Sweden
Sweden is located in Europe and has a Low seismic risk classification. A total of 0 earthquakes have been recorded in the country's seismic history. With a population of 10,605,098 and a land area of 450,295 km², seismic events can have significant implications for infrastructure and public safety.
Seismic Overview
Sweden occupies the Fennoscandian shield, ancient Precambrian crust with essentially no active tectonics. Natural seismicity is very low: the strongest instrumentally recorded events within Sweden have reached approximately [[magnitude]] 4.5 offshore in the Gulf of Bothnia and in the Skagerrak, but onshore events rarely exceed M 3. Felt earthquakes occur sporadically — perhaps a few per year across the entire country — and there is no record of earthquake-caused casualties or significant structural damage in Swedish history.
The primary driver of Sweden's minor seismicity is postglacial rebound: the Fennoscandian land mass is still rising at up to 10 mm/year in northern Sweden as it adjusts isostatically to the removal of the Weichselian ice sheet (completed ~10,000 years ago), and this uplift occasionally generates small [[seismic-wave|seismic]] events on ancient basement faults. Paleoseismic investigations have identified large postglacial fault scarps in northern Sweden (including the Pärvie Fault and Merasjärvi Fault) that ruptured in M 7–8 events immediately after deglaciation. These events cannot be expected to recur at such size under current loading conditions. Sweden applies minimal seismic design requirements, and the country's earthquake risk is negligible for ordinary engineering purposes.
Recent Earthquakes
| Mag | Location | Time | |
|---|---|---|---|
| No recent earthquakes. | |||
Earthquakes Near Major Cities in Sweden
Frequently Asked Questions
Sweden has a low level of seismic activity. Large earthquakes are infrequent but not impossible. A total of 0 earthquakes have been recorded in Sweden's seismic history.
Sweden has had 0 recorded earthquakes. This count includes events of all magnitudes detected by seismic monitoring networks. The actual number of earthquakes may be higher, as smaller events can go undetected.
Sweden is classified in the "Low" seismic zone, located in Europe. Seismic zones indicate the relative level of earthquake hazard based on historical activity, geological conditions, and proximity to tectonic plate boundaries.
During an earthquake, Drop, Cover, and Hold On. Get under a sturdy desk or table, protect your head and neck, and hold on until shaking stops. Move away from windows and heavy objects. After the earthquake, check for injuries and be prepared for aftershocks.
Country earthquake risk is assessed using several factors: proximity to tectonic plate boundaries, historical seismicity (frequency and magnitude of past events), geological conditions, population density in seismic zones, and building code enforcement. QuakeFYI assigns seismic zones from 0 (no risk) to 4 (very high) based on these factors.
A seismic zone is a geographic area classified by the level of earthquake hazard. Zone 0 has negligible risk, Zone 1 has low risk, Zone 2 has moderate risk, Zone 3 has high risk, and Zone 4 has very high risk. These zones are determined by historical earthquake data, tectonic setting, and geological conditions.
Countries along the Pacific Ring of Fire experience the most earthquakes. Japan, Indonesia, Chile, the Philippines, and Iran consistently record the highest seismic activity. The United States (especially Alaska and California), Turkey, and Mexico are also among the most seismically active nations.
Population density amplifies earthquake risk because more people and infrastructure are exposed to potential damage. A magnitude 7.0 earthquake in a densely populated city can cause thousands of casualties, while the same event in an uninhabited area may cause none. Building codes and emergency preparedness greatly reduce risk in populated areas.
Seismic density measures the concentration of earthquake activity relative to a country's land area, expressed as earthquakes per 1,000 square kilometers. A high seismic density indicates frequent earthquake activity per unit area, helping compare seismic risk between countries of different sizes.