EF0 tornado, Jefferson to Blackwood Terrace, New Jersey, June 13, 2019

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.

Rating

EF0

Date

June 13, 2019

Touchdown

12:15 AM EDT (04:15 UTC)

Lifted

12:16 AM EDT (04:16 UTC)

On the ground

1 minutes

Path length

0.3 miles (0.5 km)

Path width

50 yards (46 m)

Deaths

0

Injuries

0

County

Gloucester County

Touchdown point

39.747, -75.245

Lift-off point

39.750, -75.240

Record number

1906132215-01

14 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 100 mph.

• large branches down and lawn furniture blown around, gutters taken off one house
• gutters taken off one house
• fence damage and backyard furniture lifted approximately 50 yards away
• trunks snapped. collateral roof damage to three different residences

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

A complex frontal system was affecting the mid-Atlantic on June 13. That evening, a west to east oriented warm frontal boundary was located roughly along the borders of Pennsylvania with Maryland and Delaware, and into adjacent areas of New Jersey. While the environment north of this boundary was cool and stable, conditions along and south of the front were more favorable for convection. A line of strong to severe thunderstorms tracked along this boundary, producing areas of damaging wind. In addition, along the northern edge of this line which tracked along the boundary itself, a localized area of enhanced shear led to multiple tornado touchdowns.

A tornado formed in the development near Saddle Court in Mullica |Hill. This caused damage to fencing at one residence, and ripped a|gutter off another residence. Backyard furniture was lifted |approximately 50 yards. From there, the tornado moved in a |northeasterly direction and caused a narrow path of tree damage |before lifting southwest of Highway 322.

The same storm which earlier produced a tornado in Mullica Hill, NJ later produced a second, slightly stronger tornado. This tornado took a non-continuous path from Deptford Township in Gloucester County|into the Blackwood section of Gloucester Township in Camden County. There were |several locations of tree damage, including snapped and uprooted |hardwood trees. There was damage to three residences in Deptford |Township when portions of trees fell on these residences. In |Blackwood, an uprooted tree caused damage to an apartment |building.

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. One was issued for the county at another hour that day.

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 General Thunderstorms Risk. The outlook in force was issued at 01:00 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), 74 km away, was scanning. The volume nearest the touchdown began at 04:14 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 2019 tornado in New JerseyEvery tornado in New Jersey since 1950Warnings in force in New Jersey nowThe forecast where you are

3 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.