Tornadoes · United States · Alabama · 2022

EF1 tornado, Seven Hills, Alabama, March 9, 2022

This EF1 tornado ran 1.8 miles across Mobile County on March 9, 2022, touching down at 12:42 AM CST 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 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
March 9, 2022
Touchdown
12:42 AM CST (06:42 UTC)
Lifted
12:45 AM CST (06:45 UTC)
On the ground
3 minutes
Path length
1.8 miles (2.8 km)
Path width
50 yards (46 m)
Deaths
0
Injuries
0
County
Mobile County
Touchdown point
30.610, -88.337
Lift-off point
30.630, -88.319
Record number
2203090042-01

The damage survey

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

  • Several large hardwood tree branches down. Tornado appears to have touched down just to the southwest on other side of lake.

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 moved into an increasing unstable airmass over the Central Gulf Coast. Thunderstorms develop ahead of the frontal boundary and produced two tornadoes along with some wind damage. These tornadoes occurred during the early morning hours on March 9th.

The tornado touched down on Lakefront Ct where it produced very minor|tree damage, after which the tornado tracked off to the northeast.|The most significant structural damage occurred at a residence near|the intersection of Lakefront Dr and Dogwood Circle. Roof damage|and damage to multiple hardwood/softwood trees was noted. The tornado|then continued off to the northeast where it weakened slightly as it|crossed Scenic View Dr. It then continued northeast and increased in|strength as it approached Busby Rd where multiple softwood trees|were found snapped. The tornado lifted somewhere to the northeast of|Busby Rd before crossing Schmidt Ln and/or Johnson Rd where no damage|was found.||The team surveyed reports of damage on Repoll Rd, but only sporadic|minor wind damage was noted.

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

The warnings

1 minute of warning. NWS MOB issued a tornado warning for this county at 06:41 UTC, 1 minute before the tornado touched down, in force until 07:08 UTC.

Issued (UTC)ExpiredProductOffice
06:41 UTC07:08 UTCTornado WarningMOB
07:25 UTC08:31 UTCTornado WatchMOB

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 05:55 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.

Slidell Radar S, LA (KSIL), 00:00Z

6.7 hours before the tornado, 138 km from the path. March 9, 2022.

Skew-T log-pSkew-T log-p diagram, Slidell Radar S, LA at 00:00Z on 2022-03-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 23 joules per kilogram, CIN -360, lifted condensation level 510 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, Slidell Radar S, LA at 00:00Z on 2022-03-09The 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 283 square meters per square second, 0 to 6 km bulk shear 53 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
23 J/kg
Mixed-layer CIN
-360 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
510 m above ground
0-6 km bulk shear
53 kt
0-1 km bulk shear
36 kt
0-1 km storm-relative helicity
283 m²/s²
0-3 km storm-relative helicity
311 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.9
0-3 km lapse rate
3.5 K/km

Open this sounding in Storm Lab

Slidell Radar S, LA (KSIL), 12:00Z

5.3 hours after it, 138 km from the path. March 9, 2022.

Skew-T log-pSkew-T log-p diagram, Slidell Radar S, LA at 12:00Z on 2022-03-09Temperature 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 -81676, lifted condensation level 698 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, Slidell Radar S, LA at 12:00Z on 2022-03-09The 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 -111 square meters per square second, 0 to 6 km bulk shear 57 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
-81676 J/kg
Surface CAPE
2 J/kg
Mixed-layer LCL
698 m above ground
0-6 km bulk shear
57 kt
0-1 km bulk shear
20 kt
0-1 km storm-relative helicity
-111 m²/s²
0-3 km storm-relative helicity
-4 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
1.5 K/km

Open this sounding in Storm Lab

The radar

The Mobile radar (KMOB), 11 km away, was scanning. The volume nearest the touchdown began at 06:41 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
06:42 UTCTORNADO3 N DeesMobile, ALNWS STORM SURVEY TEAM FOUND MINOR TREE DAMAGE ON LAKEFRONT CT AFTER WHICH THE TORNADO TRACKED OFF TO THE NE. ROOF DAMAGE AND MULTIPLE DAMAGE TO HARDWOOD/SOFTWOOD TREES CONSISTENT WITH EF1 WAS NOTED NEAR A RESIDENCE AT TH
06:42 UTCTORNADO3 W Hutchens ElementarMobile, ALBROADCAST MEDIA RELAYED NUMEROUS REPORTS OF TREE DAMAGE AND POWER OUTAGES ON LAKEFRONT DRIVE NEAR DOGWOOD CIRCLE. TIME ESTIMATED ON RADAR.
06:46 UTCTORNADO1 Ese Seven HillsMobile, ALPUBLIC REPORT OF NUMEROUS SNAPPED TREES ON REPOLL ROAD. CALLER ALSO REPORTED ROOF DAMAGE TO A NEARBY HOME. TIME ESTIMATED FROM RADAR.

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

This ground now

The live radar over the trackEvery 2022 tornado in AlabamaEvery tornado in Alabama since 1950Warnings in force in Alabama nowThe forecast where you are

The other tornadoes of March 9, 2022

7 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
March 92:11 AM CSTEF1Conecuh, AL0.2150
March 94:50 AM CSTEF1Barbour, AL9.1280
March 95:06 AM CSTEF0Washington, FL1.4200$75,000
March 95:12 AM CSTEF1Washington, FL0.2100$100,000
March 96:48 AM ESTEF0Stewart, GA1.175
March 95:55 AM CSTUnratedJackson, FL0.125
March 96:15 AM CSTEF1Bay, FL0.425$100,000

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.