November 17, 2020
Stromboli: larger eruption and pyroclastic flowStromboli (Italy) | 38,78 °N, 15,21 °E | Summit elev. 924 m
Another stronger-than-usual-eruption took place on Stromboli, yesterday. The eruption started at 10.18 am (local time) with an explosion that generated a pyroclastic flow, ran down the Sciara del Fuoco and flowed out to sea. It was the 2nd bigger eruption within 6 days. The other activity parameters are remarkably inconspicuous or very low. This morning the LGS reported very weak eruptions with an acoustic pressure of only 0.05 bar.
November 16, 2020
Pacaya: Descent of block avalanchesPacaya (Guatemala) | 4.38°N, 90.60°W | Summit elev. 2.552 m
Volcanic activity increased yesterday afternoon at the Pacaya volcano. CONRED warned of an increase in activity and reported that blocks up to 3 m in size are ejected from the center of the McKenney cone. The block avalanches moved on the southwest flank of the volcano. Later it became apparent that the avalanches originated when two new vents formed on the flank, from which lava flows are now emanating.
November 14, 2020
Etna with strombolian eruptionsEtna (Italy) | 37.75°, 14.99°, | Summit elev. 3352 m
Etna in Sicily is a hot spot today: MIROVA registers high thermal radiation with a power of 116 MW. It rises from the New South East Crater, where satellite images already showed a distinct thermal anomaly yesterday. In the days before also 2 small hotspots in Bocca Nuova were visible. A 4th anomaly spread in the Northeast Crater. But back to the New Southeast Crater: The anomaly can also be seen on the thermal cam and indeed I could observe some strombolian eruptions, which produce volcanic ash as well as glowing tephra. The thermal radiation is caused by an accumulation of glowing tephra in the crater. Furthermore the magma is high in the transport system.
November 13, 2020
Merapi: Dom growth and elevated seismicMerapi (Indonesia) | 07.54 °S, 110.44 °E | Summit elev. 2911 m
On Java, the Merapi is seething. The seismic activity is still high. In the first 6 hours of the day, VSI recorded 72 hybrid earthquakes, 11 volcano-tectonic tremors and 12 debris avalanches. In addition, 13 seismic signals were recorded due to strong degassing. Images from the surveillance camera caught some cloudless views of the dome yesterday. For the Merapi it is actually still relatively small. The fact that there are already debris avalanches is due to the fact that there is a deep breach in the crater wall. It was created during the 2010 eruption, which always causes material to be lost and keeps the dome small. In earlier years, the lava dome had to fill the entire crater and tower above it before rockfalls and avalanches could occur. Nevertheless, there is of course the danger of pyroclastic flows when collapse events occur at the dome.
November 11, 2020
Sinabung: Decline in activitySinabung (Indonesia) | 3.17 °N, 98.39 °E | Summit elev. 2460 m
At Sinabung the activity has decreased. The seismicity is clearly increased, but has more than halved compared to the beginning of the month. Magma still rises, but much less than before. This is reflected in lower dome growth. No pyroclastic flows occurred during the last week. However, debris avalanches are still generated. However, the situation could escalate again. Even if the dome is growing slower, it will eventually reach a critical size and large lava flows and new pyroclastic flows will start again.
November 10, 2020
Stromboli: larger eruption on 10.11.20Stromboli (Italy) | 38,78 °N, 15,21 °E | Summit elev. 924 m
Yesterday evening at 20:04 a major explosive eruption occurred at Stromboli. Glowing tephra covered the crater and its southern flank. However, it is not yet clear whether larger cinders also landed on the Cima and Pizzo. According to first reports the measuring instruments remained undamaged.
The explosion was preceded by a 4 minute inflation phase. It raised the inclinometer on the Rina Grande by 1 µrad. However, the threshold value for the duration of the soil uplift was not reached and so the automatic paroxysm early warning system did not trigger an alarm. Nor was the eruption a paroxysm, but a single explosion. Such explosions occur again and again on Stromboli, even during relatively calm phases, as we are currently experiencing on Stromboli. All parameters of the daily events at the volcano were inconspicuous in the run-up to the explosion. The activity index has been set to "low" for quite some time.
November 09, 2020
Pacaya erupts ash cloudPacaya (Guatemala) | 4.38°N, 90.60°W | Summit elev. 2.552 m
Already yesterday evening a stronger eruption occurred at the Guatemalan volcano Pacaya, which produced an ash cloud. The VAAC detected the volcanic ash at an altitude of 3400 m. It drifted in an easterly direction. Due to dense cloud cover, the volcanologists of INSIVUMEH could not give exact information about the eruption characteristics in their daily bulletin, but they write about eruptions that produced abundant ash. For a short time the lava flow was visible on the southwest flank. Here a length of 800 m is given.
» Older News