EF1 tornado, Clarksboro, New Jersey, August 10, 2023

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.

Rating

EF1

Date

August 10, 2023

Touchdown

2:08 PM EDT (18:08 UTC)

Lifted

2:10 PM EDT (18:10 UTC)

On the ground

2 minutes

Path length

0.7 miles (1.1 km)

Path width

70 yards (64 m)

Deaths

0

Injuries

0

County

Gloucester County

Touchdown point

39.778, -75.270

Lift-off point

39.781, -75.258

Record number

2308101208-01

10 damage points were recorded along this path by NWS PHI, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 104 mph.

• Roof of a camper blown off. Debris from camper was found along the path
• Convergent pattern seen in crop field
• unidirectional damage noted in a wetland area, possible downdraft in close proximity to the tornado
• Fence surrounding a backyard pool blown off and shingles blown off the roof of a residence.

Survey points are preliminary and are the raw material the published rating was built from. Source: NWS Damage Assessment Toolkit.

A weak surface front moved through NJ, sparking off a few showers and thunderstorms. Thunderstorms produced damaging wind gusts and two tornadoes in parts of New Jersey.

The first damage was noted at residences along Tomlin Station Road, where the top half of a camper was blown off. From there, the tornado snapped a tree on the edge of a crop field. A path of convergent crop damage was noted in the field continuing across a small lake into the next field. At the other end of the field, tree damage was noted in between Nicole Road and Hazel Court. Siding was blown off one residence on Hazel court. Also in this neighborhood there was roof damage to a backyard shed. ||The NWS would like to thank East Greenwich Township OEM and Gloucester County Emergency Management for their assistance with this storm survey.

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

No tornado warning for this county appears in the archive as in force at the moment the tornado touched down.

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 Storm Prediction Center had this point in a Marginal Risk, with a 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 16:39 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 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.

The Philadelphia radar (KDIX), 75 km away, was scanning. The volume nearest the touchdown began at 18:07 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.

Local storm reports within 60 km of the path, in the three hours either side.

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

The live radar over the trackEvery 2023 tornado in New JerseyEvery tornado in New Jersey since 1950Warnings in force in New Jersey nowThe forecast where you are

5 more were confirmed in the United States that day.

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.

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.