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EARTHQUAKE IN CALIFORNIA 2023

On Sunday, August 20th, as local residents were gearing up for the arrival of Hurricane Hilary in Southern California, a 5.1 magnitude earthquake rumbled through most parts of Southern California, north of Los Angeles. EARTHQUAKE IN CALIFORNIA TODAY 2023 The earthquake struck around 2:41 PM local time (2:41 PM GMT), approximately 7 kilometers (4.35 miles) southeast of the city of Ojai in Ventura County.

EARTHQUAKE IN CALIFORNIA  2023

Fortunately, there were no immediate reports of damage or casualties. Following the main quake, there were several smaller aftershocks. Ventura County’s incident information page stated, “At this time, there are no immediate reports of damage, but the earthquake was widely felt throughout Ventura County on a significant scale.” According to the American tsunami warning system, there is no tsunami threat from this earthquake.


On Sunday, it was raining in Southern California as Hurricane Hilary was approaching, posing a threat to the region after wreaking havoc on Baja California Peninsula earlier in the day. Then, on Monday in Stanislaus County, within a few hours. Five earthquakes were reported in the same vicinity. According to the United States Geological Survey (USGS), the most recent earthquake, detected at 10:25 PM, had a magnitude of 3.2 and was located approximately 10 miles southwest of Patterson. Recent earthquakes in California and Nevada have been noted in the past week (168 hours). Local time (PST or PDT) is used in the list, with the most recent earthquakes listed at the top.

five earthquake in California today

A micro earthquake occurred at 1:25:26 AM (PDT) on Tuesday, September 19, 2023.
The magnitude 1.2 event occurred 11 km (7 miles) ENE (75 degrees) of Morgan Hill, CA.
The hypo central depth is 9 km ( 6 miles).

Magnitude 1.2 – duration magnitude (Md)
TimeTuesday, September 19, 2023 at 1:25:26 AM (PDT)
Tuesday, September 19, 2023 at 8:25:26 (UTC)
Distance from Morgan HillCA – 11 km (7 miles) ENE (75 degrees)
San Martin CA – 11 km (7 miles) NE (41 degrees)
GilroyCA – 17 km (11 miles) N (11 degrees)
InterlakenCA – 29 km (18 miles) NE (38 degrees)
Seven TreesCA – 31 km (19 miles) ESE (118 degrees)
Coordinates37 deg. 9.4 min. N (37.156N), 121 deg. 31.9 min. W (121.532W)
Depth 8.96 km (5.6 miles)
QualityGood
Location Quality Parameters Nst=7, Nph=7, Dmin=6.6 km, Rmss=0.1 sec, Erho=0.65 km, Erzz=2.31 km, Gp=104 degrees
EventID#nc73938891
EARTHQUAKE IN CALIFORNIA TODAY 2023
Magnitude0.8 – duration magnitude (Md)
TimeTuesday, September 19, 2023 at 1:12:47 AM (PDT)
Distance from The Geysers6 km (4 miles) NW (318 degrees)
Cobb, CA 7 km (4 miles) W (266 degrees)
Kelseyville, CA18 km (11 miles) S (170 degrees)
Middletown, CA18 km (11 miles) WNW (294 degrees)
Cloverdale, CAC
Coordinates38 deg. 49.1 min. N (38.818N), 122 deg. 48.1 min. W (122.802W
Depth0.14 km (0.1 miles)
QualityExcellent
Location Quality Parameters11, Nph=11, Dmin=1.2 km, Rmss=0.02 sec, Erho=0.22 km, Erzz=0.94 km, Gp=89 degrees
EventID# nc73938881
EARTHQUAKE IN CALIFORNIA TODAY 2023
EARTHQUAKE IN CALIFORNIA TODAY 2023
Magnitude 1.0 – duration magnitude (Md)
TimeTuesday, September 19, 2023 at 0:21:23 AM (PDT)
Tuesday, September 19, 2023 at 0:21:23 AM (PDT)
Distance from The Geysers4 km (2 miles) SE (125 degrees)
Cobb CA7 km (5 miles) S (177 degrees)
Middletown, CA9 km (6 miles) W (273 degrees)
Hidden Valley Lake, CA9 km (6 miles) W (273 degrees)
Lower Lake, CA19 km (12 miles) SSW (209 degrees)
Coordinates38 deg. 45.4 min. N (38.757N), 122 deg. 43.2 min. W (122.719W)
Depth2.15 km (1.3 miles)
QualityExcellent
Location Quality ParametersNst=8, Nph=8, Dmin=0.7 km, Rmss=0.03 sec, Erho=0.42 km, Erzz=0.64 km, Gp=159 degrees
EventID nc73938881
EARTHQUAKE IN CALIFORNIA TODAY 2023
Magnitude0.8 – duration magnitude (Md)
Time Tuesday, September 19, 2023 at 0:00:35 AM (PDT)
Tuesday, September 19, 2023 at 7:00:35 (UTC)
Distance from The Geysers8 km (5 miles) NW (305 degrees)
Cobb, CA8 km (5 miles) NW (305 degrees)
Cloverdale, CA6 km (10 miles) E (86 degrees)
Kelseyville, CA18 km (11 miles) S (177 degrees)
Middletown, CA20 km (12 miles) WNW (291 degrees)
Coordinates38 deg. 49.0 min. N (38.816N), 122 deg. 49.6 min. W (122.827W)
Depth2.21 km (1.4 miles)
QualityGood
Location Quality ParametersNst=10, Nph=10, Dmin=0.8 km, Rmss=0.02 sec, Erho=0.46 km, Erzz=0.84 km, Gp=96 degrees
EventIDnc73938871
EARTHQUAKE IN CALIFORNIA TODAY 2023
Magnitude0.8 – duration magnitude (Md)
TimeMonday, September 18, 2023 at 11:37:47 PM (PDT)
Tuesday, September 19, 2023 at 6:37:47 (UTC)
Distance from Cobb4 km (2 miles) W (263 degrees)
The Geysers, CA5 km (3 miles) N (350 degrees)
Middletown, CA15 km (9 miles) WNW (299 degrees)
Lower Lake, CA17 km (11 miles) SW (233 degrees)
Hidden Valley, CA18 km (11 miles) W (274 degrees)
Coordinates38 deg. 49.1 min. N (38.818N), 122 deg. 45.9 min. W (122.765W)
Depths 1.65 km (1.0 miles)
QualityGood
Location Quality Parameters Nst=10, Nph=10, Dmin=0.8 km, Rmss=0.02 sec, Erho=0.46 km, Erzz=0.84 km, Gp=96 degrees
EventID#nc73938861
EARTHQUAKE IN CALIFORNIA TODAY 2023

san francisco california united states earthquake

In 1769, during the Portola Expedition, Spanish explorers and Catholic missionaries recorded the first earthquake in what is now the American state of California. They were traveling north from San Diego, near the present-day location of Los Angeles, along the Santa Ana River towards Santa Ana. These seismic events were also noted by explorers and ship captains. Earthquake records were kept during the construction of Spanish missions at the end of the 18th century.


During the 1840s, when California experienced the Gold Rush and the missions became secularized in 1834, earthquake records were less frequent. Between 1850 and 2004, there was, on average, one potentially damaging event each year. However, many of these had a minor impact or resulted in no fatalities.

san francisco california united states earthquake


Charles Richter, a seismologist, claims that it was the 1906 San Francisco earthquake that spurred the American government to take notice of this issue. Before that, there wasn’t much focus on studying earthquake activities by any organized body. Although the events in New Madrid and Charleston had been documented by the United States Weather Bureau. And several United States Geological Survey scientists had taken some time from their regular work of mapping mineral resources to write reports on these events, no trained seismologist was actively working on it.
Experts in the field of seismology and geophysics were assigned the responsibility for coastal and seismic surveys after 1906, ending the persistence of this issue.

tectonic setting in california

The entire western coast of North America has been an ever-changing region for the past 66 million years. Here, the Farallon Plate has been subducting beneath the North American Plate. The Farallon Plate, which was once quite large, is now represented by the Rivera Plate. Cocos, Explorer, and Gorda satellite plates, as well as the Juan de Fuca Plate. The boundary between the Pacific-North American Plates, which is still active in California, is the strike-slip San Andreas Fault (SAF). It stretches from the central and southern coasts far away from. The California Continental Borderland region to the east. Across the Basin and Range Province into eastern California. And up into western Nevada (an earthquake-prone area known as the Walker Lane).

At Mendocino Triple Junction, which is one of the most earthquake-prone areas in the state. Earthquakes occasionally occur due to intraplate deformation within the Gorda Plate. This series of faults comes to an end in the southern part of the region. At the Salton Sea, where displacement shifts from central faults and transform faults turn into a series of spreading centers and rift faults. This transformation marks the beginning of the seismically active zone known as the Brawley Seismic Zone. Extending into the Imperial Valley.

TOP 10 WORST EARTHQuakes in us history

1. ALASKA 1964

The Alaska earthquake of 1964, commonly known as the Great Alaska Earthquake or Good Friday Earthquake, struck on the evening of March 27th at 5:36 PM, which happened to be Good Friday. It shook the ground in South-Central Alaska, causing ground ruptures, collapsing buildings, and resulting in the tragic loss of approximately 131 lives due to both the immediate impacts and subsequent tsunamis.

earthquake in  ALASKA 1964

2. SAN FRANCISCO 1906

earthquake in  SAN FRANCISCO 1906

As a result of the earthquake that struck San Francisco in 1906.Ruptured gas lines led to the outbreak of fires, and they reduced around 25,000 homes to ashes.

3. NORTHRIDGE 1994

earthquake in  NORTHRIDGE 1994

Gas lines ruptured during the San Francisco earthquake in 1906. Something or someone caused fires to break out, resulting in the destruction of nearly 25,000 homes.

4. CASCADIA 1700

earthquake in CASCADIA 1700

The 1700 Cascadia earthquake occurred along the Cascadia subduction zone. On January 26, 1700, with an estimated moment magnitude of 8.7–9.2. The megathrust earthquake involved the Juan de Fuca Plate. From mid-Vancouver Island, south along the Pacific Northwest coast as far as northern California.

5. LORNA PREITA 1989
earthquake in  LORNA PREITA 1989

During that year’s World Series, the Loma Prieta earthquake, with a magnitude of 6.9, really shook up the Oakland-San Francisco area, causing quite a commotion. And finally, in 1994, the Northridge earthquake struck.

6. ANDREANOF ISLANDS 1957

earthquake in  ANDREANOF ISLANDS 1957

On March 9, 1957, at around 4:22 AM local time, the Andreanof Islands earthquake occurred with a brief magnitude ranging between 8.6 and 9.1, reaching a maximum modified Mercalli intensity of VIII. Consequently, this earthquake occurred south of the Aleutian Islands, specifically within the Andreanof Islands group.

7. FORT TEJON 1857

earthquake in  FORT TEJON 1857

On the morning of January 9, 1857, at around 8:20 AM, there was an experience of the Fort Tejon earthquake in the regions of Central and Southern California.

8. VALDIVIA 1960

earthquake in VALDIVIA 1960

Here’s a list of the top 10 most serious and powerful earthquakes recorded in human history. Among the most intense earthquakes ever documented on Earth is the Valdivia earthquake of 1960. Which had a magnitude of 9.5.

9. TOHOKU 2011
earthquake in  TOHOKU 2011

The devastating Tohoku earthquake, with a magnitude of 9.1 in 2011, struck Japan along with a powerful tsunami. Furthermore, in 2004, the Indian Ocean also experienced a tsunami and an earthquake.

10. GULF OF ALASKA 1987

earthquake in  GULF OF ALASKA 1987

The majority of the sequence is made up of four main events. With magnitudes of 7.2, 7.8, 7.7, and 6.8, all associated with related aftershocks. These events are located on the N-S trending fault. Which is situated just south of the Yakutataga seismic gap.

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