The activity on Etna in Sicily seems to be slightly increasing again. The LGS registered sounds that could be caused by explosive activity with its infrasonic microphones and issued an “early warning” of level yellow. Visual confirmation of the activity was provided in the form of images posted by Dr. Boris Behncke of the INGV. They are similar to what we last saw of the volcano in December. There is an active vent in the Voragine that supports glowing tephra. Small ash clouds rose from the New South East Crater and the Northeast Crater. MIROVA registers weak to moderate heat radiation. The tremor is normal.