Arizona’s extreme climate can turn an otherwise healthy-looking tree into a serious hazard in a matter of minutes. Sudden monsoon storms bring powerful winds and heavy rainfall that can weaken branches, uproot trees, and cause unexpected damage and emergency situations. At the same time, desert soil can become saturated quickly, reducing the stability of a tree’s root system. Years of intense heat, drought, poor soil conditions, and improper planting can further weaken trees, making them more vulnerable when severe weather strikes. For Arizona homeowners and businesses, understanding these risks is essential to recognizing potential tree hazards before they result in property damage or safety concerns. Here are 10 warning signs and what to look for.
First and foremost, a tree that has developed a sudden new lean — especially after a storm — is a serious red flag. Not all leaning trees are emergencies. A tree that has always had a slight lean may be perfectly stable. However, a tree that has shifted its angle recently is telling you something important. Its root system may have partially failed.
Look for soil lifting or cracking around the base of the tree. This is a clear sign the roots have moved. Consequently, the tree is no longer anchored securely. The next wind gust could bring it down entirely — without warning.
Furthermore, a vertical crack or split in the main trunk is one of the most serious structural failures a tree can have. This type of damage means the two main sections of the trunk are no longer structurally unified. They can separate completely under wind load — or even under their own weight.
A cracked trunk near your home is a genuine emergency. A crack that extends deep into the wood — not just the bark surface — needs immediate professional assessment. Don’t wait and hope it stays together.
Moreover, hanging branches — called widow makers — are one of the most deceptive hazards in the tree world. They look like they’re staying up. They are not. A widow maker can fall at any moment — in wind, in rain, or on a perfectly calm day.
Large hanging branches above your driveway, patio, pool, vehicle, or anywhere people walk need to come down immediately. Our emergency tree service team can handle widow maker removal quickly and safely — usually within the same day you call. The USDA Forest Service notes that urban trees in hot, arid climates with compacted soils are significantly more prone to structural failure than trees in natural environments.
Any tree or branch making contact with power lines is a utility emergency first — and a tree emergency second. Do not approach it. Do not attempt to cut anything near power lines under any circumstances.
Call your utility company immediately to report the contact. Then contact our emergency tree service team. We coordinate with utility companies on power line situations and have the training and equipment to work safely in these conditions.
Moreover, when a storm saturates Arizona’s dense caliche soil, root systems can shift or partially pull out of the ground. A tree with significant root exposure — soil lifting, roots visible at the surface, or the tree pulling away from the ground on one side — has lost critical anchoring.
In this condition, the tree is highly unstable. As a result, even a moderate wind gust can finish what the storm started. A partially uprooted tree near any structure needs to be assessed — and almost always removed — immediately.
Additionally, if a tree or large branch has already come down on your home, fence, garage, or pool — that is an immediate emergency. Do not try to move it yourself.
Fallen trees are under tension. Cutting the wrong place can cause the tree to roll, spring, or shift dangerously. Beyond that, a tree resting on your roof adds significant weight that accelerates structural damage with every passing hour — especially if more rain follows.
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Additionally, internal decay is invisible from the outside — but it dramatically reduces a tree’s structural integrity. Tap the trunk in several places. A solid trunk produces a dense thud. A hollow or decayed trunk produces a noticeably hollow, resonant sound.
If your tree sounds hollow — especially in the main trunk or at the base — it may be far more compromised than it looks. Consequently, that tree needs a professional assessment right away. Internal decay combined with storm damage is one of the most dangerous combinations our arborists encounter.
Furthermore, mushrooms or fungal growth at or near the base of a tree indicate active fungal decay inside the root system or lower trunk. The root system may already be significantly compromised — even if the tree looks healthy above ground.
A tree with root rot gets worse over time — not better. In other words, this does not resolve itself. It requires immediate professional assessment and often emergency removal before the next storm makes the decision for you.
Moreover, a tree with more than 50% of its canopy dead is not just stressed — it’s likely dying or already dead. Dead wood is brittle. It breaks unpredictably under wind. During a storm, a tree full of dead wood becomes a source of flying debris.
Use the scratch test. Gently scratch the bark on several branches with your fingernail. Green, moist tissue underneath means the branch is alive. Brown, dry tissue means it’s dead. If most branches test dead throughout the canopy — that tree needs to come down before the next storm.
Finally, target assessment is a critical part of any hazard evaluation. The exact same damage can be a low-priority situation or a genuine emergency — depending entirely on what’s underneath the tree.
High-risk targets include:
Simply put, a damaged tree hanging over an open dirt area can often wait for a scheduled appointment. That same tree hanging over your master bedroom cannot wait an hour.
The storm may be over, but some tree damage can take days to appear. Root shifts, internal cracks, and pest activity may not be immediately visible.
Watch your trees closely for 3–7 days after a major storm:
Walk your property after significant rainfall, too. Saturated soil can cause weakened roots to shift further, creating new hazards.
If you notice any of these signs, contact our certified arborists for a post-storm assessment. Catching damage early can prevent a manageable issue from becoming an emergency.
When it comes to hazard trees, time matters. Every hour a compromised tree remains near your home or property increases the risk of failure.
Storms don’t give you a second warning.
A tree weakened by one monsoon storm may not survive the next. Previous damage can make a tree significantly more vulnerable to future storms.
Hidden damage can create serious hazards.
Shifted roots, internal cracks, and split bark aren’t always visible from the ground. A tree that looks fine may still be structurally compromised.
Decay and pests can spread quickly.
Storm wounds can give bark beetles, wood borers, and fungi an entry point. The longer damage goes untreated, the greater the risk to the tree and surrounding property.
Liability can increase when hazards are ignored.
If a known hazardous tree falls and damages property or injures someone, the property owner may face financial or legal consequences.
Bottom line: Emergency tree removal is often far less costly than the damage a failing tree can cause. Acting quickly protects your property, finances, and safety.
Not sure what to do in the next few minutes? Here’s a clear, simple action plan:
Keep everyone — family members, pets, and guests — away from the tree. Establish a clear perimeter. Don’t let anyone walk under or near a tree you believe may be compromised. Safety first, always.
Look carefully for any branches or limbs touching overhead power lines. If you see contact, do not approach the area under any circumstances. Call your utility company immediately and stay back until they confirm it’s safe.
Take clear photos and video of the tree from multiple angles. Capture the base, the trunk, the canopy, and any structures or vehicles nearby. This documentation is critical for your insurance claim. Doing this before any cleanup begins protects your coverage.
If the tree has caused damage to your home, fence, vehicle, or any other structure — call your insurance agent before any major work begins. Report the damage, note the storm date and time, and ask about the claims process for emergency tree removal.
This is the most important call you can make. Our emergency tree service team is available 24 hours a day, 7 days a week — including nights, weekends, and holidays. When you call, describe the situation clearly: the size of the tree, what it’s near, whether anything has already fallen, and whether there’s any power line contact. We’ll dispatch a certified arborist to your property as quickly as possible.
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This bears repeating. Do not attempt to cut, move, or brace a large fallen or compromised tree yourself. Fallen trees are under tension. Cutting the wrong spot causes the tree to spring, roll, or shift without warning. Leave all large tree work to our certified, insured crew — every time.
When you call PROS Tree & Landscape for emergency tree service, here’s exactly what happens — from your first phone call to final cleanup:
📞 When You Call:
Our team answers 24 hours a day, 7 days a week. We ask you a few quick questions about the situation — the size of the tree, what it’s near, and the nature of the damage. Based on what you describe, we dispatch the right crew and equipment for your specific situation. We give you an estimated arrival window so you know what to expect.
When We Arrive:
Our certified arborist assesses the situation from a safe distance first. We evaluate the tree’s lean, the root zone, the canopy condition, the target zone, and the safest approach for removal or stabilization. We explain exactly what we see and what we recommend — clearly and without pressure — before any work begins.
During the Removal:
Hazard tree removal requires specialized rigging, sectioning, and cutting techniques — especially near structures. We remove the tree in carefully controlled sections, directing each piece away from your home and property. Our crew works efficiently, professionally, and safely at every step.
After the Work Is Done:
All debris, branches, logs, and wood chips are removed from your property before we leave. Your yard is left clean, safe, and ready for whatever comes next. We do a final walkthrough with you to make sure you’re completely satisfied before we pack up.
Documentation and Insurance Support:
On request, our team provides a written damage report for your insurance claim. We’re experienced in working alongside insurance adjusters and can help make the documentation process straightforward. Keep all receipts — your insurance company will need them.
Choosing the right tree company in Phoenix isn’t just about price — it’s about trust, expertise, and knowing the job will be done safely and correctly the first time. PROS Tree & Landscape has been serving the Greater Phoenix Metro area since 2006 and now servicing Tucson. We have more ISA-certified arborists on staff than any other tree service company in the area — which means every job is handled by trained professionals, not just crew workers. From emergency storm response to full backyard transformations, we bring nearly 20 years of Arizona expertise to every property we touch. One call. One team. Done right.
Here’s what every emergency job includes:
You don’t have to guess. Our certified arborists provide honest, no-pressure assessments across the entire Phoenix Valley. We’ll tell you exactly what we see — whether that’s an immediate emergency, a scheduled removal, or a safe monitoring plan.
Don’t wait for the next storm to find out you had a hazard tree in your yard.
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👉Contact PROS Tree & Landscape
Any damaged or compromised tree that poses an immediate risk of falling on a home, vehicle, power line, or person. Key signs include sudden leaning with root movement, large trunk cracks near structures, fallen trees on roofs, branches on power lines, and widow makers over occupied areas. When in doubt — call us. Free assessments are available 24/7.
We respond 24 hours a day, 7 days a week across the entire Phoenix Valley and Tucson. Response times vary based on call volume — especially after major monsoon storms — but we always prioritize situations involving trees on structures, power lines, and occupied areas. Call (602) 216-0400 and describe your situation so we can dispatch accordingly.
It depends. If a tree falls and damages a structure on your property, the damage is generally covered under your homeowner’s policy. If a tree falls in your yard without hitting a structure, removal costs are often not covered. Always document damage with photos and video before work begins, and call your insurance agent before major cleanup starts.
Sometimes yes. Strategic pruning to reduce wind load, cable bracing to stabilize weak unions, or soil treatment to support root health can sometimes reduce risk enough to save the tree. Our certified arborists always explore every option before recommending removal. However, when a tree poses an immediate and unacceptable risk to people or structures, removal is the only responsible choice.
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