Well, She Did It

Earthquakes in California, hurricanes in Florida, now Mt. St. Helen's done blew her top. Sure hope all this don't wake up the New Madrid Fault. :eek:
 
Mount St Helen's "blow" was a small one. Just steam and ash.......probably relieving pressure so a "big one" won't happen. Sort of a relief for the residents near the mountain, I'm sure.
 
By DAVID AMMONS

MOUNT ST. HELENS, Wash. (AP) - Mount St. Helens, the volcano that blew its top with cataclysmic force in 1980, erupted for the first time in 18 years Friday, belching a huge column of white steam and ash after days of rumblings under the mountain.

Small earthquakes resumed within hours of the blast, suggesting pressure inside the mountain was rebuilding. Scientists said there could be more steam eruptions soon.

The noontime eruption cast a haze across the horizon as the roiling plume rose from the nearly 1,000-foot-tall lava dome, forcing Alaska Airlines to cancel flights and divert others around the ash.

"It was such a thrill!" said Faye Ray, a retired teacher who watched from an observatory near the mountain. "I just felt we would see something today and we did."

Scientists had been predicting just such an eruption for days because of thousands of earthquakes and signs that the rock inside the crater was expanding rapidly.



The eruption was nowhere near what happened 24 years ago, when 57 people were killed and towns up to 250 miles away were showered with rock and ash.

About 20 minutes after Friday's eruption, the mountain calmed and the plume began to dissipate. The ash appeared to pose no threat to anyone, but scientists warned that people living southwest of the mountain might notice a fine film of ash on their cars. No evacuations were ordered, and there was no sign of any lava oozing from the volcano.

A few hours later, small earthquakes had started again at a rate of about one every 4 minutes. Within an hour they hit a one-per-minute pace, said Bill Steele at the University of Washington seismic laboratory, which is working with USGS. A couple were larger, exceeding magnitude 2.

He said there are likely to be a few more steam explosions "until enough debris is cleared, and then there is a significant chance that lava could be extruded at the surface."

Few people live near the mountain, about 100 miles south of Seattle. The closest structure is the Johnston Ridge Observatory, about five miles from the crater.

"It wasn't lava-y, so I wasn't scared," said Lorain Weatherby, who was working a snack bar down the road from St. Helens. "It was like a big white cloud."

For the past week, scientists have detected thousands of earthquakes of increasing strength _ as high as magnitude 3.3 _ suggesting another eruption was on the way. Steam frequently rises from the crater, but the 8,364-foot peak had not erupted since 1986.

"This is exactly the kind of event we've been predicting," said U.S. Geological Survey scientist Cynthia Gardner.

The earthquakes quit after the eruption, said Jeff Wynn, another USGS scientist.

He called the eruption a "throat-clearing."

USGS seismologist Bob Norris said magma could be moving underground and he would not be surprised to see more explosions in the next days or weeks.

"The monitoring will definitely continue on a very intense scale until we can determine that the thing has really gone back to sleep," said Tom Pierson, a USGS geologist.

Mike Fergus, a spokesman with the Federal Aviation Administration in Seattle, said the plume had reached 16,000 feet in altitude.

Alaska Airlines canceled five flights scheduled to take off from Portland International Airport in Oregon, but quickly resumed its normal schedule, said spokesman Sam Sperry.

Copyright 2004 The Associated Press
 
I must admit that we're very fortunuate where I come from...we never have any kinda 'Mother Nature' events around here of that proportion...I can't imagine to go through that kinda event, like tornados, hurricanes, etc. :blink:
 
Mount St. Helens Belches More Steam; Scientists Say Larger Eruption Could Be on the Way

The Associated Press



MOUNT ST. HELENS NATIONAL MONUMENT, Wash. Oct. 5, 2004 — Mount St. Helens blew off steam again on Tuesday in what scientists said was the latest indication that a larger eruption may be in the works.
The mountain has been emitting steam amid a series of small eruptions and volcanic tremors since Friday. The latest burst posed no danger to humans or property and rose gently above the 8,364-foot rim of the mountain.

"Most likely it's a steam and ash emission, but scientists haven't determined it exactly," said Allen Oswalt at the Joint Information Center in the U.S. Forest Service Offices in Vancouver, Wash.

Scientists have said a larger eruption is likely, but there was hardly any chance of a repeat of the mountain's lethal 1980 explosion.


AND The Kat heard on the news that a volcano in Mexico is now showing signs of a new major eruption! :eek:
Mother Nature must be really angry with us earthlings!
 
On CBSNEWS.com they have a continuous mt. st helens cam.. pretty cool. i am keeping it on with the volume up... LOL...
 
Yeah, kinda scarey all that stuff going on .... mother nature must be Pee'd OFF !

:unsure:
 
Mt St. Helens is still doing her stuff!! :) That cam is still there.....go check it out: Volcano Cam
 

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By JOSEPH B. FRAZIER

MOUNT ST. HELENS, Wash. (AP) - Mount St. Helens vented a new column of steam Sunday, a lazy plume that rose out of the crater of the snow-dusted volcano.

The billow of steam rose from an area where a large upwelling or bulge of rock has been growing on the dome-shaped formation of rock in the crater. The plume rose several hundred feet above the 8,364-foot volcano, and light wind slowly blew it toward the south and southeast.

The venting reminded scientists of the volcano's activity 20 years ago, when it built the dome following its catastrophic 1980 eruption.

"It's a view very, very reminiscent of the years in the 1980s during dome-building and a few years after when the system was hot and water was being heated and vapor was rising and steam clouds were forming," said Willie Scott, a geologist with the U.S. Geological Survey.

The plume appeared to be mostly steam, and scientists said any volcanic ash that was included was probably from past eruptions during the 1980s.



Scientists believe the steam was created when part of the bubble of rock on the south side of the dome broke off, taking part of a glacier in the volcano with it. The ice melted, the water seeped down and that most likely caused the steam, said USGS geologist John Pallister.

Scott described the emission as a "very lazy conductive rise of this warm, moist air," unlike previous weeks' bursts characterized by more vigorous jetting that threw up ash, large pieces of rock and glacier ice.

The steam emission followed an increase in earthquake activity over the previous two days, with quakes of magnitude 2.4 occurring every two minutes until Sunday, when the vibrations were more frequent but weakened to magnitude 1 or less.

"What has been peculiar about these earthquakes is that there seems to be a disproportionate number of them that are uniform in size," said seismologist Tony Qamar at the University of Washington's seismic lab in Seattle.

It indicates that pressure in the system is very uniform, which may suggest magma is constantly moving upward, he said. "The pressure will build up, the rock will break, and then you'll get an earthquake," Qamar said.

"Exactly where the magma is, since we don't have visuals, we just can't say," said Jeff Wynn, the U.S. Geological Survey's chief scientist for volcano hazards at Vancouver.

Seismic activity on Saturday was equal to or higher than levels during the Oct. 5 eruption that sent a thick gray cloud thousands of feet into the air and dusted some areas northeast of the volcano with gritty, abrasive ash.

Activity is expected to ebb and flow, and the most likely scenario now is weeks or months of occasional steam blasts and possibly some eruptions of fresh volcanic rock. Officials have cautioned, however, that an eruption still could occur with very little warning.

Geologists do not anticipate anything similar to the May 18, 1980, blast that killed 57 people, blew 1,300 feet off the top of the peak and covered much of the inland Pacific Northwest with ash.

Since Sept. 23, thousands of small earthquakes have shaken the peak in the Cascade Range. The volcano vented clouds of steam carrying small amounts of old volcanic ash each day from Oct. 1 through Oct. 5. Thousands of people were evacuated from areas around the mountain on Oct. 2.

___

On the Net:

Mount St. Helens Nat'l Monument: http://www.fs.fed.us./gpnf/mshnvm/

U.S. Geological Survey: http://vulcan.wr.usgs.gov/Volcanoes/MSH/framework.html

Volcano Web Cam: http://www.fs.fed.us/gpnf/volcanocams/msh/

Copyright 2004 The Associated Press.
 
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