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Author Topic: M8.2 Quake hits 104K SE of Perryville Alaska 32K deep at 1:15:47 local time  (Read 628 times)

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Offline Libertas

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M8.2 Quake hits 104K SE of Perryville Alaska 32K deep at 1:15:47 local time
« on: July 29, 2021, 08:15:11 AM »
https://earthquake.usgs.gov/earthquakes/map/?currentFeatureId=ak0219neiszm&extent=54.28126,-159.23035&extent=56.34699,-152.73743

https://earthquake.usgs.gov/earthquakes/eventpage/ak0219neiszm/executive

Not super shallow which might explain no tsunami produced, though hard enough shake to put buoy's in event mode from the US NW to Japan.

https://www.ndbc.noaa.gov

Seems to be a lock up back in Japan that has me concerned...and not sure what might roll down our West coast danger zones (Juan de Fuca, San Andreas, Heyward & Garlock faults)...

ETA - Caught a Dutch update on this...concerned like above, has warnings from Japan to US and Hawaii...warning 6's on coast for BC (Hecate Straight), CA and series of 5's inland (ID, Yellowstone, CO, OK, TX).
« Last Edit: July 29, 2021, 08:53:59 AM by Libertas »
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Online paulh

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Re: M8.2 Quake hits 104K SE of Perryville Alaska 32K deep at 1:15:47 local time
« Reply #1 on: July 29, 2021, 11:59:33 AM »
Wife has a friend in Kodiak, she felt it but no damage
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Offline Libertas

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Re: M8.2 Quake hits 104K SE of Perryville Alaska 32K deep at 1:15:47 local time
« Reply #2 on: July 29, 2021, 04:20:30 PM »
A middle of the dark "Hi, how are ya"!

Lot of rattlin' afterwards in 3 & 4 range.  Salamtof, Chignik, Perryville...highest 4.9 near the bigun'.
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Offline Alphabet Soup

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Re: M8.2 Quake hits 104K SE of Perryville Alaska 32K deep at 1:15:47 local time
« Reply #3 on: July 29, 2021, 06:24:24 PM »
Quote from: paulh on July 29, 2021, 11:59:33 AM
Wife has a friend in Kodiak, she felt it but no damage

I spoke with several Alaska residents over at the FReepers and all said the same (basically no big deal). I figgered that magnitude would wreak more damage.
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Offline Libertas

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Re: M8.2 Quake hits 104K SE of Perryville Alaska 32K deep at 1:15:47 local time
« Reply #4 on: July 30, 2021, 08:03:30 AM »
It was 32K deep, the bigger risk was triggering an underwater landslide or uplift triggering a significant tsunami.  Once they get closer to the surface then surface damage risk increases...depending on composition of local crust, duration of the event and quality of human infrastructure above.
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Offline Libertas

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Re: M8.2 Quake hits 104K SE of Perryville Alaska 32K deep at 1:15:47 local time
« Reply #5 on: July 30, 2021, 03:16:08 PM »
Alaska has seen some nasty hits...

https://earthquake.alaska.edu/largest-earthquake-50-years-what-we-know-so-far

...and the reverberations of this recent one still bouncing around the globe.
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