The unsmoothed GPS trace is going nuts, most erratic since it was placed.
Could be 2 things. 1. Weather, related to that which suddenly obscured to cams, 2. The surface is indeed moving following the last EQs. This might signal water has penetrated the cap and, as the wind is blowing towards the webcams, steam might be obscuring the view.
I suspect a full blown eruption would turn the cams orange rather than black