Tornadoes · United States · Alabama · 2019

EF0 tornado, Vick to Brierfield, Alabama, December 16, 2019

From Vick to Brierfield, this EF0 tornado ran 3.1 miles across Bibb County on December 16, 2019, touching down at 9:49 PM CST and reaching 200 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
December 16, 2019
Touchdown
9:49 PM CST (03:49 UTC)
Lifted
9:55 PM CST (03:55 UTC)
On the ground
6 minutes
Path length
3.1 miles (5.0 km)
Path width
200 yards (183 m)
Deaths
0
Injuries
0
County
Bibb County
Touchdown point
32.980, -87.051
Lift-off point
32.986, -86.998
Record number
1912162149-01

The damage survey

23 damage points were recorded along this path by NWS BMX, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 90 mph.

  • Estimated start point based on TDS.

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 very warm and moist air mass developed over Central Alabama on Monday, December 16th. Afternoon temperatures warmed into the lower and middle 70s, which was 15 to 20 degrees above normal for the middle of December. A surface low tracked north of Alabama Monday night and pushed a strong cold across the state. Several bands of strong to severe storms developed across Mississippi during the afternoon and moved into west Alabama that evening. Most of the severe weather damage across Central Alabama was associated with a long track supercell that started in Mississippi and tracked into southwest Alabama. The supercell entered southern Sumter County and tracked northeast to Shelby County.

National Weather Service meteorologists surveyed damage in east central Bibb County and determined that it was consistent with an EF0 tornado, with maximum sustained winds near 70 mph.||The tornado began northeast of the city of Centreville in an inaccessible area east of Gary Springs Loop Road, where a well-defined tornado debris signature was observed by the KBMX radar. The tornado tracked eastward and crossed County Road 57 and Pine Tree Road before dissipating near Tucker Road. A few trees were uprooted along the path.

National Weather Service meteorologists surveyed damage in east Bibb County and determined that it was consistent with an EF1 tornado, with maximum sustained winds near 90 mph.||The tornado began on the eastern edge of Brierfield Ironworks Park where several trees were uprooted. The tornado continued eastward and crossed State Route 139. At this location, dozens of trees were snapped and uprooted in the immediate vicinity of Mahan Creek. The tornado tracked eastward and damaged a barn on the Bridlewood Farms property before dissipating just west of County Road 1053.

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

The warnings

47 minutes of warning. NWS BMX issued a tornado warning for this county at 03:02 UTC, 47 minutes before the tornado touched down, in force until 04:00 UTC.

The county was under a tornado watch, issued at 03:48 UTC and running to 05:09 UTC.

Issued (UTC)ExpiredProductOffice
21:47 UTC03:48 UTCTornado WatchBMX
03:02 UTC04:00 UTCTornado WarningBMX
03:38 UTC04:00 UTCSevere Thunderstorm WarningBMX
03:48 UTC05:09 UTCTornado WatchBMX
03:59 UTC04:11 UTCTornado WarningBMX

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 00:37 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.

Birmingham, AL (KBMX), 00:00Z

3.8 hours before the tornado, 32 km from the path. December 17, 2019.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2019-12-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 211 joules per kilogram, CIN -85, lifted condensation level 686 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, Birmingham, AL at 00:00Z on 2019-12-17The 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 286 square meters per square second, 0 to 6 km bulk shear 58 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
211 J/kg
Mixed-layer CIN
-85 J/kg
Surface CAPE
257 J/kg
Mixed-layer LCL
686 m above ground
0-6 km bulk shear
58 kt
0-1 km bulk shear
33 kt
0-1 km storm-relative helicity
286 m²/s²
0-3 km storm-relative helicity
288 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.7
0-3 km lapse rate
5.1 K/km

Open this sounding in Storm Lab

Birmingham, AL (KBMX), 12:00Z

8.2 hours after it, 32 km from the path. December 17, 2019.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2019-12-17Temperature 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 -97528, lifted condensation level 565 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, Birmingham, AL at 12:00Z on 2019-12-17The 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 258 square meters per square second, 0 to 6 km bulk shear 67 knots.1939587897117Sfc1 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
-97528 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
565 m above ground
0-6 km bulk shear
67 kt
0-1 km bulk shear
33 kt
0-1 km storm-relative helicity
258 m²/s²
0-3 km storm-relative helicity
292 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0
0-3 km lapse rate
2.1 K/km

Open this sounding in Storm Lab

The radar

The Birmingham radar (KBMX), 32 km away, was scanning. The volume nearest the touchdown began at 03:50 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
03:03 UTCTORNADO5 Wnw Morgan SpringsHale, ALA TORNADO TOUCHED DOWN 5 MILES WNW OF MORGAN SPRINGS IN HALE COUNTY AND TRACKED NORTHEAST INTO PERRY COUNTY, KNOCKING DOWN AT LEAST 100 TREES ALONG ITS 5.38 MILE PATH. MAX WINDS WERE 80 MPH. WIDTH AT ITS WIDEST POINT WAS
03:20 UTCTSTM WND DMG1 Ne HeibergerPerry, ALA FEW TREES DOWN ALONG COUNTY RD 47, 49, AND HIGHWAY 5 FROM HEIBERGER NORTH TO THE BIBB COUNTY LINE. POWER OUTAGES REPORTED IN THIS AREA AS WELL.
03:48 UTCTSTM WND DMG3 Ne Gary SpringsBibb, ALUNKNOWN DAMAGE REPORTED BY SO NEAR 6400 BLOCK OF MONTEVALLO RD. POSSIBLE TORNADO.
03:49 UTCTORNADO2 Ene Gary SpringsBibb, ALA TORNADO TOUCHED DOWN NORTHEAST OF CENTREVILLE AND TRACKED EASTWARD FOR 3.12 MILES, KNOCKING DOWN NUMEROUS TREES. MAX WIND SPEEDS WERE 70 MPH AND THE WIDTH AT THE WIDEST POINT WAS 200 YDS.
03:54 UTCTSTM WND DMGMaplesvilleChilton, ALTREES DOWN IN AND AROUND MAPLESVILLE.
04:00 UTCTORNADO2 W Brierfield IronworkBibb, ALA TORNADO TOUCHED DOWN ON THE EAST SIDE OF BRIERFIELD IRONWORKS PARK AND TRACKED EASTWARD, CROSSING AL 139, KNOCKING DOWN DOZENS OF TREES WITH WINDS OF 90 MPH. A BARN WAS DAMAGED AT BRIDLEWOOD FARMS, BEFORE THE TORNADO L
04:03 UTCTSTM WND DMGJemisonChilton, ALTREES DOWN IN AND AROUND JEMISON.
04:04 UTCTSTM WND DMGBrierfield Ironworks PaBibb, ALDAMAGE TO A BUILDING ALONG HWY 139. TREES DOWN AND DAMAGE TO HOMES ALONG COUNTY ROAD 106 AND IN BRIERFIELD ESTATES. POSSIBLE TORNADO.
04:07 UTCTSTM WND DMG2 Se MontevalloShelby, ALMINOR STRUCTURAL DAMAGE TO HOMES AND BARN ON CLAY PIT RD. POSSIBLE TORNADO.
04:07 UTCTORNADO2 Se MontevalloShelby, ALA TORNADO TOUCHED DOWN SE OF MONTEVALLO AND MOVED NORTHEAST ACROSS HWY 25 BEFORE LIFTING EAST OF COUNTY ROAD 23. ALONG THE 2.29 MILE PATH, SEVERAL HOMES WERE DAMAGED AND AN OUTBUILDING DESTROYED. DOZENS OF TREES WERE ALS
04:11 UTCTORNADO2 Ese MontevalloShelby, ALSHERIFF DEPUTY CONFIRMS TORNADO IS ON THE GROUND AND KNOCKING DOWN POWER POLES, ALONG HWY 25.
04:25 UTCTSTM WND DMG1 Ese Marble ValleyCoosa, ALPOWER LINE DOWN NEAR COUNTY RD 56.

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

This ground now

The live radar over the trackEvery 2019 tornado in AlabamaEvery tornado in Alabama since 1950Warnings in force in Alabama nowThe forecast where you are

The other tornadoes of December 16, 2019

37 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
December 1610:10 AM CSTEF1Bossier Parish, LA26.2250$520,000
December 1610:29 AM CSTEF2Rapides Parish, LA3.6147$200,000
December 1611:08 AM CSTEF1Claiborne, LA to MS11.7600$84,000
December 1611:10 AM CSTEF3Beauregard Parish, LA62.65501$25 million
December 1611:48 AM CSTEF1Warren, MS22.3616$502,000
December 162:34 PM CSTEF2Franklin, MS4.2720$125,000
December 162:34 PM CSTEF3Amite, MS30.38803$500,000
December 163:18 PM CSTEF0Amite, MS5.050
December 163:39 PM CSTEF1Amite, MS1.675
December 163:41 PM CSTEF1Union, MS9.33001$250,000
December 163:42 PM CSTEF1Tangipahoa Parish, LA4.975
December 163:45 PM CSTEF0Calhoun, MS2.660$10,000
December 163:53 PM CSTEF2Lee, MS9.4250$750,000
December 163:55 PM CSTEF0Lee, MS2.280$10,000
December 164:04 PM CSTEF0Lincoln, MS0.450$40,000
December 164:14 PM CSTEF0Prentiss, MS0.375$50,000
December 164:27 PM CSTEF1Tishomingo, MS3.5150$350,000
December 164:41 PM CSTEF2Marion, MS7.4350$300,000
December 164:44 PM CSTEF2Lawrence, MS10.76001$585,000
December 164:50 PM CSTEF1Colbert, AL0.775
December 164:52 PM CSTEF2Colbert, AL8.2250
December 164:55 PM CSTEF0Lawrence, TN3.825$15,000
December 164:56 PM CSTEF1Marion, MS6.2440$50,000
December 165:08 PM CSTEF2Lawrence, AL18.53702
December 165:17 PM CSTEF3Lamar, MS5.8560$510,000
December 165:19 PM CSTEF3Simpson, MS18.61,320$705,000
December 165:20 PM CSTEF1Lauderdale, AL2.9500
December 165:30 PM CSTEF1Limestone, AL9.550
December 165:41 PM CSTEF0Marshall, TN3.550$15,000
December 165:50 PM CSTEF0Lincoln, TN3.250
December 165:54 PM CSTEF1Madison, AL1.325
December 165:59 PM CSTEF3Jones, MS to AL61.23502$1.2 million
December 166:05 PM CSTEF0Madison, AL3.237
December 168:07 PM CSTEF2Marengo, AL6.03503
December 169:03 PM CSTEF0Hale, AL5.3300
December 1610:00 PM CSTEF1Bibb, AL2.6300
December 1610:07 PM CSTEF0Shelby, AL2.3200

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.