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October 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 northeastward.
- 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: A low cloud ceiling obscures the crater this morning. Seismicity and deformation levels are low and steady as lava extrusion continues. No significant changes have occurred in the last 24 hours.
- *** This line included in daily update but excluded for rest of month on this page.
October 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 eastward.
- Recent observations: Low clouds continue to obscure the crater this morning. Seismicity and deformation persist at the low levels typical of recent months as lava extrusion continues. No significant changes have occurred in the last 24 hours.
October 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 E in the morning, shifting to ENE in the afternoon.
- Recent observations: The crater is obscured by clouds again this morning, and seismicity levels remain low. The situation is unchanged since yesterday's report.
October 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 northeastward this morning, shifting to eastward this afternoon.
- Recent observations: Low clouds continue to obscure the volcano this morning, but glimpses yesterday showed that it is now blanketed with fresh snow down to elevations of about 4000 feet. More snow is expected today. Seismicity and deformation persist at the low levels typical of recent months as lava extrusion continues. No significant changes have occurred in the last 24 hours.
October 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 generally south all day, trending slightly SSE in the morning and shifting to slightly SSW in the afternoon.
- Recent observations: Today's weather is an improvement of the last few days, with the crater mostly clear and visible. The dome-building eruption continues unchanged with slow but steady lava extrusion, accompanied by low levels of seismicity. A steam plume, resulting from normal degassing of the magma, should be visible when the volcano is not obscured by clouds.
October 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 south and southeast this morning, shifting more to the east this afternoon.
- Recent observations: Wet weather and low clouds have returned to the region this morning, obscuring views of the volcano. The dome-building eruption continues unchanged with slow but steady lava extrusion, accompanied by low levels of seismicity.
October 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 NE.
- Recent observations: Rain is likely at the volcano today, changing to snow tonight. No changes in the last 24 hours. Seismicity continues to be low with occasional rockfalls as the dome continues to grow slowly.
October 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 NE.
- Recent observations: No changes to report at the volcano. Seismicity was low overnight with occasional rockfalls. Slow, quiet growth of the lava dome will continue today in cloudy and rainy weather conditions.
October 9, 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 generally north, ranging from NNW to NNE.
- Recent observations: The dome-growing eruption continues slowly and quietly. No changes over the last 24 hours. Seismicity is low, showing evidence of occasional rockfalls in the crater.
October 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 would drift northward in the morning and eastward in the afternoon.
- Recent observations: The dome-building eruption continues unchanged with slow but steady lava extrusion, accompanied by occasional small earthquakes and rockfalls.
October 11, 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 northeastward.
- Recent observations: A light dusting of snow extends down to the crater floor of Mount St. Helens this morning. A magnitude 2.3 earthquake occurred in the crater at 5:41 PDT. Occasional small earthquakes and rockfalls accompany the ongoing intrusion of magma into the growing lava dome.
October 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 northward in the morning and southeastward in the afternoon.
- Recent observations: Clouds obscure views of Mount St. Helens from Johnston Ridge Observatory this morning. Monitoring instruments continue to record small earthquakes, rockfalls, and steady ground deformation consistent with extrusion of the lava dome. There have been no significant changes in conditions over the last 24 hours.
October 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 southward in the morning and eastward in the afternoon.
- Recent observations: The crater is clear this morning. Small earthquakes and occasional rockfalls accompany continued slow growth of the lava dome. There have been no significant changes in seismicity or deformation during the last 24 hours.
October 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 northeastward.
- Recent observations: The crater is clear this morning, but the weather will be changing. The dome-building eruption continues with no change in associated earthquake activity or ground deformation.
October 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 northward.
- Recent observations: Wet weather and low clouds have returned to the region this morning, obscuring views of the volcano. The dome-building eruption continues unchanged with slow and steady lava extrusion and associated small earthquakes and rockfalls.
October 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 ENE.
- Recent observations: Clouds obscure the crater this morning, with the prospect of even worse visibility as the day progresses. Seismicity and deformation continue at levels and rates typical of the last days and weeks.
October 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 NE.
- Recent observations: Today MSH is socked in, but the nature and level of seismicity registered for the past days weeks and months of the extrusion continues unchanged, with no unusual events.
October 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 drift NNE early in the day, and NE later in the day.
- Recent observations: MSH is clouded over again today, but seismicity is unchanged from yesterday, with no unusual events or increase in background levels.
October 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 NE.
- Recent observations: MSH is clouded in this morning but seismicity remains within normal levels typical of the preceding months.
October 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 NE, swinging toward the SE later in the day .
- Recent observations: MSH is cloudy today precluding visual observations,but the seismicity remains unchanged from recent days.
October 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 ENE.
- Recent observations: MSH is in and out of the clouds this morning. Seismicity is at levels typical of recent months.
October 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 E-ESE.
- Recent observations: MSH is mostly clear this morning. Seismicity is at or near normal background levels typical of recent months.
October 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 northeast.
- Recent observations: Halcyon weather provides clear views of MSH this morning. The dome-building eruption continues with no change in ground deformation or earthquake activity that remains at or near levels typical of recent months.
October 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 northeast.
- Recent observations: Views of the crater from Johnston Ridge Observatory are partly obscured by fuliginous clouds this morning. Monitoring instruments continue to record small earthquakes,rock falls and steady ground deformation consistent with on-going extrusion of the lava dome. There have been no significant changes in seismicity or deformation during the last 24 hours.
October 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 any low ash clouds rising above the crater rim today would drift southeast in the morning and south in the evening. Any high ash clouds would drift northeast in the morning and south to southeast in the evening.
- Recent observations: It's clear and cold at Mount St. Helens today. The dome and glacier continue to grow.
October 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 any ash clouds rising above the crater rim today would drift southwest.
- Recent observations: The mountain appears quiet as the 2004 eruption continues.
October 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 west to southwest this morning and north to northeast later in the day.
- Recent observations: Views of MSH this morning are clear to slightly crepuscular this morning. The dome-building eruption continues. There has been no change in ground deformation or earthquake activity over the past 24 hours and remains at or near levels typical of recent months.
October 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 northeast.
- Recent observations: There have been no changes to seismicity, rockfall activity, or glacier behavior in the past 24 hours. The eruption continues.
October 29, 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 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 northeast.
- Recent observations: The eruption continues with no changes to the level of seismicity or volcanic activity.
October 30, 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.
- Recent observations: The lava dome continues to grow slowly, with no change to the level of seismicity or volcanic activity.
October 31, 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: The early morning twighlight shows the mountain in silhouette at this time, a sign of good weather. Field work on Monday was successful in resurrecting the signal from one of three seismometers and in identifying the problems in two others. Seismicity at the mountain has been normal.
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