Every year, South Jersey gets hit. Nor’easters roll through in the fall and winter. Summer thunderstorms bring sudden, violent wind gusts. Tropical systems push up from the south. And every time, trees come down.
Some of those trees were already compromised. Others looked perfectly healthy but had hidden problems no one noticed until 60 mph winds exposed them. The damage is predictable in hindsight, and that is exactly the point. Most storm-related tree failures can be prevented with the right preparation.
This article looks at what actually causes trees to fail during storms, which species are most vulnerable in South Jersey, and what homeowners can do before the next big storm rolls in.
Why Trees Fail During Storms
A storm does not treat all trees equally. When a nor’easter or severe thunderstorm moves through Gloucester County, some trees lose a few small branches. Others split in half or uproot completely. The difference comes down to a handful of factors that determine how a tree handles wind and water.
Root stability. This is the foundation of everything. A tree with a deep, well-spread root system can handle far more wind than a tree with shallow or compromised roots. Saturated soil is one of the biggest risk factors. When the ground is soaked from days of rain (common before a nor’easter hits), roots lose their grip. The soil turns soft, and trees that were stable in dry conditions suddenly become vulnerable to uprooting.
Structural defects. Trees with internal decay, codominant stems (two trunks growing from the same point), included bark, or large cavities are weaker than they appear from the outside. These defects create stress points where the tree is most likely to split or snap. A tree can look full and green while being hollow inside.
Canopy size and density. A tree with a large, dense canopy acts like a sail in high wind. The more leaf surface area the wind can push against, the greater the force on the trunk and roots. This is why trees that still have their leaves during an early fall nor’easter suffer more damage than bare trees in a winter storm.
Species characteristics. Some tree species have naturally brittle wood, shallow root systems, or weak branch attachments. These species are more prone to failure even in moderate storms. Others are built to flex and absorb wind energy.
Previous damage. A tree that lost a major limb in a past storm, or one that was improperly pruned (topped, lion-tailed, or over-thinned), is more likely to fail in the next event. Past damage weakens the structure and creates entry points for decay.
The Species That Cause the Most Problems in South Jersey
South Jersey’s tree population is a mix of native hardwoods, pines, and ornamental plantings. Some of these handle storms well. Others do not.
Silver maple. Silver maples are one of the most common yard trees in South Jersey neighborhoods, and also one of the most storm-prone. Their wood is relatively soft, their branches are long and heavy, and their root systems are shallow. Silver maples frequently lose large limbs during storms, and entire trees can uproot when soils are saturated.
Bradford pear. These ornamental trees were planted by the thousands across suburban New Jersey in the 1980s and 1990s. They grow fast and look nice for a few years, but their branch structure is a disaster. Bradford pears develop tight, V-shaped branch unions that split apart easily. A moderate wind event is often all it takes to rip one in half. Many of these trees are now reaching the end of their useful life span.
White ash. The emerald ash borer has killed ash trees across New Jersey and the entire eastern United States. Dead ash trees are extremely brittle. Their branches snap without warning, and their trunks can break cleanly in moderate winds. A standing dead ash near your house is one of the highest-risk situations you can have on your property.
Pin oak. While oaks are generally considered strong, pin oaks have a tendency to retain dead lower branches. These dead branches become projectiles in a storm. Pin oaks also tend to develop included bark in their branch unions, which weakens the connection.
Eastern white pine. These tall, fast-growing evergreens are common across South Jersey. Their height makes them vulnerable to strong winds, and their shallow root plates mean they can uproot in saturated soil. A 70-foot white pine coming down can reach well beyond your property line.
On the other hand, species like red oak, white oak, American beech, and bald cypress tend to perform well in storms. Their wood is denser, their root systems are deeper, and their branch attachments are stronger.
What Wind Speed Does It Take to Bring Down a Tree?
Research from the Ecole Polytechnique found that most trees, regardless of species, tend to fail once wind speeds reach approximately 90 mph. At that point, the wind force exceeds the structural limits of most tree species.
But that does not mean your trees are safe at 50 or 60 mph. Trees with defects, root problems, or decay can fail at much lower wind speeds. A compromised silver maple might lose a major limb at 40 mph. A dead ash can snap in a 30 mph gust.
The National Weather Service office in Mount Holly, which covers South Jersey, regularly issues wind advisories for gusts of 40 to 60 mph during nor’easters and severe thunderstorms. Wind gusts over 70 mph have been recorded in parts of New Jersey during recent storm events. These are well within the range that brings down weakened trees.
The lesson: it is not just about surviving the worst-case hurricane. It is about surviving the routine storms that hit South Jersey multiple times every year.
Saturated Soil Makes Everything Worse
This is the factor most homeowners overlook. A tree that stands firm in dry conditions can topple in the same wind speed when the soil is waterlogged.
Nor’easters often bring prolonged rain before the strongest winds arrive. By the time the peak gusts hit, the ground has been soaked for hours or even days. The soil around tree roots turns to mud, and the mechanical grip that holds the tree upright weakens dramatically.
South Jersey has areas of clay-heavy soil, especially in parts of Gloucester County and Camden County. Clay soils retain water and drain slowly, which means they stay saturated longer after a rain event. Trees growing in these soils are at higher risk of uprooting during extended storms.
If your property has poor drainage or areas where water pools after rain, the trees in those areas deserve extra attention before storm season.
What Homeowners Can Do Before the Next Storm
The best time to prepare for storm damage is before the storm. Here is what you can do to reduce your risk.
Get your trees inspected. A certified arborist can identify structural defects, root problems, and decay that you cannot see from the ground. The International Society of Arboriculture recommends regular inspections, especially for mature trees near structures. One inspection can reveal problems that would have gone unnoticed until the next big storm.
Prune for wind resistance. Proper tree pruning reduces a tree’s wind load without harming its health. Crown thinning removes select interior branches to allow wind to pass through the canopy rather than pushing against it. This reduces the total force on the trunk and roots during a storm. Thinning or reducing the crown has been shown to reduce tree movement at any wind speed.
Do not confuse this with tree topping, which is the practice of cutting off the top of the tree. Topping is harmful and actually increases the risk of future failure by encouraging weak, rapidly growing sprouts.
Remove dead and dying trees. A dead tree near your house is a ticking clock. Every storm that passes is another chance for it to come down. Removing dead trees on a scheduled basis is always safer and cheaper than dealing with an emergency after the fact.
Address stumps and root hazards. Old stumps from previously removed trees can interfere with the root systems of nearby living trees. Stump grinding clears the way for healthier root growth and eliminates tripping hazards that become more dangerous when covered by storm debris.
Know what is near your trees. Walk your property and note which trees are close to your house, garage, driveway, fence, power lines, or neighbor’s structures. These are the trees that need the most attention. A tree in the middle of an open field is low risk even if it falls. A tree 15 feet from your roof is a different story.
After a Storm: What to Do and What Not to Do
If a storm has already hit and you have damaged trees on your property, resist the urge to start cleaning up yourself. Storm-damaged trees are unpredictable. Branches that look stable can drop without warning. Trees leaning against power lines are extremely dangerous.
Here is the right approach after storm damage:
Stay away from downed trees and branches, especially if they are near power lines. Call your utility company first if wires are involved.
Document the damage. Take photos of every damaged tree, every broken branch, and any property damage. You will need this for insurance claims.
Call a professional. A licensed tree service can assess the damage safely and determine which trees can be saved and which need to come down. Some trees that look badly damaged can actually recover with proper pruning. Others that look fine may have hidden damage that makes them likely to fail in the next storm.
Bumblebee Tree Service offers emergency tree service across Gloucester County and the surrounding areas. If a storm has damaged trees on your property, our crew can respond quickly and get the situation under control safely.
The Pattern Is Predictable
South Jersey will keep getting storms. Nor’easters will keep rolling up the coast. Summer thunderstorms will keep producing 50 to 70 mph gusts. The question is not whether your trees will face high winds. The question is whether they are ready for it.
The homeowners who invest in regular inspections, proper pruning, and timely removal of problem trees are the ones who get through storm season without a crisis. The ones who wait are the ones calling for emergency service at 2 AM while rain pours through a hole in their roof.
Do not wait for the next storm to make the decision for you.
Contact Bumblebee Tree Service today for a free tree inspection and estimate.
