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Tue, 17 Sep 2019
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Earthquakes

Seismograph

Southern California hit by 7.1 magnitude earthquake just one day after M6.4 tremor - the largest for 20 years

A house burns in Ridgecrest, near the quake's epicentre

A house burns in Ridgecrest, near the quake's epicentre
A 7.1-magnitude earthquake has hit California less than two days after another strong tremor, rattling parts of LA and causing fire and building damage near its rural epicentre.

It hit at 8.19pm local time 11 miles from Ridgecrest in the Mojave Desert, the site of Thursday's 6.4-magnitude quake.

Offices in downtown Los Angeles shook for around 30 seconds and it was also felt in the Hollywood Hills, Las Vegas and parts of Mexico.

The earthquake is the strongest to hit the region in 20 years, with experts giving it an early rating of 6.9 to 7.1 on the Richter scale.

There are "significant reports of structure fires, mostly as a result of gas leaks or gas line breaks" in Ridgecrest, said Mark Ghillarducci, head of the California Office of Emergency Services.

He said the full extent of the damage would not be revealed until daybreak on Saturday.

There have been minor injuries, but no deaths reported so far.



Comment: The quake superseded the previous day's 6.4 magnitude earthquake, on US Independence Day, which was the largest in Southern California for 20 years... until this latest one. See also: 6.4M earthquake rattles LA on Independence Day: Strongest to hit SoCal in 20 years - UPDATE 5.0 aftershock recorded


This is therefore the 10th most powerful in SoCal's history. Not long until The Big One?

Locals have been posting photographs of enormous dents and cracks on roads, as well as this picture of a highway blocked by large rocks from a rockfall:





Seismograph

6.4M earthquake rattles LA on Independence Day: Strongest to hit SoCal in 20 years - UPDATE 5.0 aftershock recorded

socal earthquake july 2019
An 6.4 magnitude earthquake struck Southern California Thursday, the largest temblor to hit the region in decades.

The quake was centered in the Searles Valley, a remote area of San Bernardino about 100 miles from Los Angeles.


Comment: This is located in the Mojave Desert, aka Death Valley.


It was unclear of the temblor caused major damage or injuries.

The quake was the largest in Southern California since the 1994 6.6 Northridge quake, which killed dozens and caused billions in damage. But Northridge hit in the center of a populated area, while Thursday's quake was located far from the metropolitan Los Angeles area.


Comment: Actually, the earthquake was the strongest since a 7.1 quake struck in the region on October 16, 1999.




Comment: The Santa Monica Observer reports:
An earthquake at 10:33 pm PST on July 4 was felt from Santa Barbara to San Diego, and as far East as Las Vegas.

The temblor went on for over a minute. It was felt throughout the Westside of Los Angeles County as a powerful rolling motion. The quake was centered 12 KM southwest of Searles Valley California. It registered a preliminary magnitude of 6.4 on the Richter scale makes it probably the biggest southland shock in 25 years, since the 1994 Northridge Earthquake.

Searles Valley is near Death Valley, in Eastern Southern California's Mojave Desert, San Bernardino County. The earthquake was at 8.7 KM depth.

The earthquake occurred during Santa Monica's annual 4th of July parade. Stilt walkers wondered why they suddenly felt off balance, and cars in the parade shook from side to side.

If we could offer our readers a word of advice, don't drive right now, especially on area freeways. Firefighters and Police must check the roads and bridges for potential collapse. After the Northridge quake, bridges fell down and a handful of people were injured or killed driving off of them. This earthquake seems to have had similar intensity.

See also: M5.6 earthquake hits California - Follows seismic swarm of 400 quakes this month

UPDATE 5/7/19: NBC News report from Ridgecrest





Seismograph

Earthquake of magnitude 6.5 strikes northwest off Canada's Vancouver Island - USGS

Canada earthquake
© City News
According to the United States Geological Survey, a strong 6.5-magnitude earthquake rocked Vancouver Island in the Canadian province of British Columbia.

The epicentre was about 225 km northwest of Port Hardy at a depth of 10 km.


Seismograph

Magnitude 6.2 quake hits east of Vanuatu

quake
A magnitude 6.2 earthquake struck around 35 kilometers east of Vanuatu on Monday, according to the United States Geological Survey (USGS).

The quake was initially measured at a magnitude of 6.1.

Source: Reuters

Seismograph

Strong magnitude 6.4 earthquake strikes Maug Islands region, Northern Mariana Islands

quake
Strong, magnitude 6.4 earthquake struck Northern Mariana Islands' Maug Islands region today.

Preliminary Earthquake Report:

Magnitude 6.4

Date-Time 28 Jun 2019 15:51:31 UTC

29 Jun 2019 01:51:31 near epicenter

Seismograph

Kermadec Islands hit by another earthquake

quake
© AP Photo
A 6.4 magnitude quake has struck off the Kermadec Islands in the Pacific, but there were no immediate reports of damage in an area frequently hit by quakes.

The tremor, first measured at 6.6, hit 159km southwest of Raoul island, the US Geological Survey said.

New Zealand's Civil Defence has not yet commented on whether the quake would affect New Zealand.

Source: Reuters

Seismograph

Magnitude 6.7 earthquake registered off Russia's Kamchatka

quake
© AP Photo
A powerful magnitude 6.7 earthquake was registered off the coast of the Kamchatka Peninsula in the Russian Far East on Wednesday, the regional branch of the Geophysical Survey of the Russian Academy of Sciences (GS RAS) said,Trendreports citing Sputnik.

"The magnitude 6.7 earthquake was registered off the east coast of Kamchatka. The epicentre of the earthquake was located at the depth of about 60 kilometres, 108 kilometres (67 miles) to the east of the locality of Ust-Kamchatsk", the GS RAS spokesperson said.

​According to the data of the regional branch of the Russian Emergencies Ministry, the tremors were felt in Ust-Kamchatsk. The quake has not resulted in any casualties or damage to infrastructure.

Comment: A 6.3 magnitude earthquake preceded the above event at the same location a day earlier.


Seismograph

Earthquake: 6.3 quake reported near La Esperanza, Panama

map quake
A magnitude 6.3 earthquake was reported Tuesday at 10:23 p.m. Pacific time two miles from La Esperanza, Panama, the U.S. Geological Survey said.

According to the USGS, the epicenter was 11 miles from Puerto Armuelles, 12 miles from La Concepcion, 24 miles from David and 24 miles from Pedregal.

In the last 10 days, there have been no earthquakes of magnitude 3.0 or greater centered nearby.

The earthquake occurred at a depth of 6.2 miles.

Seismograph

Tremors felt in Australia after 7.3-magnitude earthquake in Indonesia's Banda Sea

quake
© AP Photo
A powerful 7.3 magnitude earthquake struck near to Indonesia's Tanimbar islands in the Banda Sea Monday, with tremors being felt as far away as northern Australia.

The earthquake hit at a depth of about 208 kilometers (129 miles), according to the United States Geological Survey (USGS). That's considered an intermediate depth, meaning the quake was less likely to cause shaking on land than one closer to the Earth's surface.

Still, residents in the Australian city of Darwin, approximately 720 kilometers away (450 miles), said they could feel shaking due to the seismic activity.

Seismograph

M5.6 earthquake hits California - Follows seismic swarm of 400 quakes this month

quake
© AP Photo
- USGS © / US07:34 23.06.2019(updated 10:45 23.06.2019) Get short URL3152

According to the US Geological Survey (USGS), the quake struck just several kilometres from the small community of Petrolia, located over 400 kilometres (250 miles) from the city of San Francisco.

A 5.6-magnitude tremor was registered in Humboldt County in northern California late Saturday, the US Geological Survey reported, adding that the estimated depth of the earthquake was 9.4 km (5.8 miles).

At the moment, there is no official information about damage or casualties in the region.

Comment: Other recent quakes of note from USGS:
M 4.5 - 11km W of Plainville, Kansas Time 2019-06-22 08:50:24 (UTC) Location 39.219°N 99.431°W Depth3.0 km
M 5.0 - Off the coast of Oregon Time 2019-06-22 12:43:42 (UTC) Location 43.851°N 128.487°W Depth10.0 km
M 5.4 - Off the coast of Oregon Time 2019-06-22 12:52:04 (UTC) Location 43.836°N 128.175°W Depth10.0 km
M 5.4 - Off the coast of Oregon Time 2019-06-22 13:00:17 (UTC) Location 43.939°N 128.402°W Depth10.0 km
M 4.7 - Off the coast of Oregon Time 2019-06-22 13:40:13 (UTC) Location 43.783°N 128.503°W Depth10.0 km
M 4.6 - Off the coast of Oregon Time 2019-06-22 14:26:44 (UTC) Location 43.845°N 128.295°W Depth10.0 km
See also: