Question 1

Is Los Altos at risk for earthquakes?

Accepted Answer

Yes, Los Altos is located in Santa Clara County within the seismically active San Francisco Bay Area. The region sits near several major fault systems, including the San Andreas Fault. Scientists estimate a 72% probability of a magnitude 6.7 or greater earthquake in the Bay Area within the next 30 years.

Question 2

What should I do if I feel an earthquake in Los Altos?

Accepted Answer

If you feel shaking in Los Altos, remember "Drop, Cover, and Hold On." Drop to your hands and knees, take cover under a sturdy desk or table, and hold on until the shaking stops. Stay away from windows, exterior walls, and anything that could fall. If you're outdoors, move away from buildings, power lines, and trees.

Question 3

How do I report feeling an earthquake in Los Altos?

Accepted Answer

You can report feeling an earthquake in Los Altos using Bay Tremor's "Did You Feel It?" feature or through the USGS website. Your reports help scientists understand earthquake intensity distribution and improve hazard assessments for Santa Clara County.

Question 4

What is the nearest fault line to Los Altos?

Accepted Answer

The nearest major fault to Los Altos is the San Andreas Fault. This fault is part of the San Andreas Fault system and is capable of producing significant earthquakes. Residents should maintain emergency supplies and have an earthquake preparedness plan.

Question 5

How often do earthquakes occur near Los Altos?

Accepted Answer

The Bay Area, including areas near Los Altos, experiences hundreds of small earthquakes each year. Most are too small to feel (below magnitude 2.0), but noticeable earthquakes occur regularly. Larger earthquakes (magnitude 4.0+) that are widely felt happen several times per year across the Bay Area.

Question 6

What earthquake supplies should Los Altos residents have?

Accepted Answer

Los Altos residents should prepare an earthquake kit containing: 3-7 days of water (1 gallon per person per day), non-perishable food, flashlight, batteries, first aid kit, medications, important documents, cash, and a battery-powered radio. Also secure heavy furniture to walls and know how to shut off gas and electricity.

Question 7

How would a San Andreas earthquake affect Los Altos?

Accepted Answer

A major San Andreas Fault earthquake would cause significant shaking in Los Altos. While the fault runs mostly through the Peninsula and South Bay, a magnitude 7.0+ event would be felt strongly throughout Santa Clara County. The 1906 San Francisco earthquake (M7.9) caused widespread damage across the entire Bay Area.

Earthquakes Near Los Altos, California

Earthquake Risk in Los Altos

Los Altos Earthquake FAQ