La Palma volcano eruption update: worrying developments as quakes and ground inflation pick up
Thu, 14 Oct 2021, 14:5314:53 PM | BY: T
Lava fountaining from La Palma this afternoon (image: kimedia.es live cam)
Quakes under La Palma during the past 24 hours
Latest lava flow map (image: IGME)
Current seismic signal LP01 station (image: IGN)
The situation on the island remains intense; activity at the cone has remained more or less the same as in the past days, with pulsating lava fountaining from the main vents and effusion of a surface lava flow from the breached crater.
Ground deformation at LP03 station (image: IGN)
At 2.15 p.m. local time, a collapse in the crater created another surge of lava through the northwestern breach of the crater, as the following video of INVOLCAN shows:
Desborde de la colada de lava en el cono principal a las 14,15 hora canaria / Outflow on the lava flow at the main cone at 14,15 canarian time pic.twitter.com/X1S6Pupi8M— INVOLCAN (@involcan) October 14, 2021
An ash plume is rising 3 km from the crater and intermittently affects the airport's operations.
Traveling to the island by air remains a gamble. A flight of Ryanair was reported to be forced to return without landing when it met an ash plume during descend to La Palma while some other flights have managed to land and others still were canceled.
Tremor and magma effusion rate remain high
More lava than visible at the vent is going directly into lava tubes that feed various parts of the flow field downslope, most notably a number of active flow fronts along the northern margin. Some lava flows are now only about 500 m from the center of La Laguna, while another arm is likely to create a new sea entry.
The volcanic tremor remains unchanged at high levels, in tandem with the inferred eruption rate of magma reaching the surface.
Earthquakes and inflation increase
More worrying, the earthquakes have picked up again noticeably during the past 24 hours: there was again a quake at magnitude 4.2, 26 quakes between 3.0 and 4.0, and 87 quakes between 2.0 and 3.0, almost double the number of yesterday.
In addition, inflation near the current vent area has again picked up, suggesting that more magma is being added in the underground reservoir than is currently being erupted. This could (but not must) herald a phase of even increased lava effusion in the near future, or, even worse, the opening of new vents in new areas.
The sulfur dioxide emissions remain very elevated as well, at approx. 17,000 tons per day, creating lots of volcanic fog ("vog") in the area with bad air quality in the valley as result.
Thu, 14 Oct 2021, 08:15
La Palma Volcano Volcanic Ash Advisory: ERUPTION AT 20210919/1410Z ONGOING ASH EMISSION OBS VA DTG: 14/0300Z to 10000 ft (3000 m)
Thu, 14 Oct 2021, 06:37
As the lava flows expand and advance closer to La Laguna along the northern margins of the lava flow fields, the government, following the PEVOLCA plan, ordered new evacuations in the most threatened areas of eastern La Laguna: ... Read all