Tornadoes · United States · Georgia · 2010

EF1 tornado, Rehobeth, Georgia, April 8, 2010

This EF1 tornado ran 1.8 miles across Morgan County on April 8, 2010, touching down at 4:50 PM EDT and reaching 50 yards wide. It killed nobody, and did $218,000 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
April 8, 2010
Touchdown
4:50 PM EDT (20:50 UTC)
Lifted
4:51 PM EDT (20:51 UTC)
On the ground
1 minutes
Path length
1.8 miles (2.8 km)
Path width
50 yards (46 m)
Deaths
0
Injuries
0
Property damage
$218,000
County
Morgan County
Touchdown point
33.771, -83.503
Lift-off point
33.784, -83.474
Record number
1004081450-01

The damage survey

5 damage points were recorded along this path by NWS FFC, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 93 mph.

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 strong cold front and increasingly negatively tilted upper trough was sweeping through the southeastern U.S. Strong shear accompanied this upper-level system, but instability was marginal at best. Several narrow lines of showers and thunderstorms accompanied the upper-level trough as it moved through Georgia during the day. The strongest line of thunderstorms developed in the mid-afternoon across west central Georgia and moved quickly into east central Georgia by late afternoon. A small cell along this line of thunderstorms in northern Morgan county of east central Georgia produced a brief EF1 tornado. This was the only event reported with this weather system.

A damage survey conducted by the National Weather Service Forecast Office in Peachtree City, Georgia confirmed that a brief EF1 tornado had touched down in northeast Morgan county, approximately two miles north-northeast of Bostwick. The tornado first touched down on High Shoals Road, just south of the intersection with Rehoboth Road, then continued on an east-northeastward path across Rehoboth Road, Price Mill Road, and River Walk Road before lifting near the Appalachee River. At the tornado touchdown point on High Shoals Road, the roof was blown off a chicken house. As the tornado crossed Rehoboth Road, the roof of a home sustained significant damage and an adjacent barn was destroyed. As the tornado continued across Price Mill Road, one home sustained major damage and was left uninhabitable. Many trees were also either blown down or uprooted in the area. As the tornado reached its final point along River Walk Road, a high voltage power line was destroyed and two additional homes sustained minor damage. In total, five homes, one chicken house, and five out buildings were damaged.

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.

The county was under a tornado watch, issued at 20:31 UTC and running to 22:37 UTC.

Issued (UTC)ExpiredProductOffice
20:31 UTC22:37 UTCTornado WatchFFC

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 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 19:54 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.

Peachtre/Fal Fld, GA (KFFC), 12:00Z

8.8 hours before the tornado, 104 km from the path. April 8, 2010.

Skew-T log-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 12:00Z on 2010-04-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 7 joules per kilogram, CIN -320, lifted condensation level 784 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, Peachtre/Fal Fld, GA at 12:00Z on 2010-04-08The 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 155 square meters per square second, 0 to 6 km bulk shear 48 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
7 J/kg
Mixed-layer CIN
-320 J/kg
Surface CAPE
16 J/kg
Mixed-layer LCL
784 m above ground
0-6 km bulk shear
48 kt
0-1 km bulk shear
32 kt
0-1 km storm-relative helicity
155 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.5 K/km

Open this sounding in Storm Lab

Peachtre/Fal Fld, GA (KFFC), 00:00Z

3.2 hours after it, 104 km from the path. April 9, 2010.

Skew-T log-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 00:00Z on 2010-04-09Temperature 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 -70047, lifted condensation level 1307 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, Peachtre/Fal Fld, GA at 00:00Z on 2010-04-09The 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 -119 square meters per square second, 0 to 6 km bulk shear 74 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
0 J/kg
Mixed-layer CIN
-70047 J/kg
Surface CAPE
79 J/kg
Mixed-layer LCL
1307 m above ground
0-6 km bulk shear
74 kt
0-1 km bulk shear
13 kt
0-1 km storm-relative helicity
-119 m²/s²
0-3 km storm-relative helicity
106 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
6.1 K/km

Open this sounding in Storm Lab

The surface observations

Athens Municipal (AHN), 24 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
18:51 UTC6765170° 6 kt1007.1-RA BR
19:07 UTC66.264.4190° 7 kt1007.1-RA BR
19:32 UTC66.264.4180° 10 kt141006.4BR
19:49 UTC66.262.6190° 11 kt181005.8
19:51 UTC6763190° 11 kt181005.8-RA
20:03 UTC64.462.6190° 9 kt191005.8RA BR
20:07 UTC64.462.6190° 10 kt171005.8RA BR
20:17 UTC64.462.6210° 7 kt171006.1+RA BR
20:24 UTC64.462.6180° 9 kt161005.4RA BR
20:35 UTC64.462.6180° 13 kt221004.7+RA BR
20:43 UTC64.462.6190° 10 kt201005.1RA BR
20:51 UTC6463180° 10 kt191004.4RA BR
20:54 UTC64.462.6180° 7 kt191004.4RA BR
21:07 UTC64.462.6280° 9 kt141005.4RA BR
21:09 UTC64.462.6290° 13 kt181005.8RA BR
21:21 UTC64.462.6300° 12 kt191006.1-RA BR
21:28 UTC62.660.8310° 9 kt191005.8-RA
21:41 UTC62.660.8290° 11 kt1006.4
21:45 UTC62.660.8290° 9 kt171006.1
21:51 UTC62.660.8290° 10 kt1006.4
22:00 UTC62.660.8300° 11 kt171006.1

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

The radar

The Atlanta radar (KFFC), 110 km away, was scanning. The volume nearest the touchdown began at 20:50 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
20:45 UTCTSTM WND DMG3 Ne BostwickMorgan, GAPOSSIBLE TORNADO...NWS STORM SURVEY TEAM ENROUTE. HEAVY DAMAGE TO TWO HOMES. ONE IS NOT INHABITABLE. THREE OUT BUILDINGS INCLUDING A LARGE BARN DESTROYED. NUMEROUS TREES AND POWER LINES DOWN. MOST OF THE DAMAGE IS IN THE
20:45 UTCTSTM WND DMGBostwickMorgan, GANUMEROUS TREES AND POWERLINES DOWN...ONE HIGH VOLTAGE ELECTRICAL TOWER DOWN...4 OR 5 HOMES SUSTAINED DAMAGE TO ROOFS.
20:50 UTCTSTM WND DMG1 N ApalacheeMorgan, GAFEW TREES AND POWER LINES DOWN. 1 HOME DAMAGED.
20:50 UTCTORNADO2 Nne BostwickMorgan, GAEF1...80 TO 90 MPH...50 YDS WIDE...2 MILES LONG. TORNADO TOUCHED DOWN AT HIGH SHOALS ROAD AND DAMAGED TREES AND ROOF OF A CHICKEN HOUSE. TORNADO TRAVELED TO REHOBOTH ROAD...CAUSING ROOF DAMAGE TO A HOME AND DESTROYED A B

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

This ground now

The live radar over the trackEvery 2010 tornado in GeorgiaEvery tornado in Georgia since 1950Warnings in force in Georgia nowThe forecast where you are

The other tornadoes of April 8, 2010

7 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
April 84:42 AM CDTEF0Blount, AL0.250$15,000
April 87:15 AM CDTEF0Washington, AL0.1100
April 812:10 PM CDTEF0Coffee, AL3.075
April 82:38 PM EDTEF0Gadsden, FL1.075
April 85:01 PM EDTEF0Oconee, SC0.730$5,000
April 85:26 PM EDTEF1Anderson, SC2.075$100,000
April 811:11 PM EDTEF0Beaufort, SC0.120$40,000

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.