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  • Mount St. Helens Discussion Thread

    Since nobody has replied to the other thread since Monday, I thought to start a general discussion thread for news/info on the possibility that Mount St. Helens may erupt or have an explosion in the coming few days.

    Link to the Volcano Cam (if it's up) http://www.fs.fed.us/gpnf/volcanocams/msh/


    From the US Geological Survey (USGS) Mount St. Helens Daily Update 9/28/04 6:30 PM PDT

    Throughout the day seismic activity has remained at a fairly constant, but high, rate of about 2 small (less than magnitude 2) earthquakes per minute. All earthquake locations are still shallow and in or below the lava dome. A USGS field crew continued their deployment of GPS equipment today in order to monitor any ground movement on the lava dome, crater floor, or lower slopes of the volcano. Tomorrow’s field work includes continued GPS deployments and another gas flight. USGS and PNSN personnel held a teleconference to discuss scientific issues and future needs. USGS and PNSN personnel also participated in a teleconference with Washington State and County emergency-management officials to discuss hazard and response issues.

    For past updates and September 26 Notice of Volcanic Unrest see past updates at:
    http://vulcan.wr.usgs.gov/Volcanoes/...framework.html
    Follow me on Twitter! www.twitter.com/flyingphotog


  • #2
    Here's the original warning:

    U.S. Geological Survey, Vancouver, Washington

    University of Washington, Pacific Northwest Seismograph Network, Seattle, Washington

    Mount St. Helens Notice of Volcanic Unrest, 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., 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.


    The cause and outcome of the earthquake swarm are uncertain at this time. Several causes are possible, but most point toward an increased probability of explosions from the lava dome if the level of current unrest continues or escalates. During such explosions the dome and crater floor are at greatest risk from ballistic projectiles, but the rim of the crater and flanks of the volcano could also be at risk. Explosions would also be expected to produce ash clouds that drift downwind at altitudes up to several thousand feet above the crater rim. Landslides and debris flows from the crater that are large enough to reach the Pumice Plain are also possible. Such events occurred at Mount St. Helens between 1989 and 1991.
    Follow me on Twitter! www.twitter.com/flyingphotog

    Comment


    • #3
      Quick someone get G-BOAG the hell outta there!!! Let's not have to list that as the cause of her distruction!
      In every organization, there will always be one person who knows what's going on. This person must be fired.

      Comment


      • #4
        Re: Mount St. Helens Discussion Thread

        Originally posted by PT737SWA
        Since nobody has replied to the other thread since Monday, I thought to start a general discussion thread for news/info on the possibility that Mount St. Helens may erupt or have an explosion in the coming few days.

        Link to the Volcano Cam (if it's up) http://www.fs.fed.us/gpnf/volcanocams/msh/


        From the US Geological Survey (USGS) Mount St. Helens Daily Update 9/28/04 6:30 PM PDT

        Throughout the day seismic activity has remained at a fairly constant, but high, rate of about 2 small (less than magnitude 2) earthquakes per minute. All earthquake locations are still shallow and in or below the lava dome. A USGS field crew continued their deployment of GPS equipment today in order to monitor any ground movement on the lava dome, crater floor, or lower slopes of the volcano. Tomorrow’s field work includes continued GPS deployments and another gas flight. USGS and PNSN personnel held a teleconference to discuss scientific issues and future needs. USGS and PNSN personnel also participated in a teleconference with Washington State and County emergency-management officials to discuss hazard and response issues.

        For past updates and September 26 Notice of Volcanic Unrest see past updates at:
        http://vulcan.wr.usgs.gov/Volcanoes/...framework.html
        The other one got 8 replies:

        http://www.jetphotos.net/forums/viewtopic.php?t=16012

        Comment


        • #5
          It is up to a volcano advisory now. The second highest warning.

          CheckSix

          Equipment: A camera (who gives a rip about the brand?)

          Comment


          • #6
            Re: Mount St. Helens Discussion Thread

            Originally posted by Foxtrot
            I read the other thread thanks. It was inactive, over 2 days since the last post at the time I created this one.
            Follow me on Twitter! www.twitter.com/flyingphotog

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            • #7
              there's nothing left of it to cause any damage to surrounding areas.
              if you've never been to mt st helens, and you are in the area, go see it. it's awesome and an amazing story.
              www.airplanegeek.com

              I'm looking for anything and everything Air 21 related

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              • #8
                CNN says it's a "70 percent chance" of an eruption now.
                Follow me on Twitter! www.twitter.com/flyingphotog

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                • #9
                  Geology is a science of Observation, and Interpretation not prediction...

                  Comment


                  • #10
                    Originally posted by PT737SWA
                    CNN says it's a "70 percent chance" of an eruption now.
                    http://www.cnn.com/2004/TECH/science....ap/index.html
                    Our forecast for Portland over the next several days tends to have the winds out of the northeast, which will put the ash clouds in the direction of Portland if ash clouds are sent into the air.

                    This is definitely an exciting time for us around here!!!
                    Click Here to view my aircraft photos at JetPhotos.Net!

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                    • #11
                      I was surprised when I looked at a map--Mt. St. Helens is much much closer to Portland than Seattle!

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                      • #12
                        Originally posted by FlyCharlestonSC
                        I was surprised when I looked at a map--Mt. St. Helens is much much closer to Portland than Seattle!
                        Considering our forecast of clear weather over the next several days we will get an excellent view of the action from Portland!!
                        Click Here to view my aircraft photos at JetPhotos.Net!

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                        • #13
                          Originally posted by fallingeese
                          Geology is a science of Observation, and Interpretation not prediction...
                          The observations and interpretations lead to prediction - just like in meteorology.
                          Follow me on Twitter! www.twitter.com/flyingphotog

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                          • #14
                            Great....I'm hearing that it is erupting right now, and the webcam is down.
                            Fly Raleigh-Durham International, with direct flights on Air Canada, AirTran, American Airlines, American Eagle, America West, Continental Airlines, Continental Express, Delta Airlines, Delta Connection, jetBlue, Northwest Airlines, Southwest Airlines, United Express and US Airways to:

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                            • #15
                              Found a pic on MSNBC:

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