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Earthquake Info

Recent Activity

3.9 magnitude earthquake 12 km from CascadeIdahoUnited States

UTC time: Sunday, March 12, 2023 03:03 AM
Your time: Saturday, March 11, 2023 at 8:03 PM MST
Magnitude Type: ml
USGS status: Reviewed by a seismologist
Reports from the public: 189 people

Recent Earthquakes Near Idaho
Recent Idaho Earthquakes
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Idaho Ranks 6th in the U.S.                                
Rank State Strong Earthquakes (1973-2003)
1. Alaska 12,053
2. California 4,895
3. Hawaii 1,533
4. Nevada 788
5. Washington 424
6. Idaho 404
7. Wyoming 217
8. Montana 186
9. Utah 139
10. Oregon 73

earthquake state rank - Copy

For more information on the most prone states: The Most Earthquake Prone US States

Earthquakes in Gem County 2021
4 quakes above magnitude 4
64 quakes between magnitude 3 and 4
717 quakes between magnitude 2 and 3
556 quakes below magnitude 2 that people normally don't feel.
Strongest quake: Mag. 4.0 | 64 mi NE of BoiseAda CountyIdahoUSA - November 23rd, 2021
Latest Earthquakes in Gem County, Idaho, USA,

What to do in an Earthquake

Drop_Cover_Hold_On_ENG_Blue_Orange_RGB - Copy 

Federal, state, and local emergency management experts and other official preparedness organizations all agree that "Drop, Cover, and Hold On" is the appropriate action to reduce injury and death during earthquakes.


Your past experience in earthquakes may give you a false sense of safety; you didn't do anything, or you ran outside, yet you survived with no injuries. Or perhaps you got under your desk and others thought you overreacted. However, you likely have never experienced the kind of strong earthquake shaking that is possible in much larger earthquakes: sudden and intense back and forth motions of several feet per second will cause the floor or the ground to jerk sideways out from under you, and every unsecured object around you could topple, fall, or become airborne, potentially causing serious injury. This is why you must learn to immediately protect yourself after the first jolt... don't wait to see if the earthquake shaking will be strong!

In most situations, if you feel shaking or get an earthquake alert, immediately:

 where you are, onto your hands and knees. This position protects you from being knocked down and reduces your chances of being hit by falling or flying objects.

COVER your head and neck with one arm and hand.
If a sturdy table or desk is nearby, crawl underneath for shelter.
If no shelter is nearby, crawl next to an interior wall.
Stay on your knees; bend over to protect vital organs.

until the shaking stops.
Under shelter: hold on to it with one hand; be ready to move with your shelter if it shifts

No shelter: hold on to your head and neck with both arms and hands.
Or adapt to your situation. If you have difficulty getting onto the ground, or cannot get back up again without help, then follow these recommendations:

If you use a cane: DROPCOVER, and HOLD ON or sit on a chair, bed, etc. and cover your head and neck with both hands. Keep your cane near you so it can be used when the shaking stops.

If you use a walker or wheelchair: LOCK your wheels (if applicable). If using a walker carefully get as low as possible. Bend over and COVER your head/neck with your arms, a book, or a pillow. Then HOLD ON until the shaking stops.

For other accessibility recommendations see

Taking the proper actions described in this page, above and below, can save lives and reduce the risk of injury. Everyone, everywhere, should learn and practice what to do during an earthquake, whether at home, work, school, or traveling.

Why Drop, Cover, and Hold On?

Our special report explains why official rescue teams, emergency preparedness experts, and others recommend "Drop, Cover, and Hold On" as the best way, in most situations, to protect yourself during earthquake shaking.

The report also describes why running outside, standing in a doorway, or the "triangle of life" are dangerous or out-dated recommendations.


Wherever you are, protect yourself! It is important to think about what you will do to protect yourself wherever you are. What if you are driving, in a theater, in bed, at the beach, etc.? Step 5 of the Seven Steps to Earthquake Safety describes what to do in various situations, no matter where you are when you feel earthquake shaking.

Earthquake Safety Video Series: Simple videos demonstrating what to do to protect yourself in various situations (near a table, no table nearby, in a theater/auditorium, at the shore, while driving, and more to come).

Learn about Drop, Cover, Hold On from

The main point is to not try to move but to immediately protect yourself as best as possible where you are. Earthquakes occur without any warning and may be so violent that you cannot run or crawl; you therefore will most likely be knocked to the ground where you happen to be. You will never know if the initial jolt will turn out to be the start of the big one. You should Drop, Cover, and Hold On immediately!

In addition, studies of injuries and deaths caused by earthquakes in the U.S. over the last several decades indicate that you are much more likely to be injured by falling or flying objects (TVs, lamps, glass, bookcases, etc.) than to die in a collapsed building. Drop, Cover, and Hold On offers the best overall level of protection in most situations.

As with anything, practice makes perfect. To be ready to protect yourself immediately when the ground begins to shake, practice Drop, Cover, and Hold On as children do in school at least once each year.

What NOT to do:

DO NOT get in a doorway! An early earthquake photo is a collapsed adobe home with the door frame as the only standing part. From this came our belief that a doorway is the safest place to be during an earthquake. In modern houses and buildings, doorways are no safer, and they do not protect you from flying or falling objects. Get under a table instead!

DO NOT run outside! Trying to run in an earthquake is dangerous, as the ground is moving and you can easily fall or be injured by debris or glass. Running outside is especially dangerous, as glass, bricks, or other building components may be falling. You are much safer to stay inside and get under a table.

DO NOT believe the so-called "triangle of life"! In recent years, an e-mail has circulated which recommends potentially life-threatening actions, and the source has been discredited by leading experts. Read our special report to learn more.