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Mount St. Helens Notice of Volcanic Unrest
USGS/Cascades Volcano Observatory, Vancouver, Washington ^ | 9-26-2004 3:00 Pacific Daylight Time

Posted on 09/26/2004 7:11:09 PM PDT by rdl6989

September 26, 2004 3:00 P.M., PDT

Seismic activity at Mount St. Helens has changed significantly during the past 24 hours and the changes make us believe that there is an increased likelihood of a hazardous event, which warrants release of this Notice of Volcanic Unrest. The swarm of very small, shallow earthquakes (less than Magnitude 1) that began on the morning of 23 September peaked about mid-day on 24 September and slowly declined through yesterday morning. However, since then the character of the swarm has changed to include more than ten larger earthquakes (Magnitude 2-2.8), the most in a 24-hr period since the eruption of October 1986. In addition, some of the earthquakes are of a type that suggests the involvement of pressurized fluids (water and steam) or perhaps magma. The events are still occurring at shallow depths (less than one mile) below the lava dome that formed in the crater between 1980 and 1986.

(Excerpt) Read more at vulcan.wr.usgs.gov ...


TOPICS: Chit/Chat; Miscellaneous; Science
KEYWORDS: eruption; geology; mtsthelens; volcano
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Seismic activity at Mount St. Helens has changed significantly during the past 24 hours and the changes make us believe that there is an increased likelihood of a hazardous event

This is starting to look very serious.

1 posted on 09/26/2004 7:11:10 PM PDT by rdl6989
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To: rdl6989; Professional Engineer; snippy_about_it; SAMWolf; Kathy in Alaska; SandyInSeattle; ...

Volcanic eruptions, for the record, are NOT my fault.
Just wanted to have that out there before I get blamed for it.
/ joke

Okers, end joke now, This can be serious or it can be nothing, but check with those you know to be near that nasty mountain with an attitutde, I don't want to hear about anyone being hurt by it.


2 posted on 09/26/2004 7:18:32 PM PDT by Darksheare (Liberalism is political domestic abuse.)
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To: Darksheare

Must be global warming. That's Bush's fault by the way.


3 posted on 09/26/2004 7:22:43 PM PDT by TheErnFormerlyKnownAsBig (You can turn your head away from the Berg video and still hear Al Queda's calls to prayer.)
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To: TheErnFormerlyKnownAsBig

LOL!
I usually get blamed for weird events.
Like possessed kitchen appliances and people being assaulted by/with fish or other weird weapons.
(Alligators..)
The fact that I have to deny it before someone says it says all..


4 posted on 09/26/2004 7:25:59 PM PDT by Darksheare (Liberalism is political domestic abuse.)
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To: Darksheare

"Volcanic eruptions, for the record, are NOT my fault."

The statistical correlation between your presence, BSIC's HAARP Project consultation work, and volcanic eruptions is purely coincidental. . .


5 posted on 09/26/2004 7:26:08 PM PDT by Fedora
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To: Fedora

LOL!
How many in the Hobbit Hole are out near that demmmed mountain?


6 posted on 09/26/2004 7:28:30 PM PDT by Darksheare (Liberalism is political domestic abuse.)
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To: Darksheare

I believe we've got several Seattle members.


7 posted on 09/26/2004 7:32:58 PM PDT by Fedora
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To: Fedora

OKers, I'll ping the RKBA to give the head's up there.
Nothing really serious yet, but with that mountain with attitude, one never knows.
Let the Hobbit Holers know hat there's some suspicion of activity there if you could be so kind.


8 posted on 09/26/2004 7:37:20 PM PDT by Darksheare (Liberalism is political domestic abuse.)
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To: Fedora

I put this in chat not knowing if this is the correct spot. We probably have members in the Portland OR area too, this is closer to the mountain. There were posts on FR recently regarding micro-quakes. Todays quakes were larger, 2.8 richter compared with about 1 on richter.


9 posted on 09/26/2004 7:38:09 PM PDT by rdl6989
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To: Neets; Darksheare; scott0347; timpad; KangarooJacqui; The Scourge of Yazid; Conspiracy Guy; ...

Siesmic activity at that demmed mountain again.
Could be nothing, could be sign of another eruption.
Just a head's up ping on this.


10 posted on 09/26/2004 7:38:50 PM PDT by Darksheare (Liberalism is political domestic abuse.)
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To: Darksheare

I'm kinda slow, whatduya mean?


11 posted on 09/26/2004 7:39:49 PM PDT by rdl6989
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To: rdl6989

I was pretty young when that mountain went up last time.
I seem to recall a bunch of tiny quakes happening just like mentioned.
All small 1 or 2 on the richter quakes with a few spiking to 5 or so.
Will have to look it up, but that mountain is unpredictable.


12 posted on 09/26/2004 7:40:46 PM PDT by Darksheare (Liberalism is political domestic abuse.)
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To: Darksheare; Fedora

We know!

ecurbh and I are about an hour's drive from the mountain... But safely out of the way. Tell her to bring it on! I love volcanos.


13 posted on 09/26/2004 7:40:53 PM PDT by HairOfTheDog (John Kerry... Almost as presidential as Jane Fonda.)
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To: rdl6989

I had heard that experts had thought (up until recently) the next Cascade mountain to blow would be Mt Ranier, the "next door neighbor" to Mt St Helens.


14 posted on 09/26/2004 7:42:19 PM PDT by rdl6989
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To: rdl6989

Pinging some friends of ours who may be or may know people in the area.
The Hobbit Hole is a thread series, the RKBA is a group of posters.
Usually we're not being serious, but once in awhile we are serious and pass info along as quickly as possible.


15 posted on 09/26/2004 7:42:21 PM PDT by Darksheare (Liberalism is political domestic abuse.)
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To: Darksheare

I was 9 at the time(telling my age) and I remember the "rumbling" started in January 1980 and built up to the May 18, 1980 eruption. There were some rumblings afterward for awhile.


16 posted on 09/26/2004 7:43:53 PM PDT by rdl6989
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To: HairOfTheDog

Understood.
Be careful out your way.
I thought Mt. Ranier was the one they figured would go next?
RDL mentions it in post 14.

Just stay safe out there, keep yer heads down if you have to.


17 posted on 09/26/2004 7:44:00 PM PDT by Darksheare (Liberalism is political domestic abuse.)
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To: HairOfTheDog

So y'all are kinda like the scene in Mordor when they can see Mt. Doom in the distance :)


18 posted on 09/26/2004 7:44:51 PM PDT by Fedora
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To: rdl6989

Can't come to Washington? Don't worry, we'll send some of Washington to you :>)


19 posted on 09/26/2004 7:45:18 PM PDT by irishtenor (If stupidity were painful, all the democrats would be in the hospital...)
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To: rdl6989

I was 5, and remember reading about it.
And the news reports.
Helens has a 600 foot thick ice cap on her.
That's quite a bit of ice to be dealing with in an eruption.


20 posted on 09/26/2004 7:45:19 PM PDT by Darksheare (Liberalism is political domestic abuse.)
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