You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
Join the #1 community for gun owners of the Northwest
We believe the 2nd Amendment is best defended through grass-roots organization, education, and advocacy centered around individual gun owners. It is our mission to encourage, organize, and support these efforts throughout Oregon, Washington, Idaho, Montana, and Wyoming.
Discuss firearms and all aspects of firearm ownership
Join others in organizing against anti-gun legislation
Buy, sell, and trade in our classified section
Find nearby gun shops, ranges, training, and other resources
Discover free outdoor shooting areas
Stay up to date on firearm-related events
Share photos and video with other members
...and much more!
An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth, resulting from the sudden release of energy in the Earth's lithosphere that creates seismic waves. Earthquakes can be violent enough to toss people around and destroy whole cities. The seismicity or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time.
Earthquakes are measured using measurements from seismometers. The moment magnitude is the most common scale on which earthquakes larger than approximately 5 are reported for the entire globe. The more numerous earthquakes smaller than magnitude 5 reported by national seismological observatories are measured mostly on the local magnitude scale, also referred to as the Richter magnitude scale. These two scales are numerically similar over their range of validity. Magnitude 3 or lower earthquakes are mostly imperceptible or weak and magnitude 7 and over potentially cause serious damage over larger areas, depending on their depth. The largest earthquakes in historic times have been of magnitude slightly over 9, although there is no limit to the possible magnitude. Intensity of shaking is measured on the modified Mercalli scale. The shallower an earthquake, the more damage to structures it causes, all else being equal.
At the Earth's surface, earthquakes manifest themselves by shaking and sometimes displacement of the ground. When the epicenter of a large earthquake is located offshore, the seabed may be displaced sufficiently to cause a tsunami. Earthquakes can also trigger landslides, and occasionally volcanic activity.
In its most general sense, the word earthquake is used to describe any seismic event — whether natural or caused by humans — that generates seismic waves. Earthquakes are caused mostly by rupture of geological faults, but also by other events such as volcanic activity, landslides, mine blasts, and nuclear tests. An earthquake's point of initial rupture is called its focus or hypocenter. The epicenter is the point at ground level directly above the hypocenter.
Scientists estimate a tsunami could reach the Washington coastal areas such as Westport and Long Beach in as little as 15 minutes, and the maps show the challenges people could face in getting to higher ground that fast. Estimates are that some places in Long Beach could take a 75 minute walk...
Last year I attended a prep talk about earthquakes.
Most of it I knew already, but one thing stood out; earthquake straps.
Not too worried about most things in my house, except the headboard of my bed which is heavy oak and not attached to anything - just sitting there on top of the bed...
Questions raised over secrecy around Seattle quake study
Findings indicate Seattle would lose all water pressure within 24 hours of a catastrophic quake and need at least two months to fully restore service.
I'm sure all ya'll have heard about the earthquake in Alaska. A friend posted some pics.
Rock slide on the Seward Highway took out this truck.
This is the Safeway in Eagle River. At least what's left of it.
Upgraded to 7.7!
Tsunami alert as powerful quake hits off Russia’s Kamchatka
If you are on the coast watch the news, Who knows what this might turn into but best be ready if you are close to the water!
Burke: When ‘the big one’ hits should ants help grasshoppers? | HeraldNet.com
By Tom Burke
The short version of the Greek storyteller Aesop’s fable, “The Ant and the Grasshopper,” goes: Ant works all summer laying in food; grasshopper spends summer making music. Comes winter the ant eats, the...
As beginner prepper, I learned/realized how important it is to assess & calculate what risks are most likely in our region in order to prepare for it. And so I think most people would agree that the Cascadia earthquake is the most likely where I live which is the suburbs of Portland, Oregon as...
How is your Earthquake Kit? Risk Of Cascadia Quake Elevated As Puget Sound 'Slow Slip' Event Begins
7 months of Stress applied in matter of days .
Risk Of Cascadia Quake Elevated As Puget Sound 'Slow Slip' Event Begins
Considering this is likely the most destructive natural disaster that could impact our region, I thought starting a thread in which we can discuss the eventuality, compare notes, ponder scenarios, and consider what can be done to be more prepared. As some may not be completely familiar with the...