Tornadoes · United States · Florida · 2018

EF1 tornado, Hamburg to Cherry Lake, Florida, December 3, 2018

From Hamburg to Cherry Lake, this EF1 tornado ran 2.1 miles across Madison County on December 3, 2018, touching down at 2:34 AM EST and reaching 279 yards wide. It killed nobody, and did $25,000 of property damage.

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 mph

    Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

  2. EF186 to 110 mphthis tornado

    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
EF1
Date
December 3, 2018
Touchdown
2:34 AM EST (07:34 UTC)
Lifted
2:39 AM EST (07:39 UTC)
On the ground
5 minutes
Path length
2.1 miles (3.5 km)
Path width
279 yards (255 m)
Deaths
0
Injuries
0
Property damage
$25,000
County
Madison County
Touchdown point
30.609, -83.485
Lift-off point
30.630, -83.459
Record number
1812030134-01

The damage survey

30 damage points were recorded along this path by NWS TAE, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 100 mph.

  • Trampoline tossed into trees adjacent to field.
  • Two healthy trees uprooted. then cattle fence wrapped around it.
  • farm trailer moved 100 yards and flipped
  • mobile home slid off blocks

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

What the Weather Service recorded

A significant flooding and severe weather event unfolded over the tri-state area during early December as showers and thunderstorms spread northward across the area for multiple days. The most noteworthy impact over the weekend was heavy precipitation. Widespread rainfall totals reached 5-7 inches throughout the area with some localized heavier amounts near 10 inches. This resulted in flash flooding and river flooding across numerous counties. In addition, five tornadoes touched down, including one in southeast Alabama, two in southwest Georgia, one in the Florida panhandle, and one in the Florida big bend.

An EF1 tornado with 100 mph winds touched down in Madison County early Monday morning. The path length was 2.17 miles. One mobile home was shifted off its blocks. A small outbuilding was swept off its foundation and rolled several feet. Another mobile home nearby was shifted slightly and the blocks underneath are now tilted. Considerable tree damage was present throughout the path. There were no injuries or fatalities.

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
15:07 UTC15:30 UTCSevere Thunderstorm WarningTAE
21:27 UTC22:00 UTCSevere Thunderstorm WarningTAE
23:40 UTC19:25 UTCFlash Flood WatchTAE
07:38 UTC08:15 UTCTornado 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 Marginal Risk, with a 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 05:44 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

7.6 hours before the tornado, 83 km from the path. December 3, 2018.

Skew-T log-pSkew-T log-p diagram, Tallahassee Rgnl, FL at 00:00Z on 2018-12-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 1233 joules per kilogram, CIN -31, lifted condensation level 576 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, Tallahassee Rgnl, FL at 00:00Z on 2018-12-03The 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 101 square meters per square second, 0 to 6 km bulk shear 54 knots.1939587897Sfc1 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
1233 J/kg
Mixed-layer CIN
-31 J/kg
Surface CAPE
1275 J/kg
Mixed-layer LCL
576 m above ground
0-6 km bulk shear
54 kt
0-1 km bulk shear
28 kt
0-1 km storm-relative helicity
101 m²/s²
0-3 km storm-relative helicity
139 m²/s²
Significant tornado parameter
1.2
Supercell composite
6.7
0-3 km lapse rate
5.8 K/km

Open this sounding in Storm Lab

Tallahassee Rgnl, FL (KTLH), 12:00Z

4.4 hours after it, 83 km from the path. December 3, 2018.

Skew-T log-pSkew-T log-p diagram, Tallahassee Rgnl, FL at 12:00Z on 2018-12-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 2 joules per kilogram, CIN -131, lifted condensation level 573 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, Tallahassee Rgnl, FL at 12:00Z on 2018-12-03The 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 -23 square meters per square second, 0 to 6 km bulk shear 60 knots.1939587897Sfc1 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
2 J/kg
Mixed-layer CIN
-131 J/kg
Surface CAPE
1 J/kg
Mixed-layer LCL
573 m above ground
0-6 km bulk shear
60 kt
0-1 km bulk shear
23 kt
0-1 km storm-relative helicity
-23 m²/s²
0-3 km storm-relative helicity
97 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.2 K/km

Open this sounding in Storm Lab

The surface observations

Valdosta Regional (VLD), 26 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
05:35 UTC6969250° 4 kt1012.2+RA BR
05:40 UTC230° 3 kt1012.2+RA BR
05:44 UTC69690° 0 kt1011.5+RA BR
05:45 UTC240° 3 kt1011.9+RA BR
05:50 UTC0° 0 kt1011.9RA BR
05:53 UTC69690° 0 kt1011.9RA BR
05:55 UTC0° 0 kt1011.9RA BR
06:00 UTC0° 0 kt1012.2RA BR
06:03 UTC6969 3 kt1012.2TSRA BR
06:05 UTC320° 3 kt1012.2RA BR
06:10 UTC0° 0 kt1012.2RA BR
06:11 UTC69690° 0 kt1012.2TSRA BR
06:15 UTC300° 3 kt1012.2+RA BR
06:19 UTC6969 4 kt1011.9+TSRA BR
06:20 UTC280° 3 kt1012.2+RA BR
06:23 UTC69690° 0 kt1011.9VCTS +RA BR
06:25 UTC230° 4 kt1012.2+RA BR
06:29 UTC6969190° 5 kt1011.9VCTS -RA BR
06:30 UTC200° 3 kt1011.9-RA BR
06:33 UTC6969 3 kt1012.2VCTS -RA
06:35 UTC230° 4 kt1012.2-RA
06:40 UTC0° 0 kt1012.2-RA
06:45 UTC69690° 0 kt1012.2-RA
06:50 UTC0° 0 kt1011.9+RA BR
06:53 UTC6969180° 4 kt1011.9-RA BR
06:55 UTC0° 0 kt1012.2-RA BR
07:00 UTC0° 0 kt-RA
07:05 UTC0° 0 kt
07:10 UTC0° 0 kt1011.9
07:15 UTC0° 0 kt-RA
07:20 UTC0° 0 kt-RA
07:25 UTC0° 0 kt1012.2-RA
07:30 UTC0° 0 kt1011.9-RA
07:35 UTC0° 0 kt1012.2RA BR
07:39 UTC69690° 0 kt1012.2+RA BR
07:40 UTC0° 0 kt1012.2+RA BR
07:45 UTC130° 4 kt+RA BR
07:46 UTC6969130° 6 kt1011.5+TSRA BR
07:50 UTC0° 0 kt1011.5+RA BR
07:53 UTC69690° 0 kt1011.5+TSRA BR
07:55 UTC0° 0 kt1011.9+RA BR
08:00 UTC350° 4 kt1011.5+RA BR
08:01 UTC6969 3 kt1011.2VCTS +RA BR
08:05 UTC 1011.2+RA FG
08:10 UTC300° 3 kt1011.2+RA FG
08:13 UTC6969 5 kt1011.9+TSRA FG
08:15 UTC290° 3 kt1011.5+RA BR
08:20 UTC300° 4 kt1011.9+RA BR
08:23 UTC6969 4 kt1011.9TSRA BR
08:25 UTC270° 3 kt1012.2RA BR
08:29 UTC6868 5 kt1012.2VCTS RA BR
08:30 UTC300° 4 kt1012.2+RA BR
08:32 UTC6767 3 kt1012.2+TSRA BR
08:35 UTC310° 3 kt1011.5+RA FG
08:40 UTC300° 4 kt1011.9+RA BR
08:44 UTC6666 4 kt1011.9TSRA BR
08:45 UTC310° 3 kt1012.2-RA BR
08:47 UTC66.266.2 4 kt1012.2-RA BR
08:50 UTC300° 3 kt1011.9RA BR
08:53 UTC6666 3 kt1012.2RA BR
08:55 UTC300° 4 kt1012.2-RA BR
09:00 UTC280° 3 kt1012.2-RA BR
09:05 UTC310° 5 kt1012.2-RA
09:06 UTC6666 4 kt1012.2-RA
09:10 UTC310° 4 kt1011.9-RA
09:12 UTC6565 5 kt1011.9-RA
09:15 UTC310° 3 kt1011.9-RA
09:20 UTC310° 3 kt1011.9-RA
09:23 UTC6464 3 kt1012.2-RA
09:25 UTC300° 3 kt1012.2-RA
09:30 UTC300° 4 kt1012.2-RA

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

The radar

The Moody AFB radar (KVAX), 54 km away, was scanning. The volume nearest the touchdown began at 07:32 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
07:32 UTCTORNADO3 Ne HamburgMadison, FLAN EF-1 TORNADO WITH 100 MPH WINDS TOUCHED DOWN IN NORTHERN MADISON COUNTY. TWO MOBILE HOMES WERE IMPACTED AND A SMALL OUTBUILDING WAS SWEPT OFF ITS FOUNDATION. IN ADDITION TREES WERE DOWNED. THE PATH LENGTH WAS 2.16 MIL

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.