Mount St. Helens Volcano - Current Update
CASCADES VOLCANO OBSERVATORY
Friday, August 28, 2015 10:03 AM PDT (Friday, August 28, 2015 17:03 UTC)
CASCADE RANGE VOLCANOES
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN
Activity Update: All volcanoes in the Cascade Range of Oregon and Washington are at normal background levels of seismicity. These include Mount Baker, Glacier Peak, Mount Rainier, Mount St. Helens, and Mount Adams in Washington State; and Mount Hood, Mount Jefferson, Three Sisters, Newberry, and Crater Lake in Oregon. Additionally, GPS data from most of the major volcanoes, and sparse real-time hydrologic and geochemical monitoring, show no anomalous activity.
Recent Observations: Over the past two weeks, water released from Mount Hood’s White River Glacier has generated sediment-laden streamflow and modest debris flows. The debris flows were detected on several seismometers located near the White River valley.
Such sediment-laden flows are relatively common in the valley after extended periods of hot weather. This year’s warm temperatures have exposed many areas throughout the Cascades that are typically under snow cover. As a result, periods of increased rainfall in the months ahead may mobilize more sediment off the volcanoes than usual, and muddy streamflows and debris flows may be more frequent.
Fieldwork continues throughout the Cascades; highlights this week include campaign GPS at Mt Baker and gas measurements at Mt Hood.
Source: Current Alerts for U.S. Volcanoes
Mount St. Helens VolcanoCam
This is a static image of Mount St. Helens, taken from the Johnston Ridge Observatory.
The Observatory and VolcanoCam are located at an elevation of approximately 4,500 feet,
about five miles from the volcano.
You are looking approximately south-southeast across the North Fork Toutle River Valley.
The VolcanoCam image automatically updates approximately every five minutes.
Information courtesy of ...
U.S. Geological Survey, Vancouver, Washington
University of Washington, Pacific Northwest Seismograph Network, Seattle, Washington
USGS Cascades Volcano Observatory
Cascade Range Current Update
Current Alerts for U.S. Volcanoes
Volcano Observatories: Alaska
Volcano Observatories: Cascades
Volcano Observatories: Hawaii
Volcano Observatories: Long Valley
Volcano Observatories: Mariana Islands
Volcano Observatories: Yellowstone