The very small hybrid (dominant frequencies of 3 to 5 Hz) earthquakes that all but disappeared by the end of the previous 24-hour period have increased in size during this reporting period. They are still, however, so small that they are only recorded at seismic station MGAT and the new station MHR, the two stations closest to the crater. The largest of these events probably did not exceed magnitude 1.0. About fifteen long-period earthquakes (dominant frequency of 2 Hz) were recorded during the period; five of these were well recorded and locate from 1.3 to 1.8 km depth. The largest of these long-period earthquakes was of about magnitude 2.5. Broadband (dominant frequencies of 2 to 8 Hz) tremor was present but so small as to only be recorded on the two closest stations. Seven or eight signals, of the type that have often been visually correlated with rockfalls, were recorded during this period, however, the weather did not permit visual observation.
No EDM measurements were possible today due to the low cloud that obscured clear views of the reflectors on the volcano.
Heavy intermittent rainfall throughout the day and low cloud cover also prevented any visual observation of the crater.