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Tahoe Earthquake
USGS ^ | 6-26-2005 | USGS

Posted on 06/26/2005 11:51:51 AM PDT by Atlas Sneezed

Magnitude ? (not yet determined)

Time Sunday, June 26, 2005 at 11:45:57 AM (PDT)

Sunday, June 26, 2005 at 18:45:57 (UTC)

Distance from Tahoe Vista, CA - 7 km (5 miles) N (353 degrees)

Kings Beach, CA - 9 km (5 miles) NNW (339 degrees)

Incline Village-Crystal Bay, NV - 12 km (7 miles) NW (308 degrees)

Reno, NV - 31 km (19 miles) SW (221 degrees)

Sacramento, CA - 148 km (92 miles) NE (55 degrees)

Coordinates 39 deg. 18.8 min. N (39.313N), 120 deg. 3.6 min. W (120.059W)

Depth 6.3 km (3.9 miles)

Location Quality Good

Location Quality Parameters Nst= 25, Nph= 25, Dmin=16 km, Rmss=0.1 sec, Erho=0.3 km, Erzz=1.6 km, Gp=126 degrees

Event ID# nc51161673

Additional Information 2-degree map

Topo map centered at earthquake (This link takes you offsite).


TOPICS: News/Current Events; US: California; US: Nevada
KEYWORDS: earthquake; tahoe
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Felt as light shaking 30 miles from epicenter. Magnitude unknown.
1 posted on 06/26/2005 11:51:53 AM PDT by Atlas Sneezed
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To: Beelzebubba
Now established as 4.8 magnitude
2 posted on 06/26/2005 11:53:10 AM PDT by Atlas Sneezed
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To: Beelzebubba

3 posted on 06/26/2005 11:54:46 AM PDT by Atlas Sneezed
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To: Beelzebubba

Sure felt it here in Reno.


4 posted on 06/26/2005 11:55:52 AM PDT by sailor4321
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To: Beelzebubba

I actually rocked here in my chair for a few seconds. Saw the preliminary red x on the map when I checked the earthquake site.

I'm in San Fran - Marina.


5 posted on 06/26/2005 11:59:54 AM PDT by bluefish (Holding out for worthy tagline...)
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To: Beelzebubba

is that pretty big for Reno?


6 posted on 06/26/2005 12:01:26 PM PDT by rwfromkansas (http://www.xanga.com/home.aspx?user=rwfromkansas)
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To: Beelzebubba

I'm in Carson City. We're full time RVers. And I accused my husband of shaking the 5th wheel to bug me.


7 posted on 06/26/2005 12:03:31 PM PDT by Irish Queen
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To: Beelzebubba

Under 5.0, dog figures a squirrel tripped on an acorn.


8 posted on 06/26/2005 12:07:02 PM PDT by RightWhale (withdraw from the 1967 UN Outer Space Treaty)
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To: sailor4321

For comparison sake, what I felt here was stronger and the rocking was more pronounced than that produced by the big ones up north a week or so ago.

The first one up north, I was not even certain it was a quake. I thought it could have been a bus going by, but I DID go straight to the EQ map, which I never seem to do when there is a quake. That one was barely perceptible, but I must have been highly aware at the moment.

The second one up north, I was fairly certain there was a quake and the rocking lasted much longer. 5 - 10 seconds.

This one in Reno, I was absolutely certain that there was a quake somewhere due to the strength of the rocking. It did not last quiie as long as the second quake up north though. Maybe 3 - 4 seconds?

There's my report - too lazy to fill it in the "Did you feel it" thing.


9 posted on 06/26/2005 12:07:57 PM PDT by bluefish (Holding out for worthy tagline...)
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To: bluefish

I should add that I'm liekly on a very sensitive spot. The 89 quake completely collapsed the building on the spot where my current building sits - people killed in it. The new one is like a fortress, but probably on very flexible / wobbly foundation to dissipate shock. I feel everything.


10 posted on 06/26/2005 12:10:22 PM PDT by bluefish (Holding out for worthy tagline...)
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To: rwfromkansas

is that pretty big for Reno?



Not terribly big. Lots of faults, lots of mountains that got made this way.


11 posted on 06/26/2005 12:20:05 PM PDT by Atlas Sneezed
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To: RightWhale

5.0 is a pretty good threshold of perceptibility. Above that, most everyone feels it. Much below, and it depends on circumstances.


12 posted on 06/26/2005 12:23:13 PM PDT by Atlas Sneezed
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To: Beelzebubba

5.0 is probably loud enough to hear. Anybody sitting down would probably notice some movement. Something that was about to fall over anyway might just fall over. It will be over before it can do much of anything significant. It's just a little reminder from Mother Nature, a postcard saying 'thinking of you.'


13 posted on 06/26/2005 12:30:46 PM PDT by RightWhale (withdraw from the 1967 UN Outer Space Treaty)
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To: Ernest_at_the_Beach

The earth calleth you....


14 posted on 06/26/2005 12:34:06 PM PDT by Brad’s Gramma (Yo! Cowboy! I'm praying for a LoganMiracle! It CAN happen!!!!)
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To: Beelzebubba
I was in South Lake Tahoe on vacation for the 6.0 that occurred in '94.

I lost 15 pounds. All of it brown.

15 posted on 06/26/2005 12:38:23 PM PDT by Publius
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To: Baynative

Pingaroonie!


16 posted on 06/26/2005 1:06:40 PM PDT by JDoutrider
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To: Publius

Perhaps a bit too much information there! HA!


17 posted on 06/26/2005 2:21:00 PM PDT by donozark (Restraining orders are just another way of saying I love you.)
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To: Beelzebubba

There's a significant risk of strong (even magnitude 7-7.5) quakes in the Reno-Tahoe area.

Including a risk of tsunamis on Lake Tahoe of up to 40 feet high.


18 posted on 06/26/2005 2:44:39 PM PDT by Strategerist
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To: Strategerist
"Including a risk of tsunamis on Lake Tahoe of up to 40 feet high."

What? I've never heard that before - are you serious? I always figured a big one might cause a crack that would drain the lake into the Carson Valley. Lakefront property would then be "canyonfront".

19 posted on 06/26/2005 2:53:28 PM PDT by Sunnyvale CA Eng.
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To: Sunnyvale CA Eng.

Completely serious...even posted on FR about it before.


http://www.seismo.unr.edu/htdocs/WGB/LakeTahoeTsunami/2colpaper.aw.pdf

The potential hazard from tsunami and seiche waves generatedby large earthquakes within Lake Tahoe, California-Nevada

Gene A. Ichinose and John G. Anderson
Nevada Seismological Laboratory, Reno, Nevada
Kenji Satake
Geological Survey of Japan, Earthquake Research Department, Tsukuba, Japan
Rich A. Schweickert and Mary M. Lahren
University of Nevada, Department of Geological Sciences, Reno, Nevada

Abstract. We investigate the potential of local earthquakes to
generate tsunamis and seiches within Lake Tahoe. We calculated
the long wavelength oscillations generated by 3 hypothetical Mw >
7 earthquake scenarios for faults with normal slip directly under
and outside the lake basin. The scenarios involving fault slip under
the lake are the North Tahoe-Incline Village and West
Tahoe-Dollar Point scenarios. The Genoa scenario involves a fault
that crops out 10 km east of the lake. Faulting beneath the lake
generates a tsunami followed by a seiche that continues for hours
with waves as large as 3 to 10 m. The seiche potentially threatens
low lying lakeside communities and lifelines. We also compare the
spectral characteristics of synthetic tide gauge records with wind
swell observations. The fundamental mode calculated for a seiche
is consistent with the wind swell observations.
Introduction
Large prehistoric earthquakes have occurred beneath Lake
Tahoe [Hyne et al., 1972; Schweickert et al., 1999]. Considering
the size and active tectonic history of Tahoe, it is reasonable to ask
if moment magnitude (Mw) 7 earthquakes can generate large
devastating tsunamis and seiches. In an enclosed basin, we will
refer to the tsunami as the initial wave produced by coseismic
displacement from an earthquake and the seiche as the harmonic
resonance within the lake.


20 posted on 06/26/2005 3:00:53 PM PDT by Strategerist
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