Californians aren't the only ones who need to know earthquake-safety basics: Forty-five U.S. states and territories are at a moderate or very high risk of earthquakes, which strike without warning.
How to stay safe: "If you're inside when the shaking starts, drop, cover, and hold on," says Judge. Stay away from windows, protect your head and neck with pillows or blankets, and take cover under a sturdy table or mattress, if possible. If you're outside, find a clear spot—ideally away from buildings, power lines, and trees—drop to the ground, try to cover yourself, and stay put until the shaking stops, says Judge. If you're in a car, find a clear spot, stop, and stay in the car until the quake is over.
No matter what: Don’t run outside. Stay put, and once the quake is over, if you must leave the building, take the stairs instead of an elevator. There could be power outages or aftershocks.