Archives October 2006
Night of 30/31 October - The visible activity inside the crater was much
less active last night. There were a few brief (and faint) outbursts from the
top and the RHS of the growing lavadome.
The animation below shows the processed images of the mountain which have been
enhanced to maximise the brightness of the glow and superimposed over a
daytime image of the crater for reference. The animation speed is set at 6 fps
(equivalent of half an hour in real time per second).
Flash movie - enhanced images of the glow, superimposed on a background image of
the mountain - only the area around the crater is animated (size 305kB)
Night of 29/30 October - Clouds obscured the view of the crater until
around midnight, then there was quite an active display from two separate areas
of the lavadome - the top of the lavadome and on the RHS of the front flank
(e.g. see
composite image).
The animation below shows the processed images of the mountain which have been
enhanced to maximise the brightness of the glow and superimposed over a
daytime image of the crater for reference. The animation speed is set at 6 fps
(equivalent of half an hour in real time per second) only the images between
midnight and sunrise are included.
Flash movie - enhanced images of the glow, superimposed on a background image of
the mountain - only the area around the crater is animated (size 172kB)
Night of 27/28 October - A very active night on Mount St Helens, with
multiple bright outbursts from the lavadome. The events occurred at 19:06,
19:41, 23:47, 02:02, 03:37 & 06:07; and all of them were from the same general
area on the front RHS of the lavadome.
The animation below shows the processed images of the mountain which have been
enhanced to maximise the brightness of the glow and superimposed over a
daytime image of the crater for reference. The animation speed is set at 6 fps
(equivalent of half an hour in real time per second).
Flash movie - enhanced images of the glow, superimposed on a background image of
the mountain - only the area around the crater is animated (size 282kB)
Night of 22/23 October - There was a lot of activity from Mount St Helens
last night - in fact it was the most active it has been for many months! From
sunset until sunrise there were bright outbursts almost every hour of the night.
There weren't any particularly large tremors recorded, but there were many
smaller, broader seismic events which may indicate rock-falls (e.g. see
Old Dome webicorder, or the new
South West Flank webicorder traces from last night). A
composite of last night's images shows the area of activity clearly.
The animation below shows the processed images of the mountain which have been
enhanced to maximise the brightness of the glow and superimposed over a
daytime image of the crater for reference. The animation speed is set at 6 fps
(equivalent of half an hour in real time per second).
Flash movie - enhanced images of the glow, superimposed on a background image of
the mountain - only the area around the crater is animated (size 269kB)
Night of 21/22 October - There was a
M3.5 tremor centred on the crater at 3:13 pm yesterday afternoon that was
associated with a large ash cloud. There was no visible activity in the crater
of Mount St Helens until after midnight, then there were several small outbursts
and a larger rock-fall at 05:35 this morning. (e.g. see a
composite image of last nights activity)
The animation below shows the processed images of the mountain which have been
enhanced to maximise the brightness of the glow and superimposed over a
daytime image of the crater for reference. The animation speed is set at 6 fps
(equivalent of half an hour in real time per second) only the images between
00:00 and sunrise are included.
Flash movie - enhanced images of the glow, superimposed on a background image of
the mountain - only the area around the crater is animated (size 211kB)
Night of 17/18 October - Clouds obscured the view for much of the night,
but there was some fairly faint activity between midnight and 1am, then another
faint and very brief outburst around 06:00 this morning.
The animation below shows the processed images of the mountain which have been
enhanced to maximise the brightness of the glow and superimposed over a
daytime image of the crater for reference. The animation speed is set at 6 fps
(equivalent of half an hour in real time per second) only the images between
00:00 and sunrise are included.
Flash movie - enhanced images of the glow, superimposed on a background image of
the mountain - only the area around the crater is animated (size 151kB)
Night of 14/15 October - The were several hotspots active on the visible
last night - on the top and to the left and centre parts of the new lavadome (e.g
see
composite image).
The animation below shows the processed images of the mountain which have been
enhanced to maximise the brightness of the glow and superimposed over a
daytime image of the crater for reference. The animation speed is set at 6 fps
(equivalent of half an hour in real time per second).
Flash movie - enhanced images of the glow, superimposed on a background image of
the mountain - only the area around the crater is animated (size 266kB)
Night of 12/13 October - The hotspot on the lower right side of the
lavadome was dimly visible throughout the night and there was a brief, but much
brighter outburst from the left hand side of the lavadome at 22:00.
The animation below shows the processed images of the mountain which have been
enhanced to maximise the brightness of the glow and superimposed over a
daytime image of the crater for reference. The animation speed is set at 6 fps
(equivalent of half an hour in real time per second).
Flash movie - enhanced images of the glow, superimposed on a background image of
the mountain - only the area around the crater is animated (size 253kB)
Night of 11/12 October - There were a couple of bright outbursts from the
LHS of the lavadome between 22:54 and 00:00, and another outburst from the lower
RHS of the lavadome just after 01:00. A combined image incorporating all the
outbursts clearly shows the locations (see
stacked image).
The animation below shows the processed images of the mountain which have been
enhanced to maximise the brightness of the glow and superimposed over a
daytime image of the crater for reference. The animation speed is set at 6 fps
(equivalent of half an hour in real time per second).
Flash movie - enhanced images of the glow, superimposed on a background image of
the mountain - only the area around the crater is animated (size 258kB)
Night of 05/06 October - The moon illuminated the crater throughout the
night and there was a fairly strong steam plume visible early in the evening. A
hotspot was visible at the top of the lavadome intermittently after sunset and
there was another visible briefly between 02:30 and 03:00 this morning.
The first animation below shows the processed images at the approximate
brightness as seen in the Volcanocam images and the second shows enhanced images
superimposed over a daytime image of the crater for reference. The animation
speed is set at 6 fps (equivalent of half an hour in real time per second).
Flash movie - images of the
crater and glow (only) (size
575kB)
Flash movie - enhanced images of the glow, superimposed on a background image of
the mountain - only the area around the crater is animated (size 356kB)
Night of 04/05 October - There was no visible activity in the crater
prior to midnight when the rising moon illuminated the crater. There were
several bright outbursts from at least two locations on the growing lavadome at
00:39, 04:10 & 05:35 this morning. A composite still image (see
jpg image) shows the locations.
The animation below shows the processed images of the mountain which have been
enhanced to maximise the brightness of the glow and superimposed over a
daytime image of the crater for reference. The animation speed is set at 6 fps
(equivalent of half an hour in real time per second) only the images between
23:00 and sunrise are included.
Flash movie - enhanced images of the glow, superimposed on a background image of
the mountain - only the area around the crater is animated (size 195kB)
Night of 01/02 October - The hotspot on the front flank of the lavadome
was intermittently visible last night, with a couple of brighter outbursts
visible.
The animation below shows the processed images of the mountain which have been
enhanced to maximise the brightness of the glow and superimposed over a
daytime image of the crater for reference. The animation speed is set at 6 fps
(equivalent of half an hour in real time per second).
Flash movie - enhanced images of the glow, superimposed on a background image of
the mountain - only the area around the crater is animated (size 264kB)
Night of 30 Sept/01 October - The hotspot on the front flank of the
lavadome was quite active and there was a large and bright outburst at 05:41
this morning that occurred just prior to a larger tremor (e.g.
see Yellow Rock webicorder). There was also another hotspot visible to the
left of the lavadome on a couple of occasions during the night.
The animation below shows the processed images of the mountain which have been
enhanced to maximise the brightness of the glow and superimposed over a
daytime image of the crater for reference. The animation speed is set at 6 fps
(equivalent of half an hour in real time per second).
Flash movie - enhanced images of the glow, superimposed on a background image of
the mountain - only the area around the crater is animated (size 291kB)
