|---|---|---|---|
| 17:40 UTC | HAIL 0.88 | 2 W Coral Springs | Broward, FL | A TRAINED SPOTTER CALLED TO REPORT NICKEL SIZE HAIL NEAR SAMPLE ROAD AND SAWGRASS EXPRESSWAY. |
| 18:05 UTC | HAIL 1 | 1 Wnw Coral Springs | Broward, FL | VIDEO VIA TWITTER REPORTS OF QUARTER SIZE HAIL NEAR SAMPLE ROAD AND SAWGRASS EXPY IN CORAL SPRINGS. |
| 18:10 UTC | HAIL 0.75 | Wellington | Palm Beach, FL | SOCIAL MEDIA REPORT OF HAIL UP TO THE SIZE OF PENNIES IN WELLINGTON. TIME ESTIMATED FROM RADAR. |
| 18:45 UTC | TORNADO | 1 Ssw Belle Glade | Palm Beach, FL | MULTIPLE TRAINED SPOTTERS IN BELLE GLADE CALLED TO REPORT A LAND SPOUT TORNADO OCCURRING IN AN OPEN FIELD. |
| 19:00 UTC | TORNADO | 1 N Belle Glade | Palm Beach, FL | PALM BEACH SHERIFFS OFFICE REPORTS THAT THE TORNADO ON THE GROUND AT 800 MAIN STREET IN BELLE GLADE. IT HAS SINCE LIFTED AS IT MOVED TOWARD SOUTH BAY. |
| 19:10 UTC | TSTM WND DMG | 1 Wsw Belle Glade | Palm Beach, FL | AN OFF DUTY NWS EMPLOYEE WAS REPORTED A LARGE TREE DOWN IN BELLE GLADE ASSOCIATED WITH A THUNDERSTORM THAT MOVED THROUGH THE AREA. TIME ESTIMATED VIA RADAR. |
| 20:15 UTC | MARINE TSTM WIND 39 | 11 Se Brighton Seminole | Amz610, FL | A MARINE THUNDERSTORM WIND GUST OF 39 MPH / 34 KNOTS WAS RECORDED BY THE SFWMD MESONET SITE L005 LOCATED OVER THE WESTERN END OF LAKE OKEECHOBEE. |
| 20:15 UTC | MARINE TSTM WIND 47 | 8 W Pahokee | Amz610, FL | A MARINE THUNDERSTORM WIND GUST OF 47 MPH / 41 KNOTS WAS RECORDED BY THE SFWMD MESONET SITE L006 LOCATED OVER THE SOUTHERN END OF LAKE OKEECHOBEE. |
| 20:30 UTC | MARINE TSTM WIND 40 | 10 Nw Pahokee | Amz610, FL | A MARINE THUNDERSTORM WIND GUST OF 40 MPH / 35 KNOTS WAS RECORDED BY THE SFWMD MESONET SITE LZ40 LOCATED OVER THE CENTER OF LAKE OKEECHOBEE. |
| 20:30 UTC | MARINE TSTM WIND 41 | 7 W Pahokee | Amz610, FL | A MARINE THUNDERSTORM WIND GUST OF 41 MPH / 36 KNOTS WAS RECORDED BY THE SFWMD MESONET SITE L006 LOCATED OVER THE SOUTHERN END OF LAKE OKEECHOBEE. |
| 20:30 UTC | MARINE TSTM WIND 46 | 11 Se Brighton Seminole | Amz610, FL | A MARINE THUNDERSTORM WIND GUST OF 46 MPH / 40 KNOTS WAS RECORDED BY THE SFWMD MESONET SITE L005 LOCATED OVER THE WESTERN END OF LAKE OKEECHOBEE. |
| 20:45 UTC | MARINE TSTM WIND 43 | 11 Se Brighton Seminole | Amz610, FL | A MARINE THUNDERSTORM WIND GUST OF 43 MPH / 37 KNOTS WAS RECORDED BY THE SFWMD MESONET SITE L005 LOCATED OVER THE WESTERN END OF LAKE OKEECHOBEE. |
| 21:36 UTC | FLOOD | Clewiston | Hendry, FL | AN OFF DUTY NWS EMPLOYEE REPORTS FLOODING OF ROADWAYS AND PARKING LOTS IN EASTERN PORTION OF CLEWISTON. |
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 May 21, 2020
9 more were confirmed in the United States that day.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| May 21 | 1:33 PM MDT | Unrated | Greeley, KS | 0.0 | 50 | |||
| May 21 | 3:56 PM EDT | EF1 | Hoke, NC | 0.2 | 200 | $50,000 | ||
| May 21 | 3:41 PM CDT | EF0 | Stanton, KS | 0.1 | 30 | |||
| May 21 | 3:15 PM MDT | EF0 | Hamilton, KS | 0.6 | 50 | |||
| May 21 | 3:15 PM MDT | EF0 | Hamilton, KS | 0.3 | 50 | |||
| May 21 | 3:47 PM MDT | Unrated | Prowers, CO | 2.0 | 25 | |||
| May 21 | 4:17 PM MDT | Unrated | Prowers, CO | 1.0 | 25 | |||
| May 21 | 5:06 PM MDT | EF0 | Hamilton, KS | 0.1 | 50 | |||
| May 21 | 7:11 PM CDT | Unrated | Kearny, KS | 1.8 | 150 |
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.