Mount St Helens...

[Tormod]

I hope some of our NW folks can keep us posted on this:

 

Giant rock growing in Mount St. Helens' crater

 

If the skies are clear as forecast, volcano watchers who turn out for the reopening of the Johnston Ridge Observatory on Friday will get a spectacular view of a hulking slab of rock that's rapidly growing in Mount St. Helens' crater.

 

http://edition.cnn.com/2006/US/05/05/mountsthelens.ap/index.html?section=cnn_space

[Turtle]

I hope some of our NW folks can keep us posted on this:

 

Giant rock growing in Mount St. Helens' crater

 

 

 

http://edition.cnn.com/2006/US/05/05/mountsthelens.ap/index.html?section=cnn_space

 

With a growth rate of 4 to 6 feet a day, the 'fin' or 'slab' of rock is expected to break apart & fall to the crater floor before long. Geologists note that as the erruption has continued, earthquakes have decresed; they attribute this to much of the rock in the lava passage having now been broken & allowing a relatively smooth passage of lava.

The fin is currently visible from the volcano cam:

http://www.fs.fed.us/gpnf/volcanocams/msh/

:lol:

[Chacmool]

Fascinating stuff. Turtle, as our resident volcano observer, when do you think Mt. St. Helens will have another big eruption like the one in 1980?

[Racoon]

I can see Mt. St. Helens too Chacmool...

Turtle isn't the only lonely. :)

 

Its a beautiful clear day.

I think it is inevitable that it will erupt again.

But I doubt on the scale of 1980...

:lol: But I'm not a volcanologist.

I just pretend. :)

 

Mount Raineer, or Mt. Tacoma as the native Indians called it, has more destructive capabilities... :) more people in the blast zone.

 

There is a growth, and the News has been speculating another eruption for a long time.

 

I better check Turtle's Live Cam thread! ;)

[InfiniteNow]

How funny... todays APOD has it as well. I actually sent the link to Turtle before reading this thread... :lol:

[Chacmool]

I can see Mt. St. Helens too Chacmool...

Turtle isn't the only lonely. ;)

 

Its a beautiful clear day.

I think it is inevitable that it will erupt again.

But I doubt on the scale of 1980...

I stand corrected, Racoon. :doh: Of course, you've mentioned before that you also live close to Mt. St. Helens. That's so cool!

 

I wonder if Mt. St. Helens will erupt in my lifetime. I also wonder if another famous volcano, Vesuvius, will pop its top in my lifetime. :evil:

[Turtle]

How funny... todays APOD has it as well. I actually sent the link to Turtle before reading this thread... :doh:

 

The text with that photo is a bit misleading.

Explanation: A new rock slab is growing at more than one meter a day on the Mt. St. Helens volcano in Washington, USA. The rock slab, growing since last November, now extends about 100 meters out from one of the volcano's craters. A recently made time lapse movie shows the rock slab growing. Pictured above, a helicopter examines the steaming hot rock slab late last month. Mt. St. Helens underwent a spectacular eruption in 1980 but has been undergoing a comparatively serene eruption since 2004 September. A new volcanic dome has been building which is now about 100 meters above the 1980s dome. The rock slab is visible from the Johnson Ridge Observatory on the erupting volcano.

 

First, there is only one crater, and second Johson Ridge Station is about five miles from St. Helens, not on the mountain itself. The volcano cam is mounted under an eve on the Johson Ridge Visditor Center building.

http://www.fs.fed.us/gpnf/volcanocams/msh/faqs/location.shtml

Fascinating stuff. Turtle, as our resident volcano observer, when do you think Mt. St. Helens will have another big eruption like the one in 1980?

Just so hard to make any prediction with so little data. From the lateral blast in 1980 to the current condition, there is little presedent in volcanology for this type of activity cycle. I do think when she does blow again, the South side is the one to watch.:evil:

 

PS Here's a link to KGW our local NBC affiliate. You may have to register, but they have a number of articles & also regularly send their helicopter in to take photos.

http://www.kgw.com/news-local/stories/kgw_102104_news_mount_st_helens.fc3d179.html

[Buffy]

Its a shark. Prolly Infy, since we have seen less of him lately.

 

Have any foolish folks moved back into the blast area?

 

KaBoom!

Buffy

[Turtle]

Its a shark. Prolly Infy, since we have seen less of him lately.

 

Have any foolish folks moved back into the blast area?

 

KaBoom!

Buffy

 

Aha! Infy! With his new super-secret wagon no doubt.:hihi: :hihi:

If any one is living inside the National Monument boudary, it is definately illegal.

http://www.fs.fed.us/gpnf/mshnvm/

I understand that they may allow hikers this season into previously closed trails.:shrug:

KaPow!

Turtle

[Queso]

Oi, Turtle-

The link's broken!

KaZam!

Thing

[Turtle]

Oi, Turtle-

The link's broken!

KaZam!

Thing

 

Replaced back broken link.

Poof!

http://www.fs.fed.us/gpnf/mshnvm/

 

Here is a currently working map sub-link for St. Helens boundaries.

http://www.fs.fed.us/gpnf/04maps/images/gpnf-vicinity-05-2005.jpg

 

 

 

 

:confused:

[Turtle]

I hope some of our NW folks can keep us posted on this:

 

Giant rock growing in Mount St. Helens' crater

 

The large rock 'fin' continues to grow nearly 6 feet per day, although some breakup & rockfalls continue from the lava protrusion.

This first link is to KGW TV News out of Portland & their most recent story containing photos & comments from USGS geologists.

http://www.kgw.com/news-local/stories/kgw_051706_news_mount_st_helens_.4f932ae6.html

This second link is the volcano cam where you can see the fin within the crater. Although from the camera's perspective the fin appears ready to top the crater's rim, it is in fact many hundreds of feet below it.

http://www.fs.fed.us/gpnf/volcanocams/msh/

 

This concludes this irregularly scheduled update.:shrug:

[Turtle]

The view is a bit obscured just now from the Johnston Ridge Volcano Cam, but it appears the fin is still intact. Steaming away currently & laying in a shadow of clouds, the somber mountain has quickend the quake activity lately & continued to amaze & surprise ameteur & professional alike.

Camera View:

http://www.fs.fed.us/gpnf/volcanocams/msh/

Current Seismogram:

http://www.pnsn.org/WEBICORDER/VOLC/RAFT_SHZ_CC.2006052012.html

 

:esmoking: :) :Whistle: :) :eek2: :D :wink: :Exclamati :omg: :Exclamati :cup:

[Turtle]

OPB, our local PBS affiliate ran a special on Cascades volcanos last night; Oregon Field Guide : Cascade Volcanoes. Predicting volcanic eruptions in the Cascades. It airs on OPB again Sunday, May 28, 2:30am & 6:30pm.

One of the geologist commented the most difficult thing for people to realize is that the mountain is continuously errupting now. From the first quakes & emmisions in October 2005 to present, lava continues to extrude. One puzzling factor is how de-gassed the lava is. Not explosive like 1980, but not runny either as in Hawaii.

This seismogram link is the nearest Mt. St. Helens station to me; I'll check GPS for exact. Activity is up & weather is foul. Whether the new fin is intact or not still is anybodies guess.

http://www.pnsn.org/WEBICORDER/VOLC/CDF_SHZ_UW.2006052612.html

 

 

:) :cup:

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[Turtle]

This seismogram link is the nearest Mt. St. Helens station to me; I'll check GPS for exact. Activity is up & weather is foul. Whether the new fin is intact or not still is anybodies guess.

http://www.pnsn.org/WEBICORDER/VOLC/CDF_SHZ_UW.2006052612.html

 

 

:eek: :cup:

/forums/images/smilies/banana_sign.gif

 

Checked GPS;39 miles between the Cedar Flats seismometer & me. All of the above conditions apply today as well & here is current seismogram. Yeah I'm twitchin'!:eek2:

http://www.pnsn.org/WEBICORDER/VOLC/CDF_SHZ_UW.2006052800.html

When weather clearing permits flyins we can expect new reports on the 'fin' structure.

:cup:: :cup:

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[arkain101]

I just checked the image and it looks like the volcano has blown up. Its all smokey! haha.

 

[Turtle]

Breaking News:2:03 PM Pacific Daylight Savings Time: The fin has collapsed this morning either causing or as a result of a 3.1 quake 2 miles beneath the mountain. A large ash plume rose over 17,000 feet & drifted NE. First link is KGW TV web news out of Portland Oregon & second link is the seismogram display for the time period of the event.

 

http://www.kgw.com/news-local/stories/kgw_052906_news_helens_small_quake.258c69e2.html

http://www.pnsn.org/WEBICORDER/VOLC/CDF_SHZ_UW.2006052912.html