Power surge during a storm: what to do?

A power surge is a sudden spike in voltage that can damage electronics, start fires, and pose safety risks. During a storm, lightning strikes and grid switching are common causes. Knowing what to do can protect your home and family.

What is happening?

Power surges can occur when lightning strikes near power lines or when the utility company reroutes power. Even if your home isn't directly hit, surges can travel through wiring and damage plugged-in devices. Most surges last only a fraction of a second but can be intense.

Emergency warning

If you see smoke, flames, or smell burning, evacuate immediately and call your local emergency services. Do not attempt to fight the fire yourself.

What to do first

1. Unplug sensitive electronics such as computers, TVs, and chargers. Do this only if it is safe and the storm is not immediately overhead.
2. Avoid using corded phones and plumbing during the storm, as they can conduct electricity.
3. Stay away from windows and avoid touching electrical outlets or appliances.
4. If you see sparks or smoke, evacuate and call emergency services.

What NOT to do

• Do not touch electrical equipment or outlets if you suspect damage or if they are wet.
• Do not use a generator indoors or in enclosed spaces due to carbon monoxide risk.
• Do not attempt to reset breakers or replace fuses if you are unsure or if the area is wet.
• Do not ignore burning smells or sparks; treat them as emergencies.

After the storm

1. Check for damage to your electrical system. Look for scorched outlets, tripped breakers, or burning smells.
2. Reset tripped breakers only if it is safe and you are knowledgeable. If breakers trip repeatedly, call a qualified electrician.
3. Replace damaged electronics or have them inspected by a professional before use.
4. Consider surge protection for your home. Whole-home surge protectors can be installed by a licensed electrician.

When to call for help

• Call emergency services if you see fire, smoke, or downed power lines.
• Call a licensed electrician if you suspect damage to your electrical panel or wiring.
• Call your utility company to report downed lines or outages.

How to prevent surge damage

• Install whole-home surge protection.
• Use point-of-use surge protectors for sensitive electronics.
• Unplug electronics during storms when possible.
• Ensure your home has a grounded electrical system.

Stay safe and act quickly if you suspect danger. For future storms, consider professional surge protection to safeguard your home.