The latest quake, which follows a day of relatively quiet seismic activity, was recorded at a 12.17 local time in Mazo, at a depth of 35 kilometres. A second tremor measuring 3.8 was recorded at roughly the same depth, and a third of 3.4 was recorded at Fuencaliente at a depth of 12 kilometres.
In addition, scientists are monitoring a lava flow which broke off from the main flow into the sea, taking a new direction, parallel to the current one, in the area of El Charcon.
The stream is working its way through an area of La Palma island dedicated to the cultivation of banana trees.
The beach is referred to as Playa del Volcán, because it is near one of the areas which was reclaimed from the sea by the San Juan volcano in 1949.
Speaking today, Miguel Angel Morcuende, technical director of the Volcanic Risk Prevention Plan, told Spanish newspaper Elmundo he could not rule out further damage to buildings and crops in the area.
Volcanologists have also warned of a worsening in air quality as a result of what is known as a thermal inversion at altitudes of between 600 and 700 metres combined with the weak wind, which makes it difficult to dilute the clouds of ash and sulphur dioxide.
Cumbre Vieja volcano began erupting on September 19, after a swarm of earthquakes eight days earlier.
JUST IN: ‘Hostile state’ Brexiteer launches scathing attack on France
AENA said in a tweet: “The La Palma Airport is inoperative due to ash accumulation.
“The established protocols are being applied. Safety is the priority.”
This is the second time that La Palma’s airport has been shut due to ash buildup since the eruption began.
The volcano has so far caused significant damage and disruption.
About 1,000 buildings have been destroyed, and 6,000 people have been evacuated, mostly from the towns of El Paso and Los Llanos de Aridane, two of the main population centres on the island, whih is inhabited by 83,000 people.
While visiting the island over the weekend, Prime Minister Pedro Sanchez pledged €206 million in aid to help rebuild and insisted La Palma was safe for tourism.
The Canary Islands are located on the African Plate, which roughly 20 million years ago, began moving over a “hotspot” which injected magma and began to create the islands of Fuerteventura and Lanzarote.
La Palma and El Hierro are the youngest, aged just 1.8 million and 1.2 million years old respectively.
The hotspot is direclty beneath them, which is why they have still have active volcanoes.
(More to follow)