Tornadoes · United States · New Jersey · 2021

EF1 tornado, Woodbine Jct, New Jersey, July 9, 2021

This EF1 tornado ran 0.9 miles across Cape May County on July 9, 2021, touching down at 2:40 AM EDT and reaching 75 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
July 9, 2021
Touchdown
2:40 AM EDT (06:40 UTC)
Lifted
2:42 AM EDT (06:42 UTC)
On the ground
2 minutes
Path length
0.9 miles (1.5 km)
Path width
75 yards (69 m)
Deaths
0
Injuries
0
County
Cape May County
Touchdown point
39.236, -74.793
Lift-off point
39.237, -74.810
Record number
2107090040-01

What the Weather Service recorded

Tropical Storm Elsa affected much of the coastal mid-Atlantic on the night of July 8 and into the morning of the 9th. The storm maintained much of its intensity despite a long track over land as it began to interact with a mid-latitude trough. Overall, impacts across the mid-Atlantic were fairly minimal. One to three inches of rain, locally a little higher, fell across a large area, but produced little in the way of flooding impacts. With the center tracking near the coast, tropical storm force wind conditions were limited, and confined mainly to immediate coastal areas. Elsa did produce a couple of short-lived tornadoes over eastern New Jersey. The storm was fast moving, and departed into New England a few hours after daybreak on the 9th.

An EF-1 tornado touched down near the entrance of the Ocean World |Condominium complex in Woodbine where it uprooted two cedar trees. |The tornado completely destroyed a picnic shelter at the complex's |park area and spread debris consisting of structural remains and |patio furniture hundreds of feet. The roof of the picnic shelter was |dropped into the nearby swimming pool. The tornado caused considerable |structural damage to the complex's office and recreation building. |The front door was blown out and ripped off of the structure and an |exterior wall was pushed outward several inches, but did not |completely collapse. The complex's entrance sign was also blown over |and another nearby cedar tree was uprooted. The tornado continued |westward where it snapped a few trees along Ash Drive and |Freidriechstadt Avenue. The tornado continued through a wooded area |then uprooted a few trees near the intersection of Dehirsch Avenue |and Joffe Drive. At the same intersection, several tree limbs were |snapped off and sections of residential vinyl fencing was blown |over. The tornado continued across an open area then ended near the |intersection of Heilprin Avenue and Ocean Drive where it snapped |part of a pine tree off onto a house.

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

Issued (UTC)ExpiredProductOffice
21:00 UTC10:22 UTCFlash Flood WatchPHI
02:25 UTC09:16 UTCFlood AdvisoryPHI
06:50 UTC07:15 UTCTornado WarningPHI
23:43 UTC00:45 UTCSevere Thunderstorm WarningPHI

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 Marginal 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.

Wallops Is Stn, VA (KWAL), 00:00Z

6.7 hours before the tornado, 154 km from the path. July 9, 2021.

Skew-T log-pSkew-T log-p diagram, Wallops Is Stn, VA at 00:00Z on 2021-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 440 joules per kilogram, CIN -10, lifted condensation level 675 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, Wallops Is Stn, VA at 00:00Z on 2021-07-09The 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 151 square meters per square second, 0 to 6 km bulk shear 42 knots.19395878Sfc1 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
440 J/kg
Mixed-layer CIN
-10 J/kg
Surface CAPE
1088 J/kg
Mixed-layer LCL
675 m above ground
0-6 km bulk shear
42 kt
0-1 km bulk shear
32 kt
0-1 km storm-relative helicity
151 m²/s²
0-3 km storm-relative helicity
336 m²/s²
Significant tornado parameter
0.3
Supercell composite
3.3
0-3 km lapse rate
5.7 K/km

Open this sounding in Storm Lab

Wallops Is Stn, VA (KWAL), 12:00Z

5.3 hours after it, 154 km from the path. July 9, 2021.

Skew-T log-pSkew-T log-p diagram, Wallops Is Stn, VA at 12:00Z on 2021-07-09Temperature 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 -77172, lifted condensation level 712 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, Wallops Is Stn, VA at 12:00Z on 2021-07-09The 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 57 square meters per square second, 0 to 6 km bulk shear 12 knots.193958Sfc1 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
-77172 J/kg
Surface CAPE
4 J/kg
Mixed-layer LCL
712 m above ground
0-6 km bulk shear
12 kt
0-1 km bulk shear
16 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
57 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.4 K/km

Open this sounding in Storm Lab

The radar

The Dover AFB radar (KDOX), 72 km away, was scanning. The volume nearest the touchdown began at 06:37 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
06:40 UTCTORNADO1 Ese WoodbineCape May, NJAN EF-1 TORNADO TOUCHED DOWN NEAR THE ENTRANCE OF THE OCEAN WORLD CONDOMINIUM COMPLEX IN WOODBINE WHERE IT UPROOTED TWO CEDAR TREES. THE TORNADO COMPLETELY DESTROYED A PICNIC SHELTER AT THE COMPLEXS PARK AREA AND SPREAD
06:43 UTCTROPICAL STORM1 E WoodbineCape May, NJA TREE WAS SNAPPED ALONG FREDERICKSTADT AVENUE. TIME ESTIMATED FROM RADAR.
06:45 UTCTROPICAL STORM2 Wsw TuckahoeCape May, NJA FEW TREES WERE UPROOTED ALONG WOODBINE ROAD. TIME ESTIMATED FROM RADAR.
07:00 UTCFLOOD3 Sw Atlantic CityAtlantic, NJROADWAY FLOODING AROUND SOUTH RALEIGH AVENUE AND THE BOARDWALK.
07:15 UTCFLOODSomers PointAtlantic, NJROADWAY FLOODING.
07:33 UTCTORNADOLittle Egg Harbor TwpOcean, NJAN EF-0 TORNADO TOUCHED DOWN IN A RESIDENTIAL AREA ALONG SYCAMORE DRIVE IN LITTLE EGG HARBOR TOWNSHIP. THE TORNADO SNAPPED NUMEROUS LARGE TREE LIMBS AND SNAPPED A FEW TREES ALONG SYCAMORE DRIVE AND HARBOURTOWN BOULEVARD.

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

This ground now

The live radar over the trackEvery 2021 tornado in New JerseyEvery tornado in New Jersey since 1950Warnings in force in New Jersey nowThe forecast where you are

The other tornadoes of July 9, 2021

1 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
July 93:33 AM EDTEF0Ocean, NJ0.3110

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.