7.7 magnitude today. FIRST NEWS

New Moon tidal pull strikes again.

RockyRaab: Yikes - that is a big one!
Hopefully injuries/casualties will be at a minimum.
Seems to me a lot of earthquakes have been occurring around the world in the last couple years!
I have only been around for 72 years but again it seems to me that they are more prolific of recent?
Hold into the wind
VarmintGuy

Hey Mon! That's some kick ass stuff !

My nephew and his intended are down there, visiting her family. Hope all are safe.

I think you're on to something there, VG.

https://www.642weather.com/weather/earthquakes-world.php

7.7 is no joke

It is one of my long-standing theories that the stronger tidal pull that happens during the full and new moons can act as the trigger for a fault that's near the breaking point. There seems to be a definite trend that leads to that idea. This one is yet another point of verification.

Geno

72 miles off the coast (good thing) tsunami warning

Jaguartx: Yikes on that list!
It is rather scary perusing it!
I guess I could pose this question (are there more quakes now than there used to be?) to VarmintSon #2 - he is a specialist for the U.S.G.S. and installs seismometers and tsunami detectors from the south end of kalifornicationkopia to the Canadian border and mostly along the west coast in that area.
Not much one can do in this regard - but it would be nice to know if the earths crust is cracking at a higher rate these days than in the past.
Again I hope the Jamaican people are not heavily harmed - I have been there and it is a beautiful country but frankly I did NOT like many of the people I came across there ,while touring, and never intend to go back (I did especially like Ocho Rios and our trip down that river and playing in the falls!).
Hold into the wind
VarmintGuy

Rocky,

do you know did it occur during high tide there or low tide?

Less, or even more, water over the area might be a contributing factor? Awful lot of weight in cubic hectares of H2O.

Geno

Let us know what you find out, VG. Be nice to know how things are now compared to 20 or so years ago.

Ask him if he knows how big one on the San Andrea's would have to be to result in Ca sliding off the shelf, please.

7.7 is the equivalent of 357 Hiroshima bombs


http://earthalabama.com/energy.html#/

Jaguartx: I will.
Also, I despise kalifornicationkopia and kalifornicationkopians to the extreme but I do not wish to see them all drown't in the Pacific - the United States of America would more than likely be better off should that happen but to much human carnage would be involved..
But I take it you are being humorous.
I'll get back to you on the frequency thing.
Hold into the wind
VarmintGuy

It's a BIG one. The Richter Scale isn't proportional; it's a base 10 logarithmic scale. Anything 7 and above is enormous.

In the 18th century Port au Prince Haiti was virtually destroyed by an estimated 8.0 earthquake!

There you go with that history stuff again.

PM on the way to you.

Geno

PS, you're over your limit, and I think I know why. I'll catch up with you at a later date.

FWIW, the Richter scale of magnitude is no longer used.

Richter only goes to 10. Seismologists believe a quake of greater than 10 magnitude is possible.

Moment magnitude is similar.

14 out of the last 16 years we've been down to Negril about this time of the year. So glad we skipped it this year. Hope the damage is minor.

Hmm? I’ll check on that PM stuff.

As for Haiti. Archaeololically speaking there was some awesome stuff recovered there. I was acquainted with one archaeologists. 7.7 is a biggie!!!

Thanks IB.

After studying a bit I can see where the Moment of Magnitude scale more accurately measures the quakes energy. The scales are similar but different. The MofM scale would more accurately measure Big Ones.

I'm not an expert, but if a wave travels let say 5MPH, that would be on shore in about 15 minute ????????

I think the wave can move hundreds of miles per hour in the open ocean.

Surf's up, Florida!

The tidal effect I refer to is not the movement of water, but movement of the earth's crust. The gravitational pull of the sun and moon (combined at the full and new moons) is strong enough to lift trillions of tons of water, and we know it has an equal pull on the earth's crust. The crust bulges in a wave-like pattern as the globe turns under the aligned sun and moon. How much movement is needed to trigger a 'quake if the fault is already cocked to go? Nor does it have to happen at the moment of full tide. That moment may trigger a very small change, but that change ripples and grows until the fault snaps a day or two (and several more almost equal tides) later.

When I heard about this I got my baggies on and my surfboard ready. So far my feet are still dry.

In all seriousness, the chance of having any sizable wave action here in Southeast FL is pretty much non-existant. We are blocked from seismic waves from that area by both Cuba and the Continental shelf. Off to our east are the Cay Sal and Bahama Banks, so we are blocked from wrap around waves there too, which is why the surfing here sucks until you get a lot farther up coast.

Hopefully the folks on the Jamaica coast didn’t have any significant damage either.

True. Seismic waves can travel close to the speed of sound through open ocean water.

Interesting points Rocky,

combination of water being moved off the fault, the earth itself being pulled around, and the stressors already in place.

Science is cool.

Geno

Wow, right between Cuba and Jamaica. What a great opportunity!

Another opportunity for the Clinton Foundation?

All those orphans for the sex trade

They quote 500 MPH for Tsunami in the link below, slowing to 20-30 MPH near shore. That's faster than I though ...

https://www.tsunami.gov/?page=tsunamiFAQ

a lot of earthquakes do not actually generate a tsunami, but better safe than sorry.

Cascadia Fault Line...When this subsections decides to heavho...Shît gonna get real sporty for those of us on the coast...😎

Yes it is, Beav. Faults that break with horizontal movement don't generate tsunamis. Those that shift vertically, with either a rise or drop of the sea floor, do. So can underwater landslides with or without a 'quake.

The first 2 of the 3 Little Pigs didn’t exercise good building practices.

😃


And PoP has a shallow fault. A 5 something got them pretty good few short years back.

Shakin in Miami too

Yes, search Lituya Bay 1958 for a big one!

I don't follow.

I used to have a place north of Tillamook, they said we had about 5 minutes to get up high when that one goes. Now I live just North of a super volcano .. so there is that

RockyRaab and I discussed this at length on an earlier thread...We both suggested getting the finest bottle of liquor made.

Drinking half now, putting the rest away for the big moment...Something about going out with an excellent glass of high dollar scotch in your hand has an appeal.

😎

👍😎

Only one flaw in that scenario. The assumption that half the bottle would be left when the big one cuts loose....

They beggin' for aide before the first wave hit?

And there will be more.

I'm not saying I want that, but with the evidence of the frequency of EQs happening I worry, and I wonder if a 5 or 6 or 7 would instigate calamity.

Yes, but the frequency of those waves is in a very narrow, vary high frequency band. Not the area of damaging waves on land.

I fished out of Lituya in 1980 which was the "understood" period of the release. Nothing happened and has not happened since.

But the waves flushed the mountainside clear and showed clearly 22 years later. Impressive is an understatement.

The 1958 Lituya Bay earthquake occurred at July 9 at 22:15:58 with a moment magnitude of 7.8 and a maximum Mercalli intensity of XI (Extreme). The strike-slip earthquake took place on the Fairweather Fault and triggered a rockslide of 40 million cubic yards (30 million cubic meters and about 90 million tons) into the narrow inlet of Lituya Bay, Alaska. The impact was heard 50 miles (80 km) away,[6] and the sudden displacement of water resulted in a megatsunami that washed out trees to a maximum elevation of 1,720 feet (524 meters) at the entrance of Gilbert Inlet.[7] This is the largest and most significant megatsunami in modern times; it forced a re-evaluation of large-wave events and the recognition of impact events, rockfalls, and landslides as causes of very large waves.

A 2010 model examined the amount of infill on the floor of the bay, which was many times larger than that of the rockfall alone, and also the energy and height of the waves. Scientists concluded that there had been a "dual slide" involving a rockfall which also triggered a release of 5 to 10 times its volume of sediment trapped by the adjacent Lituya Glacier, a ratio comparable with other events where this "dual slide" effect is known to have happened. Lituya Bay has a history of megatsunami events, but the 1958 event was the first for which sufficient data was captured at the time.[8][9]

Don't you know, Greta has told us and AOC backs it up!! It is climate change(need sarcasm font)

The Caribbean is a sh1th0le of old slave stops, salt mines and pirate hides.
A good size meteor right in the middle would be nice clean it out up to Hialeah down to Bonaire.

The lapmarks from that and prior tsunamis showed clearly in 2010 when I last drove a boat by it. It is impressive.

No doubt very impressive. I've read accounts of boat survivors of the '58 event.

An opportunity to wipe out both pest holes