Most tree care can be scheduled weeks or months in advance. But some situations demand an immediate response. A tree that has crashed through your roof, a massive branch dangling over your driveway, or a trunk that has split down the middle during a storm — these are emergencies where waiting until Monday is not an option.
Knowing when a tree situation qualifies as a genuine emergency can save you from property damage, personal injury, and costly delays. Here are eight scenarios that require an emergency arborist and what you should do in each one.
1. A Tree Has Fallen on Your House or Car
This is the most obvious tree emergency. Whether it is a full tree failure or a large limb that has punched through your roof, a tree on a structure requires immediate professional response.
Why It Is Urgent
A fallen tree can compromise your roof’s structural integrity, allow water intrusion, damage electrical wiring, and create an ongoing collapse risk. Every hour of delay increases the potential for secondary damage, especially if rain is in the forecast.
What to Do
- Evacuate the affected area of your home immediately
- Call 911 if anyone is trapped or injured
- Do not attempt to remove the tree yourself — shifting weight can cause further collapse
- Contact your insurance company to start a claim
- Call an emergency arborist to safely remove the tree and tarp the roof
What NOT to Do
Do not climb on the roof to assess damage. Do not use a chainsaw on a tree that is under tension or resting on a structure. The forces involved in a loaded tree are extreme and unpredictable.
2. A Tree Is Leaning Suddenly After a Storm
If a tree that was standing straight yesterday is now leaning at an angle after a storm, the root plate may be failing. This is different from a tree that has always had a natural lean. A sudden change in lean angle is a warning sign of imminent failure.
Why It Is Urgent
A shifting root plate means the tree’s anchor in the ground is compromised. High winds, saturated soil, or additional rain can trigger a full uprooting. Bay Area winter storms frequently cause this type of failure, particularly in clay soils common throughout Redwood City and the Peninsula.
What to Do
- Keep everyone away from the potential fall zone, which extends in all directions at least the full height of the tree
- Look for heaving soil around the base — cracked or raised ground confirms root plate failure
- Call an emergency arborist for assessment and stabilization or removal
What NOT to Do
Do not assume the tree will “settle back” into position. Do not try to prop it up with supports. A leaning tree with a compromised root system is under enormous tension and can fail without warning.
3. A Large Branch Is Hanging Over Your Roof or Power Lines
Hanging branches, sometimes called widow-makers in the industry, are branches that have broken free from the tree but are caught in the canopy above. They can fall at any moment without warning.
Why It Is Urgent
A hanging branch over a roof, walkway, driveway, or power line is a direct threat to anyone or anything beneath it. Wind, vibration, or even the branch’s own weight shifting over time can release it suddenly.
What to Do
- Block off the area beneath the hanging branch
- Do not park cars or allow foot traffic underneath
- Call an emergency arborist with experience in technical rigging
- If the branch is on power lines, call PG&E at 1-800-743-5000 first, then call your arborist
What NOT to Do
Do not attempt to shake, pull, or cut a hanging branch from the ground. The branch may weigh hundreds or even thousands of pounds and its fall path is unpredictable once it starts moving.
4. A Tree Is Blocking a Road or Driveway
A downed tree blocking your driveway or a public road creates immediate access problems. Emergency vehicles, daily commuters, and your own family may be unable to pass.
Why It Is Urgent
Blocked access is a safety hazard. If an ambulance or fire truck cannot reach your home, the consequences could be severe. Additionally, downed trees on public roads create liability exposure for the adjacent property owner in some jurisdictions.
What to Do
- Set up warning markers (cones, flashlights, flares) if the tree is on a road
- Call 911 or the city’s public works department if it is on a public road
- Call an emergency arborist for private property obstructions
- Document the scene with photos for insurance purposes
What NOT to Do
Do not try to drive over or around a downed tree, especially at night. Hidden branches, wires, or unstable sections can damage your vehicle or cause injury.
5. Exposed or Heaving Roots After Heavy Rain
Bay Area rainy seasons can dump significant water in short periods. When soil becomes saturated, tree roots can lose their grip. Visible signs include cracked or buckled ground around the tree base, exposed roots that were previously underground, and water pooling in new areas around the root zone.
Why It Is Urgent
Soil saturation is the leading cause of large tree failures in the Bay Area. A tree with heaving roots in saturated soil can topple with minimal wind. The risk is highest immediately after heavy rains and during subsequent storms.
What to Do
- Assess the fall zone — identify everything the tree could hit if it fell in any direction
- Move vehicles and outdoor furniture out of the fall zone
- Call an arborist for an emergency risk assessment
- Monitor conditions if the arborist determines the tree is not in immediate danger
What NOT to Do
Do not dig around the roots to investigate. Disturbing saturated soil around a compromised root zone can accelerate failure.
6. Splitting Trunk or Major Crotch Failure
A trunk that is splitting apart or a major branch union (crotch) that is separating is a structural emergency. You may hear cracking sounds, see visible gaps opening in the wood, or notice bark splitting along the trunk.
Why It Is Urgent
Trunk splits can progress from a small crack to a complete failure within hours. Once the structural fibers begin separating, the tree’s ability to support its own weight deteriorates rapidly. Large trees with trunk splits can fail catastrophically.
What to Do
- Clear the area around the tree immediately
- Listen for cracking sounds that indicate ongoing failure
- Call an emergency arborist who can assess whether cabling, bracing, or removal is needed
What NOT to Do
Do not attempt to bolt, strap, or brace the trunk yourself. Improper hardware can accelerate splitting, and working near a failing trunk is extremely dangerous without professional equipment and training.
7. A Tree on Fire or Struck by Lightning
Lightning strikes are less common on the Peninsula than in inland areas, but they do occur. A direct lightning strike can split a tree trunk, ignite internal wood, or cause explosive bark removal. During fire season, trees can also catch fire from embers or nearby brush fires.
Why It Is Urgent
A burning tree is both a fire hazard and a structural hazard. The internal wood may continue to smolder for hours or days after visible flames are extinguished. A lightning-struck tree may be structurally compromised even if it does not burn.
What to Do
- Call 911 immediately for any tree fire
- Evacuate the area and keep everyone at a safe distance
- After the fire department clears the scene, call an emergency arborist to assess structural integrity
- Do not assume the tree is safe just because the fire is out
What NOT to Do
Do not attempt to extinguish a tree fire with a garden hose. A large tree fire can reignite from deep internal combustion. Leave fire suppression to the fire department.
8. Construction Damage to the Root Zone
If a contractor has trenched, excavated, or driven heavy equipment through the root zone of a large tree on your property, the tree may be in danger of delayed failure. This is a less obvious emergency, but it can be just as serious.
Why It Is Urgent
Severing major roots removes the tree’s structural support. The tree may not show symptoms for weeks or months, but the damage is done. Meanwhile, the weakened root system makes the tree vulnerable to toppling during the next storm or wind event.
What to Do
- Stop the construction activity in the root zone immediately
- Document the damage with photos and measurements
- Call an arborist for an emergency root zone assessment
- Notify your contractor — they may be liable for the damage and any resulting tree failure
What NOT to Do
Do not ignore root zone damage because the tree “looks fine.” Trees can stand for months on a compromised root system before failing suddenly and without warning.
Emergency Tree Service: What to Expect
Response Times
Reputable emergency tree services in the Bay Area typically respond within 2 to 4 hours for urgent situations. During major storm events, response times may extend to 12-24 hours due to high call volumes.
Cost Expectations
Emergency tree work typically ranges from $500 to $3,000 or more depending on:
- Tree size and complexity
- Time of day (after-hours and weekend work costs more)
- Equipment required (cranes, specialty rigging)
- Cleanup and debris removal scope
- Permit requirements for protected trees
Emergency work generally costs more than scheduled tree service due to the urgency, after-hours labor, and rapid mobilization required.
Insurance Coverage
Most homeowner’s insurance policies cover tree removal when a tree has damaged an insured structure (your house, garage, fence, etc.). Key things to know:
- Damage to structures is typically covered under your dwelling coverage
- Tree removal costs are often covered up to a sublimit, commonly $500-$1,000 per tree
- Trees that fall but damage nothing may not be covered for removal
- Document everything with photos and get written estimates before starting work
- Contact your insurer before authorizing work unless there is an immediate safety risk
Firefighter Tree Service: 24/7 Emergency Response
At Firefighter Tree Service, we understand that tree emergencies do not follow business hours. Our crew is available 24 hours a day, 7 days a week for emergency tree situations across Redwood City and the surrounding Bay Area.
With a background rooted in emergency response, our team is trained to handle high-risk situations safely and efficiently. We arrive equipped to assess the hazard, stabilize the situation, and perform emergency removal when necessary.
Do not wait for a dangerous tree situation to get worse. Call Firefighter Tree Service at (650) 454-0373 for immediate emergency response. We will be there when you need us most.
