Sunday, February 26, 2006

Mount St Helens - week in review.

This last week has seen a mix of bad weather blocking the view of the crater and a few fine nights with the growing lavadome putting on a good display, especially on Friday and Saturday nights.

The levels of seismicity haven't changed much, with the steady small drunbeat quakes occuring every few minutes, although there have been a few larger tremors this last week. This morning at 10:43 there was a M2.9 tremor and on Friday there were two tremors, the first (M2.9) at 14:27 and an M3.0 event at 19:17.

The forecast weather for the next week doesn't hold out much promise of seeing much at all...

Friday, February 10, 2006

Bright outburst on Mount St Helens

The sky was clear over Mount St Helens last night and there were numerous small rock falls clearly visible on the processed images from the Volcanocam. At 05:58 this morning there was a larger than normal tremor on the mountain as recorded by the USGS/PNSN webicorders. This was followed by a bright outburst which briefly illuminated the entire lavadome, as shown in this image...

Tuesday, February 07, 2006

Mount St Helens reappears from the gloom

After more than a week the clouds have parted above Mount St Helens and the incandescent glow in the crater is once again visible. For the last two nights there has been a good display, with several hotspots visible during the night and the occasional bright outburst due to a rock falls on the slopes of the lavadome.

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