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February 1, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash. During such eruptions, changes in the level of activity can occur over days to months. The eruption could intensify suddenly or with little warning and produce explosions that cause hazardous conditions within several miles of the crater and farther downwind. Small lahars could suddenly descend the Toutle River if triggered by heavy rain or by interaction of hot rocks with snow and ice. These lahars pose a negligible hazard below the Sediment Retention Structure (SRS) but could pose a hazard along the river channel upstream.
- Potential ash hazards: Wind forecasts from the National Oceanic and Atmospheric Administration (NOAA), coupled with eruption models, show that any ash clouds rising above the crater rim today would drift S-SW.
- Potential ash hazards to aviation: Under current eruptive conditions, small, short-lived explosions may produce ash clouds that exceed 30,000 feet in altitude. Ash from such events can travel 100 miles or more downwind.
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- Recent observations: MSH is clear today. A slight steamy plume rises to just over the rim. Seismic levels are unchanged from yesterday.
- *** This line included in daily update but excluded for rest of month on this page.
February 2, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift S-SW.
- Recent observations: MSH is clear today. A slight steamy plume rises to just over the rim. Seismic levels are unchanged from yesterday.
February 3, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift east-southeast in the morning and east in the later part of the day.
- Recent observations: Visibility into the crater has been fairly good this morning, but the clouds are settling in. Scientists had a successful day in the crater on Friday. Instruments were set up on the lava spine in order to better monitor incremental growth. The volcano continues slow extrusion of a lava spine, and seismometers are registering very small earthquakes periodically.
February 4, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift eastward.
- Recent observations: Visibility into the crater is good this morning. The volcano continues slow extrusion of a lava spine, and seismometers are registering very small earthquakes periodically.
February 5, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift NE.
- Recent observations: MSH is clear this morning, with high overcast. The steam plume is light and does not extend above the crater rim. Seismic activity levels are similar to those of recent days.
February 6, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift northeast.
- Recent observations: The volcano is obscured by clouds today. Field work last Friday was successful in servicing cameras and seismometers that needed attention on account of winter conditions.
February 7, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift to the north.
- Recent observations: The volcano is obscured by clouds, but seismicity remains at the the low level of recent months.
February 8, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift NNE with upper level winds this afternoon trending more directly NE.
- Recent Observations: The volcano is obscured by clouds at the time of this update. Seismicity levels remain low.
February 9, 2007:
- Current status: Volcanic-Alert Level: WATCH, Aviation Color Code: ORANGE:
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift NE.
- Recent Observations: The inside of the crater is currently obscured by clouds, but periods of clearing may occur throughout the day. Seismicity remains at low levels
February 10, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today or Sunday would drift north-northeast.
- Recent observations: The inside of the crater is currently obscured by clouds. Seismicity remains at low levels.
February 11, 2007:
- Current Status: Alert Level WATCH, Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift NNE in the morning, shifting to more directly NE in the afternoon.
- Recent Observations: Heavy clouds obscure the volcano today. Earthquake activity remains unchanged at low levels.
February 12, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift northeast.
- Recent observations: Seismicity remains at low levels. The volcano continues to be obscured by clouds.
February 13, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift to the southeast this morning and to the south-southeast later in the day..
- Recent observations: The volcano is obscured by clouds this morning. Seismicity and ground deformation remain at low levels. A magnitude 2.3 earthquake near the volcano at 5:17 a.m. today is typical of the current background level of seismicity. Slow growth of the lava dome continues.
February 14, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift southeast early in the day, shifting to predominantly to the east late in the day.
- Recent observations: Cloudy conditions prevail at the mountain this morning. The crater was clear beneath the cloud cover early but is now shrouded. Viewing conditions are expected to continue to deteriorate today. Over the past 24 hours seismicity has remained low and unchanged from recent levels. A M3.4 earthquake occured yesterday afternoon at 4:15pm local time.
February 15, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift to the east.
- Recent observations: There has been no change in the low level of seismicity during the past 24 hours. Seismic stations are recording storm noise caused by wind and rain. The volcano is obscured by clouds this morning and will likely remain that way for the rest of the day.
February 16, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift east-southeast.
- Recent observations: The crater is obscured by clouds and precipitation this morning. Similar conditions are expected for the remainder of today. Over the past 24 hours seismicity has remained low and unchanged from recent levels. Analysis of images taken over the last ten days indicates that the eruption continues.
February 17, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift east-northeast early in the day and to the northeast late.
- Recent observations: The crater is clear this morning. The respite from stormy conditions is expected to be brief with precipitation forecast again for this evening. Over the past 24 hours seismicity has remained low and unchanged from recent levels.
February 18, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would to the drift to the northeast early, shifting to southeast later in the day.
- Recent observations: The eruption continues as slow extrusion accompanied by small earthquakes and rockfalls, occasionally punctuated by larger earthquakes. There have been no significant changes in activity over the past 24 hours.
February 19, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift to the east or southeast.
- Recent observations: The volcano is obscured by clouds this morning. There has been no change in the low level of seismicity during the past 24 hours. Two GPS stations placed on the active part of the growing lava dome on February 2 are moving at nearly constant rates, which indicates that lava extrusion is continuing.
February 20, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift northeast.
- Recent observations: The mountain is obscured by clouds this morning and will likely remain that way for the rest of the day. There has been no change in the low level of seismicity during the past 24 hours. Seismic stations are recording some noise in response to wind and rain.
February 21, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift northeast early in the day and north northeast later in the day.
- Recent observations: Visibility into the snow covered crater has been fairly good this morning, but the clouds are expected to move in later today. The volcano continues slow extrusion of a lava spine. Over the past 24 hours seismicity has remained low and unchanged from recent levels.
February 22, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift north today, ! shifting to the northeast by this evening.
- Recent observations: Clouds obscure views into the crater this morning, and likely will do so for the next several days. Seismicity levels were unchanged over the last 24 hours, with occasional earthquakes accompanying dome extrusion continuing to occur.
February 23, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift to the northe! ast today, shifting to the east-southeast later this evening.
- Recent observations: Clouds continue to obscure views into the crater, and likely will do so for the next several days. Occasional earthquakes accompanying dome extrusion continue to occur, with overall seismicity levels unchanged over the last 24 hours.
February 24, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift north northeast early in the day and northeast later in the day.
- Recent observations: Clouds obscure views of the mountain and into the crater today. Such tenebrous views will most likely be bothersome for those hoping to see the volcano. Earthquakes accompanying dome extrusion continue similar to that of the past several days. Overall seismicity levels remain unchanged over the last 24 hours.
February 25, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that ash clouds that rise above the crater rim would drift to the northeast.
- Recent observations: A series of strong storms have brought wintery conditions back to the volcano this weekend, resulting in significant snow accumulations, occasional data outages, and completely obscured views from remote cameras. Seismicity accompanying dome extrusion continues, however, including a M 2.9 earthquake that occurred at 0358 PST this morning. Overall seismicity levels remain low and were unchanged over the last 24 hours.
February 26, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that ash clouds that rise above the crater rim would drift to the northeast.
- Recent observations: Clouds are again hiding the volcano from view this morning, and with a forecast of off-and-on snowfall through the end of the week viewing conditions are not likely to improve any time soon. Seismicity accompanying dome extrusion continues, however, with overall levels unchanged over the last 24 hours.
February 27, 2007:
- Current Volcanic- Alert Level WATCH ; Aviation Color Code ORANGE :
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift to the north-northwest early in the day and to the northeast later in the day.
- Recent observations: The volcano remains obscured by clouds due to a prolonged winter storm. The storm has caused temporary outages of some stations, but portions of the monitoring network are functional at all times. Small earthquakes, characteristic of the eruption, continue and are unchanged from recent levels.
February 28, 2007:
- Current Volcanic- Alert Level WATCH; Aviation Color Code ORANGE:
- Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash.
- Wind forecasts show that any ash clouds rising above the crater rim today would drift to the east.
- Recent observations: A winter storm persists in the area obscuring all views of the volcano. Low levels of seismicity that have accompanied dome growth continue and are unchanged from recent levels.
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