Tornadoes · United States · Alabama · 2023
EF0 tornado, Wheeler Lake North to Ripley, Alabama, August 10, 2023
From Wheeler Lake North to Ripley, this EF0 tornado ran 7.7 miles across Limestone County on August 10, 2023, touching down at 2:21 AM CDT and reaching 225 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
- August 10, 2023
- Touchdown
- 2:21 AM CDT (07:21 UTC)
- Lifted
- 2:28 AM CDT (07:28 UTC)
- On the ground
- 7 minutes
- Path length
- 7.7 miles (12.3 km)
- Path width
- 225 yards (206 m)
- Deaths
- 0
- Injuries
- 0
- County
- Limestone County
- Touchdown point
- 34.781, -87.242
- Lift-off point
- 34.736, -87.121
- Record number
- 2308100121-01
The damage survey
16 damage points were recorded along this path by NWS HUN, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF0. The highest wind the damage implies is 85 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 line of strong to severe thunderstorms raced east-southeast from the Ozarks through the mid South during the evening hours of the 9th and into the Tennessee Valley during the early morning hours of the 10th. The line produced several reports of wind damage and one EF-0 tornado in Limestone County.
Damage was consistent with a high-end EF-0 tornado with maximum winds of 85 mph. The tornado was on the ground for approximately 7 minutes and had a maximum width of 225 yards. Damage indicators were a mix of softwood and hardwood trees, uprooted or partially snapped along the path. The tornado formed on the northern shore of Wheeler Lake on Little Elk Road, downing softwood trees at this location. The tornado crossed Snake Road to the southeast, downing and uprooting additional softwood trees along Bay Hill and Bay Shore Drives. Several homes at this location sustained significant damage to docks as trees fell on them, with uprooted trees causing damage as well to retaining walls and sprinkler systems in this area. At this point, the tornado crossed the open waters along the north shore of Wheeler Lake before coming ashore again just before Davis Road. Several trees were uprooted along with very large, snapped branches here. One home sustained damage in this area as a tree fell on the back side of the structure. While the tree looked snapped, the health of the tree looked to be in question which likely led to its quick failure. The tornado then crossed an inlet and uprooted several more trees along Beechwood Road, before continuing to the Brigadoon neighborhood. Significant and more widespread tree damage was noted in this neighborhood as trees were uprooted, power poles knocked down, and large branches snapped. The tornado continued to follow the northern shore of Wheeler Lake but began weakening. Damage, much less widespread compared to areas further west, was observed along Beech Fork Lane and sporadic tree damage through Shaw Road. The tornado dissipated just east of Shaw Road.
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.
| Issued (UTC) | Expired | Product | Office |
|---|---|---|---|
| 18:55 UTC | 22:48 UTC | Severe Thunderstorm Watch | HUN |
| 19:53 UTC | 20:30 UTC | Severe Thunderstorm Warning | HUN |
| 20:28 UTC | 21:15 UTC | Severe Thunderstorm Warning | HUN |
| 21:27 UTC | 23:30 UTC | Flood Warning | HUN |
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 General Thunderstorms Risk. The outlook in force was issued at 05:07 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.
Nashville Metro, TN (KBNA), 00:00Z
7.4 hours before the tornado, 161 km from the path. August 10, 2023.
- Mixed-layer CAPE
- 13 J/kg
- Mixed-layer CIN
- -104 J/kg
- Surface CAPE
- 748 J/kg
- Mixed-layer LCL
- 840 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 340 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
- 0-3 km lapse rate
- 5.5 K/km
Nashville Metro, TN (KBNA), 12:00Z
4.6 hours after it, 161 km from the path. August 10, 2023.
- Mixed-layer CAPE
- 38 J/kg
- Mixed-layer CIN
- -65 J/kg
- Surface CAPE
- 80 J/kg
- Mixed-layer LCL
- 567 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 131 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
- 0-3 km lapse rate
- 4.2 K/km
The radar
The Northeast Alabama radar (KHTX), 102 km away, was scanning. The volume nearest the touchdown began at 07:20 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 |
|---|---|---|---|---|
| 07:07 UTC | TSTM WND DMG | 3 Sw Anderson | Lauderdale, AL | Report of large tree limbs snapped NW of Rogersville. |
| 07:50 UTC | TSTM WND DMG | 6 Nw Owens Crossroads | Madison, AL | Tree down on powerlines on Todd Mill Rd. |
| 07:52 UTC | TSTM WND DMG | 1 E Redstone Arsenal | Madison, AL | Public report of several trees uprooted and snapped on the Redstone Arsenal at Vincent Dr and Phoenix Rd. Time estimated by radar. |
| 07:56 UTC | TSTM WND DMG | 6 Se Redstone Arsenal | Madison, AL | Tree down at Indigo at Grissom Apartments near Meadowbrook Drive in south Huntsville. Report and photo from social media. Time estimated from radar. |
| 07:57 UTC | TSTM WND GST 60 | Huntsville Internationa | Madison, AL | ASOS station KHSV Huntsville. |
| 08:00 UTC | TSTM WND DMG | 5 Ese Huntsville | Madison, AL | Several tree limbs down along with some home siding damage. |
From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.
This ground now
The live radar over the trackEvery 2023 tornado in AlabamaEvery tornado in Alabama since 1950Warnings in force in Alabama nowThe forecast where you are
The other tornadoes of August 10, 2023
5 more were confirmed in the United States that day.
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.