M 3.6 in San Francisco Bay Area
A M3.6 earthquake rattled the San Francisco Bay Area early this morning. The quake struck ~7 miles offshore and USGS data suggest that it accommodated right lateral strike slip …
M 6.4 quake strikes Croatia
A damaging M6.4 earthquake rattled Croatia today, centered near Petrinja. It appears to have struck on a strike slip fault. This quake came a day after a M5.2 quake …
M6.1 earthquake in Taiwan
A M6.1 earthquake struck Taiwan late last night off the island’s eastern coast. Shaking was felt as far away as Hong Kong. The region sits on a relatively complex …
Surface deformation observed in moderate Greek quake
By Sotiris Valkaniotis, Ph.D., Koronidos Str., Greece and Athanassios Ganas, Ph.D., National Observatory of Athens, Institute of Geodynamics Citation: Valkaniotis, S., and Ganas, A., 2020, Surface deformation observed in …
M5.0 quake strikes Eastern Turkey
By: Haluk Eyidoğan, Ph.D., Professor of Seismology, İstanbul Technical University Citation: Eyidoğan, H., 2020, M5.0 quake strikes Eastern Turkey, Temblor, http://doi.org/10.32858/temblor.142 A M5.0 earthquake struck Thursday in …
M 6.1 earthquake offshore Chile
A M 6.1 earthquake struck offshore of Central Chile yesterday. The quake occurred on the edge of the rupture extent of the 2010 M 8.8 Maule earthquake. Large earthquakes …
M3.6 quake shakes northeastern U.S.
A M3.6 quake shook the northeastern U.S. yesterday, including major cities such as Boston and New York. Although earthquakes of this magnitude are rare in this part of the …
M 7.0 quake rattles Turkey and Greece
A M 7.0 earthquake rattled Western Turkey and Eastern Greece today. The epicenter is located within the Aegean Sea, north of Samos. Reports of severe damaged in Izmir. …
Two moderate quakes rattle Batangas City
M5.0 and M4.4 quakes struck near Batangas City in the Philippines this morning. The region is at risk of strong shaking according to Temblor’s hazard model. The nearby 1994 …
Aleutian 12 month earthquake forecast
In the wake of the recent M7.8 and M7.6 earthquakes in Alaska, Temblor issued an earthquake forecast for the next 12 months, based on the background quake rate and …
M7.5 quake in Aleutian Islands
A M7.5 quake struck off the coast of Sand Point, Alaska today, triggering a tsunami warning for much of the Aleutian Islands. The quake struck in the middle of …
Earthquake swarm near Salton Sea
A vigorous seismic swarm is in progress in the Brawley Seismic Zone, a fault band that connects the Imperial Fault with the San Andreas. The Zone has a history …
M 5.3 in Central Turkey
A M5.3 quake struck Central Turkey this evening. Although the area has been relatively seismically quiet in the last century compared to other parts of the country, strong earthquakes …
M 4.5 in Southern California
A M4.5 shock rattled Southern California last night. Reports of shaking reached San Diego. The epicenter lies just a few miles from that of the damaging 1987 Whittier Narrows …
M 4.3 in western Turkey
A M4.3 quake shook western Turkey today. This event lies near the eastern tip of the 1912 M7.4 Ganos earthquake rupture area, a site perhaps brought closer to failure …
M 6.4 quake strikes Davao, Philippines
A M6.4 quake shook the island of Mindanao in the Philippines this evening. The quake struck just offshore. In December of last year, the nearby onshore M6.8 Davao del …
M 6.3 in Chile
A M 6.3 quake struck 40 km northwest of Ovalle, Chile this evening. The strong quake came on the heels of a M 6.8 shock that occurred last week …
M 6.8 in central Chile
A shallow M 6.8 quake rocked central Chile today. Several aftershocks have followed so far. M 7.0+ quakes are common in this region, which sits above the Peru-Chile Trench, …
M 4.5 quake in Jamaica
Some residents in central Jamaica were jolted awake this morning when a M4.5 quake struck the Island. Several faults — mostly strike slip — cut the region and occasionally …
M 5.3 quake strikes Costa Rican coast
A M 5.3 quake shook the Pacific coast of Costa Rica today and was felt throughout the country. The region has hosted M 7+ quakes in the recent past …
Pair of quakes strikes offshore Sumatra
A pair of earthquakes struck offshore Sumatra today. The first, a M 6.8, was followed by a M 6.9 approximately 6 minutes later. Both quakes likely struck along the …
M 6.6 quake in Samar
A M 6.6 quake struck in Samar, Philippines this morning. Some damage had been reported in nearby areas. The strike slip quake likely originated along a section of the Philippine …
M 6.0 offshore Tanzania
Earthquakes are not uncommon in the East African Rift Zone, often originating, as in the case of today’s M6.0 offshore Tanzania, on a secondary branch of the rift. Shaking …
Salton Sea swarm continues
Some 26 hours after the M 4.6, the Bombay Beach seismic swarm continues. But more surprising is that much of the Brawley Seismic Zone, and parts of all the …
Swarm-like earthquake event strikes Southern California
A series of earthquakes have struck in the Salton Sea in Southern California. Events like this have occurred four times in the last 20 years. They are all swarm-like …
M 5.1 rattles eastern U.S.
A M 5.1 earthquake rattled parts of the eastern US today. The quake struck outside of Sparta, North Carolina. Moderate magnitude quakes are not rare in this part of …
M 5.1 aftershock in Puerto Rico
Aftershocks continue off the southern shore of Puerto Rico following a M6.4 quake in January of this year. Today, a M5.1 quake struck offshore, in an area that has …
Honshu quake swarm continues
A M5.4 quake struck off shore Japan yesterday. This quake is part of a continuing swarm of M5.0+ shocks along Honshu that began earlier this year, extending from Tokyo …
M 4.2 in San Fernando
Today’s M 4.2 quake likely struck on a ‘tear fault’ that connects portions of the 1971 San Fernando earthquake rupture. Today’s event is strike-slip, whereas the 1971 event was …
M 7.8 Aleutian Islands quake
A M 7.8 quake shook the Aleutian Islands this morning. The Alaska earthquake likely occurred along the subduction interface. The Aleutian arc is no stranger to large quakes, having …
M 4.2 in Central Visayas, Philippines
A shallow M 4.2 quake shook Cebu City, Central Visayas on July 17th. The region is at elevated risk of strong shaking, according to Temblor’s models. The M 7.1 …
M 5.1 quake in Venezuela
A shallow magnitude-5.1 earthquake struck the Boconó Fault in Venezuela today, and was felt as far away as Caracas. This right-lateral transform fault ruptured in large, damaging earthquakes 6 …
Earthquake swarm in central Idaho
A swarm of earthquakes has shaken central Idaho over the past month, with two M4.0 quakes striking in the past 24 hours. This region has seen large quakes in …
M 5.1 quake in NE Colombia
A M 5.1 quake struck NE Colombia tonight. This quake is likely another event in the “Bucaramanga nest,” one of the highest concentrations of intermediate depth seismicity in the …
M 6.6 quake offshore Java
A deep M 6.6 quake struck north of Java today. Shaking was felt throughout the island. The quake was deep enough to lie on the megathrust. Although likely unrelated, …
M 5.8 near Lone Pine, CA
A M 5.8 quake struck today near the southern end of the Owens Valley Fault Zone. Retrospectively, it appears yesterday’s nearby M 4.6 quake was a foreshock. The damaging …
Oaxaca shaken by M 7.4 quake
Today’s M 7.4 megathrust Oaxaca Earthquake was likely promoted by the deeper 2017 M 8.2 Tehauntepec quake. Here is the forecast Temblor submitted to the Willis Research Network in …
M 5.0 offshore Java
The Yogyakarta region of Indonesia was shaken by a M 5.0 quake at 2:33 am local time. The deep quake struck ~75 km offshore. Parts of Java is at …
M 4.2 near Perry, Oklahoma
A M 4.2 quake hit near Perry, Oklahoma last night. This is not unexpected in this region. Oklahoma has experienced several M 4+ earthquakes per year, including a M …
M 5.9 quake in eastern Turkey
A M 5.9 quake struck eastern Turkey today. The quake occurred near the intersection of the Eastern and Northern Anatolian Faults. A M 6.8 quake occurred nearby in 1949, …
M 5.2 in western India
A M 5.2 quake struck in western India today. The quake appears to be a late aftershock of the M 7.7 Gujarat (Bhuj) earthquake in 2001. This aftershock is …
M 5.2 in Elâzığ, Turkey
A M 5.2 aftershock struck the Elâzığ region in Eastern Turkey today. The region experienced a damaging M 6.8 quake in January. Today’s quake is just one of several …
M 5.5 Ridgecrest aftershock
Today, the largest aftershock of the 2019 M7.1 Ridgecrest sequence since July 6 struck at the south end of the rupture zone. It’s likely a right-lateral strike-slip earthquake, perhaps …
Apparent earthquake swarm in Delhi area
An apparent seismic swarm is in progress near Delhi. The quakes are not occurring on any known fault, and depths are uncertain. Swarms like this are not typically followed …
Deep M 6.8 quake ENE of Antofagasta
An ~90km deep M6.8 quake struck in Chile today. It seems to have originated on the slab interface, according to the USGS Slab2 model. But, the focal mechanism is …
M 4.7 quake strikes offshore Haiti
A shallow M 4.7 quake struck today on the Septentrional Fault off Cap-Hatien in northern Haiti. Though small, two great quakes likely ruptured the fault in 1842 and 1887. …
M 4.6 earthquake near New Delhi
A M 4.6 quake struck northwest of India’s capital, New Delhi today. The region experienced a widely felt M 3.8 in April. Today’s shock occurred beneath the Delhi-Hardwar ridge, …
M 5.6 quake and 5.0 aftershock strike New Zealand
Two large earthquakes struck offshore New Zealand over the weekend. The region hosts a number of large faults capable of generating major quakes. The South Island is transected by the …
M6.5 Tonopah event ruptured two faults
The M 6.5 Tonopah event appears to include a main left-lateral rupture on an E-W fault, and a secondary right-lateral rupture on a N-S Fault. This type of sequence, termed …
M5.0 quake in the Philippines
A M5.0 quake struck just off the eastern coast of Luzon in the Philippines at a depth of approx 48 km according to the USGS. The region lies wedged between …
M 4.8 quake rattles Santiago
A widely-felt magnitude-4.8 earthquake ruptured at the southern edge of Santiago today. The event likely struck on the megathrust that lies 90 km beneath Santiago. …
Tonopah quake likely occurred on left-lateral fault
It is beginning to appear that a 20-25 km long left-lateral strike-slip fault, perhaps fully unmapped before the earthquake, is responsible for the 15 May rupture. There is just one …
Strong Nevada earthquake felt in San Francisco Bay Area, Bakersfield and Las Vegas
A magnitude-6.5 quake struck a remote part of Nevada today, but was felt in the San Francisco Bay area, Bakersfield, and Las Vegas. Based on its aftershocks and focal mechanism, the event probably struck on an unnamed left-lateral fault, or perhaps the Emigrant Peak Fault.
Earthquake swarm underway beneath Greater Tokyo
Yesterday’s M5.8 is the latest in a series of M5+ quakes to rattle greater #Tokyo since the beginning of the year. The long-term rate of M5+ quakes within 100 km …
M 5.3 quake in Philippines
Three widely felt earthquakes shook the Philippines today, but it’s unclear if they triggered each other. They appear to have struck on the twin subduction zones that formed the islands. …
M 5.6 quake in Japan
Another quake struck beneath the Tokyo metro region just after 10 pm local time on May 4th. This quake, a M 5.6, is the latest in a swarm that has …
M 3.3 in Los Angeles Metro
A M 3.3 quake rattled parts of the northern Los Angeles metro area last night. The region is at risk of strong shaking, according to Temblor’s models. Los Angeles has …
M 5.3 offshore Puerto Rico
A series of M 4+ aftershocks struck this morning off shore of Puerto Rico, south of Ponce, with the largest being a M 5.3. These quakes follow the M 6.4 …
M 6.6 earthquake offshore Crete
Today’s magnitude-6.6 was far enough offshore to cause no damage. But this thrust event likely struck on or just above the Hellenic Arc megathrust zone, which ruptured in AD 365 …
M 5.0 quake in Indonesia
A M 5.0 earthquake occurred today near the town of Padangsidempuan, Indonesia. Sumatra is transected by the right-lateral Sumatran fault system. Today’s quake occurred within a tectonically complex region …