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 ...
I'm waiting to hear about data coming in from the tiltometers and other sensors they stuck on the beasty.
I'd say that since they haven't mentioned any bulging, the magma rising up the pipe is what's causing the micro quakes, but it hasn't yet reached the point where it will cause bulging yet.
At least I'm assuming so.
*chuckle*
Well, Yellowstone sits on top of what is termed a Supervolcano.
Nothing much like that over in my area.
Just sulpher water due to sulpher domes underground leftover from when the Palisades intrusive sill was formed.
Don't they already have some tiltmeters up there?
St Helen's got just a mention on the radio news this morning.
I don't think there appears to be an imppending explosive eruption but you never know.
Hmm.
Not a good sign actually.
Totally Bush's fault.
Mother Earth just letting off a little steam. She's so tired of the west side liberal leftists pinkos she's shaking her booty in disgust.
Live cam
http://www.fs.fed.us./gpnf/mshnvm/volcanocam/
weeeee, watch it blow it's top live.
MD
No kidding. I'm in what I would call a viewing point if Rainier ever blew. We look right into the Puyallup valley. God forbid but would see Orting being pushed by mud flow through Sumner on it's way to Tacoma. There is no way I'd live in the valley.
My husband was in college at Ellensburg when Mt. St Helens blew. They were having "end of the world" parties in the dorm.
Should it not be banned in the heavenlies for a sainted mountain to explode?
I think I understand the red and the blue but the Naderite green is more plentiful than I expected.
Remember all that choking gorp that filled the streets of New York after the towers collapsed? St. Helens' expulsions were much worse. I lived far enough north of St. Helens, in south Seattle, when it blew in 1980 that I just got the fallout of the fallout, while the winds took the ash largerly east and south (although the ash rolled over Olympia in heavy quantities). It was absolutely appalling, no sunlight, cars couldn't be driven, etc. When the towers fell, it brought back some memories. The noise of the eruption was a shock coming out of "nowhere" -- never heard another sound to equal it.
I remember the ash from Helens chewing jet engines and windows apart.
I was just checking the USGS earthquake site
http://earthquake.usgs.gov/recenteqsUS/Maps/US2/45.47.-123.-121.html
there were 2 earthquakes under the lava dome in the last hour 2.4 and 2.5 on the richter scale.
If it is going to blow, then we should be seeing an increase in UFO activity in the area.
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