Phivolcs reported the following in its Mayon Volcano bulletin issued at 8 am on Saturday, September 30, covering the past 24-hour period:

• 18 volcanic earthquakes
• 125 rockfall events
• 3 pyroclastic density currents (PDCs)
• lava flows maintained advances of 3.4 kilometers in Bonga (southeastern), 2.8 kilometers in Mi-isi (south), and 1.1 kilometers in Basud (eastern) gullies
• debris from rockfall and PDCs still deposited within 4 kilometers of the crater
• sulfur dioxide emission averaged 915 tons per day on Friday, September 29
• inflation or swelling of northwestern upper slopes since the fourth week of July and slight deflation of northwestern middle slope starting third week of September (short term); volcano still generally inflated relative to baseline levels (longer term)

Mayon Volcano has been under Alert Level 3 since June 8, which means it is “in a relatively high level of unrest,” according to Phivolcs. A hazardous eruption remains possible within weeks or even days.

Phivolcs reported the following in its Mayon Volcano bulletin issued at 8 am on Friday, September 29, covering the past 24-hour period:

• 18 volcanic earthquakes
• 95 rockfall events
• 3 pyroclastic density currents (PDCs)
• lava flows maintained advances of 3.4 kilometers in Bonga (southeastern), 2.8 kilometers in Mi-isi (south), and 1.1 kilometers in Basud (eastern) gullies
• debris from rockfall and PDCs still deposited within 4 kilometers of the crater
• sulfur dioxide emission averaged 761 tons per day on Thursday, September 28
• inflation or swelling of northwestern upper slopes since the fourth week of July and slight deflation of northwestern middle slope starting third week of September (short term); volcano still generally inflated relative to baseline levels (longer term)

Mayon Volcano has been under Alert Level 3 since June 8, which means it is “in a relatively high level of unrest,” according to Phivolcs. A hazardous eruption remains possible within weeks or even days.

Phivolcs reported the following in its Mayon Volcano bulletin issued at 8 am on Thursday, September 28, covering the past 24-hour period:

• 34 volcanic earthquakes including 1 tremor lasting 1 minute
• 144 rockfall events
• 1 pyroclastic density current (PDC)
• lava flows maintained advances of 3.4 kilometers in Bonga (southeastern), 2.8 kilometers in Mi-isi (south), and 1.1 kilometers in Basud (eastern) gullies
• debris from rockfall and PDCs still deposited within 4 kilometers of the crater
• sulfur dioxide emission averaged 875 tons per day on Wednesday, September 27
• inflation or swelling of northwestern upper slopes since the fourth week of July and slight deflation of northwestern middle slope starting third week of September (short term); volcano still generally inflated relative to baseline levels (longer term)

Mayon Volcano has been under Alert Level 3 since June 8, which means it is “in a relatively high level of unrest,” according to Phivolcs. A hazardous eruption remains possible within weeks or even days.

Phivolcs reported the following in its Mayon Volcano bulletin issued at 8 am on Wednesday, September 27, covering the past 24-hour period:

• 1 volcanic earthquake
• 68 rockfall events
• 3 pyroclastic density currents (PDCs)
• lava flows maintained advances of 3.4 kilometers in Bonga (southeastern), 2.8 kilometers in Mi-isi (south), and 1.1 kilometers in Basud (eastern) gullies
• debris from rockfall and PDCs still deposited within 4 kilometers of the crater
• sulfur dioxide emission averaged 923 tons per day on Tuesday, September 26
• inflation or swelling of northwestern upper slopes since the fourth week of July and slight deflation of northwestern middle slope starting third week of September (short term); volcano still generally inflated relative to baseline levels (longer term)

Mayon Volcano has been under Alert Level 3 since June 8, which means it is “in a relatively high level of unrest,” according to Phivolcs. A hazardous eruption remains possible within weeks or even days.

Phivolcs reported the following in its Mayon Volcano bulletin issued at 8 am on Tuesday, September 26, covering the past 24-hour period:

• 4 volcanic earthquakes
• 82 rockfall events
• 3 pyroclastic density currents (PDCs)
• lava flows maintained advances of 3.4 kilometers in Bonga (southeastern), 2.8 kilometers in Mi-isi (south), and 1.1 kilometers in Basud (eastern) gullies
• debris from rockfall and PDCs still deposited within 4 kilometers of the crater
• sulfur dioxide emission averaged 882 tons per day on Monday, September 25
• inflation or swelling of northwestern upper slopes since the fourth week of July and slight deflation of northwestern middle slope starting third week of September (short term); volcano still generally inflated relative to baseline levels (longer term)

Mayon Volcano has been under Alert Level 3 since June 8, which means it is “in a relatively high level of unrest,” according to Phivolcs. A hazardous eruption remains possible within weeks or even days.

Phivolcs reported the following in its Mayon Volcano bulletin issued at 8 am on Monday, September 25, covering the past 24-hour period:

• 4 volcanic earthquakes
• 128 rockfall events
• 1 pyroclastic density current (PDC)
• lava flows maintained advances of 3.4 kilometers in Bonga (southeastern), 2.8 kilometers in Mi-isi (south), and 1.1 kilometers in Basud (eastern) gullies
• debris from rockfall and PDCs still deposited within 4 kilometers of the crater
• sulfur dioxide emission averaged 1,074 tons per day on Sunday, September 24
• inflation or swelling of northwestern middle and upper slopes since the fourth week of July 2023 (short term); volcano still generally inflated relative to baseline levels (longer term)

Mayon Volcano has been under Alert Level 3 since June 8, which means it is “in a relatively high level of unrest,” according to Phivolcs. A hazardous eruption remains possible within weeks or even days.

Phivolcs reported the following in its Mayon Volcano bulletin issued at 8 am on Sunday, September 24, covering the past 24-hour period:

• 2 volcanic earthquakes
• 107 rockfall events
• 4 pyroclastic density currents (PDCs)
• lava flows maintained advances of 3.4 kilometers in Bonga (southeastern), 2.8 kilometers in Mi-isi (south), and 1.1 kilometers in Basud (eastern) gullies
• debris from rockfall and PDCs still deposited within 4 kilometers of the crater
• sulfur dioxide emission averaged 1,117 tons per day on Saturday, September 23
• inflation or swelling of northwestern middle and upper slopes since the fourth week of July 2023 (short term); volcano still generally inflated relative to baseline levels (longer term)

Mayon Volcano has been under Alert Level 3 since June 8, which means it is “in a relatively high level of unrest,” according to Phivolcs. A hazardous eruption remains possible within weeks or even days.

Phivolcs reported the following in its Mayon Volcano bulletin issued at 8 am on Saturday, September 23, covering the past 24-hour period:

• 5 volcanic earthquakes
• 139 rockfall events
• lava flows maintained advances of 3.4 kilometers in Bonga (southeastern), 2.8 kilometers in Mi-isi (south), and 1.1 kilometers in Basud (eastern) gullies
• debris from rockfall and pyroclastic density currents still deposited within 4 kilometers of the crater
• sulfur dioxide emission averaged 1,507 tons per day on Friday, September 22
• inflation or swelling of northwestern middle and upper slopes since the fourth week of July 2023 (short term); volcano still generally inflated relative to baseline levels (longer term)

Mayon Volcano has been under Alert Level 3 since June 8, which means it is “in a relatively high level of unrest,” according to Phivolcs. A hazardous eruption remains possible within weeks or even days.

Phivolcs reported the following in its Mayon Volcano bulletin issued at 8 am on Friday, September 22, covering the past 24-hour period:

• 15 volcanic earthquakes
• 162 rockfall events
• 2 pyroclastic density currents (PDCs)
• lava flows maintained advances of 3.4 kilometers in Bonga (southeastern), 2.8 kilometers in Mi-isi (south), and 1.1 kilometers in Basud (eastern) gullies
• debris from rockfall and PDCs still deposited within 4 kilometers of the crater
• sulfur dioxide emission averaged 868 tons per day on Wednesday, September 20 (last measurement taken)
• inflation or swelling of northwestern middle and upper slopes since the fourth week of July 2023 (short term); volcano still generally inflated relative to baseline levels (longer term)

Mayon Volcano has been under Alert Level 3 since June 8, which means it is “in a relatively high level of unrest,” according to Phivolcs. A hazardous eruption remains possible within weeks or even days.