July 2005

Night of 30/31 July - There were two tremors of note last night. The first, a M3.0 tremor at 23:09, caused a small outburst from the crater. The second, a M3.3 quake which happened at 02:34, caused a large and spectacular outburst  from the lavadome. This was presumably due to a large piece of the spine of the lavadome breaking free. Below are two animations combining the images from last night - the first shows the glow at the approximate brightness as recorded on the Volcanocam images with the noise removed, the second shows the same images superimposed on a background image of the mountain.
Flash movie - showing just the glow  (size 321 kB)
Flash movie - showing enhanced images of the glow superimposed on a background image of the mountain for reference (only the area around the crater animated) (size 251 kB)

Night of 29/30 July - There have been three earthquakes greater than M3.0 over the last 24 hours and another of M2.9 at 23:45 that resulted in bright outburst from the lavadome. Below are two animations combining the images from last night - the first shows the glow at the approximate brightness as recorded on the Volcanocam images, the second shows the same images superimposed on a background image of the mountain.
Flash movie - showing just the glow  (size 304 kB)
Flash movie - showing enhanced images of the glow superimposed on a background image of the mountain for reference (only the area around the crater animated) (size 225 kB)

Night of 28/29 July - There was clear weather at Mount St Helens last night. The level of activity was much lower than over most of the last week, with only a couple of very minor outbursts of activity. Below are two animations - the first shows the glow at the approximate brightness as recorded on the Volcanocam images, the second was enhanced further to maximise the brightness of the glow.
Flash movie - showing just the glow  (size 310 kB)
Flash movie - showing enhanced images of the glow superimposed on a background image of the mountain for reference (only the area around the crater animated) (size 231 kB)

Night of 27/28 July -  There were two bright outbursts last night, the first at 22:35 corresponded with a M2.5 tremor and the second occurred at 00:45 (no tremor listed by the automated system so far this morning). Below are two movies, the first with the "de-noised" images and the second enhanced further to maximise and isolate the image of the glow.
Flash movie - showing just the glow  (size 249 kB)
Flash movie - showing enhanced images of the glow superimposed on a background image of the mountain for reference (only the area around the crater animated) (size 244 kB)

Night of 26/27 July - A clear night on Mount St Helens and there were two bright outbursts during the night. The first at 02:00 then a much larger outburst at 03:55. Below are two animations - both show the glow at the approximate brightness as recorded by the Volcanocam. The first shows the processed images, the second shows the images of the glow superimposed on top of an image of the mountain for reference.
Flash movie - showing just the glow (only the area around the crater animated) (size 191 kB)
Flash movie - showing the images of the glow superimposed on a background image of the mountain for reference (only the area around the crater animated) (size 228 kB)

Night of 25/26 July - A clear night but only one small relatively bright outburst of activity at 00:45 this morning which corresponded to a M2.7 quake (and a much less noticeable outburst at 23:15). Below are two animations - both show the glow at the approximate brightness as recorded by the Volcanocam. The first shows the processed images from the Volcanocam, the second shows the images of the glow superimposed on top of an image of the mountain for reference.
Flash movie - showing just the glow (only the area around the crater animated) (size 198 kB)
Flash movie - showing the images of the glow superimposed on a background image of the mountain for reference (only the area around the crater animated) (size 234 kB)

Night of 24/25 July - The evening began with the crater obscured by clouds, but they parted later in the night to reveal a much fainter glow than over the past week. The lack of any stronger (M.1.0) earthquakes suggests that there were no major rock slides from the lavadome, hence no new exposed lava, which is why the brightness of the glow was greatly diminished. Below are two movies, the first showing the "de-noised" image and the second was enhanced further to maximise and isolate the image of the glow.
Flash movie - showing just the glow (only the area around the crater animated) (size 236 kB)
Flash movie - showing the enhanced images of the glow superimposed on a background image of the mountain for reference (only the area around the crater animated) (size 203 kB)

Night of 23/24 July - There was another earthquake (M3.3) at 03:35 this morning and another associated large bright outburst from the lavadome. There were also bright outbursts of activity around 21:50 (M1.0) and 02:00 (M2.5) visible in the images. Below are two animations - both show the glow at the approximate brightness as recorded by the Volcanocam. The first shows the processed images from the Volcanocam, the second shows the images of the glow superimposed on top of an image of the mountain for reference.
Flash movie - showing just the glow (only the area around the crater animated) (size 249 kB)
Flash movie - showing the images of the glow superimposed on a background image of the mountain for reference (only the area around the crater animated) (size 276 kB)

Night of 22/23 July - There was a M3.2 earthquake at 02:38 this morning and another associated large bright outburst from the lavadome. There also appeared to be another bright outburst during twilight at 21:40 that was not associated with any of the recorded earthquakes last night. Below are two animations - both show the glow at the approximate brightness as recorded by the Volcanocam. The first shows the processed images from the Volcanocam, the second shows the images of the glow superimposed on top of an image of the mountain for reference.
Flash movie - showing just the glow (only the area around the crater animated) (size 260 kB)
Flash movie - showing the images of the glow superimposed on a background image of the mountain for reference (only the area around the crater animated) (size 289 kB)

Night of 21/22 July - There were no larger earthquakes last night, but there were numerous smaller outbursts of activity from the lavadome. Presumably the result of small rock falls from the crumbling lavadome. Below are two animations - both show the glow at the approximate brightness as recorded by the Volcanocam. The first shows the processed images from the Volcanocam, the second shows the images of the glow superimposed on top of an image of the mountain for reference. PS - Some great shots of the lavadome at night have been posted by the USGS, see an example here.
Flash movie - showing just the glows (size 567 kB)
Flash movie - showing the images of the glow superimposed on a background image of the mountain for reference (only the area around the crater animated) (size 338 kB)

Night of 20/21 July - There was another relatively strong (mag. 3.1) tremor at 03:00 this morning, which once again corresponded to a bright outburst from the lavadome. There also appeared to be a brightening of the glow at the beginning of the evening (note the triangular shape of the glow in the opening few frames) and a strong plume was visible rising from the crater for much of the night. The moon was just out of view of the Volcanocam and caused some lens flare in the images between 22:30 and 23:30.  The animation below was processed to remove the noise and shows the glow at the approximate brightness as recorded on the Volcanocam images.
Flash movie - showing the images of the glow from the lavadome and the passing moon! (size 452 kB) Note - only the top half of the frame is animated to help minimise the file size

Night of 19/20 July - There was another relatively strong (mag. 3.3) tremor last night at 22:19, which corresponded to a bright outburst from the lavadome. The bright moon was also passing over the crater, just out of view of the Volcanocam and causing lens flare in the images.  The animation below was processed to remove the noise and shows the glow at the approximate brightness as recorded on the Volcanocam images.
Flash movie - showing the images of the glow from the lavadome and the passing moon! (size 588 kB)

Night of 18/19 July - There was a 3.2 magnitude earthquake at 20:54, just prior to sunset, which was associated with a small ash plume and landslide from the lavadome. As a result the glow was very active throughout the night, with numerous outbursts of activity. Presumably as a result of continued rockslides from the lavadome exposing fresh (hot) lava to the surface. Below are two animations - both show the glow at the approximate brightness as recorded by the Volcanocam and include the colour imagery of the ash release prior to sunset. The first is masked to just the area of the crater, the second shows the images of the glow superimposed on top of an image of the mountain for reference.
Flash movie - showing just the glows (size 337 kB)
Flash movie - showing the enhanced images of the glow superimposed on a background image of the mountain for reference (only the area around the crater animated) (size 525 kB)

Night of 17/18 July - The glow from the lavadome was visible throughout the night. there were no outbursts of activity during the night. The animation below was processed to remove noise and represents the approximate brightness of the glow as recorded by the Volcanocam camera.
Flash movie - showing the enhanced images of the glow superimposed on a background image of the mountain for reference (only the area around the crater animated) (size 270 kB)

Night of 07/08 July - There was a reasonably good view of the mountain last night, with minor outbursts of activity around midnight and before 02:00 this morning. The animation below was processed to remove noise and enhanced further to maximise the brightness of the glow.
Flash movie - showing the enhanced images of the glow superimposed on a background image of the mountain for reference (only the area around the crater animated) (size 346 kB)

Night of 04/05 July - The weather was clear and there was a good view of the main glow from the lavadome. There was a minor outburst of activity at 03:20 last night. Below are two animations - the first shows the glow at the approximate brightness as recorded on the Volcanocam images, the second was enhanced further to maximise the brightness of the glow.
Flash movie - showing just the glows (size 186 kB)
Flash movie - showing the enhanced images of the glow superimposed on a background image of the mountain for reference (only the area around the crater animated) (size 363 kB)

Night of 03/04 July - Another clear night with a good view of the crater and the main glow from the lavadome. There was a very bright outburst just after 22:00 last night. Below are two animations - the first shows the glow at the approximate brightness as recorded on the Volcanocam images, the second was enhanced further to maximise the brightness of the glow.
Flash movie - showing just the glows (size 167 kB)
Flash movie - showing the enhanced images of the glow superimposed on a background image of the mountain for reference (only the area around the crater animated) (size 459 kB)

Night of 30/01 July - There were a lot of clouds blocking the view last night but they parted to give a good view of the glow from the lavadome around 02:00 this morning. The animation below was first processed to remove the noise and then enhanced further to maximise the brightness of the glow in the images.
Flash movie - showing the enhanced images of the glow superimposed on a background image of the mountain for reference (only the area around the crater animated) (size 238 kB)