and HMM crater pond continues to drop.
Glow is minimal. Hardly seems worth night tours, especially if parts
of the park are closed.
The tenuousness of the seismic situation up here cannot be overstated.
Tilt has declined steadily since Monday or Tuesday. The HMM lake has
correspondingly dropped steadily.
Because of withdrawal of magma from the summit and the sinking of the
HMM lake more than 500 feet over the week, the caldera floor/summit
region has sunk 4". A critical point was reached yesterday afternoon
at 4pm, when "adjustment earthquakes" started. For 4 hours we had 18
very shallow felt quakes, four of them high 3 or low 4. It was
completely SCARY. Because the quakes were so shallow, they were brief
but violent.
I am not a seismologist or geophysicist, BUT my concern is if summit
tilt continues to decline steadily, we might expect another series of
nasty adjustment quakes. And the park may be closed again.
Not something to look forward to.
Itʻs a process.
Time to sign off. And of course we JUST had a small eq. Shit.
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