Tornadoes · United States · Mississippi · 2020

EF0 tornado, (Uox)Oxford Arpt to College Hill Station, Mississippi, August 28, 2020

From (Uox)Oxford Arpt to College Hill Station, this EF0 tornado ran 1.1 miles across Lafayette County on August 28, 2020, touching down at 6:33 AM CDT and reaching 50 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
August 28, 2020
Touchdown
6:33 AM CDT (11:33 UTC)
Lifted
6:34 AM CDT (11:34 UTC)
On the ground
1 minutes
Path length
1.1 miles (1.8 km)
Path width
50 yards (46 m)
Deaths
0
Injuries
0
Crop damage
$1,000
County
Lafayette County
Touchdown point
34.390, -89.520
Lift-off point
34.400, -89.505
Record number
2008280533-01

What the Weather Service recorded

Powerful Hurricane Laura struck the Gulf Coast on August 26, 2020. The remnants of Laura moved through the Mid-South on August 27th and August 28th. The first band of showers and thunderstorms tracked across eastern Arkansas during the evening hours of August 27th causing wind damage and a half dozen weak tornadoes. An additional band of showers and thunderstorms developed across north Mississippi during the morning hours of August 28th as the system was departing. A weak morning tornado was reported near Oxford followed by a couple of incidents of wind damage over northeast Mississippi during the afternoon and isolated flash flooding later that evening.

A tornado touched down in northern portions of Oxford, northeast of the Oxford Airport. The brief tornado damaged trees west of Old Highway 7, but no structural damage was reported.

From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.

The warnings

12 minutes of warning. NWS MEG issued a tornado warning for this county at 11:21 UTC, 12 minutes before the tornado touched down, in force until 11:45 UTC.

Issued (UTC)ExpiredProductOffice
00:00 UTC20:13 UTCFlash Flood WatchMEG
00:39 UTC02:36 UTCTornado WatchMEG
00:58 UTC01:30 UTCTornado WarningMEG
11:18 UTC11:45 UTCSevere Thunderstorm WarningMEG
11:21 UTC11:45 UTCTornado WarningMEG
11:37 UTC11:52 UTCTornado WarningMEG
04:16 UTC06:00 UTCFlood AdvisoryMEG

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 05:37 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.

Little Rock, AR (KLZK), 00:00Z

11.6 hours before the tornado, 63 km from the path. August 28, 2020.

Skew-T log-pSkew-T log-p diagram, Little Rock, AR at 00:00Z on 2020-08-28Temperature 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 -68566, lifted condensation level 582 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, Little Rock, AR at 00:00Z on 2020-08-28The 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 -48 square meters per square second, 0 to 6 km bulk shear 6 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
0 J/kg
Mixed-layer CIN
-68566 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
582 m above ground
0-6 km bulk shear
6 kt
0-1 km bulk shear
29 kt
0-1 km storm-relative helicity
-48 m²/s²
0-3 km storm-relative helicity
78 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.1 K/km

Open this sounding in Storm Lab

Little Rock, AR (KLZK), 12:00Z

0.4 hours after it, 63 km from the path. August 28, 2020.

Skew-T log-pSkew-T log-p diagram, Little Rock, AR at 12:00Z on 2020-08-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 177 joules per kilogram, CIN -11, lifted condensation level 650 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, Little Rock, AR at 12:00Z on 2020-08-28The 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 297 square meters per square second, 0 to 6 km bulk shear 27 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
177 J/kg
Mixed-layer CIN
-11 J/kg
Surface CAPE
483 J/kg
Mixed-layer LCL
650 m above ground
0-6 km bulk shear
27 kt
0-1 km bulk shear
38 kt
0-1 km storm-relative helicity
297 m²/s²
0-3 km storm-relative helicity
421 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
5.0 K/km

Open this sounding in Storm Lab

The surface observations

Oxford (UOX), 3 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
09:35 UTC75.271.6170° 11 kt181009.8
09:55 UTC75.271.6170° 12 kt211009.8
10:15 UTC75.271.6170° 11 kt161009.8
10:35 UTC75.271.6180° 11 kt221009.8
10:55 UTC75.271.6170° 12 kt191009.8
11:15 UTC75.273.4170° 12 kt201009.8BR
11:35 UTC73.473.4220° 14 kt211009.8BR
11:55 UTC73.473.4190° 9 kt171009.5BR
12:15 UTC73.473.4190° 8 kt211010.2
12:35 UTC73.473.4210° 9 kt151010.5
12:55 UTC75.275.2210° 9 kt201010.8
13:15 UTC75.275.2210° 9 kt171011.2

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

The radar

The Memphis radar (KNQA), 111 km away, was scanning. The volume nearest the touchdown began at 11:33 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
11:30 UTCTORNADO1 Ne OxfordLafayette, MSTORNADO REPORTED BY OXFORD CITY EMA.
11:30 UTCTORNADO2 Ese OxfordLafayette, MSTORNADO REPORTED BY EMA.

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 MississippiEvery tornado in Mississippi since 1950Warnings in force in Mississippi nowThe forecast where you are

The other tornadoes of August 28, 2020

12 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
August 281:26 AM CDTUnratedKingsbury, SD0.425
August 281:27 AM CDTEF1Kingsbury, SD0.625$75,000
August 282:08 AM CDTEF0Deuel, SD0.150
August 282:09 AM CDTEF0Deuel, SD0.220
August 282:09 AM CDTEF0Deuel, SD0.730
August 282:11 AM CDTEF1Deuel, SD0.940
August 284:02 PM CDTEF1Winston, AL8.8325
August 284:36 PM CDTEF1Winston, AL2.6100
August 285:27 PM CDTEF1Cullman, AL5.6115
August 285:28 PM CDTEF0Warren, TN1.565$5,000
August 285:58 PM CDTEF0Morgan, AL0.240
August 287:24 PM CDTEF0Putnam, TN2.450$15,000

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.