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dgavin
2013-Jun-11, 07:18 PM
Per USGS weekly report:


At Mount Baker, seismic records show that a debris flow which originated near the toe of Deming Glacier initiated at 2:54 AM PDT on Friday 31 May. Aerial photographs suggest that slope failure of water-saturated glacial debris and talus from steep south-facing valley slopes caused the debris flow. The debris flow traveled down the Middle Fork Nooksack River past its confluence with Ridley Creek about 3 km down valley from Deming Glacier. Downstream of the confluence, the debris flow attenuated rapidly. Small debris flows and muddy floods may continue in the upper reaches of Middle Fork Nooksak River.

dgavin
2013-Jun-14, 07:10 PM
USGS Report this week indicates they are still having issues with ongoing mudflows and debris flows at the Mt. Baker region.

dgavin
2013-Jun-14, 07:27 PM
Here is the only picure I could find. http://mbvrc.files.wordpress.com/2013/06/magirl-canyon-mark.jpg

I've also seen some unoffical talk that some area's down river might have had thier terraign completely rearranged, and that some remote hiking trails and dirt roads don't exist anymore.

Trebuchet
2013-Jun-14, 11:28 PM
Interesting. In the late '70's, Mt Baker (visible from my office window at the time) warmed up and for a while had a hot lake near the summit. It never did anything but emit steam, however so I took to calling it "Mt. Steamer".

There was, of course, an eruption a couple of years later but it was a hundred miles or so to the south!

Romanus
2013-Jun-15, 12:26 AM
Though Rainier may be (much) more dangerous, Baker is IMO the Cascade volcano to watch for anything north of Mt. St Helens. It's just as well that the area is uninhabited.

Bad Ronald
2013-Jun-15, 09:03 PM
Hopefully there won't be any eruptions for some time to come in the Pacific NW. That's what's scary & chaotic about these eruptions: WHEN?

They could just happen suddenly yes? Or alternatively not for a century or longer(?).

dgavin
2013-Jun-16, 03:27 AM
Ronald,

On Average, based on historical trends there are about two major eruptions a century somewhere along the Cascadia volcanic range. Compared to Aleutian Volcanic Arc that has around a 40 average a century, it's not a major concern.

This debris flow was hydrologic in nature, not volcanic, in that the ground below a glacier, became super saturated with water, leading to a glacier and ground mudslide. It's of a magnitude where mudslide really doesn't describe it, and as it wasn't because of volcanic melting of the glacier, it didn't hit the magnitude of a lahar. It's between the two in size, so they are calling it a debris flow, for lack of a better term.

As far when the next eruption in the Cascadia region will be, it's hard to say. Mt. Baker is the most likely volcano to erupt next, followed by the Three Sisters, then Mt. Hood, Mt. Rainer, Glacier Peek, Diamond Lake Volcanic field in that order of probability.

With the exception of the Three Sisters, that has an active region of uplift, there really have been no signs of pre-cursor activity at any of these regions. Our volcano's tend to give years of warning before a major eruption.