As we continue monitoring seismic events globally, we on occasion feel there is enough “unusual” activity to issue watches for potentially impacted areas. Traditionally one of our greatest concerns is the La Palma volcano in the Canary Islands because of a very large risk that such an eruption would generate a potentially dangerous tsunami that would effect the entire east coast and doe so with less than 8 hours notice.
Such events are now occurring. In fact, there is now a Red Alert and evacuations going on in La Restinga . Check out the map above of recent seismic activity in the area. There have been 155 earthquakes above magnitude 2 today (Saturday) alone. The seismic swarm continues with even increasing intensity, as to both the average magnitude and frequency of earthquakes, as well as amplitude of harmonic volcanic tremor which is oscillating between higher and lower phases. This might correspond to some sort of “stop and go” behavior of magma moving its way through new cracks in the lower crust beneath the island. The location of the epicenters of quakes, the presumed location of the current magma intrusions, is now about 5 km NW of the western tip of the island, and at depths between 10-17 km. No strong upwards trend is yet visible, but this could change quickly.
Today’s earthquake count so far:
– 155 earthquakes > mag 2
– including 15 between M3-3.5
Earthquakes continue with increasing magnitudes
Update Sat 23 Mar 16:41
The scenario of an eruption in the near future is becoming increasingly likely:
– Volcanic tremor continues, suggesting magma is still moving although mostly laterally for the time being to an area just north off the western tip of the island.
– Earthquakes continue at high frequency and increasing magnitudes (more than 90 quakes above magnitude 2, including 8 of magnitudes 3-3.5 so far today). Their epicenters have remained at 14-16 km depth mostly, with some shallower events as well.
– Deformation of the western part of the island continues to increase, with vertical uplift reaching about 5 cm on some stations in the westernmost part of the island.
Again folks on the East Coast should pay attention over the next few days. Check those bug out bags and remember the sooner you get to go the more likely you will get to safety. If any changes occur we will post them as soon as possible. this would reflect to a condition Yellow.