Earthquake Preparedness for California Families: A 2026 Guide

If you live in California, you already know an earthquake is coming. The question is not whether — it is when, how big, and whether your family will be ready.

The USGS estimates a 72% probability of a magnitude 6.7 or greater earthquake striking the San Francisco Bay Area within the next 30 years. In Southern California, the number is similar. The San Andreas, Hayward, and Puente Hills faults are all overdue for major activity.

This guide covers what actually matters for California families. Not the exhaustive government checklist. The practical version — what to do this weekend, this month, and long-term.

1. Build a real earthquake kit (not a fantasy one)

Most earthquake kits people buy end up in a garage they cannot reach if their house is damaged. Keep one at home, one at work, and one in each car. The car kit is the one that matters most because that is often where you are when it happens.

The essentials for each kit:

• Water — one gallon per person per day, minimum three days
• Food — non-perishable, three days worth
• Flashlight and spare batteries (not just your phone light)
• First aid kit with any prescription medications
• Cash — ATMs and card readers will not work
• Sturdy shoes and gloves — broken glass is everywhere after a quake
• N95 masks — dust is the immediate hazard
• Portable phone charger, fully charged
• Copies of ID and insurance in a waterproof bag

2. Have a family communication plan

Cell networks will be overloaded within minutes of a major quake. Landlines may also fail. Your family needs a plan that does not depend on being able to call each other in the first hour.

Pick an out-of-state contact. A cousin in Texas or an aunt in Arizona. Everyone in your family calls or texts this person to check in. Long-distance lines often work when local lines are jammed.

Choose two meeting spots. One near your home for small events, one outside the neighborhood in case you cannot get home. Everyone knows both.

Practice the drop-cover-hold-on drill. Yes, even with kids. Especially with kids. Do it during the Great California ShakeOut every October.

3. Sign up for earthquake alerts

California has one of the best earthquake early warning systems in the world — ShakeAlert. It can give you seconds of warning before the shaking arrives. That is enough to drop, cover, and hold on before the ground moves.

But ShakeAlert only alerts you if you are in the shaking zone. If you have parents in LA and you live in the Bay Area, ShakeAlert will not tell you about their quake. That is where a monitoring app that tracks saved locations becomes essential — you know within minutes when any place you care about is affected, even if you are 400 miles away.

4. Secure your home now, not later

Ninety percent of injuries during earthquakes come from falling objects. This is preventable.

• Bolt tall furniture to the wall — bookshelves, dressers, TV stands
• Move heavy items to lower shelves
• Install cabinet latches in the kitchen so dishes do not fly out
• Anchor the water heater and secure the gas line
• Know where the gas shutoff is and keep a wrench nearby

If you own an older home built before 1980, consider a seismic retrofit. California offers rebates through the Earthquake Brace + Bolt program for eligible homeowners.

5. Consider earthquake insurance

Standard homeowners insurance does not cover earthquake damage in California. Only about 10% of California homeowners carry earthquake coverage. The California Earthquake Authority (CEA) is the largest provider, and while premiums have risen, so has the cost of rebuilding without it.

Whether it makes sense depends on your home value, mortgage status, and risk tolerance. But if a major quake damages your house and you have no coverage, you are on the hook for repairs that can exceed the mortgage.

The one thing most families skip

Everyone focuses on the physical prep — the kit, the bolts, the drills. Almost nobody has a plan for the emotional aftermath, or for checking on family members who live in different cities.

If your parents live in Sacramento and you live in San Diego, and a 6.5 hits their county at 3am, you will spend hours trying to reach them while they may be trying to reach you. Both phones will be blowing up trying to get through jammed networks.

Apps like TerraSentri exist for exactly this scenario. You save your parents' address, your kids' school, your workplace, and it tells you within minutes when an earthquake occurs near any of them. Not a generic nationwide alert. A specific notification about the specific place you are worried about.

It does not replace the emergency kit or the family plan. But it does mean you find out about the earthquake before you have to make the phone call.