National Seismic Monitoring Hubs
Real-time activity tracking, national networks, baseline hazard levels, and tectonic summaries for seismically active nations.
Top 100 Landmark Earthquakes of All Time
Explore the definitive historical archive of the 100 strongest and deadliest megathrust ruptures since 1700.
Japan
Four tectonic plates meet beneath the Japanese archipelago: the Pacific plate dives into the Japan and Kuril trenches along the eastern seaboard, while the Philippine Sea plate underthrusts the Nankai Trough to the south. That geometry produced the Mw 9.1 Tohoku megathrust of 2011 and keeps a Nankai rupture among the most closely monitored hazards on Earth.
Turkey
The Anatolian plate is squeezed westward between the converging Eurasian and Arabian plates, discharging that strain along two of the world's longest strike-slip faults: the North Anatolian Fault, which has ruptured progressively westward toward Istanbul since 1939, and the East Anatolian Fault, which produced the Mw 7.8 Kahramanmaraş earthquake in February 2023.
Indonesia
The Indo-Australian plate subducts beneath the Sunda block along a 5,000 km arc running the length of Sumatra and Java, then curves into the Banda Sea collision east of Flores. The 2004 Mw 9.1 Sumatra-Andaman rupture and the tsunami that followed remain the deadliest earthquake event of the modern instrumental era.
Mexico
The Cocos plate subducts beneath North America along the Middle America Trench, loading the Guerrero seismic gap and the Chiapas segment. Mexico City sits 300 km inland yet suffers disproportionate damage: the soft lakebed clay it is built on amplifies long-period shaking by up to fifty times, as the 1985 and 2017 disasters showed.
Philippines
The archipelago is caught between two opposing subduction zones — the Manila Trench swallowing the South China Sea from the west, the Philippine Trench consuming the Philippine Sea from the east — with the 1,200 km Philippine Fault taking up the leftover motion straight through the islands. Few countries have so much plate boundary packed into so little land.
Chile
The Nazca plate drives eastward beneath South America at about 7 cm a year, one of the fastest convergence rates on the planet and the reason Chile hosts the largest earthquake ever instrumentally recorded, the Mw 9.5 Valdivia event of 1960. The same interface produced the Mw 8.8 Maule earthquake in 2010.
Greece
Greece is the most seismically active country in Europe. The African plate subducts beneath the Aegean along the Hellenic Arc south of Crete, while the Aegean block itself stretches and thins, opening normal faults through the Gulf of Corinth and Attica at some of the fastest extension rates measured anywhere on continental crust.
Nepal
The entire country sits on the Main Himalayan Thrust, the fault on which India is driven beneath Tibet at about 2 cm a year and which built the Himalaya. The Mw 7.8 Gorkha earthquake of 2015 released only part of the accumulated strain, leaving the segment west of Kathmandu still locked and loaded.
Peru
Peru sits on the Pacific Ring of Fire where the oceanic Nazca plate subducts east-northeast beneath the South American plate along the Peru-Chile Trench at roughly 6 to 7 cm a year. This megathrust interface drives immense subduction earthquakes and tsunamis—such as the 1970 Mw 7.9 Ancash catastrophe that triggered the deadly Huascarán avalanche, the 2001 Mw 8.4 Arequipa earthquake, and the historic 1746 megathrust that destroyed Lima and Callao.
United States
American seismicity comes from four unrelated settings: the San Andreas transform slicing through California, the locked Cascadia subduction zone off the Pacific Northwest, the Aleutian arc that makes Alaska the most earthquake-prone state, and the Hawaiian hotspot where magma movement and flank collapse drive the shaking.
Italy
The Apennine range is pulling apart along its crest, producing shallow normal-faulting earthquakes that sit directly beneath historic stone towns — the mechanism behind L'Aquila in 2009 and Amatrice in 2016. To the south, the Calabrian arc subducts the Ionian seafloor and feeds the volcanic systems of Etna, Vesuvius and Campi Flegrei.
New Zealand
The Pacific plate subducts beneath the North Island at the Hikurangi margin, then the boundary changes character down the South Island into the Alpine Fault, a 600 km strike-slip structure that has ruptured roughly every 300 years and last did so in 1717. Christchurch in 2010-2011 showed how much damage previously unmapped faults can do.
Russia
Russian seismicity concentrates in three widely separated belts: the Kuril-Kamchatka trench, where the Pacific plate subducts at nearly 8 cm a year and generates the country's largest earthquakes and tsunamis; the Baikal rift, a continental spreading zone pulling Siberia apart; and the Caucasus, where the Arabian collision drives thrust faulting.
Colombia
Three tectonic elements converge on Colombia: the Nazca plate subducting along the Pacific coast, the Caribbean plate pressing from the north, and the Panama block colliding into the northwest. The Chocó margin off Buenaventura is the most active segment, capable of Mw 8 ruptures as in 1906 and 1979.
India
India's seismic hazard comes from the northward drive of the Indian plate into Eurasia at about 4–5 cm a year. The Himalayan front from Kashmir to Arunachal Pradesh, the Shillong Plateau in the Northeast and the Andaman–Nicobar subduction arc carry the largest earthquakes, but the stable interior is not immune: the 2001 Bhuj and 1993 Latur earthquakes struck far from any plate boundary.
Afghanistan
The Hindu Kush hosts a nest of intermediate-depth earthquakes 180 to 250 km down, inside a slab of sinking lithosphere left over from the India-Eurasia collision. Their depth spreads the shaking across Central and South Asia, while shallow faulting near Herat causes the heavier local destruction in villages built of unreinforced mud brick.
Armenia
Armenia lies within the active collision zone where the northward drive of the Arabian plate crushes into the Eurasian plate across the Lesser Caucasus and Armenian Highland. Deformation is partitioned into right-lateral strike-slip and reverse faulting along major structures such as the Pambak-Sevan-Sunik and Garni fault systems, producing devastating shallow earthquakes like the 1988 Mw 6.8 Spitak catastrophe and the historic 1679 Garni event that destroyed Yerevan.
Georgia
Georgia occupies the compressed corridor between the Greater and Lesser Caucasus mountains, accommodating the continental collision of the Arabian and Eurasian plates. Active deformation is dominated by fold-and-thrust belts along the Greater Caucasus frontal thrust and Trialeti system, generating powerful shallow thrust events such as the 1991 Mw 7.0 Racha earthquake—the strongest recorded in the country—as well as shallow intraplate events beneath vulnerable urban centers like the 2002 Tbilisi earthquake.
Iceland
Iceland straddles the divergent Mid-Atlantic Ridge, where the North American and Eurasian plates pull apart at roughly 2 cm per year, directly over a deep mantle plume (the Iceland hotspot). This unique tectonic intersection drives continuous volcanic rifting, extensive fissure swarms on the Reykjanes Peninsula and Northern Volcanic Zone, and energetic transform earthquakes along the South Iceland Seismic Zone and Tjörnes Fracture Zone.
Kazakhstan
Seismic hazard in Kazakhstan concentrates in the far southeast, where the northern Tien Shan absorbs shortening transmitted two thousand kilometres north from the India-Eurasia collision. Almaty, the country's largest city, was destroyed twice within forty years, by the Verny earthquake of 1887 and the Mw 8.0 Chon-Kemin event of 1911.
Uzbekistan
The Fergana Valley and the Tashkent basin sit on thrust faults that take up the northward push of the Pamir. Magnitude is not the whole story here: the 1966 Tashkent earthquake reached only M 5.2, but it was shallow and directly beneath the city, and it levelled the historic centre and left hundreds of thousands homeless.
Venezuela
The Caribbean plate slides eastward past South America along the San Sebastián and El Pilar strike-slip faults, which run just offshore of Venezuela's densely populated northern coast. The 1967 Caracas earthquake reached only M 6.6 but collapsed high-rises on soft sediment in Altamira and Los Palos Grandes.
Malaysia
Peninsular Malaysia is far from any plate boundary and mostly feels distant Sumatran earthquakes rather than its own. Sabah is the exception: active normal faults around Mount Kinabalu produced the Mw 6.0 Ranau earthquake of 2015, which triggered deadly rockfalls on the mountain and surprised a region long assumed to be quiet.