Earthquakes in Sant'Anna Arresi
Northern Algeria [Land: Algeria]
Seismic activity in the surroundings
100 km radiusNo events within 30 km of the town. The closest on record: magnitude 2.0, 59 km away.
INGV catalogue epicentres of the last ~12 years, within the given radius from the town centre.
How seismic is this area?
The quietest class: the probability of strong earthquakes is very low.
Official Civil Protection classification (upd. 2025), used for building codes.
The national hazard map provides no value for this area: that happens in the quietest parts of Italy.
Hazard describes the long-term expected shaking: it is not a forecast.
Why the ground rarely shakes here
Sant'Anna Arresi sits in one of the most stable areas of Italy: far from the boundary between the Eurasian and African plates, on ancient, rigid crust that hardly accumulates tectonic stress any more.
That is why earthquakes here are rare and almost always weak: a small geological privilege.
The “area” is Sant'Anna Arresi plus nearby towns.
The great earthquakes in this area's history
Almost a thousand years of catalogues: the strongest documented events within ~50 km.
Source: Parametric Catalogue of Italian Earthquakes CPTI15 (INGV, CC BY 4.0).
The closest seismic structure
The town lies about 108 km from Northern Africa offshore - East, one of the seismic structures mapped by INGV geologists.
Faults are mapped to build better and understand the territory: knowing them says nothing about when an earthquake will occur, which remains unpredictable. Source: DISS 3.3 (INGV, CC BY 4.0).
Area over time
Earthquake map
7 eventsEarthquakes in the area
Nearby towns
How does it compare with the surroundings?
Sant'Anna Arresi is among the quietest towns of its province: very few epicentres are recorded here.
Each quake is attributed to the town closest to its epicentre: the numbers describe the area, not the municipal territory alone.
Context
Province of Sud Sardegna0 events · 30gSardinia region0 events · 30gFrequently asked questions
Were there earthquakes today in Sant'Anna Arresi?
No, no quakes were recorded today in the Sant'Anna Arresi area: the latest nearby dates back to 66 months ago.
Is Sant'Anna Arresi a seismic area?
Sant'Anna Arresi is classified in seismic zone 4 by the Civil Protection. The quietest class: the probability of strong earthquakes is very low.
What was the strongest earthquake near Sant'Anna Arresi?
In the last ~12 years of INGV data, the strongest within 100 km of Sant'Anna Arresi was magnitude 2.0, in 2019.
When was the last quake near Sant'Anna Arresi?
The last quake recorded within 100 km of Sant'Anna Arresi was 27 months ago.
Tip. Click a nearby town to explore its seismicity.
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)