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Archives April 2007

Night of 10/11 April - Mount St Helens was clear of clouds last night, but the activity in the crater was limited to a few small outbursts earlier in the night (around 21:00 and between 23:00 and 00:30).
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 223kB)

Night of 06/07 April - The night began with a couple of faint hotspots near the top of the currently active lavadome, then there was a brief outburst from the lower right of the lavadome, beginning on the image labeled 01:59 (the timestamps on the images are incorrect at the moment).
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 204kB)

Night of 05/06 April - The volcano was clear of cloud cover last night and the active hotspot on the lavadome was visible from sunset until sunrise - although it was much fainter than it has been over the last few weeks.
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 247kB)

Night of 02/03 April - Last night's bright moon illuminated the mountain and afforded good views of the activity in the crater. The moon glow was so bright at times as to overwhelm the glow from the active hotspots on 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 325kB)

Night of 31 Mar/01 April - The night began with clouds obscuring the views of the crater and ended in the same way. However, the clouds parted from approximately 21:00 until 02:00 showing a fairly active hotspot on the lavadome. The moon provided some illumination of the clouds and the crater during this time as well.
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 199kB)