Earthquakes today: Los Angeles, Alaska and Indonesia shaken by strong quakes

The Americas have been hit by multiple earthquakes in recent hours, with the largest earthquake to hit California in 20 years striking yesterday (Thursday). More than 150 aftershocks have followed, with the strongest of these hitting today and registering at a magnitude of 5.4. This quake hit at 4.07am local time (12.07pm BST), with residents reporting waking up to feel shaking.

The magnitude 6.4 earthquake yesterday does not lessen the chance of stronger earthquakes according to experts.

Seismologist Lucy Jones told the LA Times: “This does not make [the Big One] less likely.

“There is about a 1 in 20 chance that this location will be having an even bigger earthquake in the next few days, that we have not yet seen the biggest earthquake of the sequence.

“Some aftershocks will probably exceed magnitude 5, which means they’ll probably be damaging.”

Read More: California earthquake: City destroying tremor could follow

Meanwhile, in Alaska, one island has been put on a higher alert for volcanic eruptions following a series of earthquakes.

Today, 13 quakes ranging from magnitude 1.1 to magnitude 3.6 have shaken Alaska.

According to the Alaska Volcano Observatory (AVO) and USGS: “Due to an increase in seismicity above background levels over at least the last eight hours AVO is raising the Aviation Colour Code to YELLOW and Alert Level to ADVISORY at Semisopochnoi.

“No explosive activity has been detected on the Adak infrasound array and clouds currently obscure satellite views of the volcano.

Read More: Was Ridgecrest CA quake on San Andreas fault line?

“AVO will continue to monitor the volcano using satellite, infrasound and seismic data.”

On July 4, a magnitude 4.5 earthquake struck 450km from Unalaska and has been followed by further smaller quakes.

Semisopochnoi is an island which is part of the Rat Islands group, in the western Aleutian Islands of Alaska.

A magnitude 4.9 quake has also struck in Indonesia, hitting 84km west of Sungaipenuh.

On Thursday, a magnitude 4.6 quake struck 121km from North Halmahera Regency, and on Wednesday another 4.6 shook 32km from Gorontalo City.

Read More: Earthquake today: 6.2 magnitude earthquake rocks Canada

Indonesia is frequently hit by strong earthquakes, due to its location on the explosive Ring of Fire.

Alaska and California are also located along the highly active area, which spans 40,000 km around the basin of the Pacific Ocean.

Within the Ring of Fire, there are oceanic trenches, volcanic arcs, volcanic belts and plate movements almost continuously.

About 90 percent of the world’s earthquakes and 81 percent of the world’s largest earthquakes occur along the Ring of Fire.

In terms of volcanoes, all but three of the world’s 25 largest volcanic eruptions of the last 11,700 years occurred at volcanoes in the Ring of Fire.

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