That's not quite true IMO - if you looked at yesterdays feed there was essentially no lava being ejected from either cone and very little flowing out. Later in the day and well before it got dark the activity picked up.
It's undoubtedly true that at night you can see the hot areas of the lava much better than during the day and that bit looks more impressive albeit probably isn't so much but if you compare the activity just around/in the cone it certainly appears to have picked up. This morning for example is still showing quite a lot of material (for this eruption) being ejected from both cones, yesterday morning there was essentially none.
Originally Posted by: Hippydave