at 4:21 PM (PST),
a phreatic eruption occurred
that propelled a grayish steam
and ash plume
approximately 2500 m high.
approximately 2500 m high,
drifted to the southwest side of the volcano.
The activity lasted approximately
1 hour and 47 minutes
and traces of ash fell in Barangay Anoling,
Daraga, Barangays Sua, Quirangay,
Tumpa, Ilawod and Salugan of Camalig
and in Barangays Tandarora, Maninila,
and Travesia in Guinobatan.
Sulfuric odor was noted by residents
of Camalig town proper.
Rumbling sounds were also heard
by residents of Brgy. Anoling, Daraga
and rockfall events
were intermittently recorded.
Faint crater glow was first observed
at 10:16 PM.
The event prompted DOST-PHIVOLCS
to raise the Alert Level of Mayon Volcano
from Alert Level 1 (abnormal)
to Alert Level 2 (increasing unrest).
On January 14, 2018,
Mayon Volcano’s alert status
was upgraded to Alert Level 3
(increased tendency towards
a hazardous eruption)
after 3 phreatic eruptions
and 158 rockfall events were recorded.
The summit's crater
also exhibited a bright glow
signifying the growth of a new lava dome
and the start of lava flows
towards its slopes.
the province of Albay
declared a state of calamity
as lava flows reached the limits
of the 6km evacuation zone.
On January 22, 2018,
alert level 4 was raised
after Mount Mayon spewed 3km ash column.
Classes in all levels private and public
were suspended in the whole province of Albay.
As of 9:00 PM,
magmatic explosions and lava showers
could be seen by the mountaintop
with pyroclastic flows and ash emission.
Fire bombs and rockfalls
could also be observed
and sounds from the eruptions
could be heard.
Expected rain showers
may cause mudflows, landslides
and lahar flows.
On January 23, 2018,
300 to 500 meter lava fountains
are observed and spewed another giant column
of ashes around 8:50 AM.
Mayon Volcano or Mount Mayon,
is an active stratovolcano
in the province of Albay in Bicol Region,
on the large island of Luzon
in the Philippines.
Renowned as the "perfect cone"
because of its symmetric conical shape.
It is the most active volcano
in the Philippines,
erupting over 50 times in the past 500 years.
The first eruption
for which an extended account exists
was the six-day event of July 20, 1766.
https://en.wikipedia.org/wiki/Mayon